PT8105N [TI]
40-A 3.3/5-V Input Programmable Integrated Switching Regulator; 40 -A 3.3 / 5 - V输入可编程集成开关稳压器
| 型号： | PT8105N |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 40-A 3.3/5-V Input Programmable Integrated Switching Regulator |
| 文件： | 总14页 (文件大小：229K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PT8100 Series
40-A 3.3/5-V Input Programmable
Integrated Switching Regulator
SLTS157A
(Revised 8/23/2002)
Features
• 40ADC Output Current
• +3.3V or +5V Input
• Low Output Voltages:
0.8V—2.7V
• High Efficiency
• Programmable Output:
(VRM Compatible 5-bit Codes)
• Output Remote Sense
• Short-Circuit Protection
• Thermal Shutdown
• Standby On/Off Control
• Space-Saving Package
• Solderable Copper Case
• Multiphase Topology
Description
Ordering Information
The PT8100 Excalibur™ power
modules are a family of high-output,
high-efficiency, fully integrated
switching regulators (ISRs), housed
in a solderable 31-pin space-saving
copper package. Modules are avail-
able for operation from either a 3.3V
or 5V nominal input bus voltage.
Each provides up to 40A of output
current at output voltages as low
as 0.8V. The output voltage is pro-
grammable via a 5-bit input code.
The PT8100 series incorporates
a state-of-the-art, 2-phase, multiple
power path topology. This extends
the output current range while pro-
viding superior transient response
and input current ripple performance.
The modules are designed for high-
end computing and signal processing
applications, both of which demand
high output currents at low supply
voltages.
The modules have a number of
standard features to facilitate system
integration. These include short-
circuit protection, thermal shutdown,
standby (On/Off) control, and an
output remote sense to compensate
for voltage drop between the regu-
lator and the load. In addition, the
voltage programming codes are
compatible with Intel’s® VRM
specifications.
O utput Voltage
Input
Bus
Part N o.
Progam Range
PT 8101r =1.300 to 2.70V 5V
PT 8102r =1.075 to 1.85V 5V
PT 8103r =1.075 to 1.85V 3.3V
PT 8104r =1.050 to 1.825V 5V
PT 8105r =0.800 to 1.575V 3.3V
PT Series Suffix
(PT1234x)
Case/Pin
Configuration
O rder
Suffix
Package
Code
Vertical
Horizontal
SMD
N
A
C
(EKH)
(EKF)
(EKG)
(Reference the applicable package code drawing for
the dimensions and PC board layout)
Standard Application (See p.3 for PT8104 application schematic)
PROGRAMMING PINS
VID0
VID1
VID2
VID3
VID4
REMOTE SENSE
VID
Common
11
5
4
3
2
1
31
L1
VOUT
PT8100 Series
(Except PT8104)
12–16
23–30
VIN
1µH
L
O
A
D
C3
100µF
Optional
C1
1,500µF
Required
C2
660µF
Required
+
+
+
6
17–22
GND
GND
C1
C2
=
=
Required 1500µF electrolytic input capacitor
Required 660µF low ESR OS-Con®, or
1,200µF aluminum electrolytic
STBY*
Lin/C3
=
Optional input filter components. 1µH input
choke and 100µF electroytic capacitor.
1
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
PT8100 Series
40-A 3.3/5-V Input Programmable
Integrated Switching Regulator
Pin-Out Information (Except PT8104 –see p.3)
Pin Function
Pin Function
12 Vin
Pin Function
22 GND
23 Vout
1
2
3
4
5
6
7
8
9
VID 0
VID 1
13 Vin
VID 2
14 Vin
24 Vout
VID 3
15 Vin
25 Vout
VID 4
16 Vin
26 Vout
STBY *
17 GND
18 GND
19 GND
20 GND
21 GND
27 Vout
Do Not Connect
Do Not Connect
Do Not Connect
28 Vout
29 Vout
30 Vout
10 Do Not Connect
11 VID Common
31 Remote Sense
* For STBY pin:
Open =Output Enabled
VID Common =Output Disabled
Voltage Programming Information (Except PT8104 –see p.3)
PT8102/8103
(VRM 9.1)
PT8105
(Custom Code)
PT8101
(VRM 8.4)
VID 4=1
Vout
VID 4=0
Vout
VID 4=1
Vout
VID 4=0
Vout
1.200V
VID 4=1
VID 4=0
Vout
1.30V
Vout (iv)
2.00
2.10
2.30
2.40
2.50
2.60
2.70
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
VID 3 VID 2 VID 1 VID 0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0.800V
0.825V
0.850V
0.875V
0.900V
0.925V
0.950V
0.975V
1.000V
1.025V
1.050V
1.075V
1.100V
1.125V
1.150V
1.175V
1.075V
1.100V
1.125V
1.150V
1.175V
1.200V
1.225V
1.250V
1.275V
1.300V
1.325V
1.350V
1.375V
1.400V
1.425V
1.450V
1.475V
1.500V
1.525V
1.550V
1.575V
1.600V
1.625V
1.650V
1.675V
1.700V
1.725V
1.750V
1.775V
1.800V
1.825V
1.850V
1.225V
1.250V
1.275V
1.300V
1.325V
1.350V
1.375V
1.400V
1.425V
1.450V
1.475V
1.500V
1.525V
1.550V
1.575V
1.35V
1.40V
1.45V
1.50V
1.55V
1.60V
1.65V
1.70V
1.75V
1.80V
1.85V
1.90V
1.95V
2.00V
2.05V
Notes:
i) Logic 0 = Connect to VID Common
ii) Logic 1 = Open circuit (no pull-up resistors)
iii) VID3 and VID4 may not be changed while the unit is operating.
