GCM188R71H224KA64D [ONSEMI]
NCV97311A Evaluation Board Users Manual;
| 型号： | GCM188R71H224KA64D |
| 厂家： | 
ONSEMI |
| 描述： | NCV97311A Evaluation Board Users Manual |
| 文件： | 总17页 (文件大小：1663K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NCV97311MW50AGEVB
NCV97311A Evaluation
Board User'sꢀManual
Description
The NCV97311A is 3−output regulator consisting of a low−Iq
battery−connected 3 A 2 MHz non−synchronous switcher and two
low−voltage 1.5 A 2 MHz synchronous switchers; all using integrated
power transistors.
The high−voltage switcher is capable of converting a 4.1 V to 18 V
battery input to a 5 V output at a constant 2 MHz switching frequency,
delivering up to 3 A. In overvoltage conditions up to 36 V, the
switching frequency folds back to 1 MHz; in load dump conditions up
to 45 V the regulator shuts down.
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EVAL BOARD USER’S MANUAL
The output of the battery−connected buck regulator serves as the low
voltage input for the 2 synchronous switchers. Each downstream output
is adjustable from 1.2 V to 3.3 V, with a 1.5 A current limit and
a constant 2 MHz switching frequency. Each switcher has
independent enable and reset pins, giving extra power management
flexibility.
For low−Iq operating mode the low−voltage switchers are disabled,
and the standby rail is supplied by a low−Iq LDO (up to 150 mA) with
a typical Iq of 30 mA. The LDO regulator is in parallel to the
high−voltage switcher, and is activated when the switcher is forced in
standby mode.
All 3 SMPS outputs use peak current mode control with internal
slope compensation, internally−set soft−start, battery undervoltage
lockout, battery overvoltage protection, cycle−by−cycle current
limiting, hiccup mode short−circuit protection and thermal shutdown.
An error flag is available for diagnostics.
Figure 1. Evaluation Board Photo
Key Features
• Low Quiescent Current in Standby Mode
• 2 Microcontroller Enabled Low Voltage Synchronous Buck
Converters
• Large Conversion Ratio of 18 V to 3.3 V Battery Connected
Switcher
• Wide Input of 4.1 to 45 V with Undervoltage Lockout (UVLO)
• Fixed Frequency Operation Adjustable from 2.0 to 2.6 MHz
• Internal 1.5 ms Soft−starts
• Cycle−by−cycle Current Limit Protections
• Hiccup Overcurrent Protections (OCP)
• Individual Reset Pins with Adjustable Delays
• These Devices are Pb−Free, Halogen Free/BFR Free
and are RoHS Compliant
Typical Applications
• Infotainment, Body Electronics, Telematics, ECU
© Semiconductor Components Industries, LLC, 2019
1
Publication Order Number:
April, 2019 − Rev. 0
EVBUM2621/D
NCV97311MW50AGEVB
Figure 2. NCV9731150A Block Diagram
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2
NCV97311MW50AGEVB
TYPICAL APPLICATION
Figure 3. Typical Application
Function
Table 1. EVALUATION BOARD TERMINALS
Pin Name
VBAT
GND
Positive dc input voltage
Common dc return
VOUT1
VOUT2
VOUT3
EN
Positive 5.0 V dc output voltage (LDO / switcher 1)
Positive DC output voltage (switcher 2)
Positive DC output voltage (switcher 3)
Master enable input. Includes jumper J3 to connect to VBAT
Standby enable input. Includes jumper J4 to connect to VBAT
Switcher 2 enable input. Includes jumper J6 to connect to VOUT1
Switcher 3 enable input. Includes jumper J5 to connect to VOUT1
Error flag combining temperature and input and output voltage sensing
Reset with adjustable delay. Goes low when the VOUT1 is out of regulation
Reset with adjustable delay. Goes low when the VOUT2 is out of regulation
