Power Integrations RDK-994Q Reference Design Kit

Introduction

The Power Integrations RDK-994Q is a reference design kit for developing compact, high-voltage isolated power supplies in automotive and electric-vehicle systems. It demonstrates a 35 W ultra-low-profile power design based on Power Integrations’ InnoSwitch3-AQ technology.

Part Description

The RDK-994Q accepts a wide DC input range from 40 VDC to 1000 VDC and delivers a regulated 24 V output. It uses the InnoSwitch3-AQ device with 1700 V silicon-carbide switching technology, enabling operation in demanding high-voltage environments while supporting compact power-supply construction.

Designed as a reference platform rather than a finished production module, the kit gives engineers a practical starting point for evaluating power-conversion performance, isolation requirements, thermal behavior, layout approaches, and component selection. Its ultra-low-profile design is particularly useful where space is restricted, such as within traction inverter assemblies or battery-management hardware.

Applications

Potential applications for the RDK-994Q include:

• Traction inverter gate-drive power supplies
• Emergency power supplies for electric vehicles
• Battery management system auxiliary supplies
• Onboard charger control power
• High-voltage to 24 V isolated DC-DC conversion
• Automotive auxiliary power systems
• High-voltage contactor and relay control supplies
• EV powertrain control electronics
• Industrial high-voltage control power

Industries

Possible industries include:

• Electric vehicles and e-mobility
• Automotive manufacturing
• Automotive Tier 1 and Tier 2 suppliers
• Battery energy storage systems
• Charging infrastructure
• Industrial automation
• Renewable energy systems
• Rail transportation
• High-voltage power electronics development

Usage Ideas

1. Traction Inverter Gate-Drive Supply
   Adapt the reference design as an isolated 24 V supply for gate-driver circuits in a high-voltage traction inverter.

2. Battery Management Auxiliary Supply
   Use the kit as a development basis for providing isolated low-voltage power to battery monitoring and balancing electronics.

3. EV Emergency Backup Power Module
   Develop a compact emergency power supply that maintains critical vehicle controls during high-voltage system interruptions.

Conclusion

The Power Integrations RDK-994Q provides a strong development platform for engineers designing compact 24 V isolated power supplies from high-voltage DC sources. With a 40 VDC to 1000 VDC input range, 35 W output capability, and InnoSwitch3-AQ 1700 V SiC technology, it is well suited to automotive, EV, and other high-voltage power-conversion applications.