3.6KW Bitcoin miner power

Release time:

2023-05-24 14:57

pic

PROJECT INTRODUCTION
The project is a 3.6kW bitcoin miner power supply with input 90-264Vacand output 12V300A. SiC-based totem-pole PFC and interleaved parallelsynchronous rectifier LLC topology were selected for system design. Thetotem pole PFC achieve extremely high efficiency (peak up to 99%) andthe interleaved synchronous LLC reduce output current ripple from 48%to 12% which greatly reducing output capacitor stress.
 
DESIGN SPECIFICATION
Input Voltage 90Vac~264Vac
Output voltage 12Vdc
Rated Power 3600W
System Efficiency 94%@50%load,90.5%@100%load

 

FEATURES

· Totem pole PFC's peak efficiency reaches up to 99%.

· Smaller output current ripple and capacitors:

· Single MCU design reduces the system cost;

· Current sharing design for interleaved LLC

· Full protection, including input UVLO. OCP and output OVP. OLP

 

MAIN TOPOLOGY

pic

MAIN DEVICES
 
Function Part Number Brand
Input Fuse 0443002.DR Littelfuse
PFC HF MOS C3M0060065K Wolfspeed
PFC HF MOS IXFH80N65X2 IXYS
PFC MOS Driver IXDN609SIA IXYS
PFC Current Sensor MCA1101-50-5 Aceinna
LLC MOS IXFH34N65X2 IXYS
LLC MOS Driver IXDN604SIA IXYS

 

 MEASUREMENT RESULTS AND WAVEFORMS

 

picEfficiency curve

picPF curve

 

 

picPFC working waveform @20% load

picPFC working waveform @100% load

 

 

picLLC working waveform @output 50A

picLLC working waveform @output 100A

 

 

picLLC working waveform @output 200A

picLLC working waveform @output 300A

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3.6KW Bitcoin miner power

2023-05-24