PI3583-00-QFYZ [VICOR]
30 â 60VIN Cool-Power ZVS Buck Regulator;
| 型号： | PI3583-00-QFYZ |
| 厂家： | 
VICOR CORPORATION |
| 描述： | 30 â 60VIN Cool-Power ZVS Buck Regulator |
| 文件： | 总45页 (文件大小：1359K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Cool-Power®
ZVS Switching Regulators
PI358x-00
30 – 60VIN Cool-Power ZVS Buck Regulator
Product Description
Features & Benefits
The PI358x-00 is a family of high input voltage, wide-input-range
DC-DC ZVS Buck regulators integrating controller and
power switches within a high-density GQFN (UTAC's
Grid-array QFN) package.
• High-Efficiency HV ZVS Buck Topology
• Wide input voltage range of 30 – 60V
• Power up into pre-biased load < 6V
• Parallel capable with single-wire current sharing
• Input Over/Undervoltage Lockout (OVLO/UVLO)
• Output Overvoltage Protection (OVP)
• Overtemperature Protection (OTP)
The integration of a high-performance Zero-Voltage Switching
(ZVS) topology, within the PI358x-00 series, increases point-of-load
performance providing best-in-class power efficiency.
Output Voltage
Device
IOUT Max
Set
3.3V
5.0V
12.0V
Range
• Fast and slow current limits
2.2 – 4.0V
3.8 – 6.5V
6.5 – 14V
10A
10A
9A
PI3583-00-QFYZ
PI3585-00-QFYZ
PI3586-00-QFYZ
• Differential amplifier for output remote sensing
• User adjustable soft start & tracking
• –20 to 120°C operating range (TINT
)
Applications
• HV to PoL Buck Regulator Applications
• Computing, Communications, Industrial,
Automotive Equipment
Package Information
• 37-Pin GQFN
Cool-Power® ZVS Switching Regulators
Page 1 of 45
Rev 1.0
10/2018
PI358x-00
Contents
Order Information
3
3
Application Description
Output Voltage Set Point
Soft Start Adjust and Tracking
Inductor Pairing
37
37
37
37
38
38
39
39
40
42
43
44
45
Thermal, Storage and Handling Information
Absolute Maximum Ratings
Functional Block Diagram
3
4
Pin Description
5
Parallel Operation
Package Pinout
6
Filter Considerations
VDR Bias Regulator
PI358x-00 Common Electrical Characteristics
PI3583-00 (3.3VOUT) Electrical Characteristics
PI3585-00 (5.0VOUT) Electrical Characteristics
PI3586-00 (12.0VOUT) Electrical Characteristics
Functional Description
7
9
Additional System Design Considerations
Layout Guidelines
16
23
30
30
32
32
32
32
32
32
32
32
32
32
36
Recommended PCB Footprint
Package Drawings
Remote Sensing
Revision History
Soft Start
Warranty
Output Voltage Selection
Output Current Limit Protection
Input Undervoltage Lockout
Input Overvoltage Lockout
Output Overvoltage Protection
Overtemperature Protection
Pulse Skip Mode (PSM)
Variable Frequency Operation
Thermal Characteristics
SiP Power Dissipation as Percentage of Total System Losses
Cool-Power® ZVS Switching Regulators
Page 2 of 45
Rev 1.0
10/2018
PI358x-00
Order Information
Product
Rated IOUT
10A
Package
Transport Media
Nominal Output
PI3583-00-QFYZ
PI3585-00-QFYZ
PI3586-00-QFYZ
3.3V
5.0V
7 x 8mm GQFN
7 x 8mm GQFN
7 x 8mm GQFN
TRAY
TRAY
TRAY
10A
12.0V
9A
Thermal, Storage and Handling Information
Name
Rating
Storage Temperature
–65 to 150°C
–20 to 120°C
260°C
Internal Operating Temperature
Soldering Temperature for 30 seconds
MSL Rating
MSL3
ESD Rating, JESD22-A114F, JS-002-2014
500V HBM; 200V CDM, respectively
Absolute Maximum Ratings[a]
Name
VIN
Rating
–0.7 to 75V
VS1
VOUT
CR
–6[b] to 75V
–0.5 to 25V
–0.7 to 25V
CB
–0.3 to 5.5V with respect to CR
–0.3 to 5.5V with respect to VS1
–0.7 to 75V
Q1B
VBS
Q2G
SGND
TRK
–0.5 to 5.5V
100mA
–0.3 to 5.5V, 30mA
VDR, VCC, SYNCI, SYNCO, PWRGD, EN,
CC, CSL, COMP, EAO, EAIN, VDIFF, VSN, VSP, TESTx
–0.3 to 5.5V, 5mA
[a] Stresses beyond these limits may cause permanent damage to the device. Operation at these conditions or conditions beyond those listed in the
Electrical Specifications table is not guaranteed. All voltages are referenced to PGND unless otherwise noted.
[b] Peak during switching transient.
Cool-Power® ZVS Switching Regulators
Page 3 of 45
Rev 1.0
10/2018
PI358x-00
Functional Block Diagram
Q1B
VS1
Q2G
CSL
CR
CB
VIN
VBS
VS1
Q1
Q2
VOUT
ZVS Control
Power
Control
VDR
VCC
VSN
VSP
-
+
ZVS Buck Control
and
SYNCO
SYNCI
PWRGD
EN
VDIFF
-
+
EAIN
VREF
Digital Parametric Trim
EAO
RZI
COMP
TRK
PGND
Simplified block diagram
Cool-Power® ZVS Switching Regulators
Page 4 of 45
Rev 1.0
10/2018
PI358x-00
Pin Description
Name
PGND
Location
I/O
Description
1, 15, 37
Power
Power Ground: VIN and VOUT power returns
Switching Node: and ZVS sense for power switches. Requires a schottky diode clamp with a low
inductance connection in parallel with an RC snubber for 1nF and 0.3Ω.
Refer to Table 1 for the recommended components.
VS1
VIN
2
Power
3
Power
Power
Input Voltage: for the power stage.
14
Input Voltage: and sense for UVLO, OVLO and feed forward ramp.
ZVS control function node. Requires a 40V schottky diode clamp to PGND.
Refer to Table 1 for the recommended component.
CR
CB
4
5
6
Power
Power
Power
ZVS control function node. Decouple with a 0.047µF capacitor between CB and CR.
Refer to Table 1 for the recommended component.
Q1 driver boost pin. Decouple with a 0.22µF capacitor in series with a 1.3Ω resistor
between Q1B and VS1. Refer to Table 1 for the recommended components.
Q1B
CSL
7
8
Power
Power
ZVS control function node. Connect to PGND.
Q2 gate drive. Leave open.
Q2G
Gate Driver VCC: 5.1V gate driver bias supply. May be used as a bias supply for low power exter-
nal loads. See Application Description for important considerations.
VDR
9
I/O
N/C
VBS
10-12
13
I/O
No Internal connection.
Power
Power
Switching node for gate driver bias supply.
VOUT
16-19
Output Voltage: Internal Clamp connection and sense for power switches and feed-forward ramp.
Synchronization Input: Synchronize to the falling edge of external clock frequency. SYNCI is a
high impedance digital input node and should always be connected to SGND when not in use. The
PI358x-00 family is not optimized for external synchronization functionality.
SYNCI
20
21
I
Synchronization Output: Outputs a high signal at the start of each clock cycle for the longer of
½ of the minimum period or the on time of the high-side power MOSFET.
SYNCO
O
TEST1
TEST2
TEST3
22
23
24
I/O
I/O
I/O
Factory Test: Use only with factory guidance. Connect to SGND for proper operation.
Factory Test: Use only with factory guidance. Connect to SGND for proper operation.
Factory Test: Use only with factory guidance. Leave open.
Signal Ground: Internal logic ground for EAO, EAIN, TRK, SYNCI, SYNCO communication returns.
SGND and PGND are not connected inside the package. SGND should be connected to the large
PGND island (controller paddle, pin 37) directly under the PI358x package. Sensitive analog nodes
should be connected to the SGND side of the connection.
SGND
25
I/O
VCC
EN
26
27
I/O
I/O
Control Circuitry VCC: Analog & digital bias. Decouple with 2.2µF to SGND.
Enable Input: Regulator enable control. Asserted high or left floating – regulator enabled;
Asserted low – regulator output disabled.
Soft Start and Track Input: An external capacitor with minimum capacitance of 47nF is required
to be connected between TRK pin and SGND to control the rate of rise during soft start.
TRK
LGH
28
29
30
I
I/O
O
For factory use only. Connect to SGND in application.
Compensation Capacitor: Connect capacitor for control loop dominant pole.
See Error Amplifier section for details. A default CCOMP of 4.7nF is used in the example.
COMP
EAO
EAIN
VSN
31
32
33
34
35
O
I
Error Amplifier Output: External connection for additional compensation and current sharing.
Error Amplifier Inverting Input: Connection for the feedback divider tap.
Independent Amplifier Inverting Input: If unused connect in unity gain.
Independent Amplifier Non-Inverting Input: If unused connect to SGND.
Independent Amplifier Output: Active only when module is enabled.
I
VSP
I
VDIFF
O
Power Good: High impedance when regulator is operating and VOUT is in regulation.
Otherwise pulls to SGND.
PWRGD
36
O
Cool-Power® ZVS Switching Regulators
Page 5 of 45
Rev 1.0
10/2018
PI358x-00
Package Pinout
PGD VDIFF VSP
VSN EAIN EAO COMP LGH
TRK
28
EN
27
VCC
26
34
33
32
31
30
29
36
35
25
PGND
SGND
1
24
23
22
21
20
19
18
17
16
15
TEST3
TEST2
TEST1
2
SYNCO
SYNCI
VOUT
VOUT
VOUT
VOUT
PGND
VS1
PGND
37
3
14
13
VIN
VBS
VIN
5
6
7
8
9
10
11
12
4
CR
CB
QIB
CSL Q2G VDR N/C N/C N/C
PI358x
TOP THROUGH VIEW OF PRODUCT
GQFN PACKAGE
Cool-Power® ZVS Switching Regulators
Page 6 of 45
Rev 1.0
10/2018
PI358x-00
PI358x-00 Common Electrical Characteristics
Specifications apply for –20°C < TINT < 120°C, VIN = 48V, EN = High, unless otherwise noted.[c]
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Differential Amp
[d]
[d]
Open Loop Gain
96
5
120
7
140
12
1
dB
MHz
mV
V
Small Signal Gain-Bandwidth
Input Offset Error
0.5
Common-Mode Input Range
Differential-Mode Input Range
Input Bias Current
–0.1
2.5
2
V
–1
–1
1
µA
mA
V
Sink/Source Current
Maximum VOUT
1
IVDIFF = –1mA
4.85
Minimum VOUT
IVDIFF = –1mA
20
50
mV
pF
[j]
Capacitive Load Range for Stability
Slew Rate
0
11
V/µs
PWRGD
VOUT Rising Threshold
VPG_HI%
78
75
84
81
90
% VOUT_DC
VOUT Falling Threshold
PWRGD Output Low
VPG_LO%
VPG_SAT
87
% VOUT_DC
V
Sink = 4mA
0.4
[c] All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI358x evaluation board with 3 x 3in
dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value.
