SiC adoption example: Chyng Hong Electronic wide range programmable DC power supply

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Design Analog Discrete Power Device Qorvo

Qorvo SiC FET Solution Increases Output Power, Range and Density of DSP-WR Power Series

Chyng Hong Electronic (iDRC) was established in 1986 with the aim of developing test and measurement equipment that is ideal for power electronics. The company's test solutions are used worldwide and have over 123 patents in the US, EU, Japan, China and Taiwan.

For the last 20 years, MOSFET-equipped air cooling units have dominated the commercial market for high-power programmable DC power supplies. The challenge for modern product designers is how to capture the attention of decision makers with breakthrough features and performance.

iDRC's flagship DSP-Wx family is fully compatible with programmable AC Power Distribution Units (PDUs), with a maximum output voltage of 1950V for the DSP1950-27WR. This enables iDRC to easily create a 1950V-2700A-1.8MW wide-range programmable DC power system from up to 100 parallel power supplies for applications requiring higher test voltages, such as solar cells and EV components. can be built.

solution

iDRC employs a unique cascode configuration of Qorvo SiC FETs to achieve three core product values for its power supply series.

1. New HMI improves operability
2. Increase power in the same volume to increase power density
3. Improve the product's environmental temperature adaptability and improve its reliability and durability.

Designers at iDRC chose Qorvo UJ3C120040K3S SiC FETs to replace traditional Si FETs to significantly improve system performance without changing the gate drive voltage.

The Qorvo SiC FET cascode configuration packs a normally-on SiC JEFT with a Si MOSFET to provide a normally-off circuit with typical gate drive characteristics. As a result, FET upgrades using Qorvo's direct replaceable devices can improve performance, reduce conduction and switching losses, improve thermal performance, and integrate ESD protection.

merit

Employing Qorvo SiC FET devices, the DSP-Wx power supply series increases output power by 120%, delivering an unprecedented output of 3U-18kW at continuous maximum output at 50°C. With increased power density, wide power range, and LXI-compliant control interface, iDRC customers will benefit from improved space utilization, reduced power usage, and faster control when setting up automated test and measurement systems. You can easily introduce the system.

By using Qorvo SiC FETs, iDRC has achieved a 15% power increase compared to current industry standards, and also guarantees that all new products will operate at a 25% higher ambient temperature. These high performance levels have enabled iDRC to thrive in a highly competitive market with a unique, high-value series of power supplies.