Some English abbreviations in switching power supplies

OCP over current protection overcurrent protection

OLP over load protection overload protection

OVP over voltage protection overvoltage protection

OTP over temperature protection overtemperature protection

ESD Eletro-static Discharge Electrostatic discharge

UVLO under voltage lock out undervoltage lockout

PFC power factor correcion power factor correction

The burst mode skip cycle pattern typically starts several cycles under no load, and then turns off several cycles to reduce idle standby power consumption.

Hiccup mode hiccup, repetitive restart in abnormal state

Hiccup-mode is a method of operation in a power supply whose purpose are to protect the power supply from being damaged dur ing an over-current fault condition. It also enables the power supply to restart when the fault was removed.

Source current pull current output out-of-circuit load

Sink current sink current from external circuit to output load

quiescent current quiescent

RCD residual current devices residual currents action Protector

Resistor between MOSFET gate and source electrode

First, to provide bias voltage for the FET; second, play the role of the discharge resistance--protect the gate G-source s; The first function is good understanding, here explains the principle of the second function-protection gate G-source S: The resistance value of the G-s pole of the FET is very large, So as long as there is a small amount of static electricity can make his g-s pole of the equivalent capacitance at both ends of the high voltage, if not in time to put these small amount of electrostatic diarrhea, his high pressure at both ends may cause the field effect tube to produce misoperation, or even may penetrate its g-s pole, then the grid and the resistance between the source can be put off , which plays a role in protecting the field effect tube.

The high insulation resistance between the MoS gate and the drain and the source, the insulating layer is very thin, the gate is easy to accumulate charge to breakdown the insulating layer and damage the MoS tube, in the course of use if there is a higher voltage to the gate to penetrate the insulating layer and damage to the MoS tube, Therefore, in the MOS tube gate shunt regulator to limit the gate voltage under the voltage regulator value, to protect the MoS tube gate is not penetrated. The resistance of the MoS gate in parallel is to release the gate charge and not allow the charge to accumulate. In short, the MoS tube gate in parallel with the resistor regulator to protect the MoS gate function.

Some English abbreviations in switching power supplies