iv) The output voltage of the PT8101 must not be set higher than 2.7V.
2
For technical support and more information, see inside back cover or visit www.ti.com
PT8100 Series
40-A 3.3/5-V Input Programmable
Integrated Switching Regulator
Pin-Out Information (PT8104 only)
Voltage Programming Information (PT8104 only)
PT8104
(VRM 8.5)
Pin Function
Pin Function
1
2
3
4
5
6
7
8
9
VID 25mV
VID 0
17 GND
18 GND
19 GND
20 GND
21 GND
22 GND
23 Vout
VID 25mV=0
Vout
1.300V
VID 25mV=1
Vout
VID 3 VID 2 VID 1 VID 0
VID 1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1.325V
VID 2
1.350V
1.400V
1.450V
1.500V
1.550V
1.600V
1.650V
1.700V
1.750V
1.800V
1.050V
1.100V
1.150V
1.200V
1.250V
1.375V
1.425V
1.475V
1.525V
1.575V
1.625V
1.675V
1.725V
1.775V
1.825V
1.075V
1.125V
1.175V
1.225V
1.275V
VID 3
STBY
Do Not Connect
Do Not Connect
Do Not Connect
24 Vout
25 Vout
10 Do Not Connect
11 VID Common
12 Vin
26 Vout
27 Vout
28 Vout
13 Vin
29 Vout
14 Vin
30 Vout
15 Vin
31 Remote Sense
16 Vin
* For STBY pin:
Open =Output Enabled
Notes:
VID Common =Output Disabled
i) Logic 0 = Connect to VID Common
ii) Logic 1 = Open circuit (no pull-up resistors)
iii) VID3 and VID4 may not be changed while the unit is operating.
Standard Application (PT8104 only)
PROGRAMMING PINS
VID 25mV
VID 0
VID 1
VID 2
VID 3
REMOTE SENSE
VID
Common
11
5
4
3
2
1
31
Lin
VOUT
12–16
23–30
PT8104
VIN
1µH
L
O
A
D
+
+
6
17–22
CIN
COUT
GND
GND
STBY*
Cin = Required 1500µF electrolytic
Cout = Required 660µF low ESR OS-Con®, or
1,200µF aluminum electrolytic
Lin = Optional 1µH input choke
3
For technical support and more information, see inside back cover or visit www.ti.com
PT8100 Series
40-A 3.3/5-V Input Programmable
Integrated Switching Regulator
PT8101 /2 Specifications (Unless otherwise stated Ta =25°C, C1 =1,500µF, C2 =660µF, Vin =5V, & Io =40A )
PT8101/2, Vin =5V
Characteristics
Symbols
Conditions
Min
Typ
Max
Units
(1)
(1)
Output Current
Io
25°C, natural convection
60°C with 200LFM airflow
0.1
0.1
—
—
38
40
A
Input Voltage Range
Set-Point Voltage Tolerance
Line Regulation
Vin
Over Io Range
Over Vo range
Over Vin range
Over Io range
4.5
—
—
—
—
—
—
1
5.5
2
V
Vo tol
%V
mV
mV
%Vo
%V
∆Regline
∆Regload
∆Regtemp
∆Votot
5
—
—
—
3
Load Regulation
5
Temperature Variation
Total Output Voltage Variation
–40°C ≤Ta ≤85°C
0.5
Includes set-point, line load,
—
–40°C ≤Ta ≤ 85°C
Efficiency
η
Io =20A
Vo =2.5V
—
—
—
—
93
90
88
86
—
—
—
—
V
V
V
o =1.8V
o =1.5V
o =1.2V
%
%
Io =40A
Vo =2.5V
—
—
—
—
89
85
83
81
—
—
—
—
V
V
o =1.8V
o =1.5V
Vo =1.2V
Vo Ripple (pk-pk)
Vr
20MHz bandwidth
—
—
—
—
—
—
300
25
50
75
25
30
60
350
—
—
—
—
—
—
400
mV
µSec
mV
µSec
mV
A
Transient Response (Vo =1.8V)
ttr
1A/µs load step, 50% to 100% Iomax
Vo over/undershoot
∆Vtr
ttr
Transient Response (Vo =1.2V)
1A/µs load step, 50% to 100% Iomax
Vo over/undershoot
∆Vtr
Iosc
ƒo
Short Circuit Threshold
Switching Frequency
Over load range
kHz
Standby Control (pin 6)
Input High Voltage
Input Low Voltage
(2)
—
-0.2
—
—
Open
0.8
—
VIH
VIL
IIL
Referenced to GND (pins 17–22)
V
—
Input Low Current
Pin 6 to GND
0.5
mA
mA
µF
Standby Input Current
External Output Capacitance
External Input Capacitance
Operating Temperature Range
Storage Temperature
Iin standby
Pin 6 to GND
—
35
—
—
—
—
—
(5)
(3)
C2
C1
Ta
Ts
See application schematic
See application schematic
Over Vin Range
660
1,500
–40
-40
15,000
—
µF
+85 (4)
+125
°C
°C
—
Mechanical Shock
Per Mil-STD-883D, Method 2002.3
1 msec, Half Sine, mounted to a fixture
—
500
—
