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GS-R412 Scheda tecnica(PDF) 4 Page - STMicroelectronics |
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GS-R412 Scheda tecnica(HTML) 4 Page - STMicroelectronics |
4 / 5 page 4/5 is a limitation, a 22 µF ceramic multilayer capacitor must be connected to the module input pins. Output Voltage Programming The GS-R400V and GS-R400VB output voltage is programmed by using a resistor (see pin function table and fig. 4). The resistor must be located very close the module and the PCB layout must mimimize injected noise. The value of the resistor is calculated by using the following formula: Rv = 2.67 Vo 5.1 –1 k Ω Vo can be adjusted between 5.1 and 40V. Current Limiting Programming The GS-R400VB current limiting is programmed by using a resistor (see pin function table and fig. 4). The value of the resistor is calculated by using the following formula: Ri = [2.2 + (5 •Io)] kΩ Module Protection The modules are protected against occasional and permanent short circuits of the output pin to ground, as well as against output current overload. When the output current exceeds the maximum value, the output is automatically disabled. After a fixed time the module starts again in a soft mode. The cycle is repeated until the overload condition is removed. A crowbar output overvoltage protection is activated whenever the output voltage exceeds the nominal output voltage by more than 25%. Figure 1. Load Connection Figure 2. Remote Inhibit Operation Figure 3. Reset Operation GS-R400 FAMILY |
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