Reset with adjustable delay. Goes low when the VOUT3 is out of regulation
STBYB
EN2
EN3
ERRB
RST1B
RST2B
RST3B
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NCV97311MW50AGEVB
Table 2. ABSOLUTE MAXIMUM RATINGS (Voltages are with respect to GND)
Rating
Value
Unit
V
Dc Supply Voltage (VBAT, EN, STBYB)
Dc Supply Voltage (VIN2, VIN3)
−0.3 to 36
−0.3 to 12
−0.3 to 6
V
Dc Supply Voltage (RSTB1, RSTB2,
RSTB3, ERRB, EN2, EN3)
V
Storage Temperature Range
−55 to 150
°C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
Table 3. ELECTRICAL CHARACTERSITICS (T = 25°C, 4.5 ≤ VIN ≤ 18 V, IOUT ≤ 2 A, unless otherwise specified)
A
Characteristic
REGULATION
Conditions
Typical Value
Unit
Output Voltage (VOUT1)
Output Voltage (VOUT2)
Output Voltage (VOUT3)
Line Regulation (VOUT1)
Line Regulation (VOUT2)
Line Regulation (VOUT3)
Load Regulation (VOUT1)
Load Regulation (VOUT2)
Load Regulation (VOUT3)
SWITCHING
5.0
3.3
V
V
1.2
V
I
I
I
= 1.0 A
= 1.0 A
0.03
0.01
0.001
0.3
%
%
%
%
%
%
OUT1
OUT2
OUT3
= 1.0 A
V
V
V
= 13.2 V
= 13.2 V
= 13.2 V
BAT
BAT
BAT
0.02
0.03
Switching Frequency
2.0
1.4
MHz
ms
Soft−start Time
R
Frequency Range
50 kW ≥ R
≥ 10 kW
2.0 to 2.6
MHz
OSC
OSC
CURRENT LIMIT
Peak Current Limit (VOUT1)
Peak Current Limit (VOUT1)
Peak Current Limit (VOUT2)
Peak Current Limit (VOUT3)
PROTECTION
STBYB = 0 V
STBYB = 5 V
0.2
4.4
2.9
2.9
A
A
A
A
Input Undervoltage Lockout (UVLO)
Input Overvoltage Protection
Thermal Warning
V
Decreasing
Increasing
3.9
36
V
V
BAT
V
BAT
T Rising
J
150
170
°C
°C
Thermal Shutdown
T Rising
J
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
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NCV97311MW50AGEVB
A D E P
3 3
S T B 2
R M I N
F B 2
V O U T
S T B 3
E N 3
F B 3
2 5
2 6
2 7
2 8
2 9
3 0
3 1
3 2
1 6
1 5
1 4
R S T 3
1 3
V I N L
S T B 1
1 D G N
1 2
R S T 2
1 1
1 0
V 1 V D R
S W 1
E N 2
E R R
9
2
2
1
1
Figure 4. NCV97311AGEVB 5.0 V Board Schematic
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NCV97311MW50AGEVB
Operational Guidelines
1. Connect a dc input voltage, within the 6.0 V to 36
V range, between VBAT and GND.
2. Connect a load (< 150 mA) between VOUT1 and
GND
5. Connect a dc enable voltage, within the 2.0 V to
6 V range, between EN2 and GND. This will
power up switcher 2. You may use jumper J4 to
connect EN2 directly to VOUT1.
3. Connect a dc enable voltage, within the 2.0 V to
36 V range, between EN and GND. This will
enable the internal LDO for low Iq mode. You
may use jumper J1 to connect EN directly to
VBAT.
The VOUT2 signal should be 3.3 V.
6. Connect a dc enable voltage, within the 2.0 V to
6 V range, between EN3 and GND. This will
power up switcher 3. You may use jumper J3 to
connect EN3 directly to VOUT1.
a. The VOUT1 signal should be 5.0 V.
b. The VOUT2 signal should be disabled
(regardless of EN2 state) and read 0 V.
c. The VOUT3 signal should be disabled
(regardless of EN3 state) and read 0 V.
4. Connect a dc enable voltage, within the 2.0 V to
36 V range, between STBYB and GND. This will
exit low Iq mode and power up switcher 1. You
may use jumper J2 to connect STBYB directly to
VBAT.
The VOUT3 signal should be 1.2 V.
The VOUT1 signal should still be 5.0 V. You
may now add a higher load to VOUT1.
Figure 5. NCV97311A Board Connections
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NCV97311MW50AGEVB
APPLICATION INFORMATION
Output Voltage Selection
The voltage outputs for switcher 2 and switcher 3 are
adjustable and can be set with a resistor divider. The FB
reference for both switchers is 1.2 V.
