SGM6612AYTQX13GTR 20V Boost Converter on Avalon Miner Hash board

SGM6612AYTQX13GTR 20V Synchronous Boost Converter | High-Efficiency Replacement for Avalon Miner Hashboard Repair

The SGM6612AYTQX13GTR is a 20V high-efficiency synchronous boost converter used on Avalon miner hashboards to step a lower input rail up to higher voltages needed by gate drivers, LCD source drivers, or other elevated rails on the board. The synchronous topology (built-in low-side + high-side switching) eliminates the external diode and improves efficiency vs traditional asynchronous boosts at high output current.

Headline specs for hashboard duty: 2.7V–16V input, 4.5V–20V output, resistor-programmable current limit up to 10A, 15mΩ internal MOSFET RDS(on), up to 95% efficiency (at VIN=7.2V / VOUT=16V / IOUT=2A), and up to 2.2MHz switching frequency. Integrated protection covers load disconnection, short-circuit, overvoltage, inductor current limit, and thermal shutdown.

When to Replace the SGM6612A

• Avalon hashboard boost rail dead downstream of the converter — output stuck at input voltage or zero.
• Output current limit triggering early — degraded current-sense circuit or internal MOSFET RDS(on) climbing.
• Visible damage on the TQFN-13 package after an inductor saturation or downstream short event.
• Excessive heat on the converter at normal load — efficiency dropped, internal losses up.
• Hashboard rail ringing under load — degraded compensation, loop instability.

SGM6612AYTQX13GTR Specifications

FAQ — SGM6612A Synchronous Boost

Q: SGM6612A vs TPS61170DRVR — which one for which application?
A: SGM6612A is synchronous (no external diode, higher efficiency, supports up to 10A current limit). TPS61170DRVR is asynchronous (external diode required, 960mA switch). On Avalon boards, match the original part exactly — the external network is built for one or the other and they're not pin-compatible drop-ins.

Q: How do I set the current limit?
A: Resistor on the dedicated ILIM pin. The original board has a fixed value matched to the design's expected peak inductor current. Don't change the resistor when replacing the IC — keep the same value to maintain the original protection envelope.

Q: TQFN-13 rework profile?
A: TQFN packages have center thermal pads that must reflow correctly. Bottom-side preheat 130–150°C, top-side hot air 320°C with flux paste. The center pad carries most of the heat — X-ray inspection ideal post-reflow to confirm pad-join quality.

Q: Bulk pricing for Avalon repair benches?
A: Yes — email contact@lys-sz.com for tube-quantity SGM6612A pricing.

Related products

• TPS61170DRVR BZS Boost Converter 1.2A (Avalon 1066)
• SGM6607YTDI6G High-Voltage Boost Converter (Avalon)
• NCP114AMX075TCG 0.75V LDO (Avalon hashboards)
• SGM2036S 1.8V LDO (Avalon 1446 / 1466)

Avalon hashboard repair benches stocking SGM6612A boost converters by the tube? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.