Ideal for industrial automation, battery management, and instrumentation, the modular platform helps engineers accelerate the development of reliable DC monitoring solutions.
Accurate monitoring of voltage, current, and temperature is fundamental to ensuring the efficiency, reliability, and safety of modern electronic systems. Applications such as industrial automation, battery management, renewable energy, programmable power supplies, and test equipment depend on precise measurement of electrical parameters for optimal operation. To simplify the development of such systems, Microchip has introduced a DC Power and System Monitoring Reference Design that combines precision analog measurement with embedded processing in a compact, modular platform.
The design integrates a high-performance analog front end with an Arm Cortex-M0+-based microcontroller to provide real-time monitoring of multiple system parameters. Its flexible architecture enables engineers to evaluate precision measurement techniques and adapt proven hardware building blocks for custom applications. The platform is suitable for monitoring DC voltages, load currents, and system temperature, making it useful in embedded control systems, instrumentation, energy management equipment, and industrial monitoring applications.
The measurement subsystem is built around the MCP3561R, a 24-bit delta-sigma analog-to-digital converter (ADC) designed for high-resolution data acquisition. Its wide dynamic range allows the detection of very small changes in analog signals while maintaining excellent measurement accuracy. Multiple conversion modes provide flexibility, enabling designers to balance sampling speed with resolution according to application requirements. This makes the design equally suitable for both slow-changing process variables and applications requiring faster measurements.
To maximize measurement accuracy, the analog front end employs zero-drift operational amplifiers that minimize input offset voltage and temperature-induced drift. A precision voltage reference ensures stable ADC operation, while an onboard digital temperature sensor continuously monitors thermal conditions that may influence system performance. Together, these components deliver reliable measurements even in environments where temperature fluctuations and electrical noise are common.
System management is handled by the PIC32CM3204 microcontroller, which performs data acquisition, measurement calculations, peripheral control, and user-interface management. Measured values are displayed on an integrated OLED display, allowing standalone operation without requiring an external processor or PC. A serial EEPROM stores calibration parameters and configuration data, simplifying production calibration and enabling consistent measurement accuracy throughout the product lifecycle.
The reference design also demonstrates several practical hardware design techniques that can benefit engineers developing precision measurement systems. Its low-noise power architecture, carefully designed analog signal paths, mixed-signal PCB layout practices, and modular hardware implementation help improve overall system performance while simplifying customization. Individual functional blocks—including the analog front end, display interface, firmware framework, and power supply circuitry—can be incorporated into new designs, reducing development effort and accelerating product realization.
Supporting bipolar voltage measurements across a wide operating range, the platform is well suited for battery management systems, programmable DC power supplies, industrial process control, renewable energy installations, laboratory instruments, smart power distribution equipment, and embedded health-monitoring systems. By combining precision analog circuitry, high-resolution data acquisition, efficient embedded control, and a reusable hardware architecture, Microchip’s DC Power and System Monitoring Reference Design provides design engineers with a practical starting point for developing accurate, reliable, and scalable DC monitoring solutions while significantly reducing design risk and shortening development cycles.
For more information, click here.
