A compact DC-to-DC step-down regulator PCB designed to take higher dual DC supply voltages (up to ±30 V) and step them down to lower, stable positive and negative rails (down to ±3 V) for small utility circuits inside 1U rack enclosures.

Technical Specifications

• Output Voltage Range: Adjustable from ±3 V to ±30 V DC (stepped down from higher DC inputs)

• Max Current Output: Up to 1 A positive and 1 A negative rail (requires adequate external heat-sinking near 1 A loads)

• Input Requirements: Dual DC power supply

• Board Dimensions: 85 mm x 45 mm (1U rack height compatible)

Key Features

• 1U Chassis Friendly: Ultra-small 85 mm x 45 mm footprint mounts easily in cramped 1U rack units and project boxes

• Dual DC Voltage Reduction: Efficiently lowers existing dual DC power rails to feed lower-voltage auxiliary boards (e.g., metering, digital control, or op-amp sub-circuits)

• Versatile Range: Smoothly regulates down to any required target voltage between ±3 V and ±30 V

Included

• 1x STP-DWN Stepdown Unit Bare PCB

Thermal Note: For higher current draws approaching 1 A per rail, onboard heat sinks should be upgraded or coupled to an external chassis heat sink.

Product name:STP DWN Product identifier:  PCBX009 Manufacturer: Link Audio Design, August-Bebel-Str.18, 08373 Remse, linkaudiodesign@gmail.com