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PTH12030WAST 参数 Datasheet PDF下载

PTH12030WAST图片预览
型号: PTH12030WAST
PDF下载: 下载PDF文件 查看货源
内容描述: 26 -A , 12 -V输入非隔离宽输出调节电源模块 [26-A, 12-V INPUT NON-ISOLATED WIDE-OUTPUT ADJUST POWER MODULE]
分类和应用: 电源电路输出元件输入元件
文件页数/大小: 26 页 / 824 K
品牌: TI [ TEXAS INSTRUMENTS ]
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PTH12030W/L  
www.ti.com  
SLTS211FMAY 2003REVISED FEBRUARY 2007  
DEVICE INFORMATION  
TERMINAL FUNCTIONS  
TERMINAL  
DESCRIPTION  
NAME  
NO.  
This is the common ground connection for the VI and VO power connections. It is also the 0 Vdc  
reference for the control inputs.  
GND  
VI  
1,3,7,10  
2
The positive input voltage power node to the module, which is referenced to common GND.  
The Inhibit pin is an open-collector/drain negative logic input that is referenced to GND. Applying a  
low-level ground signal to this input disables the module’s output and turns off the output voltage.  
When the Inhibit control is active, the input current drawn by the regulator is significantly reduced. If  
the Inhibit pin is left open-circuit, the module produces an output whenever a valid input source is  
applied.  
Inhibit(1)  
4
A 1% resistor must be directly connected between this pin and pin 7 (GND) to set the output voltage to  
a value higher than 0.8 V. The temperature stability of the resistor should be 100 ppm/°C (or better).  
The set point range for the output voltage is from 1.2 V to 5.5 V for W-suffix devices, and 0.8 V to 1.8  
V for L-suffix devices. The resistor value required for a given output voltage may be calculated using a  
formula. If left open circuit, the module output voltage defaults to its lowest value. For further  
information on output voltage adjustment, see the related application information section. Table 3 gives  
the preferred resistor values for a number of standard output voltages.  
VO Adjust  
5
The sense input allows the regulation circuit to compensate for voltage drop between the module and  
the load. For optimal voltage accuracy, VO Sense should be connected to Vout. It can also be left  
disconnected.  
VO Sense  
VO  
6
8,9  
The regulated positive power output with respect to the GND node.  
This is an analog control input that enables the output voltage to follow an external voltage. This pin  
becomes active typically 20 ms after the input voltage has been applied, and allows direct control of  
the output voltage from 0 V up to the nominal set-point voltage. Within this range the output will follow  
the voltage at the Track pin on a volt-for-volt basis. When the control voltage is raised above this  
range, the module regulates at its set-point voltage. The feature allows the output voltage to rise  
simultaneously with other modules powered from the same input bus. If unused, this input should be  
connected to VI. Note: Due to the undervoltage lockout feature, the output of the module cannot follow  
its own input voltage during power up. For more information, see the related application information  
section.  
Track  
11  
When this input is asserted to GND, the output voltage is decreased by 5% from the nominal. The  
input requires an open-collector (open-drain) interface. It is not TTL compatible. A lower percent  
change can be accomodated with a series resistor. For further information, see the related application  
information section.  
Margin Down(1)  
Margin Up(1)  
12  
13  
When this input is asserted to GND, the output voltage is increased by 5%. The input requires an  
open-collector (open-drain) interface. It is not TTL compatible. The percent change can be reduced  
with a series resistor. For further information, see the related application information section.  
(1) Denotes negative logic:  
Open = Normal operation  
Ground = Function active  
13 12 11  
1
2
3
10  
9
8
PTHXX030  
(Top View)  
7
4
5
6
5
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