[d] Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control.
Output voltage is determined by an external feedback divider ratio.
[e] Output current capability may be limited and other performance may vary from noted electrical characteristics when VOUT is not set to nominal.
[f] Refer to Output Ripple plots.
[g] Refer to Load Current vs. Ambient Temperature curves.
[h] Refer to Switching Frequency vs. Load current curves.
[i] Contact factory applications for array derating and layout best practices to minimize sharing errors.
[j] Informational only.
Cool-Power® ZVS Switching Regulators
Page 7 of 45
Rev 1.0
10/2018
PI358x-00
PI358x-00 Common Electrical Characteristics (Cont.)
Specifications apply for –20°C < TINT < 120°C, VIN = 48V, EN = High, unless otherwise noted.[c]
Parameter
Symbol
Conditions
VDR
Min
Typ
Max
Unit
Voltage Set Point
External Loading
VVDR
IVDR
VIN_DC > 10V
4.9
0
5.05
5.2
2
V
See Application Description for details
mA
External required components for VDR,
recommended to be an Inductor.
Refer to Table 1 for the recommended component.
External Inductor
Between VDR and VBS
LVBS
10
µH
µF
External required components for VDR,
recommended to be a capacitor.
Refer to Table 1 for the recommended component.
External Capacitor
Between VDR and PGND
CVDR
2.2
Enable
High Threshold
Low Threshold
VEN_HI
VEN_LO
VEN_HYS
0.9
0.7
100
1.0
0.8
200
1.1
0.9
300
V
V
Threshold Hysteresis
mV
Pull-Up Voltage Level for
Source Current
VEN_PU
2
V
Pull-Up Current
IEN_PU_POS
50
µA
Reliability
MIL-HDBK-217, 25ºC, Ground Benign: GB
Telcordia SR-332, 25ºC, Ground Benign: GB
22.7
191
MHrs
MHrs
MTBF
[c] All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI358x evaluation board with 3 x 3in
dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value.
[d] Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control.
Output voltage is determined by an external feedback divider ratio.
[e] Output current capability may be limited and other performance may vary from noted electrical characteristics when VOUT is not set to nominal.
[f] Refer to Output Ripple plots.
[g] Refer to Load Current vs. Ambient Temperature curves.
[h] Refer to Switching Frequency vs. Load current curves.
[i] Contact factory applications for array derating and layout best practices to minimize sharing errors.
[j] Informational only.
Cool-Power® ZVS Switching Regulators
Page 8 of 45
Rev 1.0
10/2018
PI358x-00
PI3583-00 (3.3VOUT) Electrical Characteristics
Specifications apply for –20°C < TINT < 120°C, VIN = 48V, EN = High, unless otherwise noted.[c]
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Input Specifications
Input Voltage
Input Current
VIN_DC
IIN_DC
30
48
60
V
A
VIN = 48V, TCASE = 25°C, full load
Short at terminals
0.77
Input Current at Output Short
(Fault Condition Duty Cycle)
IIN_Short
3
mA
Input Quiescent Current
Input Quiescent Current
Input Voltage Slew Rate
IQ_VIN
IQ_VIN
VIN_SR
Disabled
0.65
1.8
mA
mA
Enabled, no load, TCASE = 25°C
[j]
1
V/µs
Output Specifications
[d]
EAIN Voltage Total Regulation
Output Voltage Trim Range
Line Regulation
VEAIN
0.975
2.2
0.990
3.3
1.005
4.0
V
[d] [e]
VOUT_DC
V
ΔVOUT / ΔVIN @ 25°C, 30V < VIN < 60V
ΔVOUT / ΔIOUT @ 25°C, 10% to 100% load
0.10
0.10
53
%
Load Regulation
%
Output Voltage Ripple
Output Current
VOUT_AC
IOUT_DC
Full load, COUT = 6 x 100µF, 20MHz BW [f]
mVP-P
[g]
0
10
A
Current Limit
IOUT_CL
Typical current limit based on nominal 420nH inductor.
11.5
A
[d]
Maximum Array Size
Output Current, Array of 2
Output Current, Array of 3
NPARALLEL
3
Modules
IOUT_DC_ARRAY2 Total array capability, [d] see applications section for details
IOUT_DC_ARRAY3 Total array capability, [d] see applications section for details
0
0
A
A
[i]
[i]
Protection
Input UVLO Start Threshold
Input UVLO Stop Hysteresis
Input UVLO Response Time
Input OVLO Stop Threshold
Input OVLO Start Hysteresis
Input OVLO Start Threshold
Input OVLO Response Time
VUVLO_START
VUVLO_HYS
27.0
2.08
1.25
64.3
1.17
29.1
2.50
V
V
1.66
µs
V
[d]
VOVLO_STOP
[d]
VOVLO_HYS
VOVLO_START
tf
Hysteresis active when OVLO present for at least tFR_DLY
V
[d]
60.5
4.8
V
1.25
20
µs
Output Overvoltage Protection,
Relative
VOVP_REL
Above set VOUT
%
Output Overvoltage Protection,
Absolute
VOVP_ABS
5.3
V
[c] All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI358x evaluation board with 3 x 3in
dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value.
[d] Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control.
Output voltage is determined by an external feedback divider ratio.
[e] Output current capability may be limited and other performance may vary from noted electrical characteristics when VOUT is not set to nominal.
[f] Refer to Output Ripple plots.
[g] Refer to Load Current vs. Ambient Temperature curves.
[h] Refer to Switching Frequency vs. Load current curves.
[i] Contact factory applications for array derating and layout best practices to minimize sharing errors.
[j] Informational only.
Cool-Power® ZVS Switching Regulators
Page 9 of 45
Rev 1.0
10/2018
PI358x-00
PI3583-00 (3.3VOUT) Electrical Characteristics (Cont.)
Specifications apply for –20°C < TINT < 120°C, VIN = 48V, EN = High, unless otherwise noted.[c]
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Timing
Switching Frequency
Fault Restart Delay
fs
[h] While in DCM operating mode only, SYNCI grounded
470
500
30
530
kHz
ms
tFR_DLY
Synchronization Input (SYNCI)
–50% and +10% relative to set switching frequency (fS),
while in DCM operating mode only. [e] and [h]
Synchronization Frequency Range
SYNCI Threshold
fSYNCI
250
4.5
550
kHz
V
VSYNCI
2.5
Synchronization Output (SYNCO)
SYNCO High
VSYNCO_HI
VSYNCO_LO
tSYNCO_RT
tSYNCO_FT
Source 1mA
Sink 1mA
20pF load
20pF load
V
V
SYNCO Low
0.5
1.4
SYNCO Rise Time
SYNCO Fall Time
10
10
ns
ns
Soft Start, Tracking and Error Amplifier
TRK Active Range (Nominal)
TRK Enable Threshold
VTRK
VTRK_OV
VEAIN_OV
ITRK
0
V
40
80
50
8.7
mV
mV
µA
mA
nF
TRK to EAIN Offset
40
30
120
70
Charge Current (Soft Start)
Discharge Current (Fault)
TRK Capacitance, External
Soft Start Time
ITRK_DIS
CTRK_EXT
tSS
VTRK = 0.5V
47
CTRK = 47nF
0.94
7.6
ms
mS
V
[d]
Error Amplifier Transconductance
PSM Skip Threshold
GMEAO
PSMSKIP
ROUT
[d]
[d]
[d]
0.8
Error Amplifier Output Impedance
Internal Compensation Resistor
1
MΩ
kΩ
RZI
6
[c] All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI358x evaluation board with 3 x 3in
dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value.
[d] Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control.
Output voltage is determined by an external feedback divider ratio.
[e] Output current capability may be limited and other performance may vary from noted electrical characteristics when VOUT is not set to nominal.
[f] Refer to Output Ripple plots.
[g] Refer to Load Current vs. Ambient Temperature curves.
[h] Refer to Switching Frequency vs. Load current curves.
[i] Contact factory applications for array derating and layout best practices to minimize sharing errors.
[j] Informational only.
Cool-Power® ZVS Switching Regulators
Page 10 of 45
Rev 1.0
10/2018
PI358x-00
PI3583-00 (3.3VOUT) Electrical Characteristics (Cont.)
4
3
2
1
0
94
92
90
88
86
84
82
80
78
2
3
4
5
6
7
8
9
10
2
3
4
5
6
7
8
9
9
9
10
10
10
Load Current (A)
30V 48V
Load Current (A)
30V 48V
VIN:
60V
VIN:
60V
Figure 1 — System efficiency, nominal trim,
Figure 4 — System power dissipation, nominal trim,
board temperature = 25ºC
board temperature = 25ºC
92
91
90
89
88
87
86
85
84
83
82
81
4
3
2
1
0
2
3
4
5
6
7
8
2
3
4
5
6
7
8
9
10
Load Current (A)
30V 48V
Load Current (A)
30V 48V
VIN:
60V
VIN:
60V
Figure 2 — System efficiency, low trim,
Figure 5 — System power dissipation, low trim,
board temperature = 25ºC
board temperature = 25ºC
5
4
3
2
1
94
92
90
88
86
84
82
80
2
3
4
5
6
7
8
9
10
2
3
4
5
6
7
8
Load Current (A)
30V 48V
Load Current (A)
30V 48V
VIN:
60V
VIN:
60V
Figure 3 — System efficiency, high trim,
Figure 6 — System power dissipation, high trim,
board temperature = 25ºC
board temperature = 25ºC
Cool-Power® ZVS Switching Regulators
Page 11 of 45
Rev 1.0
10/2018
PI358x-00
PI3583-00 (3.3VOUT) Electrical Characteristics (Cont.)
