NCL30488

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Figure 1. Typical Application Schematic for NCL30488

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NCL30488

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PIN FUNCTION DESCRIPTION NCL30488

Pin N5

Pin Name

Function

Pin Description

1

COMP

OTA output for CV loop

This pin receives a compensation network (capacitors and resistors) to stabilize the

CV loop

2

ZCD

Zero crossing Detection

This pin connects to the auxiliary winding and is used to detect the core reset event.

This pin also senses the auxiliary winding voltage for accurate output voltage control.

3

CS

Current sense

This pin monitors the primary peak current.

4

GND

−

The controller ground

5

DRV

Driver output

The driver’s output to an external MOSFET

6

VCC

Supplies the controller

This pin is connected to an external auxiliary voltage.

7

NC

creepage

8

HV

High Voltage sensing

This pin connects after the diode bridge to provide the startup current and internal

high voltage sensing function.