





Opensource hardware
PwrBlock 323
programmable DC power supply designed specifically for automated hardware testing
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Description
Electrical
Output power: up to 96 W
Output range: up to 32 V, up to 3 A
Input power: USB Type-C 20 V 5 A
Protections: OVP, OCP, OPP, OTP
Measurement resolution: 10 mV / 1 mA
Adjustment resolution: 10/20 mV / 1mA
Ripple: < 30 mVpp, < 2 mA RMS
Hardware
Power controller: LM51772
Input protection: TPS259830
MCU: STM32G0C1CEU
Measurements: INA229
Fixture-friendly form factor intended to mount inside a jig/stand
Robust mechanical design with multiple mounting holes
Connectors allow either direct wiring or direct plug-in to a jig interface board
Dimensions (L × W × H): 130 x 70 x 20 mm (5.12 x 2.76 x 0.79 in)
Interfaces & Ports
USB Type-C for power-in and control
Additional USB Type-C for control
Pin Header 2.54 10 for control
Pin Header 2.54 40 for power and protected IO
Power-in
Power-out
UART
SPI
I2C
7 x DIO
Banana jacks for direct power connection
Automation & Software
SCPI control (automation-friendly command interface)
Python-ready (designed to be easy to integrate into test scripts and frameworks)
Suitable for automated test jigs, HIL, and production stations