Time Domain
Frequency Domain
Unmodulated
VOUT 2 (VOUT 3)
V
V
t
fc 3fc 5fc 7fc 9fc
R UPPER
FBx = 1 .2 V
R LOWER
t
fc 3fc 5fc 7fc 9fc
The spread spectrum used in the NCV97311A is an
“up−spread” technique, meaning the switching frequency is
spread upward from the 2.0 MHz base frequency. For
example, a 5 % spread means that the switching frequency
is swept (spread) from 2.0 MHz up to 2.1 MHz in a linear
fashion – this is called the modulation depth. The rate at
which this spread takes place is called the modulation
frequency. For example, a 10 kHz modulation frequency
means that the frequency is swept from 2.0 MHz to 2.1 MHz
in 50 ms and then back down from 2.1 MHz to 2.0 MHz in
50 ms.
The upper resistor is set to 10 kW and is part of the
feedback loop. To maintain stability over all conditions, it is
recommended to change the only the lower feedback resistor
to set the output voltage. Use the following equation:
VFB
RLOWER + RUPPER
VOUT*VFB
Some common setups are listed below:
Desired
R
R
LOWER
UPPER
Output (V)
(kW, 1%)
(kW, 1%)
VREF (V)
1.2
1.2
1.5
1.8
2.5
3.3
10.0
NP
1.2
10.0
40.0
1.2
10.0
20.0
1.2
10.0
9.31
1.2
10.0
5.76
Spread Spectrum
In SMPS devices, switching translates to higher
efficiency. Unfortunately, the switching leads to a much
noisier EMI profile. We can greatly decrease some of the
radiated emissions with some spread spectrum techniques.
Spread spectrum is used to reduce the peak electromagnetic
emissions of a switching regulator.
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NCV97311MW50AGEVB
The modulation depth and modulation frequency are each
set by 2 external resistors to GND. The modulation
frequency can be set from 5 kHz up to 50 kHz using a resistor
from the RMOD pin to GND. The modulation depth can be
set from 3% up to 30% of the nominal switching frequency
using a resistor from the RDEPTH pin to GND. Please see
the curves below for typical values:
Spread spectrum is automatically turned off when there is
a short to GND or an open circuit on either the RMOD pin
or the RDEPTH pin. Please be sure that the ROSC pin is an
open circuit when using spread spectrum.
TYPICAL PERFORMANCE
Efficiency
NCV97311A − SW1 Efficiency − 5.0 V
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
VIN = 8.0 V
VIN = 13.2 V
VIN = 18.0 V
0.2
0.1
0
0
0.5
1
1.5
2
2.5
3
3.5
Figure 6. Efficiency for SW1 with a 5.0 V Output
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NCV97311MW50AGEVB
NCV97311A − SW2 Efficiency − 3.3 V
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
VIN = 5.0 V
VIN = 8.0 V
0
0.5
1
1.5
2
2.5
Output Current (A)
Figure 7. Efficiency for SW2 with a 3.3 V Output
NCV97311A − SW3 Efficiency − 1.2 V
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
VIN = 3.3 V
VIN = 5.0 V
0
0.5
1
1.5
2
2.5
Output Current (A)
Figure 8. Efficiency for SW3 with a 1.2 V Output
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NCV97311MW50AGEVB
Line Regulation
NCV97311A − SW1 − 3.3 V − Line Regulation
2.00%
1.50%
1.00%
0.50%
IOUT = 100 mA
IOUT = 500 mA
IOUT = 1.0 A
IOUT = 2.0 A
IOUT = 3.0 A
0.00%
0
5
10