—
G’s
Mechanical Vibration
Mil-STD-883D, Method 2007.2
Vertical
Horizontal
—
—
20 (6)
G’s
(6)
20-2000 Hz, soldered in PCB
Vertical/Horizontal
20
Weight
—
—
—
55
—
grams
Flammability
Materials meet UL 94V-0
Notes: (1) ISR-will operate down to no load with reduced specifications.
(2) The Standby input (pin 6) has an internal pull-up. If it is left open-circuit the module will operate when input power is applied. A low-leakage
MOSFET is recommended to control this input. The open-circuit voltage is nominally 5V. See application notes for interface considerations.
(3) For operation below 0°C, Cout must have stable characteristics. Use either low ESR tantalum or Oscon® capacitors.
(4) See safe Operating Area curves or consult factory for the appropriate derating.
(5) The PT8100 regulators require a minimum of 660µF, low ESR ouput capacitance (1,200µF for standard aluminum electrolytic) for proper operation.
(6) The case pins on the through-hole package types (suffixes N & A) must be soldered. For more information see the applicable package outline drawing.
Input Filter: The filter components L1, and C3 are optional for most applications. The inductor must be rated to handle the projected input current. A rating of 30ADC
is recommended. The capacitance C1 must be rated for a minimum of 1Arms of ripple current. For transient or dynamic load applications, additional capacitance may
be required. For more information refer to the application note on capacitor recommendations for this product.
4
For technical support and more information, see inside back cover or visit www.ti.com
PT8100 Series
40-A 3.3/5-V Input Programmable
Integrated Switching Regulator
PT8103/5 Specifications (Unless otherwise stated Ta =25°C, C1 =1,500µF, C2 =660µF, Vin =3.3V, & Io = 40A )
PT8103/5, Vin =3.3V
Characteristics
Symbols
Conditions
Min
Typ
Max
Units
(1)
(1)
Output Current
Io
25°C, natural convection
60°C with 200LFM airflow
0.1
0.1
—
—
39
40
A
Input Voltage Range
Set-Point Voltage Tolerance
Line Regulation
Vin
Over Io Range
Over Vo range
Over Vin range
Over Io range
3.1
—
—
—
—
—
—
1
3.6
2
V
Vo tol
%V
mV
mV
%Vo
%V
∆Regline
∆Regload
∆Regtemp
∆Votot
5
—
—
—
3
Load Regulation
5
Temperature Variation
Total Output Voltage Variation
–40°C ≤Ta ≤85°C
0.5
Includes set-point, line, load,
—
–40°C ≤Ta ≤ 85°C
Efficiency
η
Io =20
V
V
V
V
o =1.8V
o =1.5V
o =1.2V
o =0.8V
—
—
—
—
90
89
87
84
—
—
—
—
%
%
I
o =40
Vo =1.8V
o =1.5V
—
—
—
—
86
84
82
78
—
—
—
—
V
Vo =1.2V
V
o =0.8V
Vo Ripple (pk-pk)
Vr
20MHz bandwidth
—
25
25
—
mV
µSec
mV
A
Transient Response (Vo =1.2V)
ttr
1A/µs load step, 50% to 100% Iomax
Vo over/undershoot
—
—
∆Vtr
Iosc
ƒo
—
30
—
Short Circuit Threshold
Switching Frequency
—
60
—
Over load range
300
350
400
kHz
Standby Control (pin 6)
Input High Voltage
Input Low Voltage
—
-0.2
—
—
Open (2)
0.8
VIH
VIL
Referenced to GND (pins 17–22)
V
Input Low Current
IIL
Pin 6 to GND
—
0.5
35
—
—
—
—
—
mA
mA
µF
Standby Input Current
External Output Capacitance
External Input Capacitance
Operating Temperature Range
Storage Temperature
Iin standby
Pin 6 to GND
—
—
(5)
(3)
C2
C1
Ta
Ts
See application schematic
See application schematic
Over Vin Range
660
15,000
—
1,500
–40
µF
(4)
+85
°C
°C
—
-40
+125
Mechanical Shock
Per Mil-STD-883D, Method 2002.3
1 msec, Half Sine, mounted to a fixture
—
500
—
—
G’s
(6)
(6)
Mechanical Vibration
Mil-STD-883D, Method 2007.2
Vertical
—
—
20
20
G’s
20-2000 Hz, soldered in PCB
Vertical/Horizontal
Horizontal
Weight
