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參數(shù)資料
| 型號： | PTH04T230WAST |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封裝： | DIP-10 |
| 文件頁數(shù)： | 17/36頁 |
| 文件大?。?/td> | 1160K |
| 代理商： | PTH04T230WAST |
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Output On/Off Inhibit
GND
PTH04T230/231W
2
3
+
GND
Inhibit/
UVLO
1 = Inhibit
Q1
BSS138
10
VI
CI
UDG06045
T Time 4 ms/div
VO
(1 V/div)
II
(2 A/div)
VINH
(2 V/div)
Overcurrent Protection
SLTS271C – SEPTEMBER 2006 – REVISED MARCH 2009 ............................................................................................................................................. www.ti.com
For applications requiring output voltage on/off control, the PTH04T230/231W incorporates an output Inhibit
control pin. The inhibit feature can be used wherever there is a requirement for the output voltage from the
regulator to be turned off.
The power modules function normally when the Inhibit pin is left open-circuit, providing a regulated output
whenever a valid source voltage is connected to VI with respect to GND.
Figure 21 shows the typical application of the inhibit function. Note the discrete transistor (Q1). The Inhibit input
has its own internal pull-up. An external pull-up should never be connected to the inhibit pin. The input is not
compatible with TTL logic devices. An open-collector (or open-drain) discrete transistor is recommended for
control.
Figure 21. On/Off Inhibit Control Circuit
Figure 22. Power-Up Response from Inhibit Control
Turning Q1 on applies a low voltage to the Inhibit control pin and disables the output of the module. If Q1 is then
turned off, the module executes a soft-start power-up sequence. A regulated output voltage is produced within 40
ms. Figure 22 shows the typical rise in both the output voltage and input current, following the turn-off of Q1. The
turn off of Q1 corresponds to the rise in the waveform, VINH. The waveforms were measured with a 3-A constant
current load.
For protection against load faults, all modules incorporate output overcurrent protection. Applying a load that
exceeds the regulator's overcurrent threshold causes the regulated output to shut down. Following shutdown, a
module periodically attempts to recover by initiating a soft-start power-up. This is described as a hiccup mode of
operation, whereby the module continues in a cycle of successive shutdown and power up until the load fault is
removed. During this period, the average current flowing into the fault is significantly reduced. Once the fault is
removed, the module automatically recovers and returns to normal operation.
24
Copyright 2006–2009, Texas Instruments Incorporated
Product Folder Link(s): PTH04T230W PTH04T231W
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PTH04T231WAD | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PTH04T230WAZT | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PTH04T231WAZT | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PTH04T230WAD | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PTH04T230WAS | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PTH04T230WAZ | 功能描述:DC/DC轉(zhuǎn)換器 6A 2.2-5.5V Input Non Isolated POL 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: |
| PTH04T230WAZT | 功能描述:DC/DC轉(zhuǎn)換器 6A 2.2-5.5V Input Non Isolated POL 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: |
| PTH04T231W | 制造商:TI 制造商全稱:Texas Instruments 功能描述:6-A, 2.2-V to 5.5-V INPUT, NON-ISOLATED, WIDE-OUTPUT, ADJUSTABLE POWER MODULE WITH TurboTrans |
| PTH04T231WAD | 功能描述:DC/DC轉(zhuǎn)換器 6A 2.2V-5.5Vin Non- Iso Adj Pwr Module 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: |
| PTH04T231WAS | 功能描述:DC/DC轉(zhuǎn)換器 6A 2.2V-5.5Vin Non- Iso Adj Pwr Module 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: |
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