2024 Electric Bicycle New National Standard Charger Technology Webinar
중국
Expert Session:
Designing a High-Efficiency, Compact, Portable eBike Charger with High Power Factor
- 3:40 p.m. to 4:00 p.m.
- Lake Hu, PI Applications Engineering Manager
In this seminar, we will explore how to design eBike chargers using Power Integrations' HiperPFS-5, InnoSwitch4-CZ, and HiperLCS-2 IC families of power conversion ICs and eliminate heatsinks. The advanced switcher ICs enable highly integrated boost PFC, Active Clamp Flyback (ACF), or LLC Half Bridge + SR solutions with high power density and more than 95% end-to-end conversion efficiency The choice of flyback or LLC allows the designer to optimize performance against output power levels from less than 100 W up to more than 1 kW.
Each HiperPFS-5 IC includes a PFC controller, 750 V high-voltage PowiGaN switch, X-capacitor discharge, and high-voltage startup circuits. The design shows how two HiperPFS-5 PFC stages may be paralleled to boost power output to 500 W in a very small form factor. The HiperPFS-5 IC features quasi-resonant control for the lowest switching losses, which works flawlessly with the HiperLCS2-HB IC stage to achieve greater than 95% end-to-end conversion efficiency.
The InnoSwitch4-CZ is an Off-line CV/CC Flyback Switcher IC that includes a 750V PowiGaN switch, Active Clamp driver and synchronous rectification. The InnoSwitch4-CZ pairs with the ClampZero™ Active Clamp IC to dramatically improve DC-DC conversion efficiency by reducing primary switch losses.
The HiperLCS-2 chipset incorporates a 600 V FREDFET in a resonant half-bridge configuration with control, level shifting and drive for self-powered start-up. The secondary HiperLCS2-SR IC provides reinforced isolated feedback via FluxLink™ magneto-inductive coupling, as well as output sensing and SR management for conversion efficiency of 98%.
We will also present a 220 W design example (DER-672) utilizing the HiperLCS-2 chipset plus HiperPFS-5 IC to provide a d a, 24 VDC output. The combination of an LLC resonant half-bridge along with quasi-resonant variable frequency discontinuous conduction mode power factor correction means that the design requires no heatsink and is 95% efficient, eliminating heatsinks. The PFC stage uses PowiGaN technology, and the power supply has a no-load input power of less than 100 mW.
Join us to learn how you can design the highest efficiency, most compact E-Bike charger using HiperPFS-5, InnoSwitch4-CZ and the HiperLCS-2 chipset.
