ICE2QS03 Converter Offline Flyback Topology 52kHz PG-DIP-8-13
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ICE2QS03 Offline Flyback Controller for ASIC Miner PSU Auxiliary
The ICE2QS03 is an offline flyback AC-DC converter controller from Infineon Technologies, used in the auxiliary / standby rail of ASIC miner PSUs. 500 V breakdown voltage + flyback topology deliver efficient operation across the universal mains input range, with 18 V quick voltage start-up for clean PSU boot.
Comprehensive built-in protection: current limiting, open-loop protection, over-voltage protection, soft start, 0.5 maximum duty cycle and additional fault-handling features. Switching at 52 kHz in a PG-DIP-8 through-hole package — repair-bench friendly socket-style installation.
Typical Failure Modes Solved
- PSU stays in standby / won't boot — failed flyback controller, auxiliary rail dead.
- Audible coil whine — controller stuck in fault-retry loop.
- OVP / OCP trip on power-up — internal protection circuit triggering false positives.
- Production refurbishment — bulk controller stock for PSU rebuild lines.
ICE2QS03 Specifications
| Feature | Description |
|---|---|
| Part Number | ICE2QS03 |
| Manufacturer | Infineon Technologies |
| Topology | Offline flyback AC-DC converter |
| Breakdown Voltage | 500 V |
| Quick-Start Voltage | 18 V |
| Switching Frequency | 52 kHz |
| Max Duty Cycle | 0.5 |
| Protection | OCP + OLP + OVP + soft start |
| Package | PG-DIP-8 (through-hole) |
| Condition | Brand New |
FAQ — ICE2QS03 Controller
Q: Through-hole DIP-8 — why on modern PSUs?
A: DIP-8 socket-mounting allows field replacement without solder rework. Many ASIC PSUs use a socketed flyback controller for service-friendliness.
Q: ICE2QS03 vs ICE2QS01 — substitute?
A: Different switching frequency and quick-start voltage. For OEM-spec PSU repair, match the original part marking.
Q: Bulk pricing?
A: Yes — email contact@lys-sz.com.
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PSU rebuild shops stocking ICE2QS03? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouses.
Buying in bulk for a mining farm or repair shop?
Get dedicated B2B pricing on this part and across our full catalog — quote response within 24 hours, payment by T/T USD bank wire, and DDP delivery available for US & EU customers (and other lanes on request).
