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:







5.1

–1







k

Ω

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:

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