5
4
3
2
1
0
94
92
90
88
86
84
82
80
78
2
3
4
5
6
7
8
9
9
9
10
10
10
2
3
4
5
6
7
8
9
9
9
10
10
10
Load Current (A)
30V 48V
Load Current (A)
30V 48V
VIN:
60V
VIN:
60V
Figure 7 — System efficiency, nominal trim,
Figure 10 — System power dissipation, nominal trim,
board temperature = 90ºC
board temperature = 90ºC
5
4
3
2
1
0
94
92
90
88
86
84
82
80
78
2
3
4
5
6
7
8
2
3
4
5
6
7
8
Load Current (A)
30V 48V
Load Current (A)
30V 48V
VIN:
60V
VIN:
60V
Figure 8 — System efficiency, low Trim,
Figure 11 — System power dissipation, low trim,
board temperature = 90ºC
board temperature = 90ºC
6
5
4
3
2
1
0
94
92
90
88
86
84
82
80
78
2
3
4
5
6
7
8
2
3
4
5
6
7
8
Load Current (A)
30V 48V
Load Current (A)
30V 48V
VIN:
60V
VIN:
60V
Figure 9 — System efficiency, high trim,
Figure 12 — System power dissipation, high trim,
board temperature = 90ºC
board temperature = 90ºC
Cool-Power® ZVS Switching Regulators
Page 12 of 45
Rev 1.0
10/2018
PI358x-00
PI3583-00 (3.3VOUT) Electrical Characteristics (Cont.)
4
3
2
1
0
94
92
90
88
86
84
82
80
78
2
3
4
5
6
7
8
9
10
2
3
4
5
6
7
8
9
9
9
10
10
10
Load Current (A)
30V 48V
Load Current (A)
30V 48V
VIN:
60V
VIN:
60V
Figure 13 — System efficiency, nominal trim,
Figure 16 — System power dissipation, nominal trim,
board temperature = –20ºC
board temperature = –20ºC
92
90
88
86
84
82
80
3
2
1
0
2
3
4
5
6
7
8
2
3
4
5
6
7
8
9
10
Load Current (A)
30V 48V
Load Current (A)
30V 48V
VIN:
60V
VIN:
60V
Figure 14 — System efficiency, low trim,
Figure 17 — System power dissipation, low trim,
board temperature = –20ºC
board temperature = –20ºC
4
3
2
1
0
94
92
90
88
86
84
82
80
2
3
4
5
6
7
8
9
10
2
3
4
5
6
7
8
Load Current (A)
30V 48V
Load Current (A)
30V 48V
VIN:
60V
VIN:
60V
Figure 15 — System efficiency, high trim,
Figure 18 — System power dissipation, high trim,
board temperature = –20ºC
board temperature = –20ºC
Cool-Power® ZVS Switching Regulators
Page 13 of 45
Rev 1.0
10/2018
PI358x-00
PI3583-00 (3.3VOUT) Electrical Characteristics (Cont.)
Figure 19 — Transient response: 50% to 100% load, at 1A/µs;
nominal line, nominal trim,
Figure 22 — Output short circuit, nominal line
COUT = 6 x 100µF ceramic
Figure 20 — Output voltage ripple: nominal line, nominal trim,
Figure 23 — Output voltage ripple: nominal line, nominal trim,
100% load, COUT = 6 x 100µF ceramic, 20MHz BW
50% load, COUT = 6 x 100µF ceramic, 20MHz BW
500
480
460
440
420
400
380
360
340
320
300
12
10
8
Note:
SiP is based on VIN and VS1 paths
only. Inductor is based on base with
6
inclusion of GEL 30 interface
resistance (0.15mm thick; 3.5W/m-K
thermal conductivity), and all leads.
4
2
0
0
1
2
3
4
5
6
7
8
9
10
0
20
40
60
80
100
120
140
Load Current (A)
30V 48V
Temperature of Isothermal SiP VIN and VS1 pins,
and PCB at Inductor (ºC)
VIN:
60V
Figure 21 — Switching frequency vs. load, nominal trim
Figure 24 — System thermal specified operating area: max IOUT
at nominal trim vs. temperature at locations noted
Cool-Power® ZVS Switching Regulators
Page 14 of 45
Rev 1.0
10/2018
PI358x-00
PI3583-00 (3.3VOUT) Electrical Characteristics (Cont.)
10
9
8
7
6
5
4
3
2
1
0.8
1.3
1.8
2.3
60V
2.8
EAO Voltage (V)
VIN:
30V
48V
Figure 25 — Output current vs. VEAO, nominal trim
8
7
6
5
4
3
2
1
0
0.8
1.3
1.8
2.3
60V
2.8
EAO Voltage (V)
VIN:
30V
48V
Figure 26 — Small-signal modulator gain vs. VEAO, nominal trim
45
40
35
30
25
20
15
10
5
0
0.8
1.3
1.8
2.3
60V
2.8
EAO Voltage (V)
VIN:
30V
48V
Figure 27 — rEQ_OUT vs VEAO, nominal trim
Cool-Power® ZVS Switching Regulators
Page 15 of 45
Rev 1.0
10/2018
PI358x-00
PI3585-00 (5.0VOUT) Electrical Characteristics
Specifications apply for –20°C < TINT < 120°C, VIN = 48V, EN = High, unless otherwise noted.[c]
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Input Specifications
Input Voltage
Input Current
VIN_DC
IIN_DC
30
48
60
V
A
VIN = 48V, TCASE = 25°C, full load
Short at terminals
1.12
Input Current at Output Short
(Fault Condition Duty Cycle)
IIN_Short
1.8
mA
Input Quiescent Current
Input Quiescent Current
Input Voltage Slew Rate
IQ_VIN
IQ_VIN
VIN_SR
Disabled
0.65
2
mA
mA
Enabled, no load, TCASE = 25°C
[j]
1
V/µs
Output Specifications
[d]
EAIN Voltage Total Regulation
Output Voltage Trim Range
Line Regulation
VEAIN
0.975
3.8
0.990
5.0
1.005
6.5
V
[d] [e]
VOUT_DC
V
ΔVOUT / ΔVIN @ 25°C, 30V < VIN < 60V
ΔVOUT / ΔIOUT @ 25°C, 10% to 100% load
0.10
0.10
60
%
Load Regulation
%
Output Voltage Ripple
Output Current
VOUT_AC
IOUT_DC
Full load, COUT = 6 x 47µF, 20MHz BW [f]
mVP-P
[g]
0
10
A
Current Limit
IOUT_CL
Typical current limit based on nominal 420nH inductor.
11.5
A
[d]
Maximum Array Size
Output Current, Array of 2
Output Current, Array of 3
NPARALLEL
3
Modules
IOUT_DC_ARRAY2 Total array capability, [d] see applications section for details
IOUT_DC_ARRAY3 Total array capability, [d] see applications section for details
0
0
A
A
[i]
[i]
Protection
Input UVLO Start Threshold
Input UVLO Stop Hysteresis
Input UVLO Response Time
Input OVLO Stop Threshold
Input OVLO Start Hysteresis
Input OVLO Start Threshold
Input OVLO Response Time
VUVLO_START
VUVLO_HYS
27.0
2.08
1.25
64.3
1.17
29.1
2.50
V
V
1.66
µs
V
[d]
VOVLO_STOP
[d]
VOVLO_HYS
VOVLO_START
tf
Hysteresis active when OVLO present for at least tFR_DLY
V
[d]
60.5
6.7
V
1.25
20
µs
Output Overvoltage Protection,
Relative
VOVP_REL
Above set VOUT
%
Output Overvoltage Protection,
Absolute
VOVP_ABS
7.5
V
[c] All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI358x evaluation board with 3 x 3in
dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value.
[d] Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control.
Output voltage is determined by an external feedback divider ratio.
[e] Output current capability may be limited and other performance may vary from noted electrical characteristics when VOUT is not set to nominal.
[f] Refer to Output Ripple plots.
[g] Refer to Load Current vs. Ambient Temperature curves.
[h] Refer to Switching Frequency vs. Load current curves.
[i] Contact factory applications for array derating and layout best practices to minimize sharing errors.
[j] Informational only.
Cool-Power® ZVS Switching Regulators
Page 16 of 45
Rev 1.0
10/2018
PI358x-00
PI3585-00 (5.0VOUT) Electrical Characteristics (Cont.)
Specifications apply for –20°C < TINT < 120°C, VIN = 48V, EN = High, unless otherwise noted.[c]
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Timing
Switching Frequency
Fault Restart Delay
fs
[h] While in DCM operating mode only, SYNCI grounded
564
600
30
636
kHz
ms
tFR_DLY
Synchronization Input (SYNCI)
–50% and +10% relative to set switching frequency (fS),
while in DCM operating mode only. [e] and [h]
Synchronization Frequency Range
SYNCI Threshold
fSYNCI
300
4.5
660
kHz
V
VSYNCI
2.5
Synchronization Output (SYNCO)
SYNCO High
VSYNCO_HI
VSYNCO_LO
tSYNCO_RT
tSYNCO_FT
Source 1mA
Sink 1mA
20pF load
20pF load
V
V
SYNCO Low
0.5
1.4
SYNCO Rise Time
SYNCO Fall Time
10
10
ns
ns
Soft Start, Tracking and Error Amplifier
TRK Active Range (Nominal)
TRK Enable Threshold
VTRK
VTRK_OV
VEAIN_OV
ITRK
0
V
40
80
50
8.7
mV
mV
µA
mA
nF
TRK to EAIN Offset
40
30
120
70
Charge Current (Soft Start)
Discharge Current (Fault)
TRK Capacitance, External
Soft Start Time
ITRK_DIS
CTRK_EXT
tSS
VTRK = 0.5V
47
CTRK = 47nF
0.94
7.6
ms
mS
V
[d]
Error Amplifier Transconductance
PSM Skip Threshold
GMEAO
PSMSKIP
ROUT
[d]
[d]
[d]
0.8
Error Amplifier Output Impedance
Internal Compensation Resistor
1
MΩ
kΩ
RZI
6
[c] All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI358x evaluation board with 3 x 3in
dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value.
[d] Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control.
Output voltage is determined by an external feedback divider ratio.
[e] Output current capability may be limited and other performance may vary from noted electrical characteristics when VOUT is not set to nominal.
[f] Refer to Output Ripple plots.
[g] Refer to Load Current vs. Ambient Temperature curves.
[h] Refer to Switching Frequency vs. Load current curves.
[i] Contact factory applications for array derating and layout best practices to minimize sharing errors.
[j] Informational only.
Cool-Power® ZVS Switching Regulators
Page 17 of 45
Rev 1.0
10/2018
PI358x-00
PI3585-00 (5.0VOUT) Electrical Characteristics (Cont.)