15
20
25
30
−0.50%
−1.00%
−1.50%
−2.00%
Input Voltage (V)
Figure 9. Line Regulation for SW1 with a 3.3 V Output
NCV97311A − SW2 − 3.3 V − Line Regulation
0.10%
0.05%
0.00%
3
IOUT = 100 mA
IOUT = 500 mA
IOUT = 1.0 A
IOUT = 2.0 A
4
5
6
7
8
9
−0.05%
−0.10%
Input Voltage (V)
Figure 10. Line Regulation for SW2 with a 3.3 V Output
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NCV97311MW50AGEVB
NCV97311A − SW3 − 1.2 V − Line Regulation
0.10%
0.05%
0.00%
IOUT = 100 mA
IOUT = 500 mA
IOUT = 1.0 A
IOUT = 2.0 A
3
3.5
4
4.5
5
5.5
−0.05%
−0.10%
Input Voltage (V)
Figure 11. Line Regulation for SW3 with a 1.2 V Output
Load Regulation
NCV97311A − SW1 Load Regulation − 5.0 V
0.40%
0.30%
0.20%
0.10%
0.00%
−0.10%
−0.20%
−0.30%
VIN = 8.0 V
VIN = 13.2 V
VIN = 18.0 V
−0.40%
0
0.5
1
1.5
2
2.5
3
3.5
Output Current (A)
Figure 12. Load Regulation for SW1 with a 5.0 V Output
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NCV97311MW50AGEVB
NCV97311A − SW2 Load Regulation − 3.3 V
0.10%
0.05%
0.00%
−0.05%
−0.10%
VIN = 5.0 V
VIN = 8.0 V
0
0.5
1
1.5
2
2.5
Output Current (A)
Figure 13. Load Regulation for SW2 with a 3.3 V Output
NCV97311A − SW3 Load Regulation − 1.2 V
0.10%
0.05%
0.00%
−0.05%
−0.10%
VIN = 3.3 V
VIN = 5.0 V
0
0.5
1
1.5
2
2.5
Output Current (A)
Figure 14. Load Regulation for SW3 with a 1.2 V Output
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NCV97311MW50AGEVB
SCHEMATIC
A D E P
3 3
S T B 2
R M I N
F B 2
V O U T
S T B 3
E N 3
F B 3
2 5
2 6
2 7
2 8
2 9
3 0
3 1
3 2
1 6
1 5
1 4
R S T 3
1 3
V I N L
S T B 1
1 D G N
1 2
R S T 2
1 1
1 0
V 1 V D R
S W 1
E N 2
E R R
9
2
2
1
1
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NCV97311MW50AGEVB
PCB LAYOUT
Figure 15. Top View
Figure 16. Bottom View
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NCV97311MW50AGEVB
BILL OF MATERIALS
Table 4. BILL OF MATERIALS
Substi-
tution
Allowed
Reference
Designator(s)
Manufacturer’s
Part Number
Qty.
Description
Value
Tolerance
Footprint
Manufacturer
C1, C2, CSNB2,
CSNB3
4
CAP CER 100 pF
50 V 5% NP0 0603
100 pF
5%
603
Murata Electronics North
America
GCM1885C1H101JA16D
GCM188R71H104KA57D
GCM188R71H224KA64D
GCM1885C1H331JA16D
GCM1885C1H220JA16D
GCM188R71C474KA55D
C3216X7R1H475K160AC
GCM31MR71H105KA55L
GCM31CR71H225KA55L
EMZA500ADA101MHA0G
GCM188R71C105KA64D
CGA4J3X7R1C475K125AB
GCM31CR71A106KA64L
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
C3, CBST1, CBST2,
CBST3, CDRV1
3
2
1
1
1
3
1
1
1
1
1
7
CAP CER 0.1 mF
50 V 10% X7R 0603
0.1 mF
0.22 mF
330 pF
22 pF
10%
10%
5%
603
603
Murata Electronics North
America
CBST1, CDRV1
CCOMP1
CCOMP2
CDRV2
CAP CER 0.22 mF
50 V 10% X7R 0603
Murata Electronics North
America
CAP CER 330 pF
50 V 5% NP0 0603
603
Murata Electronics North
America
CAP CER 22 pF
50 V 5% NP0 0603
5%
603
Murata Electronics North
America
CAP CER 0.47 mF
16 V 10% X7R 0603
0.47 mF
4.7 mF
1.0 mF
2.2 mF
100 mF
1.0 mF
4.7 mF
10 mF
10%
10%
10%
10%
20%
10%
10%
10%
603
Murata Electronics North
America
CIN0, CIN1, CIN2
CIN3
CAP CER 4.7 mF
50 V 10% X7R 1206
1206
1206
1206
FK_V_E
603
TDK Corporation
CAP CER 1.0 mF
50 V 10% X7R 1206
