MP110 datasheet(6/23 Pages) MPS

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MP110 – 900V OFFLINE SWITCHING REGULATOR

PIN FUNCTIONS

Pin #

Name

Description

Feedback. The output voltage from the external compensation circuit is fed into this pin.

This pin and the current sense signal from Source determines the PWM duty cycle. A

feedback voltage of VOLP triggers over-load protection, while VBURL triggers burst-mode

operation. The regulator exits burst-mode operation and enters normal operation when

the FB voltage reaches VBURH.

PRO

Protection. Pull-up PRO to shut down the IC with hysteresis.

FSET

Switching converter frequency set. Connect a resistor to GND to set the switching

frequency up to 300kHz.

VCC

Supply voltage. Connect a 22

μF bulk capacitor and a 0.1uF ceramic capacitor for most

applications. When VCC rises to VCCH, the IC starts switching; when it falls below VCCL, the

IC stops switching.

Drain

Drain of the internal MOSFET. Input for the start-up high voltage current source.

Source

Source of the internal MOSFET. Input of the primary current sense signal.

GND

The IC Ground.

MP110 Rev. 1.01

www.MonolithicPower.com

6/4/2014

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MP110 Datasheet(PDF) 6 Page - Monolithic Power Systems