Overvoltage Protection

Option for Series A1110

In many setups, there is a risk that voltages from other components will affect the power amplifier. The overvoltage protection (OVP) option protects the amplifier output from external overvoltages.

Function#

To prevent damage to an amplifier, no voltages greater than the positive or negative supply voltage may be applied to the amplifier output. However, in some applications, the peripherals connected to the amplifier cannot always reliably ensure this requirement. This option therefore monitors the voltage at the amplifier output to prevent excessive voltages from the peripherals.

If a dangerous voltage value occurs at the amplifier output, the option internally short-circuits the output via two silicon diode paths. The voltage then drops to approx. 1.5...2 V. The short-term current peak may reach 2,000 A for a period of 10 ms (with any polarity). At the same time, the amplifier is switched off.

Features#

Protects the amplifier and short-circuits the output when overvoltage is detected
Galvanically isolated signal output that indicates when protection has been triggered and that switches off connected peripherals
Configuration and status query via software (via graphical user interface and set of commands)

Applications#

High-voltage battery tests
Tests with inductive loads
HV on-board power supply emulator
Automotive standards: including LV123, ISO 21498-2, VW80300

Documents & Downloads#

PDF-Download

Option Overvoltage Protection (OVP)#

For all models in the A1110 series

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Go to Series A1110