MCA11205 Bidirectional Current Sensor for Bitmain APW11 Power Supply
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MCA11205 Fully Integrated Bidirectional Current Sensor | High-Accuracy AMR-Based Analog-Output Current Sensor with 300ns Response Time for Bitmain APW11 Antminer Power Supply Repair and Industrial Current Measurement
The MCA11205 is a fully integrated bidirectional current sensor in compact silk-marked package — the current-monitoring IC at the heart of Bitmain APW11 power supply repair. Drop-in replacement for failed current-sense ICs during PSU repair, refurbishment, or production-line work.
Built on Anisotropic Magneto-Resistive (AMR) sensing technology for precision current measurement across the full bidirectional range. Delivers typical total error of 0.6% at 25°C and maximum error of 2.0% over the full temperature range — accuracy specs that make the IC suitable for PSU control-loop feedback where mis-calibrated current sensing causes over-current trips or unstable regulation. 300ns typical output response time handles the fast transient loads characteristic of mining ASIC current waveforms.
Typical Use in Bitmain APW11 PSU Repair
- APW11 current-sense feedback restoration — failed MCA11205 disables the control loop, PSU enters fault mode.
- Production refurbishment — bulk current-sensor inventory for high-volume APW11 rebuild lines.
- Post-fault recovery — current sensor often takes collateral damage from primary-side overcurrent events.
- Industrial current measurement — general-purpose AMR-based bidirectional current monitoring.
- BMS / battery applications — high-accuracy current sense for battery management systems.
MCA11205 Specifications
| Feature | Details |
|---|---|
| Part Number | MCA11205 |
| Sensor Technology | Anisotropic Magneto-Resistive (AMR) |
| Sensor Type | Fully integrated bidirectional current sensor |
| Total Error (typ) | 0.6% at 25°C |
| Maximum Error | 2.0% (over temperature range) |
| Frequency Response | Excellent (high-bandwidth) |
| Output Response Time (typ) | 300 ns |
| Output Type | Analog (proportional to sensed current) |
| Compatible PSU | Bitmain APW11 Antminer power supply |
| Condition | Brand New |
FAQ — MCA11205 Current Sensor
Q: What symptoms indicate a failed MCA11205 on APW11?
A: Typical signs: PSU enters fault / shutdown immediately on power-on, control loop instability (output voltage oscillation), incorrect current reporting in PSU telemetry, or no current feedback signal on the control board input pin. Replacing the MCA11205 typically restores normal PSU operation.
Q: AMR vs Hall-effect current sensors — which is better?
A: AMR (Anisotropic Magneto-Resistive) generally offers better sensitivity and linearity than basic Hall-effect for low-current applications, with faster response (sub-microsecond) ideal for transient detection. Hall-effect is cheaper for very high currents. The APW11 OEM choice of AMR reflects the precision requirements of the PSU control loop.
Q: Can I substitute another current sensor with similar specs?
A: For OEM-spec APW11 repair, no — the MCA11205 has specific pin assignments and silk-marking match. Footprint and pinout are unique. For production repair, sticking with the original part avoids layout headaches and preserves OEM behavior.
Q: Bulk pricing for PSU repair shops?
A: Yes — email contact@lys-sz.com with your monthly APW11 PSU repair volume for tier pricing on MCA11205 stock.
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PSU repair shops stocking MCA11205 by the tube? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouses.
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