—
—
—
55
—
grams
Flammability
Materials meet UL 94V-0
Notes: (1) ISR-will operate down to no load with reduced specifications.
(2) The Standby input (pin 6) has an internal pull-up. If it is left open-circuit the module will operate when input power is applied. A low-leakage
MOSFET is recommended to control this input. The open-circuit voltage is nominally 5V. See application notes for interface considerations.
(3) For operation below 0°C, Cout must have stable characteristics. Use either low ESR tantalum or Oscon® capacitors.
(4) See safe Operating Area curves or consult factory for the appropriate derating.
(5) The PT8100 regulators require a minimum of 660µF, low ESR ouput capacitance (1,200µF for standard aluminum electrolytic) for proper operation.
(6) The case pins on the through-hole package types (suffixes N & A) must be soldered. For more information see the applicable package outline drawing.
Input Filter: The filter components L1 and C3 are optional for most applications. The inductor must be rated to handle the projected input current. A rating of 30ADC is
recommended. The input capacitance, C1 must be rated for a minimum of 1Arms of ripple current. For transient or dynamic load applications, additional capacitance
may be required. For more information refer to the application note on capacitor recommendations for this product.
5
For technical support and more information, see inside back cover or visit www.ti.com
PT8100 Series
40-A 3.3/5-V Input Programmable
Integrated Switching Regulator
PT8104 Specifications (Unless otherwise stated Ta =25°C, C1 =1,500µF, C2 =660µF, Vin =5V, Vo =1.8V, & Io =40A )
PT8104, Vin =5V
Characteristics
Symbols
Conditions
Min
Typ
Max
Units
(1)
(1)
Output Current
Io
25°C, natural convection
60°C with 200LFM airflow
0.1
0.1
—
—
38
40
A
Input Voltage Range
Vin
Over Io Range
Over Vo range
Over Vin range
Over Io range
4.5
—
—
—
—
—
1
5.5
2
V
Set-Point Voltage Tolerance
Line Regulation
Vo tol
%V
mV
∆Regline
∆Regload
∆Regtemp
∆Votot
10
1.5
0.5
—
—
—
Load Regulation (Droop)
Temperature Variation
Total Output Voltage Variation
mV/A
%Vo
–40°C ≤Ta ≤85°C
Includes set-point, line, load,
—
—
75 (2)
mV
–40°C ≤Ta ≤ 85°C, pin 31 to GND
Efficiency
η
Io =15A
V
V
V
o =1.8V
o =1.5V
o =1.2V
—
—
—
90
88
87
—
—
—
%
I
o =40A
Vo =1.8V
o =1.5V
Vo =1.2V
—
—
—
85
82
80
—
—
—
V
%
Vo Ripple (pk-pk)
Vr
20MHz bandwidth
—
25
50
—
mV
µSec
mV
A
Transient Response (Vo =1.2V)
ttr
1A/µs load step, 50% to 100% Iomax
Vo over/undershoot
—
—
∆Vtr
Iosc
ƒo
—
50
—
Short Circuit Threshold
Switching Frequency
—
58
—
Over load range
300
350
400
kHz
Standby Control (pin 6)
Input High Voltage
Input Low Voltage
(3)
—
–0.2
—
—
Open
0.8
—
VIH
VIL
IIL
Referenced to GND (pins 17–22)
V
—
Input Low Current
Pin 6 to GND
0.5
mA
mA
µF
Standby Input Current
External Output Capacitance
External Input Capacitance
Operating Temperature Range
Storage Temperature
Iin standby
Pin 6 to GND
—
35
—
—
—
—
—
(6)
(4)
C2
C1
Ta
Ts
See PT8104 application schematic
See PT8104 application schematic
Over Vin Range
660
1,500
–40
–40
15,000
—
µF
(5)
+85
°C
°C
—
+125
Mechanical Shock
Per Mil-STD-883D, Method 2002.3
1 msec, Half Sine, mounted to a fixture
—
500
—
—
G’s
(7)
(7)
Mechanical Vibration
Mil-STD-883D, Method 2007.2
Vertical
Horizontal
—
—
20
20
G’s
20-2000 Hz, soldered in PCB
Vertical/Horizontal
Weight
—
—
—
55
—
grams
Flammability
Materials meet UL 94V-0
Notes: (1) ISR-will operate down to no load with reduced specifications.
