NCL30080 datasheet(2/21 Pages) ONSEMI

Part #	NCL30080

Description	Quasi-Resonant Primary Side Current-Mode Side Current-Mode

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Manufacturer	ONSEMI [ON Semiconductor]

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NCL30080

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2

Figure 1. Typical Application Schematic for NCL30080

Aux

1

2

34

5

6

.

Table 1. PIN FUNCTION DESCRIPTION

Pin No

Pin Name

Function

Pin Description

1

ZCD

Zero Crossing Detection

Connected to the auxiliary winding; this pin detects the core reset event.

2

GND

−

The controller ground

3

CS

Current sense

This pin monitors the primary peak current

4

DRV

Driver output

The current capability of the totem pole gate drive (+0.3/−0.5 A) makes it suit-

able to effectively drive a broad range of power MOSFETs.

5

VCC

Supplies the controller

This pin is connected to an external auxiliary voltage.

6

VIN

Input voltage sensing

Brown−Out

This pin observes the HV rail and is used in valley selection. This pin also

monitors and protects for low mains conditions.

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