TP2274-TR Operational Amplifier Chip for APW3++ Bitmain Power Supply
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TP2274-TR Quad Operational Amplifier | High-Speed Rail-to-Rail Op-Amp for APW3++ Bitmain Power Supply Repair
The TP2274-TR is a quad operational amplifier in a 14-pin TSSOP package, used on the APW3++ Bitmain power supply for high-speed I/V conversion, signal conditioning, and feedback-loop amplification. Headline specs that matter for PSU control loops: 36V single-supply, 7MHz bandwidth, 20V/µs slew rate, 1.0mV maximum offset voltage, and rail-to-rail output with 80mA drive (at 2V drop).
Why this op-amp on a PSU: the EMIRR of 84dB at 900MHz matters in the noisy switching-power environment, where every nearby MOSFET edge couples RF into op-amp inputs and shifts the operating point. The combination of high input impedance + low offset voltage + low noise + high EMIRR is what makes the TP2274-TR appropriate for control loops sitting inches from a 3kW switching converter.
When to Replace the TP2274-TR
- APW3++ PSU control loop drifting — op-amp offset has degraded, regulation point shifting.
- PSU output ringing or oscillating — degraded slew rate or bandwidth in the feedback loop.
- Visible damage on the TSSOP-14 package after a fault event in the surrounding circuitry.
- One of the four amplifiers in the package dead — replace the whole quad, individual amps are not field-isolable.
- EMI sensitivity climbing — degraded EMIRR coupling noise into the control loop.
TP2274-TR Specifications
| Parameter | Specification |
|---|---|
| Part Number | TP2274-TR |
| Function | Quad operational amplifier |
| Single Supply Voltage | 36V (max) |
| Bandwidth | 7 MHz |
| Slew Rate | 20 V/µs |
| Offset Voltage (max) | 1.0 mV |
| Output Voltage Range | Rail-to-rail |
| Output Current | 80 mA (at 2V drop) |
| EMIRR | 84 dB at 900 MHz |
| Input Impedance | High (suited to high-impedance sources) |
| Package | 14-pin TSSOP |
| Compatible PSU | APW3++ Bitmain power supply |
| Typical Applications | Crypto miner PSU, servo control, photodiode pre-amp, industrial process control, strain gauge, medical instrumentation |
| Condition | Brand New |
FAQ — TP2274-TR Op-Amp
Q: How do I confirm the op-amp is the failed part?
A: Scope the four output pins under load. Healthy outputs track their inverting / non-inverting inputs cleanly. A dead amplifier locks at one rail or shows distorted output. Test each of the four amplifiers individually — only one may have failed but the whole quad needs to be replaced.
Q: Replace just the op-amp, or check surrounding components first?
A: Check upstream feedback resistors and bypass caps for shorts before installing the new chip. A shorted cap on the input network can over-drive the op-amp and kill the replacement on first power-up. Standard rework hygiene.
Q: TSSOP-14 rework profile?
A: Bottom-side preheat 130°C, top-side hot air 320°C with flux paste. Standard SMD rework. Match pin-1 orientation carefully — reversed install will short rails through the substrate diodes on power-up.
Q: Bulk pricing for APW3++ repair benches?
A: Yes — email contact@lys-sz.com for tube-quantity TP2274-TR pricing.
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APW3++ Bitmain PSU repair benches stocking TP2274-TR op-amps by the tube? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.
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