(2) Total output voltage variation includes load regulation droop, which is required for compliance with specification VRM 8.4-5
(3) The Standby input (pin 6) has an internal pull-up. If it is left open-circuit the module will operate when input power is applied. A low-leakage
MOSFET is recommended to control this input. The open-circuit voltage is nominally 5V. See application notes for interface considerations.
(4) For operation below 0°C, Cout must have stable characteristics. Use either low ESR tantalum or Oscon® capacitors.
(5) See safe Operating Area curves or consult factory for the appropriate derating.
(6) The PT8100 regulators require a minimum of 660µF, low ESR ouput capacitance (1,200µF for standard aluminum electrolytic) for proper operation.
(7) The case pins on the through-hole package types (suffixes N & A) must be soldered. For more information see the applicable package outline drawing.
Input Filter: The filter components L1 and C3 are optional for most applications. The inductor must be rated to handle the projected input current. A rating of 20ADC is
recommended. The input capacitance, C1 must be rated for a minimum of 1Arms of ripple current. For transient or dynamic load applications, additional capacitance
may be required. For more information refer to the application note on capacitor recommendations for this product.
6
For technical support and more information, see inside back cover or visit www.ti.com
Typical Characteristics
PT8100 Series
40-A 3.3/5-V Input Programmable
Integrated Switching Regulator
Characteristic Data; Vin =5V, PT8101/2/4 (See Note A)
Safe Operating Area; Vin =5V (See Note B)
PT8101, Vo =2.5V
Efficiency vs Output Current
90
80
70
60
50
40
30
20
100
90
Airflow
VOUT
80
70
60
50
400LFM
200LFM
60LFM
2.5V
1.8V
1.5V
1.2V
Nat conv
0
8
16
24
32
40
0
8
16
24
32
40
Iout (A)
Iout (A)
Output Ripple vs Output Current
PT8102/PT8104, Vo =1.8V
50
40
30
20
10
0
90
80
70
60
50
40
30
20
VOUT
Airflow
1.5V
400LFM
200LFM
60LFM
1.8V
2.5V
1.2V
Nat conv
0
8
16
24
32
40
0
8
16
24
32
40
Iout (A)
Iout (A)
Power Dissipation vs Output Current
15
12
9
VOUT
2.5V
1.8V
1.5V
1.2V
6
3
0
0
8
16
24
32
40
Iout (A)
Note A: Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the Converter.
Note B: SOA curves represent the conditions at which internal components are at or below the manufacturer’s maximum operating temperatures
7
For technical support and more information, see inside back cover or visit www.ti.com
Typical Characteristics
PT8100 Series
40-A 3.3/5-V Input Programmable
Integrated Switching Regulator
Characteristic Data; Vin =3.3V, PT8103/5 (See Note A)
Safe Operating Area; Vin =3.3V (See Note B)
Efficiency vs Output Current
PT8103, Vo =1.8V
100
90
80
90
Airflow
400LFM
VOUT
70
80
70
60
50
1.8V
1.5V
1.2V
0.8V
60
200LFM
60LFM
50
Nat conv
40
30
20
0
8
16
24
32
40
0
8
16
24
24
24
32
32
32
40
40
40
Iout (A)
Iout (A)
Output Ripple vs Output Current
PT8105, Vo =1.5V
50
40
30
20
10
0
90
80
70
60
50
40
30
20
Airflow
VOUT
0.8V
1.2V
1.8V
1.5V
400LFM
200LFM
60LFM
Nat conv
0
8
16
24
32
40
0
8
16
Iout (A)
Iout (A)
Power Dissipation vs Output Current
PT8105, Vo =0.8V
15
12
9
90
80
70
60
50
40
30
20
Airflow
VOUT
1.8V
1.5V
1.2V
0.8V
400LFM
200LFM
60LFM
6
Nat conv
3
0
0
8
16
24
32
40
0
8
16
Iout (A)
Iout (A)
Note A: Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the Converter.