95
94
93
92
91
90
89
88
87
86
85
84
83
5
4
3
2
1
3
4
5
6
7
8
8
8
9
9
9
10
10
10
3
4
5
6
7
8
9
9
9
10
10
10
2
2
Load Current (A)
30V
Load Current (A)
30V
VIN:
48V
VIN:
48V
60V
60V
60V
60V
Figure 28 — System efficiency, nominal trim,
Figure 31 — System power dissipation, nominal trim,
board temperature = 25ºC
board temperature = 25ºC
94
93
92
91
90
89
88
87
86
85
84
83
82
81
4
3
2
1
0
3
4
5
6
7
3
4
5
6
7
8
2
2
Load Current (A)
30V
Load Current (A)
30V
VIN:
48V
VIN:
48V
60V
Figure 29 — System efficiency, low trim,
Figure 32 — System power dissipation, low trim,
board temperature = 25ºC
board temperature = 25ºC
96
95
94
93
92
91
90
89
88
87
5
4
3
2
1
86
85
3
4
5
6
7
3
4
5
6
7
8
2
2
Load Current (A)
30V
Load Current (A)
30V
VIN:
48V
VIN:
48V
60V
Figure 30 — System efficiency, high trim,
Figure 33 — System power dissipation, high trim,
board temperature = 25ºC
board temperature = 25ºC
Cool-Power® ZVS Switching Regulators
Page 18 of 45
Rev 1.0
10/2018
PI358x-00
PI3585-00 (5.0VOUT) Electrical Characteristics (Cont.)
94
93
92
91
90
89
88
87
86
85
84
83
82
81
6
5
4
3
2
1
3
4
5
6
7
8
8
8
9
9
9
10
10
10
3
4
5
6
7
8
9
9
9
10
10
10
2
2
Load Current (A)
30V
Load Current (A)
30V
VIN:
48V
VIN:
48V
60V
60V
60V
60V
Figure 34 — System efficiency, nominal trim,
Figure 37 — System power dissipation, nominal trim,
board temperature = 90ºC
board temperature = 90ºC
93
92
6
5
4
3
2
1
91
90
89
88
87
86
85
84
83
82
81
80
79
78
3
4
5
6
7
3
4
5
6
7
8
2
2
Load Current (A)
30V
Load Current (A)
30V
VIN:
48V
VIN:
48V
60V
Figure 35 — System efficiency, low Trim,
Figure 38 — System power dissipation, low trim,
board temperature = 90ºC
board temperature = 90ºC
7
94
93
92
91
90
89
6
5
4
3
2
1
88
87
86
85
84
3
4
5
6
7
2
3
4
5
6
7
8
2
Load Current (A)
30V
Load Current (A)
30V
VIN:
48V
VIN:
48V
60V
Figure 36 — System efficiency, high trim,
Figure 39 — System power dissipation, high trim,
board temperature = 90ºC
board temperature = 90ºC
Cool-Power® ZVS Switching Regulators
Page 19 of 45
Rev 1.0
10/2018
PI358x-00
PI3585-00 (5.0VOUT) Electrical Characteristics (Cont.)
96
94
92
4.5
4
3.5
3
90
88
86
84
82
80
2.5
2
1.5
1
0.5
0
2
3
4
5
6
7
8
9
9
9
10
10
10
2
3
4
5
6
7
8
9
10
Load Current (A)
30V 48V
Load Current (A)
30V 48V
VIN:
60V
VIN:
60V
Figure 40 — System efficiency, nominal trim,
Figure 43 — System power dissipation, nominal trim,
board temperature = –20ºC
board temperature = –20ºC
96
94
92
4
3.5
3
90
88
86
84
82
80
2.5
2
1.5
1
0.5
0
2
3
4
5
6
7
8
2
3
4
5
6
7
8
9
10
Load Current (A)
30V 48V
Load Current (A)
30V 48V
VIN:
60V
VIN:
60V
Figure 41 — System efficiency, low trim,
Figure 44 — System power dissipation, low trim,
board temperature = –20ºC
board temperature = –20ºC
96
94
92
6
5
4
3
2
1
0
90
88
86
84
82
80
2
3
4
5
6
7
8
2
3
4
5
6
7
8
9
10
Load Current (A)
30V 48V
Load Current (A)
30V 48V
VIN:
60V
VIN:
60V
Figure 42 — System efficiency, high trim,
Figure 45 — System power dissipation, high trim,
board temperature = –20ºC
board temperature = –20ºC
Cool-Power® ZVS Switching Regulators
Page 20 of 45
Rev 1.0
10/2018
PI358x-00
PI3585-00 (5.0VOUT) Electrical Characteristics (Cont.)
Figure 46 — Transient response: 50% to 100% load, at 1A/µs;
nominal line, nominal trim,
Figure 49 — Output short circuit, nominal line
COUT = 6 x 47µF ceramic
Figure 47 — Output voltage ripple: nominal line, nominal trim,
Figure 50 — Output voltage ripple: nominal line, nominal trim,
100% load, COUT = 6 x 47µF ceramic, 20MHz BW
50% load, COUT = 6 x 47µF ceramic, 20MHz BW
600
575
550
12
10
8
525
500
475
450
Note:
SiP is based on VIN and VS1 paths
only. Inductor is based on base with
6
inclusion of GEL 30 interface
resistance (0.15mm thick; 3.5W/m-K
thermal conductivity), and all leads.
4
2
0
425
400
3
4
5
6
7
8
9
10
0
1
2
0
20
40
60
80
100
120
140
Load Current (A)
30V
Temperature of Isothermal SiP VIN and VS1 pins,
and PCB at Inductor (ºC)
VIN:
48V
60V
Figure 48 — Switching frequency vs. load, nominal trim
Figure 51 — System thermal specified operating area: max IOUT
at nominal trim vs. temperature at locations noted
Cool-Power® ZVS Switching Regulators
Page 21 of 45
Rev 1.0
10/2018
PI358x-00
PI3585-00 (5.0VOUT) Electrical Characteristics (Cont.)
10
9
8
7
6
5
4
3
2
1
0.8
1.3
1.8
2.3
2.8
EAO Voltage (V)
VIN:
30V
48V
60V
Figure 52 — Output current vs. VEAO, nominal trim
10
8
6
4
2
1
0.8
1.3
1.8
2.3
2.8
EAO Voltage (V)
48V
VIN:
30V
60V
Figure 53 — Small-signal modulator gain vs. VEAO, nominal trim
35
30
25
20
15
10
5
0
0.8
1
1.2 1.4 1.6
1.8
2
2.2 2.4 2.6 2.8
60V
EAO Voltage (V)
VIN:
30V
48V
Figure 54 — rEQ_OUT vs VEAO, nominal trim
Cool-Power® ZVS Switching Regulators
Page 22 of 45
Rev 1.0
10/2018
PI358x-00
PI3586-00 (12.0VOUT) Electrical Characteristics
Specifications apply for –20°C < TINT < 120°C, VIN = 48V, EN = High, unless otherwise noted.[c]
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Input Specifications
Input Voltage
Input Current
VIN_DC
IIN_DC
30
48
60
V
A
VIN = 48V, TCASE = 25°C, full load
Short at terminals
2.35
Input Current at Output Short
(Fault Condition Duty Cycle)
IIN_Short
3.5
mA
Input Quiescent Current
Input Quiescent Current
Input Voltage Slew Rate
IQ_VIN
IQ_VIN
VIN_SR
Disabled
0.65
3
mA
mA
Enabled, no load, TCASE = 25°C
[j]
1
V/µs
Output Specifications
[d]
EAIN Voltage Total Regulation
Output Voltage Trim Range
Line Regulation
VEAIN
0.975
6.5
0.990
12.0
0.1
1.005
14.0
V
[d] [e]
VOUT_DC
V
ΔVOUT / ΔVIN @ 25°C, 30V < VIN < 60V
ΔVOUT / ΔIOUT @ 25°C, 10% to 100% load
%
Load Regulation
0.1
%
Output Voltage Ripple
Output Current
VOUT_AC
IOUT_DC
Full load, COUT = 6 x 10µF, 20MHz BW [f]
115
mVP-P
[g]
0
9
A
Current Limit
IOUT_CL
Typical current limit based on nominal 900nH inductor
10.5
A
[d]
Maximum Array Size
Output Current, Array of 2
Output Current, Array of 3
NPARALLEL
3
Modules
IOUT_DC_ARRAY2 Total array capability, [d] see applications section for details
IOUT_DC_ARRAY3 Total array capability, [d] see applications section for details
0
0
A
A
[i]
[i]
Protection
Input UVLO Start Threshold
Input UVLO Stop Hysteresis
Input UVLO Response Time
Input OVLO Stop Threshold
Input OVLO Start Hysteresis
Input OVLO Start Threshold
Input OVLO Response Time
VUVLO_START
VUVLO_HYS
27.0
2.08
1.25
64.3
1.17
29.1
2.50
V
V
1.66
µs
V
[d]
VOVLO_STOP
[d]
VOVLO_HYS
VOVLO_START
tf
Hysteresis active when OVLO present for at least tFR_DLY
V
[d]
60.5
14.7
V
1.25
20
µs
Output Overvoltage Protection,
Relative
VOVP_REL
Above set VOUT
%
Output Overvoltage Protection,
Absolute
VOVP_ABS
15.8
V
[c] All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI358x evaluation board with 3 x 3in
dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value.
[d] Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control.
Output voltage is determined by an external feedback divider ratio.
[e] Output current capability may be limited and other performance may vary from noted electrical characteristics when VOUT is not set to nominal.
[f] Refer to Output Ripple plots.
[g] Refer to Load Current vs. Ambient Temperature curves.
[h] Refer to Switching Frequency vs. Load current curves.
[i] Contact factory applications for array derating and layout best practices to minimize sharing errors.
[j] Informational only.
Cool-Power® ZVS Switching Regulators
Page 23 of 45
Rev 1.0
10/2018
PI358x-00
PI3586-00 (12.0VOUT) Electrical Characteristics (Cont.)
