FSFR1800HSL データシートの表示（PDF） - Unspecified

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FSFR1800HSL

FSFR-HS Series — Advanced Fairchild Power Switch (FPS™) for Half-Bridge Resonant Converters

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Pin Configuration

Figure 3. Package Diagram

Pin Definitions

Pin #

1

2

Name

DL

LS

3

RT

4

CS

5

SG

6

PG

7

LVCC

8

NC

9

HVCC

10

CTR

Description

This is the drain of the high-side MOSFET, typically connected to the input DC link voltage.

This is the line-sensing pin for the input voltage Under-Voltage Lockout (UVLO).

This pin is used for controlling the switching frequency in normal operation. When any

protections are triggered, the internal Auto/Restart (A/R) circuit starts to sense the voltage on

the pin, which is discharged naturally by external resistance. The IC can be operated with

A/R when the voltage decreases 0.1 V. Typically, an opto-coupler is connected to control the

switching frequency for the output voltage regulation and resistors for setting minimum /

maximum operating frequency.

This pin senses the current flowing through the low-side MOSFET. Typically, negative

voltage is applied to this pin.

This pin is the ground of the control part.

This pin is the power ground. This pin is connected to the source of the low-side MOSFET.

This pin is the supply voltage of the control IC.

No connection

This is the supply voltage of the high-side gate-drive circuit.

This is the drain of the low-side MOSFET. Typically, a transformer is connected to this pin.

© 2011 Fairchild Semiconductor Corporation

FSFR1800 / FSFR1700-HS • Rev.1.0.1

3

www.fairchildsemi.com

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