Vox Power has expanded its NEVO+ configurable AC-DC power supply platform with the introduction of digitally enabled output modules that provide PMBus™ 1.2 compatible monitoring and control capabilities.
The new modules are designed for use with the company’s NEVO+600 and NEVO+1200 power platforms, allowing engineers to add digital functionality without changing the mechanical design of existing systems. According to Vox Power, the new modules maintain full compatibility with existing output module slots while enabling system-level monitoring, configuration, and control through an I²C-based PMBus interface.
The addition of digital control allows designers to monitor operating parameters such as voltage, current, power, temperature, and status information directly from each output module. Output voltage and current limits can also be adjusted electronically and stored in non-volatile memory, enabling modules to power up with predefined settings.
The NEVO+ series targets applications where size, weight, and power density are critical design considerations. The platform supports multiple output voltages and power levels and can be configured with up to 16 isolated outputs. Outputs can also be connected in series or parallel to support higher voltage or power requirements.
The new digital modules are available in several voltage and power configurations, including:
- OP1D: 0 V to 7.5 V, 25 A, 125 W
- OP2D: 0 V to 15 V, 15 A, 150 W
- OP3D: 0 V to 30 V, 7.5 A, 150 W
- OP4D: 0 V to 58 V, 3.75 A, 150 W
- OPA2D: 0 V to 15 V, 25 A, 300 W
- OPA3D: 0 V to 30 V, 15 A, 300 W
To simplify development, Vox Power has also introduced an open-source Digital Development Kit based on the ESP32 microcontroller. The kit is intended to reduce the complexity of working directly with PMBus and provides multiple methods for monitoring and controlling the digital output modules.
The development kit supports USB and Wi-Fi communications and includes a browser-based interface that functions as both a virtual instrument and data logger. It also incorporates a VISA-compatible SCPI language interpreter for automated test and custom programming applications, direct PMBus access, and support for controlling up to eight digital modules from a single controller board. Additional features include JSON import/export functions and non-volatile memory configuration workflows intended to streamline factory programming and repeat builds.
Because the platform supports address discovery, zone configuration, and standard SMBus transactions, multiple digital modules can be grouped and managed on a shared bus. This capability can be useful in applications that require coordinated power sequencing, synchronized rail ramping, or centralized fault monitoring. Engineers can also access status and fault registers through PMBus to help identify system issues before they result in downtime.
Vox Power has also included an expansion interface that supports additional communication options through third-party add-on modules. Potential protocols include CAN bus, Modbus, DALI, and DMX, enabling broader system integration across industrial, lighting, and embedded applications.
The company notes that the digital output modules can support direct connection to batteries and external power sources, making them suitable for battery-connected and energy-related applications where charging functions are controlled at the system level.
Alongside the hardware release, Vox Power has launched a new online Product Selector and Configuration Tool. The tool allows engineers to specify parameters such as safety approvals, output requirements, voltage, current, and cooling methods to identify suitable power configurations while minimizing part count and estimated system cost.
