ISL99360FRZ-T Power Driver Chip for Antminer Z15 Hash Board Repair

ISL99360FRZ-T Integrated Gate & Power Driver | 60A Switching Stage IC for Antminer Z15 Hashboard Repair

The ISL99360FRZ-T is an integrated gate and power driver chip used on the Antminer Z15 hashboard to drive the main switching stage feeding the ASIC chips. Combines high-precision current and temperature monitors with comprehensive fault protection — the cornerstone of the board's power-delivery network. When this IC fails, the affected hashboard typically drops a full chip chain offline or refuses to boot, and the miner logs voltage-rail or power-stage errors. Replacing the faulty ISL99360FRZ-T restores normal operation without swapping the whole board.

Headline specs: 3-16V input range, up to 60A DC current support, 3.3V-compatible tri-state PWM input, ±3% current monitor accuracy with REFIN, 8mV/°C temperature monitor with OT flag. Built-in protection covers high-side / low-side short, over-current, over-temperature, and under-voltage lockout — designed to fail safe rather than cascade damage.

When to Replace the ISL99360FRZ-T

• Hashboard stuck at boot — power stage not enabling, miner can't reach hashing state.
• One or more dead chip groups — the rail driven by the failed IC is offline.
• Over-current or over-temperature faults reported by the control board pointing at the affected power stage.
• Visible damage on the QFN package — burnt, cracked, or discoloured after a fault event.
• Z15 fleet preventive stock — top-three board-level failure component alongside MP8904DD LDO and main clock oscillator.

ISL99360FRZ-T Specifications

FAQ — ISL99360FRZ-T Power Driver

Q: How do I confirm the ISL99360FRZ-T is the failed part?
A: Confirm the upstream 12V rail is clean. Measure the gate outputs to the power stage. If the IC is dead, gate outputs are stuck or absent while the controller's PWM input is active. Visual inspection often reveals discolouration or cratering on the QFN body.

Q: Rework profile?
A: QFN package — desolder the failed chip with hot air at 320-340°C using a small nozzle, taking care not to disturb adjacent passives. Clean the pads, apply fresh solder paste, align the new ISL99360FRZ-T to the original silkscreen, reflow. Pair the rework with a full hashboard scan on a Z15 test rig before returning to service.

Q: Why is this IC a top-three failure on Z15?
A: Power driver ICs see the highest electrical stress on the hashboard — they switch the bulk current feeding the ASIC chips. Combined with the limited thermal headroom of the Z15's cooling envelope, lifetime is shorter than the passive components around them.

Q: Bulk pricing for Z15 repair benches?
A: Yes — email contact@lys-sz.com for volume pricing and cross-reference help on related Z15 power-stage components.

Related products

• MP8904DD T3JC 0.7V LDO Chip (Antminer Z15)
• Antminer Z15 Control Board Replacement
• Antminer Z15 Water Cooling Kit
• BM1746 Test Fixture (Antminer Z3 / Z9 / Z11 / Z15)

Antminer Z15 repair benches stocking ISL99360FRZ-T by the reel? Email contact@lys-sz.com for bulk pricing and Z15 power-stage repair kit options. Worldwide shipping from our Shenzhen warehouse.