Transphorm and Weltrend release integrated GaN System-in-Package

1 min read

Transphorm, a supplier of gallium nitride (GaN) power conversion product, and Weltrend Semiconductor, a specialist in adapter USB Power Delivery (PD) Controller Integrated Circuits (ICs), have released their first GaN System-in-Package (SiP).

The WT7162RHUG24A is an integrated circuit designed for use in 45 to 100W USB-C PD power adapters charging smartphones, tablets, laptops, and other smart devices and offers peak power efficiency of greater than 93%. Device samples will be available in the second quarter of 2023.

In addition to bringing a new product to market, this announcement demonstrates Weltrend’s commitment to a complete system solution using Transphorm’s SuperGaN technology. For Transphorm, the announcement is seen as validating its GaN devices’ ease of interface and performance.

“The WT7162RHUG24A is the industry’s first publicly announced SiP using Transphorm GaN. It enables manufacturers to develop a less expensive system solution given fewer components are required and a smaller PCB can be used among other advantages. It also reduces system development time. Effectively, we’re removing design barriers for adapter manufacturers,” said Tony Lin, President, Weltrend.

“Notably, this product also allows Weltrend to move into a new market. It is the first-ever SiP for our PWM controllers, validating our commitment to supporting high volume growth sectors. And, with the integration of the GaN FET, we’ve raised the level of performance output. A win for Weltrend, Transphorm, and our mutual customers.”

“The adapter fast charger market is a fast-growing segment for GaN adoption today. We are gaining market share and continue to innovate, most recently with this GaN SiP, which allows for even easier use of our GaN devices,” said Primit Parikh, President and COO, Transphorm. “Weltrend has delivered a leading power conversion platform which creates a simple-to-use solution for adapter/fast charger customers that both companies can use to accelerate wins in this market.”

The SiP integrates Weltrend’s WT7162RHSG08 multi-mode flyback PWM controller with Transphorm’s 240 milliohm, 650 volt SuperGaN FET. The surface mount device is available in a 24-pin 8x8 QFN package, reducing PCB size.

Key specifications include:

  • Peak Power Efficiency: > 93%
  • Power Density: 26 W/in3
  • Wide Output Voltage Operation: USB-C PD 3.0 and PPS 3.3V~21V
  • Max Frequency: 180 kHz
  • Targeted Topology: Flyback with QR Mode/Valley-switching Multi-mode Operation

The WT7162RHUG24A SiP has been optimised for use in high-performance, low-profile USB-C power adapters for mobile/IoT devices such as smartphones, tablets, laptops, headphones, drones, speakers, and cameras.