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参数资料
| 型号： | PT8103C |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 39 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, MSMA31 |
| 封装： | METAL, SMD-31 |
| 文件页数： | 2/14页 |
| 文件大小： | 241K |
| 代理商： | PT8103C |
Application Notes
For technical support and more information, see inside back cover or visit www.ti.com
10
Pin-Coded Output Voltage Programming of the
40-A Rated PT8100 Series Regulators
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,
to the “VID Common,” pin 11. 1 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.
Notes:
1. The programming convention is as follows:-
Logic 0:
Connect to pin 11 (VID Common).
Logic 1:
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
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.
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.
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 100s
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.
PT8100 Series
L
O
A
D
C
OUT
+
C
IN
+
V
IN
V
O =1.5V
GND
V
O SENSE
L
in
1H
GND
VID0
VID1
VID2
VID3
VID4
PT8101
4321
31
23–30
617–22
12–16
5
11
VID4 – VID0
Sense
V
IN
V
OUT
STBY
GND
VID
Common
Q1
BSS138
1 =OFF
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| PT8102C | 38 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, MSMA31 |
| PT8103A | 39 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, MSMA31 |
| PT8101N | 38 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, MSMA31 |
| PT8104C | 38 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, MSMA31 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PT8103N | 功能描述:开关变换器、稳压器与控制器 1.075-1.85V 40A 3.3V Inp Multiph Prog ISR RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| PT8104 | 制造商:TI 制造商全称:Texas Instruments 功能描述:40-A 3.3/5-V Input Programmable Integrated Switching Regulator |
| PT8104A | 功能描述:REGULATOR 5VIN 40A HORZ RoHS:否 类别:电源 - 板载 >> DC DC Converters 系列:PT8100 设计资源:Maxi/Mini/Micro Design Guide, Appl Manual 标准包装:1 系列:Maxi 类型:隔离 输出数:1 电压 - 输入（最小）:43V 电压 - 输入（最大）:110V Voltage - Output 1:15V Voltage - Output 2:- Voltage - Output 3:- 电流 - 输出（最大）:* 电源（瓦） - 制造商系列:400W 电压 - 隔离:* 特点:* 安装类型:通孔 封装/外壳:模块 尺寸/尺寸:4.60" L x 2.20" W x 0.54" H（116.8mm x 55.9mm x 13.7mm） 包装:散装 工作温度:-55°C ~ 100°C 效率:* 电源（瓦特）- 最大:* |
| PT8104C | 制造商:TI 制造商全称:Texas Instruments 功能描述:40-A 3.3/5-V Input Programmable Integrated Switching Regulator |
| PT8104N | 制造商:TI 制造商全称:Texas Instruments 功能描述:40-A 3.3/5-V Input Programmable Integrated Switching Regulator |
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