Specifications apply for –20°C < TINT < 120°C, VIN = 48V, EN = High, unless otherwise noted.[c]
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Timing
Switching Frequency
Fault Restart Delay
fs
[h] While in DCM operating mode only, SYNCI grounded
658
700
30
742
kHz
ms
tFR_DLY
Synchronization Input (SYNCI)
–50% and +10% relative to set switching frequency (fS),
while in DCM operating mode only. [e] and [h]
Synchronization Frequency Range
SYNCI Threshold
fSYNCI
350
4.5
770
kHz
V
VSYNCI
2.5
Synchronization Output (SYNCO)
SYNCO High
VSYNCO_HI
VSYNCO_LO
tSYNCO_RT
tSYNCO_FT
Source 1mA
Sink 1mA
20pF load
20pF load
V
V
SYNCO Low
0.5
1.4
SYNCO Rise Time
SYNCO Fall Time
10
10
ns
ns
Soft Start, Tracking and Error Amplifier
TRK Active Range (Nominal)
TRK Enable Threshold
VTRK
VTRK_OV
VEAIN_OV
ITRK
0
V
40
80
50
8.7
mV
mV
µA
mA
nF
TRK to EAIN Offset
40
30
120
70
Charge Current (Soft Start)
Discharge Current (Fault)
TRK Capacitance, External
Soft Start Time
ITRK_DIS
CTRK_EXT
tSS
VTRK = 0.5V
47
CTRK = 47nF
0.94
7.6
ms
mS
V
[d]
Error Amplifier Transconductance
PSM Skip Threshold
GMEAO
PSMSKIP
ROUT
[d]
[d]
[d]
0.8
Error Amplifier Output Impedance
Internal Compensation Resistor
1
MΩ
kΩ
RZI
6
[c] All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI358x evaluation board with 3 x 3in
dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value.
[d] Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control.
Output voltage is determined by an external feedback divider ratio.
[e] Output current capability may be limited and other performance may vary from noted electrical characteristics when VOUT is not set to nominal.
[f] Refer to Output Ripple plots.
[g] Refer to Load Current vs. Ambient Temperature curves.
[h] Refer to Switching Frequency vs. Load current curves.
[i] Contact factory applications for array derating and layout best practices to minimize sharing errors.
[j] Informational only.
Cool-Power® ZVS Switching Regulators
Page 24 of 45
Rev 1.0
10/2018
PI358x-00
PI3586-00 (12.0VOUT) Electrical Characteristics (Cont.)
100
98
96
94
92
90
88
86
84
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
2
3
4
5
6
7
8
9
2
3
4
5
6
7
7
7
8
8
8
9
9
9
Load Current (A)
30V 48V
Load Current (A)
30V 48V
VIN:
60V
VIN:
60V
60V
60V
Figure 55 — System efficiency, nominal trim,
Figure 58 — System power dissipation, nominal trim,
board temperature = 25ºC
board temperature = 25ºC
100
95
90
85
80
75
4
3.5
3
2.5
2
1.5
1
0.5
0
2
3
4
5
6
7
8
9
2
3
4
5
6
Load Current (A)
30V 48V
Load Current (A)
30V 48V
VIN:
60V
VIN:
Figure 56 — System efficiency, low trim,
Figure 59 — System power dissipation, low trim,
board temperature = 25ºC
board temperature = 25ºC
100
95
90
85
80
75
6
5
4
3
2
1
0
2
3
4
5
6
7
8
9
2
3
4
5
6
Load Current (A)
30V 48V
Load Current (A)
30V 48V
VIN:
60V
VIN:
Figure 57 — System efficiency, high trim,
Figure 60 — System power dissipation, high trim,
board temperature = 25ºC
board temperature = 25ºC
Cool-Power® ZVS Switching Regulators
Page 25 of 45
Rev 1.0
10/2018
PI358x-00
PI3586-00 (12.0VOUT) Electrical Characteristics (Cont.)
98
97
6
5
4
3
2
1
0
96
95
94
93
92
91
90
2
3
4
5
6
7
8
9
2
3
4
5
6
7
7
7
8
8
8
9
9
9
Load Current (A)
30V 48V
Load Current (A)
30V 48V
VIN:
60V
VIN:
60V
60V
60V
Figure 61 — System efficiency, nominal trim,
Figure 64 — System power dissipation, nominal trim,
board temperature = 90ºC
board temperature = 90ºC
96
95
94
93
92
91
90
89
88
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
2
3
4
5
6
2
3
4
5
6
7
8
9
Load Current (A)
30V 48V
Load Current (A)
30V 48V
VIN:
VIN:
60V
Figure 62 — System efficiency, low Trim,
Figure 65 — System power dissipation, low trim,
board temperature = 90ºC
board temperature = 90ºC
98
97
6
5
4
3
2
1
0
96
95
94
93
92
2
3
4
5
6
2
3
4
5
6
7
8
9
Load Current (A)
30V 48V
Load Current (A)
30V 48V
VIN:
VIN:
60V
Figure 63 — System efficiency, high trim,
Figure 66 — System power dissipation, high trim,
board temperature = 90ºC
board temperature = 90ºC
Cool-Power® ZVS Switching Regulators
Page 26 of 45
Rev 1.0
10/2018
PI358x-00
PI3586-00 (12.0VOUT) Electrical Characteristics (Cont.)
98
97
5
4
3
2
1
0
96
95
94
93
92
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
8
8
9
9
9
Load Current (A)
30V 48V
Load Current (A)
30V 48V
VIN:
60V
60V
60V
VIN:
60V
Figure 67 — System efficiency, nominal trim,
Figure 70 — System power dissipation, nominal trim,
board temperature = –20ºC
board temperature = –20ºC
98
97
4
3
2
1
0
96
95
94
93
92
91
90
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
Load Current (A)
30V 48V
Load Current (A)
30V 48V
VIN:
VIN:
60V
Figure 68 — System efficiency, low trim,
Figure 71 — System power dissipation, low trim,
board temperature = –20ºC
board temperature = –20ºC
98
97.5
97
6
5
4
96.5
96
95.5
95
3
2
1
0
94.5
94
93.5
93
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
Load Current (A)
30V 48V
Load Current (A)
30V 48V
VIN:
VIN:
60V
Figure 69 — System efficiency, high trim,
Figure 72 — System power dissipation, high trim,
board temperature = –20ºC
board temperature = –20ºC
Cool-Power® ZVS Switching Regulators
Page 27 of 45
Rev 1.0
10/2018
PI358x-00
PI3586-00 (12.0VOUT) Electrical Characteristics (Cont.)
Figure 73 — Transient response: 50% to 100% load, at 1A/µs;
nominal line, nominal trim,
Figure 76 — Output short circuit, nominal line
COUT = 6 x 47µF ceramic
Figure 74 — Output voltage ripple: nominal line, nominal trim,
Figure 77 — Output voltage ripple: nominal line, nominal trim,
100% load, COUT = 6 x 47µF ceramic, 20MHz BW
50% load, COUT = 6 x 47µF ceramic, 20MHz BW
750
700
650
600
550
500
450
400
350
10
9
8
7
Notes:
6
1. SiP is based on VIN and VS1 paths only.
2. Inductor is based on two leads and base
with inclusion of GEL 30 interface resistance
(0.15mm thick; 3.5W/m-K thermal conductivity).
5
4
3
2
1
0
0
1
2
3
4
5
6
7
8
9
0
20
40
60
80
100
120
140
Load Current (A)
30V 48V
Temperature of Isothermal SiP VIN and VS1 pins,
and PCB at Inductor (ºC)
VIN:
60V
Figure 75 — Switching frequency vs. load, nominal trim
Figure 78 — System thermal specified operating area: max IOUT
at nominal trim vs. temperature at locations noted
Cool-Power® ZVS Switching Regulators
Page 28 of 45
Rev 1.0
10/2018
PI358x-00
PI3586-00 (12.0VOUT) Electrical Characteristics (Cont.)
10
9
8
7
6
5
4
3
2
1
0.8
1
1.2
1.4 1.6 1.8
EAO Voltage (V)
30V 48V
2
2.2
2.4 2.6 2.8
VIN:
60V
Figure 79 — Output current vs. VEAO, nominal trim
8
7
6
5
4
3
2
1
0
0.8
1
1.2
1.4 1.6 1.8
EAO Voltage (V)
30V 48V
2
2.2
2.4 2.6 2.8
VIN:
60V
Figure 80 — Small-signal modulator gain vs. VEAO, nominal trim
60
50
40
30
20
10
0
0.8
1
1.2
1.4 1.6 1.8
EAO Voltage (V)
30V 48V
2
2.2
2.4 2.6 2.8
60V
VIN:
Figure 81 — rEQ_OUT vs VEAO, nominal trim
Cool-Power® ZVS Switching Regulators
Page 29 of 45
Rev 1.0
10/2018
PI358x-00
ENABLE (EN)
Functional Description
EN is the enable pin of the converter. The EN pin is referenced
to SGND and permits the user to turn the regulator on or off.
The EN default polarity is a positive logic assertion. If the EN pin
is left floating or asserted high, the converter output is enabled.
Pulling EN pin below VEN_LO with respect to SGND will disable the
regulator output.
The PI358x-00 is a family of highly integrated ZVS Buck regulators.
The PI358x-00 has an output voltage that can be set within a
prescribed range. Performance and maximum output current are
characterized with a specific external power inductor (see Table 4).
For basic operation, Figure 82 shows the connections and
components required. No additional design or settings are required.
Remote Sensing
If the exact recommended part cannot be used, the description
column of Table 1 serves as a guidance for an alternate part. Any
substitute parts should be equal to or better than the original for
all parameters.
If remote sensing is required, the PI358x-00 product family is
equipped with a general purpose op-amp. This amplifier can allow
full differential remote sense by configuring it as a differential
follower and connecting the VDIFF pin to the EAIN pin.
Reasonable engineering judgment in making the choices for
alternative components and a detailed verification of the
performance would be highly recommended.
