TPS53647RTAT Multiphase Step-Down Controller PMBus QFN-40 – ASIC Miner PSU
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TPS53647RTAT Multiphase Step-Down Controller for ASIC Miner PSU Repair
The TPS53647RTAT is a high-current multiphase step-down controller designed for ASIC miner power supplies. It offers 8 selectable boot voltages across a 0.5V to 2.5V output range, with steps as fine as 5mV, for high-current rails that need a precise output voltage. It works from a 4.5V to 17V conversion input and comes in a compact, thermally efficient 40-pin QFN (6mm × 6mm) package rated from -40°C to 125°C.
Use it to replace a faulty controller in an ASIC miner power supply unit. Its DCAP+ control gives a fast transient response with minimal output capacitance, while phase interleaving and dynamic phase shedding keep efficiency high at both light and heavy load.
Key Features
- PMBus interface for voltage, current, power, temperature and fault telemetry, compatible with 1.8V and 3.3V PMBus bias.
- Configuration by NVM or resistor pin-strapping for boot voltage and protection settings.
- 16-level programmable overcurrent protection (OCP) and 8-level independent overshoot (OSR) and undershoot (USR) suppression.
- Phase current imbalance detection and reporting, plus pre-biased startup support.
- 300kHz to 1MHz frequency selection with closed-loop frequency control, and a driverless configuration for high-efficiency, high-frequency switching.
Replacement Notes
Match the full part number TPS53647RTAT and the 40-pin QFN footprint before replacing the controller. As a QFN package with an exposed thermal pad, it needs hot-air or reflow rework with proper flux and a clean, level pad. After replacement, confirm that the boot voltage and overcurrent settings, set by pin-strapping resistors or NVM, match the original configuration of the power supply before applying full load.
TPS53647RTAT Specifications
| Parameter | Value |
|---|---|
| Part Number | TPS53647RTAT |
| Function | Multiphase step-down (buck) controller |
| Output Voltage Range | 0.5V to 2.5V, steps as fine as 5mV |
| Boot Voltages | 8 selectable (pin-strapping or NVM) |
| Conversion Input Voltage | 4.5V to 17V |
| Control Mode | DCAP+ |
| Switching Frequency | 300kHz to 1MHz, closed-loop frequency control |
| Interface | PMBus (1.8V and 3.3V bias) |
| Overcurrent Protection | 16 programmable levels |
| Overshoot / Undershoot Suppression | 8 independent levels each (OSR / USR) |
| Package | QFN-40, 6mm × 6mm |
| Operating Temperature | -40°C to 125°C |
| Application | ASIC miner power supply repair, server and high-density power supplies |
| Condition | New |
FAQ
What does the TPS53647RTAT do in a miner power supply?
It controls a multiphase step-down converter that delivers a high-current, low-voltage rail between 0.5V and 2.5V, with PMBus telemetry and protection.
Can I change the output voltage after replacement?
The boot voltage is chosen among 8 levels by pin-strapping resistors or NVM. Keep the original configuration of your power supply unless you know the target voltage.
What input voltage does it support?
The conversion input range is 4.5V to 17V.
Do you offer volume pricing for repair shops?
Yes. Email us with the quantity you need and we will send a quote.
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- NTMFS5C430NL N-Channel Power MOSFET – DC-DC Converter Repair
Repairing several power supplies? Email contact@lys-sz.com for pricing on TPS53647RTAT controllers and other PSU components.
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