FSES0765RG

3

Pin Definitions

Pin Configuration

Figure 3. Pin Configuration (Top View)

Pin Number

Pin Name

Pin Function Description

1

Drain

This pin is the high voltage power SenseFET drain connection.

2

GND

This pin is the control ground and the SenseFET source.

3Vcc

This pin is the positive supply input. This pin provides the internal operating

current for both start-up and steady-state operation.

4Vfb

This pin is internally connected to the inverting input of the PWM comparator.

The collector of an opto-coupler is typically tied to this pin. For stable

operation, a capacitor should be placed between this pin and GND. If the

voltage of this pin reaches 7.5V, the over load protection triggers resulting in

shutdown of the FPS.

5

Vsync

This pin is for synchronized switching. For proper synchronization, a pulse

signal should be applied on this pin. The internal MOSFET is turned on being

synchronized by the falling edge of this signal.

6Vstr

This pin is connected directly to the high voltage DC link. At startup, the

internal high voltage current source supplies the internal bias and charges the

external capacitor that is connected to the Vcc pin. Once Vcc reaches 12V, the

internal current source is disabled.

TO-220-6L

1. Drain

2. GND

3. Vcc

4. V

FB

6. Vstr

5. Vsync