Cool-Power® ZVS Switching Regulators
Page 30 of 45
Rev 1.0
10/2018
PI358x-00
DCR
CCR
CQ1B RQ1B
Q2G Q1B
CSL CR
CB
L1
VIN
VIN
VS1
VOUT
RVS1
CVS1
CIN
CIN_HF
PGND
VBS
DVS1
COUT
VOUT
LVBS
COUT_HF
VDR
VCC
VSP
VSN
CVDR
ZVS Buck
REA1
VDIFF
CVCC
EAIN
SYNCO
SYNCI
PWRGD
EN
CEAIN
EAO
CHF
CCOMP
CTRK
REA2
COMP
TRK
Figure 82 — ZVS Buck with required components
Reference Designation
Manufacturer
Part Number
Value
Description
COUT
CIN
Refer to Table 6 – Recommended input and output capacitor components
COUT_HF
CIN_HF
CQ1B
Murata
Murata
TDK
GRM21BR72A474KA73K
GRM21BR72A474KA73K
C1608X7R1C224K080AC
ESR03EZPJ1R3
0.47µF Capacitor, X7R Ceramic, 0.47uF, 100V, 10%, 0805
0.47µF Capacitor, X7R Ceramic, 0.47µF, 100V, 10%, 0805
0.22µF
1.3Ω
Capacitor, X7R, 0.22µF, 16V, 10%, 0603
RES SMD 1.3Ω 5% 1/4W 0603
RQ1B
Rohm
Diode, Schottky, PMEG4002EL
Philips, 40V, 200mA, SOD882
DCR
CCR
Nexperia
Murata
PMEG4002EL
GCM188R71H473KA55D
PMEG10010ELR
47nF
Capacitor, Ceramic, 47nF, 50V, 0603
Diode, Schottky, 100V, 1A,
low VF, low leakage current, SOD123W
DVS1
Nexperia
CVS1
RVS1
TDK
Samsung
TDK
C1608C0G2A102J080AA
RUT1608FR300CS
1nF
Capacitor, C0G, 100V, 1nF, 5%, 0603
RES SMD 300mΩ 1%1/8W 0603
0.3Ω
10µH
2.2µF
LVBS
MLZ2012M100HT
Inductor, 10µH 20%, 300mA, 2Mhz, 0805
Capacitor, X7R Ceramic, 2.2µF, 10V, 0603
CVDR, CVCC
CEAIN
CCOMP
CHF
Murata
GRM188R71A225KE15D
56pF
4.7nF
56pF
CTRK
47nF
L1
Refer to Inductor Pairing
REA1
REA2
Refer to Application Description for Output Voltage Set Point
Table 1 — List of recommended components
Cool-Power® ZVS Switching Regulators
Page 31 of 45
Rev 1.0
10/2018
PI358x-00
Soft Start
Output Overvoltage Protection
The PI358x-00 requires an external soft-start capacitor from the
TRK pin to SGND to control the rate of rise of the output voltage.
Increasing the capacitance of this soft-start capacitor will increase
the start-up ramp period. See, “Soft Start Adjustment and Track,”
in the Applications Description section for more details.
The PI358x-00 family is equipped with output Overvoltage
Protection (OVP) to prevent damage to input voltage sensitive
devices. If the output voltage exceeds VOVP-REL or VOVP-ABS, the
regulator will complete the current cycle and stop switching. The
system will resume operation once the output voltage falls below
the OVP threshold and after Fault Restart Delay.
Output Voltage Selection
Overtemperature Protection
The PI358x-00 output voltage can be set with REA1 and REA2
as shown in Figure 82. Table 2 defines the allowable operational
voltage ranges for the PI358x-00 family. Refer to the Output
Voltage Set Point Application Description for details.
The PI358x features an over temperature protection (OTP), which
will not engage until after the product is operated above the
maximum rated temperature. The OTP circuit is only designed to
protect against catastrophic failure due to excessive temperatures
and should not be relied upon to ensure the device stays within
the recommended operating temperature range. Thermal
shutdown terminates switching and discharges the soft-start
capacitor. The PI358x will restart after the excessive temperature
decreases by 30ºC.
Output Voltage
Device
Nominal
Range
PI3583-00-QFYZ
PI3585-00-QFYZ
PI3586-00-QFYZ
3.3V
2.2 – 4.0V
3.8 – 6.5V
6.5 – 14V
5.0V
Pulse Skip Mode (PSM)
12.0V
PI358x-00 features a Pulse Skip Mode (PSM) to achieve high
efficiency at light loads. The regulators are setup to skip pulses
if EAO falls below a PSM threshold (PSMSKIP). Depending on
conditions and component values, this may result in single pulses
or several consecutive pulses followed by skipped pulses. Skipping
cycles significantly reduces gate drive power and improves light
load efficiency. The regulator will leave PSM once the EAO rises
above the Pulse Skip Mode threshold.
Table 2 — PI358x-00 family output voltage ranges
Output Current Limit Protection
The PI358x-00 has a current limit protection, which prevents
the output from sourcing current higher than the regulator’s
maximum rated current. If the output current exceeds the Current
Limit (IOUT_CL) for 1024μs, a slow current limit fault is initiated and
the regulator is shutdown which eliminates output current flow.
After Fault Restart Delay (tFR_DLY), a soft-start cycle is initiated.
This restart cycle will be repeated indefinitely until the excessive
load is removed.
Variable Frequency Operation
Each PI358x-00 is preprogrammed to a base operating frequency,
with respect to the power stage inductor (see Table 3), to operate
at peak efficiency across line and load variations. At higher loads,
the base operating frequency will decrease to accommodate
storage of more energy in the main inductor. By increasing the
switching period, ZVS operation is preserved throughout the total
input line and output trim voltage ranges, maintaining optimum
efficiency. The ZVS operation is preserved throughout the total
input line voltage range therefore maintaining optimum efficiency.
The PI358x-00 also has short circuit protection which can rapidly
stop switching to protect against catastrophic failure of an external
component such as a saturated inductor. If short circuit protection
is triggered the PI358x-00 will complete the current cycle and stop
switching. The module will attempt to soft start after Fault Restart
Delay (tFR_DLY).
Thermal Characteristics
Input Undervoltage Lockout
Figure 83(a) and 83(c) thermal impedance models that can predict
the maximum temperature of the hottest component for a given
operating condition. This model assumes that all customer PCB
connections are at one temperature, which is PCB equivalent
Temperature TPCB °C.
If VIN falls below the input Undervoltage Lockout (UVLO) threshold,
but remains high enough to power the bias supply, the PI358x-00
will complete the current cycle and stop switching. The system
will soft start once the input voltage is reestablished and after the
Fault Restart Delay.
The SiP model can be simplified as shown in Figure 83(b). which
assumes all PCB nodes are at the same temperature.
Input Overvoltage Lockout
If VIN exceeds the input Overvoltage Lockout (OVLO) threshold
(VOVLO), while the controller is running, the PI358x-00 will
complete the current cycle and stop switching. If VIN remains above
OVLO for at least tFR_DLY, then the input voltage is considered
reestablished once VIN goes below VOVLO-VOVLO_HYS. If VIN goes
below OVLO before tFR_DLY elapses, then the input voltage is
considered reestablished once VIN goes below VOVLO. The system
will soft start once the input voltage is reestablished and after the
Fault Restart Delay.
Cool-Power® ZVS Switching Regulators
Page 32 of 45
Rev 1.0
10/2018
PI358x-00
Maximum SiP Internal Temperature
TINT ( oC )
Thermal Resistance
Thermal Resistances
SiP PCB Pads
θINT-VIN
oC / W
θINT-VS1
oC / W
θINT-PGND
oC / W
SiP Case Top
SiP Power
Dissipation
PDSiP (W)
θINT-TOP oC / W
SiP Case Top
Temperature
TTOP oC
TVS1
oC
TVIN
oC
TPGND
oC
SiP PCB Pad
Temperatures
(a)
Maximum SiP Internal Temperature
INT ( oC )
T
Thermal Resistance
SiP PCB Equivalent
θINT-PCB oC / W
Thermal Resistance
SiP Case Top
SiP Power
Dissipation
PDSiP (W)
θINT-TOP oC / W
Case Top
Temperature
TTOP oC
SiP PCB Common
Temperature
TPCB oC
(b)
Maximum Inductor Internal Temperature
INT ( oC )
T
Thermal Resistance
Inductor Case Top
θINT-TOP oC / W
Thermal Resistance
Inductor Case Bottom
θINT-BOTTOM oC / W
Thermal Resistances
Inductor PCB Pads
θINT-TAB
oC / W
θINT-LEAD1
oC / W
θINT-LEAD2
oC / W
Inductor Power
Dissipation
PDIND (W)
Inductor Case Top
Temperature
TTOP oC
Inductor Case Bottom
Temperature
TVS1
oC
TVOUT
oC
Inductor PCB Pad
Temperatures
TTAB
oC
TBOTTOM oC
(c)
Figure 83 — PI358x-00 thermal model (a), SiP simplified version (b) and inductor thermal model (c)
Cool-Power® ZVS Switching Regulators
Page 33 of 45
Rev 1.0
10/2018
PI358x-00
Where the symbol in Figure 83(a) and (b) is defined as the following:
θINT-TOP
θINT-PCB
θINT-VIN
θINT-VS1
θINT-PGND
the thermal impedance from the hottest component inside the SiP to the top side
the thermal impedance from the hottest component inside the SiP to the customer PCB, assuming all pins are
at one temperature.
the thermal impedance from the hottest component inside the SiP to the circuit board VIN pads.
the thermal impedance from the hottest component inside the SiP to the circuit board VS1 pads.
the thermal impedance from the hottest component inside the SiP to the circuit board
for PGND pin 1 and pin 37 combined.
Where the symbol in Figure 83(c) is defined as the following:
θINT-TOP the thermal impedance from the hot spot to the top surface of the core.
θINT-BOT
the thermal impedance from the hot spot to the bottom surface of the core.
θINT-TAB
the thermal impedance from the hot spot to the metal mounting tab on the core body.
the thermal impedance from the hot spot to one of the mounting leads.
Since the leads are the same thermal impedance, there is no need to specify by explicit pin number.
θINT-LEAD1
θINT-LEAD2
the thermal impedance from the hot spot to the other mounting lead.
The following equation can predict the junction temperature
based on the heat load applied to the SiP and the known ambient
conditions with the simplified thermal circuit model:
TTOP
TPCB
PD +
+
θINT-TOP θINT-PCB
TINT
=
(1)
1
1
+
θINT-TOP θINT-PCB
Cool-Power® ZVS Switching Regulators
Page 34 of 45
Rev 1.0
10/2018
PI358x-00
Thermal Characteristics (Cont.)
