Power Integrations RDK-942 Reference Design Kit

Power Integrations RDK-942 Reference Design Kit is a 65W USB PD 3.0 Power Supply with 3.3V – 21V / 3A PPS Output using the InnoSwitchTM4-Pro PowiGaN™ INN4373F-H341, ClampZero™ CPZ1075M. The USB PD controller is an Injoinic IP2726S. This design shows the high power density and efficiency possible due to the high level of integration of the InnoSwitch4-Pro active clamp flyback controller providing exceptional performance. This Power Integrations RDK-942 Reference Design is configured using a flyback topology.

Features

InnoSwitch4-Pro: Digitally controllable offline CV/CC ZVS flyback integrated switcher IC with 750V PowiGaN, active clamp drive, and synchronous rectification
- Comprehensive protection features with telemetry for power supply status and fault monitoring
Meets DOE6 and CoC v5 2016 average efficiency requirements with at least a 3.0% pass margin
- 5V Output: 91.35% at 115V_AC (9.52% margin); 90.18% at 230V_AC (8.34% margin)
- 9V Output: 92.18% at 115V_AC (4.88% margin); 92.17% at 230V_AC (4.88% margin)
- 12V Output: 92.29% at 115V_AC (3.99% margin); 92.71% at 230V_AC (4.41% margin)
- 15V Output: 92.32% at 115V_AC (3.47% margin); 93.07% at 230V_AC (4.22% margin)
- 20V Output: 92.37% at 115V_AC (3.37% margin); 93.43% at 230V_AC (4.43% margin)

Meets CoC v5 2016 10% load efficiency requirements with high margin (> 7.01%) for all PDOs
< 25mW no-load input power at 230V_AC
Meets CISPR22 / EN55022 Class B conducted EMI with a high margin
- > 6dB margin at worst case condition (15V/3A, 230V_AC)
High power density of 15.2W/inch³ without enclosure (2.44” x 2.1” x 0.83” form factor)
Low component count (78 total)

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Mechanical Drawing - Power Integrations RDK-942 Reference Design Kit

Power Integrations RDK-942 Reference Design Kit

Features

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Power Schematic

USB PD Interface Schematic

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