** FusionXvision ** Power Management

A 5-channel, 100 W open-source USB-PD power supply with current limited fixed, adjustable, and waveform-capable outputs

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BenchVolt PD is more than just another bench power supply – it’s a compact, versatile, and open-source tool built for makers, engineers, and professionals who need flexibility at their bench or on the go.

Sometimes a single power supply simply isn’t enough. With BenchVolt PD, your everyday USB Type-C charger or even a power bank / your phone can be transformed into a flexible, multi-channel power supply. That means you can safely power different voltage levels from a single device, all while keeping full control and protection, with multiple channels of fixed output (1.8 V, 2.5 V, 3.3 V), two adjustable channels (0.5-5 V and 2.5-32 V), and even arbitrary waveform generation. With its high-quality current protection circuitry, you can safely power multiple boards, test circuits, and development setups simultaneously.

A Complete Development and Testbench Solution

Whether you’re prototyping a new USB Type-C device, powering a Raspberry Pi cluster, or stress-testing consumer electronics, BenchVolt PD gives you the flexibility and confidence you need.

It solves a common problem: most USB Power Delivery adapters are “black boxes” . That means you can’t set exact voltages or see what’s really happening under load. BenchVolt PD makes USB-PD transparent, letting you configure and observe exactly how your devices negotiate and consume power.

That lets you set safe current limits when experimenting with custom boards, or test and log voltage or current data while prototyping your latest creation. If you’re interested in electrical engineering then you can rely on it to be a multi-output power hub for your daily projects.

Features & Specifications

Power & Outputs

• Five independent output channels with adjustable voltage and current • Fixed outputs: 3.3 V, 2.5 V, 1.8 V up to 3 A • Adjustable Output 1: 0.5 V to 5 V up to 3 A • Adjustable Output 2: 2.5 V to 32 V up to 3 A • 2.54 mm (100 mil) pin headers for powering multiple evaluation boards • Arbitrary waveform generation and predefined waveforms (Square, Sine, Triangle, Ramp) available on adjustable channels Note: The fixed outputs and Adjustable Output 1 are LDO-driven, providing very low noise performance.

Arbitrary Functions

• Number of Points: 1024 • Resolution: 12-bit • Point Parameters: Dwell time and Voltage • Dwell Time Range: 4 ms to 16,384 ms • Repetition Rate: 1 to 255 times or continuous

USB Power Delivery Support

• USB-C input supporting PD sink mode • Up to 100 W USB-PD power

Controls

• 1.9-inch TFT display (170 × 320) for real-time voltage, current, and PD mode • Rotary encoder for fast menu navigation and 5 mV step adjustments • SCPI command support for remote programming • Python GUI for desktop control

Electronics

• Microcontroller: STM32F070 • USB-PD controller: STUSB4710 (sink mode) • Configurable LDOs and boost converters for fine-tuned outputs • Overcurrent protection on all channels • Firmware upgradeable via USB through the Python interface (no ST-LINK or external dongle required)

Size & Weight

• Dimensions: 160 × 75 × 40 mm (6.3 × 3.0 × 1.6 in) • Weight: ~500 g (17.6 oz)

Open Source

BenchVolt PD is open-source and we intend to release firmware, hardware schematics, and the Python UI to the public after supporters receive their products from Crowd Supply.

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About the Team

FusionXvision

** Delft, Netherlands · fusionxvision.com

We design open-source products in all areas of electronics, including RF, power electronics, embedded software, and hardware.

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