Monolithic Power Systems HF500A-20 | Demoboard EVHF500A-20-P-00A

Description

The EVHF500A-20-P-00A is an evaluation board designed to demonstrate the capabilities of the HF500A-20, a single-stage, isolated flyback power supply converter in AC/DC power module and adapter applications.The HF500A-20 is a fixed-frequency, current-mode regulator with built-in slope compensation. It combines a 700V MOSFET and a full-featured controller into one chip for a low-power, offline, flyback switch-mode power supply. The device optimizes EMI performance, especially for radiated emission.The HF500A-20 features a wide 100VAC to 265VAC input voltage (VIN) range and a 12V/1.5A constant voltage output.The HF500A-20 achieves low standby power consumption and high efficiency under full-load conditions. The HF500A-20 can pass EN55022/CISPR 22 Class B standards for both conducted emissions (CE) and radiated emissions (RE).

Features

• Fixed Frequency, Current Mode Control, and Internal Slope Compensation
• 700V/2.6Ω Integrated MOSFET
• Frequency Foldback Down to 25kHz at Light Loads
• Burst Mode for Low Standby Power Consumption
• Frequency Jittering (fJITTER) for Reduced Electromagnetic Interference (EMI)
• Over-Power Compensation (OPC)
• Internal High-Voltage Current Source
• VCC Under-Voltage Lockout (UVLO) Protection with Hysteresis
• Configurable VIN Brownout Protection and Input Over-Voltage Protection (OVP)
• VCC Over-Voltage Protection (OVP)
• Overload Protection (OLP) with Configurable Delay
• Short-Circuit Protection (SCP)
• Latch-Off Protection via the TIMER Pin
• Configurable Soft Start (SS)
• Thermal Shutdown with Auto-Restart and Hysteresis
• Available in a PDIP8-7B Package

Typical applications

• Home Appliance Power Supplies, Standby and Auxiliary Power

More information

• Datasheet
• IC product information