Integrations TOP232-234 TOPSwitch-FX Family Datasheet

About this manual

The document describes the TOPSwitch-FX family, a series of integrated offline switcher ICs designed to reduce system cost while improving design flexibility and performance. Key features include an integrated high-voltage power MOSFET, PWM control, fault protection, and two added terminals: a MULTI-FUNCTION (M) pin for programmable line OV/UV shutdown or current limit setting, and a FREQUENCY (F) pin available in the Y package for half-frequency operation.

What's inside

• Product Highlights
• Pin Functional Description
• Output Power Table
• Functional Block Diagram
• Application Examples
• Key Application Considerations
• Package Outlines

Frequently asked questions

What is the maximum output power for the TOP234Y in an open frame design?

The device supports a maximum practical continuous power of 75 W in an open frame design with adequate heat sinking.

How does the switching frequency change if the FREQUENCY pin is connected to the CONTROL pin?

Connecting the FREQUENCY pin to the CONTROL pin reduces the switching frequency from 132 kHz to 66 kHz.