Design of A Second Harmonic Current Based High Step-down 48V-to-1V Resonant DC-DC Converter
- Resource Type
- Conference
- Authors
- Liu, Ziheng; Wang, Jinyan; Gao, Ju; He, Jiayin; Huang, Chengyu; Wang, Xin; Wang, Chen; Zhang, Bin; He, Yandong; Xie, Yong
- Source
- 2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023 - ECCE Asia) Power Electronics and ECCE Asia (ICPE 2023 - ECCE Asia), 2023 11th International Conference on. :1336-1341 May, 2023
- Subject
- Components, Circuits, Devices and Systems
Engineering Profession
Fields, Waves and Electromagnetics
General Topics for Engineers
Power, Energy and Industry Applications
Robotics and Control Systems
Transportation
Ferrites
Switching frequency
Asia
Prototypes
Voltage
DC-DC power converters
Power system harmonics
DC-DC Converter
Second Harmonic Current
48V-to-1V
Resonant
- Language
- ISSN
- 2150-6086
This paper presents an isolated DC-DC converter topology with a single ground-switch resonant inverter and a current driven rectifier. The inverter circuit oscillates the input voltage at a fundamental switching frequency and a series resonant tank is used to obtain the second harmonic current for power delivery. The circuit operates features constant current (CC) output, which means that the voltage gain never depends on the switching duty cycle. After the circuit’s main waveforms are analyzed and the key parameters are optimized, a 5MHz prototype featuring 48V-to-1V transfer and up to 10A output current is verified by simulation with discrete ferrite transformer and GaN power switches.