SY7304DBC VIDKB Current-Mode Control Boost Regulator for Antminer S19pro S21 Hashboard
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SY7304DBC VIDKB Current-Mode Boost Regulator – Antminer S19 Pro / S21
Upgrade the performance of your Antminer S19 Pro / S21 hashboard with the SY7304DBC VIDKB current-mode control boost regulator. Compact, efficient design — wide 3-33 V input range with 33 V maximum output, fully suited for portable equipment, battery-powered systems and the dense voltage rails on modern mining hashboards.
Headline numbers: 120 mΩ low-RDS(ON) N-channel MOSFET integrated for high-efficiency switching, 1 MHz switching frequency for compact passives, internal soft start to minimise inrush current at start-up.
Typical Failure Modes Solved
- Boost rail dropout — failed regulator, downstream stage starved.
- Inrush trip on start-up — degraded soft-start.
- Hot-failure recovery — replace after thermal-stress events.
- Production refurbishment — bulk regulator stock for S19 Pro / S21 rework lines.
SY7304DBC VIDKB Specifications
| Feature | Specification |
|---|---|
| Part Number | SY7304DBC VIDKB |
| Function | Current-mode control boost regulator |
| Input Voltage | 3 V – 33 V |
| Max Output Voltage | 33 V |
| Switching Frequency | 1 MHz |
| Internal MOSFET | N-channel, 120 mΩ RDS(on) |
| Soft Start | Internal |
| Compatible Boards | Antminer S19 Pro / S21 hashboards |
| Condition | Brand New |
FAQ — SY7304DBC Boost Regulator
Q: 1 MHz switching — why high frequency?
A: Higher switching frequency = smaller inductor + caps = compact PCB footprint. Trade-off is slightly higher switching loss vs lower-frequency designs. Modern hashboards prefer compact.
Q: How to diagnose a failed boost regulator?
A: Probe the output rail under load. If 0 V or oscillating, the chip is degraded. Verify input voltage + FB resistors before swap.
Q: Bulk pricing?
A: Yes — email contact@lys-sz.com.
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S19 Pro / S21 repair shops stocking SY7304DBC? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouses.
Buying in bulk for a mining farm or repair shop?
Get dedicated B2B pricing on this part and across our full catalog — quote response within 24 hours, payment by T/T USD bank wire, and DDP delivery available for US & EU customers (and other lanes on request).
