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參數(shù)資料
| 型號(hào)： | PT7761 |
| 英文描述： | Intelligent Power Switch 1 Channel High Side Driver in a SO-8 Package |
| 中文描述： | 為1.3V至3.5V 40 - 5V的輸入可編程ISR的 |
| 文件頁(yè)數(shù)： | 7/8頁(yè) |
| 文件大小： | 165K |
| 代理商： | PT7761 |
Application Notes
For technical support and more information, see inside back cover or visit www.ti.com
Pin-Coded Output Voltage Adjustment of
PT7761
“
Excalibur
”
ISRs
The PT7761 Excalibur power module incorporates a
pin-coded output voltage control. These regulators in-
clude five control pins, identified VID0–VID4 (pins 1–5)
respectively. By selectively grounding VID0-VID4, the
output voltage of this regulator can be programmed in
incremental steps over the output voltage range, 1.3V to
3.5V. The program code and voltage range is designed to
be compatible with the “Voltage ID” specification defined
for popular microprocessors. Refer to Figure 1 for the
connection schematic, and the applicable data sheet for
the program code.
Notes:
1. The programming convention is as follows:-
Logic 0:
Connect to pin15 (Remote Sense Ground).
Logic 1:
Open circuit/open drain (See notes 2, & 4)
2. Do not connect pull-up resistors to the voltage
programming pins.
3. Use pin 15 (Rem Sense Gnd) as the logic “0” reference.
While the regular ground (pins 16–22) can also be used for
programming, doing so will degrade the load regulation of
the product. If the remote sense ground is not used,
pin 15 must be connected to pin 16 for optimum
output voltage accuracy.
Figure 1
4. If active devices are used to ground the voltage control
pins, low-level open drain MOSFET devices should be
used over bipolar transistors. The inherent V
ce
(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 unit is
powered. It is highly recommended that the ISR be either
powered down or held in standby. Changes made to the
program code while V
out
is enabled induces high current
transients through the device. This is the result of the
electrolytic output capacitors being either charged or dis-
charged 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 recommended. Making non-incremental
changes to VID3 and VID4 with the output enabled is
discouraged. If they are changed, the transients induced
can overstress the device. If the program code cannot be
asserted prior to power-up, pull pin 6 (STBY) to GND
during the period that the input voltage is applied. The
release of pin 6 will then to allow the device to initiate a
soft-start power-up to the program voltage.
PT7761
C
out
+
C
in
+
1
μ
H
(Optional)
+5V
COM
STBY
L
O
A
D
PT7761
4
3
2
1
31
23
–
30
15
6
16
–
22
9
–
14
5
7
Sync
GND
Sns (+)
Sns (
–
)
V
OUT
V
IN
Stby
VID0 - VID4
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PT7761-5V | 制造商:TI 制造商全稱:Texas Instruments 功能描述:40-A Programmable Integrated Switching Regulator Module |
| PT7761A | 功能描述:DC/DC轉(zhuǎn)換器 1.3V to 3.5V 40-A 5V Input Prog ISR RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
| PT7761C | 功能描述:REG 1.3-3.5V 40A 5VIN PROG SMD RoHS:否 類(lèi)別:電源 - 板載 >> DC DC Converters 系列:PT7760 設(shè)計(jì)資源:Maxi/Mini/Micro Design Guide, Appl Manual 標(biāo)準(zhǔn)包裝:1 系列:Maxi 類(lèi)型:隔離 輸出數(shù):1 電壓 - 輸入（最?。?43V 電壓 - 輸入（最大）:110V Voltage - Output 1:15V Voltage - Output 2:- Voltage - Output 3:- 電流 - 輸出（最大）:* 電源（瓦） - 制造商系列:400W 電壓 - 隔離:* 特點(diǎn):* 安裝類(lèi)型:通孔 封裝/外殼:模塊 尺寸/尺寸:4.60" L x 2.20" W x 0.54" H（116.8mm x 55.9mm x 13.7mm） 包裝:散裝 工作溫度:-55°C ~ 100°C 效率:* 電源（瓦特）- 最大:* |
| PT7761N | 功能描述:DC/DC轉(zhuǎn)換器 1.3V to 3.5V 40-A 5V Input Prog ISR RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
| PT7769 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:40A ＇Current Booster＇ for the PT7761 ISR |
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