Primary-side regulator with CV/CC control

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Product Description

The MP020-5 is an offline, primary-side regulator that provides accurate constant voltage and constant current regulation without an opto-coupler or a secondary feedback circuit. It has an integrated 700V MOSFET. The MP020-5's variable off-time control allows a flyback converter to operate in discontinuous conduction mode. The MP020-5 also features protection functions such as VCC under-voltage lockout, over-current protection, over-temperature protection, open-loop protection and over-voltage protection. Its internal high-voltage start-up current source and power-saving technologies limit the no-load power consumption to less than 30mW. The MP020-5's variable-switching-frequency technology provides natural spectrum shaping to smooth the EMI signature, making it suitable for offline, low-power battery chargers and adapters. The MP020-5 is available in SOIC8-7A.

Product Features

  • Primary-Side–Control without Opto-Coupler or Secondary Feedback Circuit
  • Precise Constant Current and Constant Voltage Control (CC/CV)
  • Integrated 700V MOSFET with Minimal External Components
  • Variable, Off-Time, Peak-Current Control
  • 550µA High-Voltage Current Source
  • 30mW No-Load Power Consumption
  • Programmable Cable Compensation
  • Multiple Protections: OVP, OCP, OCkP, OTP, and VCC UVLO
  • Natural Frequency Dithering for Improved EMI Signature
  • Low Cost and Simple External circuit
  • SOIC8-7A Package


  • Power Range DefinedNo
  • GradeCatalog
  • TypeRegulator
  • VCC (max) (V)30
  • Isw Limit (A)0.38
  • Vfb (V)4
  • Vac (max) (V)305
  • Vbr (V)700
  • Rds(on) (Ω)10
  • fsw (max) (kHz)75
  • PackageSOIC8-7A
  • Pout (max) (W)7
  • Vac (min) (V)85
Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.