FAN7688SJX PFM Controller for Bitmain APW12 APW8 APW9 PSU Repair
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FAN7688SJX PFM Controller for Bitmain Miner Power Supplies
The FAN7688SJX is an advanced Pulse Frequency Modulation (PFM) controller designed for high-efficiency LLC resonant converters with synchronous rectification (SR). It is widely used in Bitmain APW12, APW8, APW9 and similar mining power supply platforms for repair, refurbishment, and production.
Using a charge-control based current-mode architecture, the FAN7688SJX simplifies the feedback loop design while maximizing conversion efficiency in isolated DC/DC topologies. Integrated soft-start and adaptive dead-time control further improve switching performance under variable load conditions.
Key Technical Advantages
- PFM control for improved light-load efficiency
- Closed-loop soft-start for safe voltage ramp-up
- Adaptive dead-time control for synchronous rectification
- True input power limiting for enhanced protection
- Integrated fault handling for PSU reliability
- Ideal drop-in replacement for Bitmain PSU repair
Typical Applications
- Bitmain APW-series PSU repair (APW12 / APW8 / APW9 / APW7)
- LLC resonant DC/DC converters
- Server and telecom power modules
- Industrial high-voltage SMPS systems
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | FAN7688SJX |
| Controller Type | PFM Controller |
| Outputs | 4 Outputs |
| Switching Frequency | 100 kHz |
| Input Voltage | 5 V |
| Output Voltage | 18 V |
| Output Current | 110 µA |
| Operating Temp | -40°C to +125°C |
| Package | SOP-16 |
| Mounting Style | SMD / SMT |
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