- 您现在的位置：买卖IC网 > PDF目录98066 > PTV03020WAH (TEXAS INSTRUMENTS INC) 1-OUTPUT DC-DC REG PWR SUPPLY MODULE PDF资料下载
参数资料
| 型号： | PTV03020WAH |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封装： | SIP-12 |
| 文件页数： | 3/19页 |
| 文件大小： | 434K |
| 代理商： | PTV03020WAH |
www.ti.com
Output On/Off Inhibit
VI
L
O
A
D
1=Inhibit
GND
VO
V Sense
O
Q1
BSS138
RSET
5.49kW
C1
C3
C2
PTV03020W
VI
VO
GND
Inhibit
V Adj
O
Track
Sense
SLTS243A – FEBRUARY 2005 – REVISED OCTOBER 2007
From the moment a valid input voltage is applied, the soft-start control introduces a short time delay (typically
less than 5 ms) before allowing the output voltage to rise. The output then progressively rises to the module
set-point voltage. Figure 8 shows the soft-start power-up characteristic of the PTV03020W, operating from a
3.3-V input bus and configured for a 1.8-V output. The waveforms were measured with a 5-A resistive load and
the Auto-Track feature disabled. The initial rise in input current when the input voltage first starts to rise is the
charge current drawn by the input capacitors. Power up is complete within 25 ms.
For applications requiring output voltage on/off control, the modules incorporate 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 input is left open-circuit, providing a regulated output
whenever a valid source voltage is connected to VI with respect to GND.
Figure 9 shows the typical application of the inhibit function. Note the discrete transistor (Q1). The Inhibit input
has its own internal pullup (see footnotes to electrical characteristics table). The input is not compatible with TTL
logic devices. An open-collector (or open-drain) discrete transistor is recommended for control.
Figure 9. On/Off Inhibit Application Circuit
Turning Q1 on applies a low voltage to the Inhibit control 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
25ms. Figure 10 shows the typical rise in both the output voltage and input current, following the turnoff of Q1.
The turnoff of Q1 corresponds to the rise in the waveform, Q1 VDS. The waveforms were measured with a 9-A
constant current load.
Copyright 2005–2007, Texas Instruments Incorporated
11
Product Folder Link(s) :PTV03020W
相关PDF资料 |
PDF描述 |
|---|---|
| PTV05010WAH | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PTV08T250WAH | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PTV08T250WAD | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PTV12010WAD | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PTV12010WAH | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PTV05010 | 制造商:ARTESYN 制造商全称:Artesyn Technologies 功能描述:DC-DC CONVERTERS POLA Non-isolated |
| PTV05010W | 制造商:TI 制造商全称:Texas Instruments 功能描述:8-A, 5-V INPUT NONISOLATED WIDE-OUTPUT ADJUST SIP MODULE |
| PTV05010WAD | 功能描述:DC/DC转换器 28.8W 0.8-3.6V 8A RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| PTV05010WAH | 功能描述:DC/DC转换器 8A 5V-In Wide-Out Adj SIP Module RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| PTV05020 | 制造商:EMERSON-NETWORKPOWER 制造商全称:Emerson Network Power 功能描述:DC-DC CONVERTERS |
发布紧急采购，3分钟左右您将得到回复。