Note B: SOA curves represent the conditions at which internal components are at or below the manufacturer’s maximum operating temperatures
8
For technical support and more information, see inside back cover or visit www.ti.com
Application Notes
PT8100
Tantalum Characteristics
Capacitor Recommendations for the Non-Isolated
40-A Excalibur™ Series of Regulators
Tantalum capacitors with a minimum 10V rating are
recommended on the output bus, but only the AVX TPS,
Sprague 594/595, or Kemet T495/T510 product series.
The AVX TPS, Sprague, or Kemet series capacitors are
specified over other types due to their higher surge current,
excellent power dissipation, and ripple current ratings.
As a caution, the TAJ Series by AVX is not recommended.
This series exhibits considerably higher ESR, reduced
power dissipation and lower ripple current capability.
The TAJ series is also less reliable compared to the TPS
series when determining power dissipation capability.
Input Capacitors
The recommended input capacitance is determined by the
1.0 ampere minimum ripple current rating and 1500µF
minimum capacitance. Capacitors listed below must be
rated for a minimum of 2× the input voltage with +5V
operation. Ripple current and ≤100mΩ equivalent series
resistance (ESR) values are the major considerations along
with temperature when selecting the proper capacitor.
Output Capacitors
Capacitor Table
The minimum required output capacitance is either 660µF
Oscon/Tantalum or 1200µF Alunimun Electrolytic with
a maximum ESR less than or equal to 100mΩ. Failure
to observe this requirement may lead to regulator insta-
bility or oscillation. Electrolytic capacitors have poor
ripple performance at frequencies greater than 400kHz,
but excellent low frequency transient response. Above
the ripple frequency ceramic decoupling capacitors are
necessary to improve the transient response and reduce
any high frequency noise components apparent during
higher current excursions. Preferred low ESR type
capacitor part numbers are identified in Table 1 below.
Table 1 identifies the characteristics of capacitors from a
number of vendors with acceptable ESR and ripple current
(rms) ratings. The suggested minimum quantities per regu-
lator for both the input and output buses are identified.
This is not an extensive capacitor list. The table below is a
suggested selection guide for input and output capacitors. Other
capacitor vendors are available with comparable RMS ripple
current rating and ESR (Equivalent Series Resistance at 100kHz).
These critical parameters are necessary to insure both opti-
mum regulator performance and long capacitor life.
Table 1 Capacitors Characteristic Data
Capacitor Vendor
Series
Capacitor Characteristics
Quantity
Working
Voltage
Value(µF)
(ESR) Equivalent
Series Resistance
85°C Maximum
Ripple
Physical
Size(mm)
Input
Bus
Output
Bus
Vendor Number
Current(Irms)
Panasonic
16V
16V
1500
2200
0.060Ω
0.038Ω
1100mA
2000mA
12.5×13.5
1
1
1
1
EEVFK1C152Q
FC/FK (Surface Mount)
18x16.5
EEVFC1C222N
FC (Radial)
16V
1500
0.043Ω
1690mA
16x15
1
1
EEUFC1C152S
United Chemi-Con
LXZ (Radial)
16V
25V
1500
1800
0.038Ω
0.029Ω
1660mA
2200mA
12.5x20
16x20
1
1
1
1
LXZ16VB155M12X20LL
LXZ25VB182M16X20LL
FX
6.3V
10V
1000
680
0.013Ω
4935mA
10×10.5
10×10.5
1
2
1
1
6FX1000M (Vin =3.3V)
10FX680M (Os-con)
0.015Ω÷2 =0.007Ω
>7000mA
Nichicon
PL Series
10V
10V
1500
1800
0.050Ω
0.044Ω
1190mA
1420mA
16x15
16x15
1
1
1
1
UPM1A152MHH6
UPM1A182MHH6
UD Series
10V
1000
0.09Ω
670mAx2
10×10
2
2
UUD1A102MCR1GS
Os-con:
SS
10V
10V
10V
330
330
560
0.025Ω÷3 =0.008Ω
0.017Ω÷3 =0.006Ω
0.013Ω÷2 =0.065Ω
>7000mA
>7000mA
>7000mA
10×10.5
10.3×12.6
10×12.7
3
3
2
2
2
2
10SS330M
SVP (Surface Mount)
SVP (Surface Mount)
10SVP330M
10SVP560M