Simplified SiP
Thermal Impedances
Detailed SiP Thermal Impedances
Product
System
θINT-TOP
θINT-PCB
θINT-TOP
θINT-VIN
θINT-VS1
θINT-PGND
(°C / W)
(°C / W)
(°C / W)
(°C / W)
(°C / W)
(°C / W)
PI3583-00
PI3585-00
PI3586-00
44
0.53
0.64
0.42
44
54
29
1.4
2.6
0.95
0.92
1.2
7.7
9.6
2.2
54
29
0.88
Table 3 — PI358x-00 SiP thermal impedance
Thermal Impedances
Inductor Part
Number
Product
System
θINT-LEAD1, θINT-LEAD2
θINT-TAB
(°C / W)
θINT-TOP
θINT-BOTTOM
(°C / W)
(°C / W)
(°C / W)
PI3583-00
PI3585-00
PI3586-00
HCV1206-R42-R
HCV1206-R42-R
HCV1206-R90-R
68
110
13
58
16
180
140
190
21
20
58
40
Table 4 — Inductor thermal model parameters
Cool-Power® ZVS Switching Regulators
Page 35 of 45
Rev 1.0
10/2018
PI358x-00
SiP Power Dissipation as Percentage of Total System Losses
100
95
90
85
80
75
70
65
60
55
50
30
35
40
45
50
55
55
55
60
60
60
VIN (V)
IOUT % Rated Load:
10%
30%
100%
100%
100%
Figure 84 — PI3583-00-QFYZ
100
95
90
85
80
75
70
65
60
55
50
30
35
40
45
50
VIN (V)
IOUT % Rated Load:
10%
30%
Figure 85 — PI3585-00-QFYZ
100
90
80
70
60
50
40
30
30
35
40
45
50
VIN (V)
IOUT % Rated Load:
10%
30%
Figure 86 — PI3586-00-QFYZ
Cool-Power® ZVS Switching Regulators
Page 36 of 45
Rev 1.0
10/2018
PI358x-00
Application Description
VOUT
1
Output Voltage Set Point
V
OUT 2
The PI358x-00 family of Buck Regulators utilizes VREF, an internal
reference for regulating the output voltage. The output voltage
setting is accomplished using external resistors as shown in
Figure 87. Select R2 to be at or around 1kΩ for best noise
immunity. Use Equations 2 and 3 to determine the proper
value based on the desired output voltage.
(a)
Master VOUT
VOUT
2
(b)
t
VOUT
Figure 88 — PI358x-00 tracking responses
R1
For Direct Tracking, choose the PI358x-00 with the highest output
voltage as the master and connect the master to the TRK pin of the
other PI358x-00 regulators through a divider (Figure 88) with the
same ratio as the slave’s feedback divider.
EAIN
-
+
VREF
R2
EAO
RZI
COMP
Master VOUT
Figure 87 — External resistor divider network
R1
PI358x
TRK
R1 + R2
VOUT = VREF
•
(2)
(3)
Slave
R2
R2
SGND
VOUT – VREF
VREF
R1 = R2 •
Figure 89 — Voltage divider connections for direct tracking
Where:
VREF = VEAIN
All connected PI358x-00 regulator soft-start slopes will track
with this method. Direct tracking timing is demonstrated in
Figure 88(b). All tracking regulators should have their Enable (EN)
pins connected together to work properly.
Soft Start Adjust and Tracking
The TRK pin offers a means to adjust the regulator’s soft-start
time or to track with additional regulators. The soft-start slope
is controlled by an external capacitor and a fixed charge current
to provide a Soft-Start Time tSS for all PI358x-00 regulators. The
following equation can be used to calculate the proper capacitor
for a desired soft-start times:
Inductor Pairing
The PI358x-00 utilizes an external inductor. This inductor has
been optimized for maximum efficiency performance. Table 5
details the specific inductor value and part number utilized for
each PI358x-00.
CTRK = tTRK • ITRK
(
(4)
)
Max Operating
Temperature
Value
(nH)
Product
System
Mfr.
Part Number
TINT-IND
(°C)
where tTRK is the soft-start time and ITRK is a 50µA internal charge
current (see Electrical Characteristics for limits).
PI3583-00-QFYZ
PI3585-00-QFYZ
PI3586-00-QFYZ
420
420
900
Eaton HCV1206-R42-R
Eaton HCV1206-R42-R
125
125
125
There is typically either proportional or direct tracking implemented
within a design. For proportional tracking between several
regulators at start up, simply connect all PI358x-00 device TRK pins
together. This type of tracking will force all connected regulators to
start up and reach regulation at the same time (see Figure 88(a)).
Eaton
HCV1206-R90-R
Table 5 — PI358x-00 inductor pairing
Cool-Power® ZVS Switching Regulators
Page 37 of 45
Rev 1.0
10/2018
PI358x-00
Parallel Operation
Table 7 shows the recommended input and output capacitors
to be used for the PI358x-00 as well as per capacitor RMS ripple
current and the input and output ripple voltages. Table 6 lists the
recommended input and output ceramic capacitors manufacturer
and part numbers. It is very important to verify that the voltage
supply source as well as the interconnecting lines are stable and
do not oscillate.
Multiple PI358x-00 can be connected in parallel to increase the
output capability of a single output rail. When connecting modules
in parallel, each EAO, TRK and EN pin should be connected
together. EAIN pins should remain separated, each with a REA1
and REA2, to reject noise differences between different modules'
SGND pins. Current sharing will occur automatically in this manner
so long as each inductor is the same value. Refer to the Electrical
Characteristics table for maximum array size and array rated
output current. Current sharing may be considered independent
of synchronization and/or interleaving. Modules do not have to be
interleaved or synchronized to share current.
Input Filter Case 1 — Inductive source and local, external,
input decoupling capacitance with negligible ESR
(i.e.: ceramic type):
The voltage source impedance can be modeled as a series
RLINE LLINE circuit. The high performance ceramic decoupling
capacitors will not significantly damp the network because of their
low ESR; therefore in order to guarantee stability the following
conditions must be verified:
DCR_1 CCR_1
CQ1B_1 RQ1B_1
Q2G Q1B
CSL CR
VIN
CB
L1_1
COUT_1
RVS1_1
VS1_1
LLINE
CIN • rEQ_IN
VIN
CIN_1
VS1
VOUT
RLINE
>
(5)
CIN_HF_1
PGND
VBS
DVS1_1
C
VOUT
LVBS_1
CVDR_1
COUT_HF_1
VDR
VCC
VSP
VSN
ZVS Buck
REA1_1
REA2_1
RLINE << rEQ_IN
(6)
VDIFF
CVCC_1
EAIN
SYNCO
SYNCI
PWRGD
EN
EAO
Where rEQ_IN can be calculated by dividing the lowest line voltage
by the full load input current. It is critical that the line source
impedance be at least an octave lower than the converter’s
dynamic input resistance, Equation 6. However, RLINE cannot
be made arbitrarily low otherwise Equation 5 is violated and
the system will show instability, due to an under-damped
RLC input network.
EAO
CHF_1
EN
COMP
TRK
CCOMP_1
TRK
CTRK_1
DCR_2 CCR_2
CQ1B_2 RQ1B_2
Input Filter case 2 — Inductive source and local, external
input decoupling capacitance with significant RCIN ESR
(i.e., electrolytic type):
CSL CR
CB
Q2G Q1B
L1_2
COUT_2
VIN
VIN
CIN_2
VS1
VOUT
RVS1_2
CVS1_2
CIN_HF_2
PGND
DVS1_2
C
In order to simplify the analysis in this case, the voltage source
VBS
VOUT
impedance can be modeled as a simple inductor LLINE
.
LVBS_2
CVDR_2
OUT_HF_2
VDR
VCC
VSP
VSN
ZVS Buck
Notice that the high performance ceramic capacitors CIN_INT within
the PI358x-00 should be included in the external electrolytic
capacitance value for this purpose. The stability criteria will be:
REA1_2
REA2_2
VDIFF
C
VCC_2
EAIN
SYNCO
SYNCI
PWRGD
EN
EAO
EAO
CHF_2
EN
COMP
TRK
CCOMP_2
rEQ_IN > RC
(7)
IN
TRK
CTRK_2
LLINE
CIN • RCIN
< rEQ_IN
(8)
Figure 90 — PI358x-00 parallel operation
Equation 8 shows that if the aggregate ESR is too small – for
example by using very high quality input capacitors (CIN) – the
Due to the high output current capability of a single module and
CrCM occurring at approximately 50% rated load, interleaving
is not supported.
system will be under-damped and may even become destabilized.
As noted, an octave of design margin in satisfying Equation 7
should be considered the minimum. When applying an electrolytic
capacitor for input filter damping the ESR value must be chosen to
avoid loss of converter efficiency and excessive power dissipation in
the electrolytic capacitor.
Use of the PI358x-00 SYNCI pin is practical only under a limited
set of conditions. Synchronizing to another converter or to a fixed
external clock source can result in a significant reduction in output
power capability or higher than expected ripple.
Filter Considerations
The PI358x-00 requires low impedance ceramic input capacitors
(X7R/X5R or equivalent) to ensure proper start up and high
frequency decoupling for the power stage. The PI358x-00 will
draw nearly all of the high frequency current from the low
impedance ceramic capacitors when the main high side MOSFET(s)
are conducting. During the time the MOSFET(s) are off, the input
capacitors are replenished from the source.
Cool-Power® ZVS Switching Regulators
Page 38 of 45
Rev 1.0
10/2018
PI358x-00
VDR Bias Regulator
Additional System Design Considerations
The VDR bias regulator is a ZVS switching regulator that is intended
primarily to power the internal controller and driver circuitry. The
power capability of this regulator is sized for the PI358x-00, with
adequate reserve for the application it was intended for.
1. Inductive loads: As with all power electronic applications,
consideration must be given to driving inductive loads that
may be exposed to a fault in the system which could result
in consequences beyond the scope of the power supply
primary protection mechanisms. An inductive load could be a
filter, fan motor or even excessively long cables. Consider an
instantaneous short circuit through an un-damped inductance
that occurs when the output capacitors are already at an
initial condition of fully charged. The only thing that limits the
current is the inductance of the short circuit and any series
resistance. Even if the power supply is off at the time of the
short circuit, the current could ramp up in the external inductor
and store considerable energy. The release of this energy will
result in considerable ringing, with the possibility of ringing
nodes connected to the output voltage below ground. The
system designer should plan for this by considering the use of
other external circuit protection such as load switches, fuses,
and transient voltage protectors. The inductive filters should
be critically damped to avoid excessive ringing or damaging
voltages. Adding a high current Schottky diode from the output
voltage to PGND close to the PI358x-00 is recommended for
these applications.
It may be used for as a pullup source for open collector applications
and for other very low power uses with the following restrictions:
1. The total external loading on VDR must be less than IVDR
.
2.No direct connection is allowed. Any noise source that can
disturb the VDR voltage can also affect the internal controller
operation. A series impedance is required between the VDR pin
and any external circuitry.
3. All loads must be locally decoupled using a 0.1μF ceramic
capacitor. This capacitor must be connected to the VDR output
through a series resistor no smaller than 1kΩ, which forms a
low-pass filter.
2. Low voltage operation: There is no isolation from an SELV
(Safety-Extra-Low-Voltage) power system. Powering low voltage
loads from input voltages as high as 60V may require additional
consideration to protect low voltage circuits from excessive
voltage in the event of a short circuit from input to output. A
fast TVS (transient voltage suppressor) gating an external load
switch is an example of such protection.
