Monolithic Power Systems HFC0310

Description

The HFC0310 is a flyback controller with fixedfrequency operation.The controller uses peak current mode to provide excellent transient response and ease loop compensation. When the output power falls below a given level, the controller enters burst mode to lower the stand-by powerconsumption.An external capacitor connected between the FSET pin and GND programs the HFC0310 switching frequency. Otherwise, the HFC0310 uses a frequency shaping function that greatly reduces the noise level, and reduces the cost of the EMI filter.The HFC0310 provides various protections, such as thermal shutdown, VCC under-voltage lockout, over-load protection, over-voltage protection, and short-circuit protection.The HFC0310 is available in a SOIC8 package.

Features

• Programmable switching frequency up to 600kHz
• Frequency shaping (±3.5%)
• Current-mode operation
• Very low start-up current (12μA)
• Very low standby power consumption via active-burst mode
• Internal 350ns leading-edge blanking
• Built-in 3ms soft-start function
• Internal slope compensation
• Built-in PRO pin pull-up (>3.25V) autorestart function
• Over-temperature protection
• VCC under-voltage lockout with hysteresis
• Over-voltage protection on VCC
• Time-based over-load protection
• Short-circuit protection

Typical applications

• Switching Mode Power Supplies
• Power Meters
• AC/DC Adapters, Switching Chargers

More information

• Datasheet
• IC product information