AVX Tanatalum
TPS Series
7.0 L
10V
10V
330
330
0.100Ω÷3 =0.034Ω
0.060Ω÷3 =0.020Ω
>3500mA
>3500mA
×5.97 W
×3.45 H
3
3
2
2
TPSV337M010R0100
TPSV337M010R0060
(Surface (Mount)
Vishay/Sprague Tantalum
595D/594D Series
(Surface Mount)
7.2 L
×6.0 W
×3.5 H
10V
10V
330
680
0.045Ω÷3 =0.015Ω
0.090Ω÷4 =0.023Ω
>4600mA
>2500mA
3
2
2
1
594D337X0010R2T
595D687X0010R2T
Kemet Tantalum
T510/T495 /T520
(Surface Mount)
7.3 L
×4.3 W
×4.0 H
10V
10V
330
220
0.035Ω÷3 =0.012Ω
0.070Ω÷5 =0.035Ω
>5000mA
>3000mA
3
5
1
2
T510X337M010AS
T495X227M010AS
Sanyo Poscap
7.2 L
×4.3 W
×3.1 H
TPB (Surface Mount)
10V
220
0.040Ω÷5 =0.008Ω
>3000mA
5
2
10TPB220M
9
For technical support and more information, see inside back cover or visit www.ti.com
Application Notes
PT8100 Series
Pin-Coded Output Voltage Programming of the
40-A Rated PT8100 Series Regulators
microprocessor this may not be possible. In this case
either connect pin 11 to pins 17–22, or the ground
plane close to the regulator. This will allow the
microprocessor to use the common ground as a VID
control reference.
The PT8100 series of Excalibur® ISRs incorporate a
pin-coded programmable output voltage. In each case
the desired output voltage must be selected from a preset
range defined by the regulator model. Programming is
achieved by selectively connecting the control inputs,
“VID0–VID4” (“VID 25mV–VID3” for PT8104), pins 1–5,
4. If active devices are used to ground the voltage control
pins, low-level open-drain MOSFETs should be used over
bipolar transistors. The inherent Vce(sat) in bipolar devices
introduces errors in the device’s internal voltage control
circuit. Discrete transistors such as the BSS138, 2N7002,
IRLML2402, are examples of appropriate devices.
1
to the “VID Common,” pin 11. The programming code
and pinout information for each model is provided in the
PT8100 specifications. Some of the program codes are
compatible with the “Voltage ID” codes defined by the
Intel® VRM specifications. Figure 1 shows the pin-strap
connections for selecting 1.5V output voltage from a
PT8101.
Active Voltage Programming:
Special precautions should be taken when making changes
to the voltage control progam code while the output is
active. It is recommended that the ISR be powered down
or placed in standby. Changes made to the program code
while Vout is active can induce high current transients
through the device. This is the result of the electrolytic
output capacitors being either charged or discharged to the
new output voltage set-point. The transient current can be
minimized by making only incremental changes to the
binary code, i.e. one LSB at a time. A minimum of 100µs
settling time between each program state is also recom-
mended. Making non-incremental changes to VID3 and
VID4 with the output enabled is discouraged. The tran-
sients induced may activate the module’s over-current
protection. When using active devices to program the
output voltage, their state should be asserted prior to
input power being applied. If this is not possible, pull
STBY* (pin 6) to GND during the application of power,
assert the program code, then release pin 6. The release
of pin 6 will then to allow the device to initiate a soft-
start power-up to the program voltage.
Notes:
1. The programming convention is as follows:-
Logic 0:
Logic 1:
Connect to pin 11 (VID Common).
Open circuit/open drain (See notes 2, & 4)
2. The output voltage range of the PT8101 is limited to
2.7V maximum. Above this voltage, the performance of
the module is not guaranteed. Although the module will
appear to function above this voltage, VID 4 (pin 5)
should not be used to set the output voltage higher than
2.7V.
3. Do not connect pull-up resistors to the voltage
programming pins.
