Fixed Frequency Flyback Controller with Ultra-low No Load Power Consumption

Learn about our Evaluation Kit
Talk to an Engineer or get a Quote

Product Description

HFC0500 is a fixed-frequency current-mode controller with internal slope compensation. It is specifically designed for the medium-power, off-line, flyback, switch-mode power supplies. HFC0500 is a green-mode highly efficient controller. At light loads, the controller freezes the peak current and reduces its switching frequency down to 25kHz to offer excellent light-load efficiency. At very light loads, the controller enters burst mode to achieve very low standby power consumption. HFC0500 offers frequency jittering to help dissipate energy generated by conducted noise. HFC0500 employs overpower compensation function to narrow the difference of over power protection point between low line and high line. HFC0500 also has X-cap discharge function to discharge the X-cap when the input is unplugged. This aids in lowering no load power. HFC0500 features multiple protections that include thermal shutdown (TSD), VCC under-voltage lockout (UVLO), overload protection (OLP), over-voltage protection (OVP), and brown-out protection. HFC0500 is available in an SOIC8-7A package.

Product Features

  • Fixed-frequency current-mode control with internal slope compensation
  • Frequency foldback down to 25kHz at light loads
  • Burst mode for low standby power consumption, meeting EuP Lot 6
  • Frequency jitter to reduce EMI signature
  • X-cap discharge function
  • Adjustable overpower compensation
  • Internal high-voltage current source
  • VCC under-voltage lockout with hysteresis (UVLO)
  • Brown-out protection on HV
  • Overload protection with programmable delay
  • Thermal shutdown (auto-restart with hysteresis)
  • Latch-off for external over-voltage protection (OVP) and over-temperature protection (OTP) on TIMER
  • Latch-off for Vcc over voltage protection
  • Short-circuit protection
  • Programmable soft start


  • Vac (min) (V)85
  • fsw (max) (kHz)65
  • Vbr (V)700
  • Vac (max) (V)305
  • VCC (max) (V)30
  • Typical Pmax (W)120
  • PackageSOIC8-7
  • TypeController
  • GradeCatalog
  • Control MethodFixed Frequency
  • Power Range DefinedNo

Full Features Controller EV Board

The EVHFC0500-S-00A Evaluation Board is designed to demonstrate the capabilities of HFC0500. HFC0500 is a fixed-frequency current mode controller with built-in slope compensation. At light load condition, it freezes the peak current and reduces its switching frequency down to 25kHz. As a result, it offers excellent efficiency at light load. At very light load, the controller enters burst mode. So very low standby power consumption can be achieved.

The EVHFC0500-S-00A is designed for TV, monitor and it typically drives 39W with dual outputs. One is 16VTYP, 1.5A load and the other is 5VTYP, 3A load from 90VAC/60Hz to 265VAC/50Hz.

The EVHFC0500-S-00A has excellent efficiency and meets 2kV IEC61000-4-5 surge immunity and EN55022 conducted EMI requirements. HFC0500 features variable protections like Thermal Shutdown (TSD), Vcc under Voltage Lockout (UVLO), Over Load Protection (OLP), Over Voltage Protection (OVP), Over Temperature Protection (OTP) and Brown-Out Protection.

HFC0500 is available in the SOIC8-7A package.

$25.00 + tax

85VAC~265VAC/50Hz/60Hz, 5.3V/10A 4 USB Ports Evaluation Board

The EVHFC0500+MP6902+MP5017-00AEvaluation Board is mainly designed to demonstrate the capabilities of MPS flyback controller and secondary synchronous rectifier (SR) driver. The HFC0500 is a full-featured flyback controller aims at high-performance and high-integration solution while MP6902 is a secondary synchronous rectifier driver, which can promote converter efficiency observably. MP5017 is a current limiter to protect circuit.

The EVHFC0500+MP6902+MP5017-00A is typically designed for cell phone charger with 4 USB ports, each port has 2.4A source capability and  input is from 85VAC to 265VAC, 50HZ/60HZ.

The EVHFC0500+MP6902+MP5017-00A has excellent efficiency, which can meet CoC V5 and DoE Level Ⅵ requirement easily. It meets IEC61000-4-5 surge immunity and EN55022 conducted EMI requirements. It has multi-protection function, e.g., Brown In/Out, over load protection, over voltage protection, short-circuit protection, cycle by cycle current limit and over-temperature protection, etc.

$25.00 + tax

Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.