Voltage Regulator Module (VRM) and Enterprise Voltage Regulator-Down (EVRD) 10.2 Design Guidelines

Voltage Regulator Module (VRM) and Enterprise Voltage 25
Regulator-Down (EVRD) 10.2 Design Guidelines
5 Processor Voltage Output
Protection
These are features built into the VRM/EVRD to prevent damage to itself, the processor, or other
system components.
5.1 Over-Voltage Protection (OVP) - PROPOSED
The OVP circuit monitors the processor core voltage (Vcc) for an over-voltage condition. If the
output is more than 200 mV above the VID level, the VRM/EVRD shuts off the output.
5.2 Over-Current Protection (OCP) - PROPOSED
The core VRM/EVRD should be capable of withstanding a continuous, abnormally low resistance
on the output without damage or over-stress to the unit. Output current under this condition will be
limited to no more than 120% of the maximum peak rated output of the voltage regulator.
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