Collection: DC Booster Power Module - Voltage Regulator Board

DC Booster Power Modules and Voltage Regulator Boards for Antminer S19 / S21 Series Hashboard Repair

The DC booster, voltage regulator, and level-shift modules sit between the hashboard chip array and the PSU output rails — converting, boosting, stabilising and amplifying the low-voltage signals that modern ASIC chips require to operate reliably. Current-generation Antminer S19, S19 XP, S19j Pro, S21, S21 XP and T21 hashboards use a small set of dedicated booster modules (18V boost, SGM8304 voltage amplifier, DI08F4D level shifter, 9003IB integrated MOS board, LM75A temperature control) that fail under sustained load and need component-level replacement to restore the chip chain. This collection covers these current-market booster modules and supporting components for hashboard repair on the Bitmain S19 and S21 generations, plus legacy modules for older Antminer L3+ / S17 and Avalon 1166 / 1246 hashboards.

Modern boosters for Antminer S19 and S21 series — the current repair market

The S19 / S21 family is where most active hashboard repair work sits today. Four key modules :

• Antminer 18V boost module — fits S19 / S19+ / T19 / S19 Pro / S19 XP / S21. Boosts the hashboard input voltage to the regulated level the ASIC chips require. When a chain reads under-voltage at the chip monitoring points, this booster is the most common failure point.
• Antminer S19XP 18V booster small board — dedicated small-form-factor 18V booster for Bitmain S19 XP hashboard. Direct OEM-match replacement for the original module.
• SGM8304 voltage amplifier module — for Antminer S21 / S19 XP / T21 / S21 XP hashboard. Signal-level voltage amplification accessory used at the chip-chain monitoring points. Sub-dollar component, fixes phantom voltage-reading issues that look like dead chips.
• DI08F4D level shift board power module — for Antminer S21 XP, signal amplification accessory between the hashboard interface and the chip chain control lines.

Temperature sensors and integrated modules for S19 / S21 hashboards

Temperature monitoring components on current-generation hashboards :

• Antminer LM75A temperature control module U2 — for S19 / S21 / T21 / S19k Pro hashboard temperature monitoring. When a hashboard reports thermal shutdowns or out-of-range temperature readings while the actual chip temperatures are fine, the LM75A sensor is the failure point.
• Antminer S19 / S19k Pro / S21 / T21 temperature IC replacement module — immersion gold quality variant for premium repair-grade replacement.
• 9003IB integrated MOS board — for Antminer S19 / L7 / D7 hashboard, combining MOSFET driver and voltage regulator function in one module for chain-level voltage delivery on current S19-family hashboards.

Legacy modules — older Antminer and Avalon hashboards

Lower-priority but still stocked for repair shops handling legacy fleet :

• Antminer L3+ regulators — Step-down power module 10V for Antminer L3+, Antminer L3+ 14V voltage boost board for hashboard repair, L3+ U73 step-down power module DC board voltage regulator (black version).
• Antminer S17 / S17+ / S17 Pro / T17e converters — XL6009 DC voltage regulator for S17+ / S17 Pro / T17e hashboard buck-boost converter module.
• Avalon 1166 / 1246 boost — 17.5V boost module for Avalon 1166 / 1246 hashboard repair on the A11 / A12 generation.

Why source DC boosters and regulators from LYS Shenzhen

Three reasons component-level hashboard repair shops standardise on our DC module inventory for S19 / S21 series :

• OEM-spec modules for current generation — the 18V booster, SGM8304, DI08F4D and 9003IB modules stocked here match the original Bitmain factory spec. Generic substitutes that look similar can cause chain instability under load even when they bench-test fine.
• Component-level repair vs hashboard replacement — at $1.50-$4 per module, replacing a failed booster is a fraction of replacing the whole hashboard ($300-500). Component-level repair makes economic sense even on a single S21 hashboard.
• Bulk pricing on small-format modules — at small unit cost, fleet-level inventory consumption (50-200 modules / month for active repair shops working S19 / S21 fleets) benefits from quote-based volume pricing. Worldwide shipping with DDP option for US and EU customers.

Frequently asked questions

My S19 / S21 hashboard reports under-voltage on one chain — is the 18V booster the cause ?
Most likely yes. Probe the voltage at the booster output with a multimeter while the hashboard is powered. If the output is below 18V (or 0V) while input is normal, the 18V booster on that chain has failed. Replace the module ; the chain typically comes back online without further chip-level work.

What does the SGM8304 actually do, and when do I replace it ?
The SGM8304 is a voltage amplifier on the hashboard signal path — it amplifies the small voltage readings from the chip-chain monitoring points so the control board can read them accurately. When a hashboard reports phantom under-voltage on a chain that looks healthy, the SGM8304 is a likely cause. Sub-dollar swap is cheaper than chasing fictional chip failures.

How is the DI08F4D different from a regular boost module ?
DI08F4D is a level shifter, not a power booster. It converts logic-level signals between the hashboard interface (3.3V) and the chip control lines (1.8V or 1.2V depending on the chip generation). When S21 XP hashboards report communication errors with the chips but power rails are normal, the DI08F4D is suspect.

I have an older S17 or L3+ hashboard — are those legacy modules still stocked ?
Yes. XL6009 (S17+ / S17 Pro / T17e), 10V step-down (L3+), 14V boost (L3+), U73 step-down (L3+), 17.5V boost (Avalon 1166 / 1246) are all in stock. Older generations represent a smaller share of the active repair market but inventory is maintained for shops still servicing those fleets.

Can I substitute a generic XL6009 from a non-mining electronics supplier ?
Usually yes — the XL6009 is a generic buck-boost converter chip used across many electronics applications. Match the module form factor (board size, mounting) and ratings (input voltage, output current). For current-generation S19 / S21 modules (18V booster, SGM8304, DI08F4D, 9003IB), use OEM-spec replacements — generic substitutes don't match the precise tolerances required.

Get a custom quote for bulk DC modules and regulators

For hashboard repair shops processing S19 / S21 boards at volume, mining farm in-house service teams maintaining a current-generation fleet, or distributors stocking repair-grade modules, our quote-based pricing on DC booster modules reflects bulk consumption. Send your typical module list (18V boosters, SGM8304, DI08F4D, LM75A, 9003IB) and reorder volume and we'll quote back with options.

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