St MicroElectronics PWM Controller 60kHz 730V SOIC-8

The St MicroElectronics PWM Controller is a 60kHz current mode controller for off-line switched-mode power supplies, integrating a high voltage power MOSFET on a single silicon chip.

Overview

This low power off-line switched-mode power supply primary switcher combines a dedicated current mode PWM controller with a high voltage power MOSFET on a single silicon chip. The design is intended to deliver efficient and compact power supply solutions for a variety of applications. The device operates at a fixed 60kHz switching frequency, supporting stable performance.

Key Features

• Fixed 60kHz switching frequency
• Wide 9V to 38V VDD input voltage range, accommodating changes in auxiliary supply voltage
• Current mode control
• Automatic burst mode in low load conditions to enhance efficiency
• Overvoltage protection in HICCUP mode
• Auxiliary under-voltage lockout with hysteresis
• High voltage start-up current source
• Over-temperature, overcurrent and overvoltage protection with auto-restart

Specifications

• Power switch voltage rating: 730V
• Power rating max: 5W
• Topology: Flyback
• Input voltage: 85 VAC to 265 VAC
• Package: SOIC-8 surface mount, 8 pins
• Operating temperature range: -40°C to 150°C

Applications and Handling

The controller is designed for off-line power supplies, including battery charger adapters, standby power supplies for TVs or monitors, and auxiliary supplies for motor control. The SOIC-8 surface mount package is suitable for automated assembly processes. ESD precautions are recommended during handling.