Murata Electronics North
America
CIN4
CAP CER 2.2 mF
50 V 10% X7R 1206
Murata Electronics North
America
CIN5
CAP ALUM 100 mF
50 V 20% SMD
Chemi−Con
CO14
CAP CER 1 mF 16 V
10% X7R 0603
Murata Electronics North
America
CO15
CAP CER 4.7 mF
16 V 10% X7R 0805
805
TDK Corporation
COUT11, COUT12,
COUT13, COUT21,
COUT22, COUT31,
COUT32
CAP CER 10 mF
10 V 10% X7R 1206
1206
Murata Electronics North
America
R1, R2
2
6
RES 0.0 W 1/10 W
0 W
Jumper
1%
603
603
Vishay/Dale
Vishay/Dale
CRCW06030000Z0EA
CRCW060310K0FKEA
Yes
Yes
0603 SMD
R3, R4, R5, R6,
RFB2U, RFB3U
RES 10.0 kW
1/10 W 1% 0603
SMD
10.0 kW
R7
1
1
RES 0.0 W 1/4 W
0 W
Jumper
1%
1206
603
Vishay/Dale
Vishay/Dale
CRCW12060000Z0EA
CRCW060312K4FKEA
Yes
Yes
1206 SMD
RCOMP1
RES 12.4 kW
1/10 W 1% 0603
SMD
12.4 kW
RFB2L
1
RES 5.76 kW
1/10 W 1% 0603
SMD
5.76 kW
1%
603
Vishay/Dale
CRCW06035K76FKEA
Yes
RMIN1, RMIN2,
RMIN3
3
2
1
2
RES 100 W 1/4 W
100 W
10.0 W
1%
1%
1206
603
Vishay/Dale
Vishay/Dale
CRCW1206100RFKEA
CRCW060310R0FKEA
NRVB440MFST1G
XAL4020−102ME
Yes
Yes
No
1% 1206 SMD
RSNB2, RSNB3
RES 10.0 W 1/10 W
1% 0603 SMD
D1
DIODE SCHOTTKY
4.0 A 40 V SMB
40 V/4.0 A
1.0 mH
N/A
20%
SMB_DIODE
XAL4020−102ME
ON Semiconductor
Coilcraft
L0, L3
High Current
No
Shielded Inductor
1.0 mH, 8.7 A SAT
L1
L2
1
1
High Current
Shielded Inductor
4.7 mH, 4.5 A SAT
4.7 mH
2.2 mH
20%
20%
XAL4030−472ME
XAL4020−222ME
Coilcraft
Coilcraft
XAL4030−472ME
XAL4020−222ME
No
No
High Current
Shielded Inductor
2.2 mH, 5.6 A SAT
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NCV97311MW50AGEVB
Table 4. BILL OF MATERIALS (continued)
Substi-
tution
Allowed
Reference
Designator(s)
Manufacturer’s
Part Number
Qty.
Description
Value
Tolerance
Footprint
Manufacturer
EN, EN2, EN3,
ERRB, GNDL,
PGND1_1,
21
PIN INBOARD
.042″ HOLE
1000/PKG
N/A
N/A
TP
Vector Electronics
K24C/M
Yes
PGND1_2,
PGND2_1,
PGND3_1, RST1B,
RST2B, RST3B,
STBYB, SW1, SW2,
SW3, VIN2, VBAT,
VOUT1_1,
VOUT2_1,
VOUT3_1
GND0, GND1,
GND2, GND3, VBAT,
VOUT1, VOUT2,
VOUT3
8
4
CONN JACK
BANANA UNINS
PANEL MOU
N/A
N/A
N/A
BANANA
JMP
Emerson Network
Power Connectivity
Johnson
108−0740−001
22−28−4023
No
J1, J2, J3, J4
CONN HEADER
2POS .100 VERT
GOLD
N/A
N/A
Molex Connector
Corporation
Yes
4
9
CONN JUMPER
SHORTING GOLD
N/A
N/A
JMP
Sullins Connector
Solutions
SSC02SYAN
Yes
Yes
COMP1, DRV1,
FB2, FB3, RMIN,
TP1, TP2, TP3,
VIND
CIRCUIT PIN
PRNTD .020″D
.425″L
Do Not
Populate
SMALLTP
Mill−Max Manufacturing
3128−2−00−15−00−00−08−0
Corp.
RDEPTH, RFB3L,
RMOD, ROSC
4
1
Do Not Populate
603
Yes
No
U1
Automotive
Battery−Connected
Low IQ
N/A
N/A
QFN32
ON Semiconductor
NCV97311MW50AR2G
Multi−Output PMU
NOTE: All devices are RoHS Compliant.
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ON Semiconductor and the ON Semiconductor logo are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or
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for research, development, demonstration and evaluation purposes and should as such only be used in laboratory/development areas by persons with an engineering/technical training
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