4. To minimize output voltage error, use pin 11 (VID
Common) as the logic “0” reference. However if the
regulator is used to power a VRM compatible
Figure 1
VID0
VID1
VID2
VID3
VID4
VO SENSE
11
5
4
3
2
1
31
VID
Common
VID4 – VID0 Sense
Lin
VIN
VO =1.5V
12–16
23–30
VIN
VOUT
PT8101
1µH
+
+
STBY
6
GND
L
O
A
D
CIN
COUT
17–22
Q 1
B S S 1 3 8
1 =OFF
GND
GND
10
For technical support and more information, see inside back cover or visit www.ti.com
Application Notes
PT8100 Series
Using the On/Off Standby Function of the
PT8100 Series of Programmable ISRs
The PT8100 series of programmable ISRs incorporates
an On/Off Standby function. This feature may be used
to turn the regulated output of the module off while input
voltage is applied. This places the module in “standby”
mode. The standby control may be used for power-up
sequencing, or wherever there is a requirement to control
the module’s output status from another circuit.
2. In the standby mode the output of the regulator is tri-
state, and the output voltage falls at the rate that the
load circuit discharges the output filter capacitors.
3. When the ground signal to the Standby pin is
removed, the regulator output initiates a soft-start
cycle by first asserting a low impedance to ground. If
an external voltage is applied to the output bus, it will
sink current and possibly over-stress the part.
The Standby function is provided by the STBY* control,
pin 6. If pin 6 is left open-circuit the regulator operates
normally, providing a regulated output when a valid sup-
ply voltage is applied to Vin (pins 10-16) with respect to
Turn-On Time
Turning Q1 in Figure 1 off, removes the low-voltage
signal at pin 6. After approximately 4ms the regulator
output rises and reaches full regulation within 10ms.
Fig. 2 shows the typical waveforms of a PT8101 following
the prompt turn-off of Q1. The turn-off of Q1 corresponds
to the rise in Vstby. The output voltage was set to 1.8V,
and the waveforms were measured with a 5V input source,
and 9.25A resistive load.
1
GND (pins 17-22). Connecting pin 6 to ground places
2
the regulator in standby mode , and reduces the input
current to typically 20mA. Applying a ground signal to
pin 6 prior to power-up, will inhibit the output during
the period that input power is applied. When the ground
signal to pin 6 is removed, the regulator initiates a soft-
3
start to re-establish the set output voltage. To ensure
that the regulator output is properly enabled, the STBY*
control pin must be open circuit.
Table 1 Standby Control Requirements 2
Figure 2
Parameter
VIH
Min
—
Typ
Max
Open Cct.
0.8V
1
VIL
–0.2V
—
ISTBY
–0.5mA
Vo (1V/Div)
Iin (2A/Div)
Notes:
1. The standby on a PT8100 series regulators must be
controlled with an open-collector (or open-drain)
transistor (See fig. 1). Do Not use a pull-up resistor.
Table 1 gives the STBY* pin parameters. The control
pin has an open-circuit voltage equal to Vin. To shut the
regulator output off, the control pin must be “pulled” to
less than 0.8Vdc with a low-impedance sink to ground.
Vstby (5V/Div)
HORIZ SCALE: 1ms/Div
Figure 1
VO SENSE
11
5
4
3
2
1
31
VID
Common
VID4 – VID0
Sense
Lin
VIN
VO =1.8V
12–16
23–30
VIN
VOUT
PT8101
1µH
STBY
6
GND
17–22
L
O
A
D
+
+
CIN
COUT
Q1
BSS138
1 =Off
GND
GND
11
For technical support and more information, see inside back cover or visit www.ti.com
PACKAGE OPTION ADDENDUM
www.ti.com
13-May-2005
PACKAGING INFORMATION
Orderable Device
PT8101A
PT8101C
PT8101N
PT8102A
PT8102C
PT8102N
PT8103A
PT8103C
PT8103N
PT8104A
PT8104C
PT8105A
PT8105C
PT8105N
Status (1)
NRND
NRND
NRND
NRND
NRND
NRND
NRND
ACTIVE
ACTIVE
NRND
NRND
NRND
NRND
NRND
Package Package
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
Qty
Type
Drawing
SIP MOD
ULE
EKF
31
31
31
31
31
31
31
31
31
31
31
31
31
31
6
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
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Level-1-215C-UNLIM
Level-3-215C-168HRS
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SIP MOD
ULE
EKG
EKH
EKF
EKG
EKH
EKF
EKG
EKH
EKF
EKG
EKF
EKG
EKH
6
SIP MOD
ULE
SIP MOD
ULE
6
6
Level-1-215C-UNLIM
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ULE
SIP MOD
ULE
Level-1-215C-UNLIM
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ULE
SIP MOD
ULE
6
6
Level-3-215C-168HRS
Level-1-215C-UNLIM
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ULE
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6
Level-1-215C-UNLIM
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ULE
SIP MOD
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(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan
-
The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS
&
no Sb/Br)
-
please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
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Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
13-May-2005
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Addendum-Page 2
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