Input / Output
Manufacturer
Murata
Part Number
Value
100µF
47µF
Description
GRM32EC70J107ME15
GRM32ER71A476KE15
GRM32DR71E106KA12
GRM32ER72A225KA35
GRM32ER71K475KE14L
100µF 6.3V 1210 X7S
47μF 10V 1210 X7R
10μF 25V 1210 X7R
2.2μF 100V 1210 X7R
4.7μF 80V 1210 X7R
Output
Murata
Murata
10µF
Murata
2.2µF
4.7µF
Input
or Murata
Table 6 — Recommended input and output capacitor components
CIN
Ripple
Current
COUT
Ripple
Current
(ARMS)
VOUT
Recovery
Time
(µs)
Load
Current
(A)
VIN
Ripple
(mVP-P
VOUT
Ripple
Load Step VOUT Droop
Product
CIN
COUT
(A)
and Kick
)
(mVP-P
)
(1A/µs)
(mVPP
)
(ARMS
)
6 x
2.2µF
PI3583
PI3585
PI3586
10
10
10
6 x 100µF
6 x 47µF
6 x 10µF
3.3
7.0
430
40
5
5
160
80
80
80
6 x
2.2µF
4.3
5
8.3
6.0
380
60
130
6 x
2.2µF
600
140
4.5
330
Table 7 — Recommended input and output capacitor quantity and performance
Cool-Power® ZVS Switching Regulators
Page 39 of 45
Rev 1.0
10/2018
PI358x-00
Layout Guidelines
To optimize maximum efficiency and low noise performance
from a PI358x-00 design, layout considerations are necessary.
Reducing trace resistance and minimizing high current loop
returns along with proper component placement will contribute to
optimized performance.
VIN
CIN
A typical buck converter circuit is shown in Figure 91. The potential
areas of high parasitic inductance and resistance are the circuit
return paths, shown as LR below.
COUT
Figure 93 — Current flow: Q2 closed
VIN
Figure 94 illustrates the tight path between CIN and COUT (and VIN
and VOUT) for the high AC return current. The external CIN capacitor
needs to be connected to the input of the SiP through a low
inductance connection, which is especially important due to the
lack of internal input capacitance. The PI358x-00 evaluation board
uses a layout optimized for performance in this way.
CIN
COUT
Figure 91 — Typical buck regulator
The path between the COUT and CIN capacitors is of particular
importance since the AC currents are flowing through both of
them when Q1 is turned on. Figure 92, schematically, shows the
reduced trace length between input and output capacitors. The
shorter path lessens the effects that copper trace parasitics can
have on the PI358x-00 performance.
PGND
Inductor
VOUT
VIN
VS1
PGND
ZVS Buck
SiP
VIN
CIN
External Components
COUT
Figure 94 — Recommended layout for optimized AC current
within the SiP, inductor, and ceramic input and
output capacitors
Figure 92 — Current flow: Q1 closed
When Q1 is on and Q2 is off, the majority of CIN’s current is used
to satisfy the output load and to recharge the COUT capacitors.
When Q1 is off and Q2 is on, the load current is supplied by the
inductor and the COUT capacitor as shown in Figure 93. During this
period CIN is also being recharged by the VIN. Minimizing CIN loop
inductance is important to reduce peak voltage excursions when
Q1 turns off. Also, the difference in area between the CIN loop and
COUT loop is vital to minimize switching and GND noise.
Cool-Power® ZVS Switching Regulators
Page 40 of 45
Rev 1.0
10/2018
PI358x-00
Besides the critical power path involving the input/output of the
converter, the input/output capacitors and the inductor, the routing
of some powertrain supporting components are also sensitive
to routing parasitics. For example, LVBS and CVDR are passive
components for internal bias supply switcher; DVS1, CVS1 and RVS1
are clamped to protect VS1, the main switching node. In either
condition, a path with low inductance is required.
CVS1
ZVS Buck
DCR
SiP
CCR
CQ1B
CVDR
RQ1B
LVBS
Figure 95 — Example layout of external components on a PI358x
evaluation board
Here is a list of external components to the SiP which needs to have
low inductance routes:
COUT_HF, CIN_HF, CQ1B, RQ1B, DCR, CCR, DVS1, CVS1, RVS1, LVBS, CVDR
,
CVCC. An example layout from the evaluation board is shown in
Figure 95. These external components are placed locally to the
SiP and connect to the relevant pin with wide traces. Some of
them have the other end connecting through vias to the ground
plane in the underneath layer. A similar practice is expected in
customer applications.
In many cases the powertrain or its related layout is critical and
sensitive to routing parasitics. A direct copy of the Vicor reference
PCB layout is recommended.
Cool-Power® ZVS Switching Regulators
Page 41 of 45
Rev 1.0
10/2018
PI358x-00
Recommended PCB Footprint
E1
c1
c
D1
L
PI358x
L1
PCB LAND PATTERN
GQFN PACKAGE
DIMENSIONAL REFERENCES
REF.
C
MIN.
.15
NOM.
.20
MAX.
.25
C1
D1
E1
L
.25
.30
.35
6.80
7.80
.50
L1
.15
.20
.25
Recommended receiving footprint for PI358x-00 7 x 8mm package.
Cool-Power® ZVS Switching Regulators
Page 42 of 45
Rev 1.0
10/2018
PI358x-00
Package Drawings
PIN 1 INDEX
B
PI358X GQFN
DIMENSIONAL REFERENCES
REF.
A
MIN.
.80
NOM.
.85
MAX.
.90
A1
b
.00
-
.05
.10 REF
.30 REF
.50 REF
.50 REF
.95 REF
.65 REF
.75 REF
.20 REF
.60 REF
.55 REF
.20
b1
b2
b3
b4
b5
b6
b7
b8
b9
c
c1
c2
D
E
f
D
.15
.25
.25
.35
.30
.40 BSC
7.00 BSC
8.00 BSC
2.20
2.15
.85
2.25
.95
f1
.90
f2
f3
f4
f5
f7
f8
f9
.35
.40
2.35
2.90
2.55
2.85
4.90
3.20
.45
2.30
2.85
2.50
2.80
4.85
3.15
2.40
2.95
2.60
2.90
4.95
3.25
A
E
TOP VIEW
DETAIL A
SIDE VIEW
0.10
C
NOTES:
1. 'c2' REPRESENTS THE BASIC TERMINAL PITCH. SPECIFIES THE GEOMETRIC
POSITION OF THE TERMINAL AXIS.
2. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS.
3. COPLANARITY SHALL NOT EXCEED 0.08 MM.
4. WARPAGE SHALL NOT EXCEED 0.10 MM.
A
5. PACKAGE LENGTH / PACKAGE WIDTH ARE CONSIDERD AS SPECIAL
CHARACTERISTIC(S).
6. EXPOSED METALLIZED PADS ARE CU PADS WITH SURFACE FINISH
PROTECTION.
36X
0.08
C
7. ALL DIMENSIONS ARE IN MM UNLESS OTHERWISE SPECIFIED.
8. RoHS COMPLIANT PER CST-0001LATEST REVISION.
C
DETAIL DETAIL A
SCALE 75 : 1
A1
b8
f
b
f2
b7
b8
b8
26 27 28 29 30 31 32 33 34 35 36
f1
25
24
23
22
21
20
19
18
17
16
15
f2
1
2
b2
b9
c2
f4
b8
f3
b8
b8
b2
f9
f8
b3
b8
c
b4
b8
f5
3
f4
14
13
b8
b5
f7
12 11 10
b1
9
8
7
6
5
4
b7
C
b6
c1
b
b
36X
M
0.10
A B
BOTTOM VIEW
Cool-Power® ZVS Switching Regulators
Page 43 of 45
Rev 1.0
10/2018
PI358x-00
Revision History
Revision
Date
Description
Page Number(s)
1.0
10/09/18
Initial release
n/a
Cool-Power® ZVS Switching Regulators
Page 44 of 45
Rev 1.0
10/2018
PI358x-00
Vicor’s comprehensive line of power solutions includes high density AC-DC and DC-DC modules and
accessory components, fully configurable AC-DC and DC-DC power supplies, and complete custom
power systems.
Information furnished by Vicor is believed to be accurate and reliable. However, no responsibility is assumed by Vicor for its use. Vicor
makes no representations or warranties with respect to the accuracy or completeness of the contents of this publication. Vicor reserves
the right to make changes to any products, specifications, and product descriptions at any time without notice. Information published by
Vicor has been checked and is believed to be accurate at the time it was printed; however, Vicor assumes no responsibility for inaccuracies.
Testing and other quality controls are used to the extent Vicor deems necessary to support Vicor’s product warranty. Except where
mandated by government requirements, testing of all parameters of each product is not necessarily performed.
Specifications are subject to change without notice.
Visit http://www.vicorpower.com/dc-dc-converters-board-mount/cool-power-pi33xx-and-pi34xx for the latest product information.
Vicor’s Standard Terms and Conditions and Product Warranty
All sales are subject to Vicor’s Standard Terms and Conditions of Sale, and Product Warranty which are available on Vicor’s webpage
(http://www.vicorpower.com/termsconditionswarranty) or upon request.
Life Support Policy
VICOR’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE
EXPRESS PRIOR WRITTEN APPROVAL OF THE CHIEF EXECUTIVE OFFICER AND GENERAL COUNSEL OF VICOR CORPORATION. As used
herein, life support devices or systems are devices which (a) are intended for surgical implant into the body, or (b) support or sustain life and
whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to
result in a significant injury to the user. A critical component is any component in a life support device or system whose failure to perform
can be reasonably expected to cause the failure of the life support device or system or to affect its safety or effectiveness. Per Vicor Terms
and Conditions of Sale, the user of Vicor products and components in life support applications assumes all risks of such use and indemnifies
Vicor against all liability and damages.
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Vicor and its subsidiaries own Intellectual Property (including issued U.S. and Foreign Patents and pending patent applications) relating to the
products described in this data sheet. No license, whether express, implied, or arising by estoppel or otherwise, to any intellectual property
rights is granted by this document. Interested parties should contact Vicor’s Intellectual Property Department.
The products described on this data sheet are protected by U.S. Patents. Please see www.vicorpower.com/patents for the latest
patent information.
Contact Us: http://www.vicorpower.com/contact-us
Vicor Corporation
25 Frontage Road
Andover, MA, USA 01810
Tel: 800-735-6200
Fax: 978-475-6715
www.vicorpower.com
email
Customer Service: custserv@vicorpower.com
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All other trademarks, product names, logos and brands are property of their respective owners.
Cool-Power® ZVS Switching Regulators
Page 45 of 45
Rev 1.0
10/2018
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