Volver a Monolithic Power Systems (MPS)

Monolithic Power Systems (MPS) EVHF500A-20-P-00A Controller Evaluation Board

Monolithic Power Systems (MPS) EVHF500A-20-P-00A Controller Evaluation Board is 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 Monolithic Power Systems (MPS) 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.

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)
  • VCC voltage Under-Voltage Lockout (UVLO) protection with hysteresis
  • Internal high-voltage current source
  • Configurable input voltage (VIN) brownout protection and input Over-Voltage Protection (OVP)
  • VCC Over-Voltage Protection (OVP)
  • Overload Protection (OLP) with a configurable delay
  • Short-Circuit Protection (SCP)
  • Latch-off protection via the TIMER pin
  • Configurable Soft Start (SS)
  • Thermal shutdown with auto-restart and hysteresis

Applications

  • Home appliance power supplies
  • Set-top boxes
  • Standby and auxiliary power
  • Adapters

Board Layout

Mechanical Drawing - Monolithic Power Systems (MPS) EVHF500A-20-P-00A Controller Evaluation Board
Publicado: 2025-07-15 | Actualizado: 2025-07-31