AES Semigas


27 May 2022

Elevation launches high-voltage power conversion ICs

Elevation Semiconductor of Irvine, CA, USA, a high-voltage power conversion solutions developer founded in 2021, has launched two high-efficiency power ICs with smaller footprints for fast-charging solutions.

Part of the integrated GaN switch family of devices with ultra-efficient GaN high-performance controller ICs for switched-mode power supplies (SMPS), the HL9550/52/54 support QR, DCM, CCM and multiple frequency hybrid-mode operations. The various 300kHz/225kHz/129kHz/82kHz frequency options provide a possibility of flexible design for optimizing the transformers’ size and EMI performance, offering efficient and compact 20-65W charger solutions. The charger solution can cover a wide range of VDD operations without an additional clamp circuit for USB PD applications, as it helps to save bill-of-materials (BOM) cost and PCB space. For protection, they include the LPS function to limit input power and to avoid unexpected overpowering that would damage the system when the PD controller has failed.

The HL9701 synchronous rectifier (SR) is a high-performance controller IC for switched-mode power supplies dedicated to the secondary side of flyback converters. It drives the SR MOSFET and is compatible with high/low-side applications for QR, DCM and CCM operations. The HL9701 intelligently rectifies for secondary current, providing proprietary transient judgment to complete fast turn on/off control for maximum efficiency and high reliability at any load compared with the conventional ultra-fast diode or Schottky diode.

The primary applications for these high-performance controllers are USB PD quick chargers for smartphones and tablet PCs, power adaptors for portable devices, and flyback power supplies with fixed or variable output voltage applications. The power solutions meet DoE VI and CoC 2 efficiency rules (average efficiency above 93% for 115Vac/230Vac), and the technology enables the systems to consume only 20mW of no-load power consumption.

“With industry veterans from leading analog companies experienced in high-voltage power solutions, AC-DC controllers and HV drivers, and wide-bandgap (WBG) semiconductor devices such as GaN, Elevation is well-positioned to enable the next generation of advanced power systems and accelerate the world’s transition to electrification and sustainability,” says CEO David Nam.

Tags: Power electronics