CF-DIC

Current-fed dual inductor converter (CF-DIC) project files

Inspired by article Filho, Barbi (1996), A comparison between two current-fed push-pull DC-DC converters-analysis, design and experimentation and made with great assistance of Dragoljub Aleksijević (aka Macola).

Feature list

• Wide range input: 85 – 265 Vac, 120 – 380 Vdc
• Wide range output: 2.5 – 52.5 Vdc
• Max. current 3 A continuously, or 5 A with forced-air cooling (max. power up to ~260 W)
• Output voltage controlled by tracker circuit or optionally with multiturn trimpot if fixed output voltage is required
• Cascaded PWM Controller LM5041B (sync buck + push-pull stage)
• Isolated HV power ground and signal ground for improved noise immunity
• HV buck section with high performance SiC MOSFET switches
• High performance Vitroperm 500F core material for power transformer
• Synchronous rectifier with low R(ds,on) MOSFET switches
• Over-voltage (OVP), short circuit protection and over-temperature protection (OTP) with latched shutdown and opto-isolated open-collector "Fault" output
• Over-current protection (OCP)
• QR flyback as bias power supply (VIPer35)
• Four bias power supply outputs: +6.5 V, -8 V and "floating" +12 V / -12 V that can be further regulated with LDOs
• Compact size: 157 x 92 x 45 mm
• Weight (with enclosure): 0.49 kg

r5B6 prototype