With the growing demand for eco-friendly transportation, electric bicycles (eBikes) are becoming increasingly popular. Certain countries have even passed laws to encourage the adoption of eBikes. For example, China has decided to stop issuing new licenses for gas powered bicycles and now only issues licenses for eBikes. Many of these new laws also set weight requirements for lighter bikes, creating the need for smaller batteries and highly efficient chargers. To meet this need, PI offers charger solutions featuring its broad range of highly integrated, high-voltage ICs.

Design features include:

  • Current limiting and thermal shutdown (with automatic fault recovery capability) to improve reliability
  • Frequency jittering to reduce EMI
  • High switching frequency significantly reduces the magnetic size

Design Examples

Document DescriptionDesign
118 W High Line Input CV/CC Flyback Charger Supply w/ Thermal Foldback No-fan Design   pdf icon    
184 W, no PFC, LLC design   pdf icon    
300 W, no PFC, two-switch forward, with 20 W USB   pdf icon    
184 W, no PFC, two-switch forward   pdf icon    
300 W, two-switch forward with PFC front end   pdf icon    

Recommended Product Families

IC Product
Design GuidesTypical Circuit
HiperPFS™-4 NA Boost PFC 110 to 610 W PFC Controller with Integrated 600 V MOSFET Optimized for High PF and Efficiency Across Load Range
HiperPFS™-3 NA Boost PFC 110 to 1000 W PFC Controller with Integrated High-Voltage MOSFET - Qspeed Optimized for High PF and Efficiency
HiperPFS™-2 NA Boost PFC 110 to 425 W High Power PFC Controller with Integrated High-Voltage MOSFET
HiperLCS™ Product family application note. LLC Half-bridge Up to 440 W Integrated LLC power stage incorporating a multi-function controller, high-side and low-side gate drivers, plus two power MOSFETs in a half-bridge configuration
HiperTFS™-2 NA Two-Switch Forward & Flyback Up to 586 W Combined Two-Switch Forward and Flyback Power Supply Controllers with Integrated High Voltage MOSFETs
TOPSwitch™-JX Product family application note. Flyback 12 W to 177 W Integrated Off-Line Switcher with EcoSmart™ Technology for Highly Efficient Power Supplies

Related Design Support Documents

General Design Information
Product Datasheets
AC-DC Selector Guide
Package Information

Contact your local Power Integrations Sales Representative or Distributor for assistance.