Maximize system performance with Microchip's dual-mode power monitoring IC

In systems that use both AC and DC power supplies, dual-mode power monitoring traditionally requires multiple ICs to ensure superior performance and accuracy. More and more applications, such as solar inverters, smart lighting, and cloud servers are common Use dual mode to keep it safe, use AC as the main power source, DC power as the backup power source, or vice versa. To optimize performance and reduce the development of such systems, Microchip Technology introduces flexible dual-mode power. The monitoring IC can achieve an industry-leading accuracy of 0.1% in the range of 4000:1 for measuring AC and DC power. Integrating power calculation and event monitoring into one IC, reducing material costs and shortening firmware Development time.

The MCP39F511A power monitoring IC is a highly integrated device that meets the ever-increasing demands of high-performance design for power measurement accuracy. To simplify the calibration procedure and meet the high accuracy requirements, the device contains two 24-bit ports.  Analog-to-Digital Converter (ADC) (Sensa ratio 94.5 dB) and a 16-bit calculation engine. The MCP39F511A is suitable for consumer applications, Internet of Things applications (IoT) and industrial applications, and can automatically detect power types and Switch between AC and DC modes to optimize measurement results. The device's on-chip EEPROM records critical events to help developers troubleshoot, and the device also integrates a low-drift reference voltage and internal oscillator to reduce cost.

The MCP39F511A also offers the flexibility and ease of implementation. The device provides standard power calculations such as active, reactive and apparent power, active and reactive energy, root mean square (RMS) current and voltage, line frequency and power factor. Allows designers to easily add high-precision power monitoring to end applications with minimal firmware development. To further simplify development, the MCP39F511A incorporates advanced features such as automatic power save to power-down or power-up to The EEPROM automatically reads the power data from the EEPROM to ensure that the measurement results are never lost when the power is turned off unexpectedly. The event monitoring function for various power conditions can also improve the prevention system maintenance, allowing developers to better manage power consumption.

Bryan Liddiard, vice president of hybrid and linear signal products at Microchip, said: 'In emerging markets such as smart cities and smart homes, developers want to monitor product performance and improve energy use, so power monitoring is becoming more common. MCP39F511A provides customers with Simplified development path allows customers to simultaneously monitor AC and DC power with industry-leading accuracy.'

Development Tools This device is supported by the MCP39F511A Power Monitoring Demonstration Board (ADM00667), a full-featured single-phase power and power monitoring system. The system can calculate and display active power, reactive power, RMS current, RMS voltage, active energy (input and output). And four-quadrant reactive energy, easy to connect via USB to provide automatic control function 'power monitoring utility software', allowing users to easily evaluate all system configuration settings.

For volume purchases, Microchip's Application Center of Excellence can provide custom firmware based on customer hardware verification, helping to save on verification costs and time.

The MCP39F511A is available in quantities of 10,000. The MCP39F511A Power Monitoring Demonstration Board (ADM00667) is also available.