Intelligent Power Supply Intelligent Power Supply Design Solutions

Today, power supply designers must create power conversion products that offer greater efficiency, higher power density, higher reliability, advanced communications and sophisticated control features. And, as always, these products need to be developed and marketed quickly and at lower costs. Microchip offers a comprehensive set of Intelligent Power Supply solutions enabling designers to meet these challenges. What is an Intelligent Power Supply? Traditional power supply designs use analog ICs with fixed functionality to provide regulated power. The intelligent power supply integrates a microcontroller...

Silicon Solutions ■ 8-, 16- and 32-bit microcontrollers and 16-bit Digital Signal Controllers ■ MOSFET gate drivers ■ Analog and interface products ■ Non-volatile EEPROM memory Technical Support ■ Intelligent power supply design center ■ Power conversion application notes ■ Web seminars ■ Regional training centers ■ Intelligent power supply experts Software and Algorithms ■ Example code • AC/DC, DC/DC • Point of load ■ Software examples for digital power control loops ■ Highly optimized compensator libraries Reference Designs and Tools ■ Reference designs for different topologies and applications ■...

Power Supply Design Integration Levels Level 1 Integration: On/Off Control At Level 1, electronic intelligence augments a standard analog design. The intelligence provides limited on/off control functions such as start-up sequencing, automatic shutdown and watchdog fault detection functions. These manage analog PWM controllers or integrated regulators, such as the MIC2125 controller or the MIC45208 power module. At a basic level, the MCU can switch enable pins and read power good signals from the analog power controllers. More sophisticated solutions can provide logging functions for later failure...

Power Supply Design Integration Levels Level 3 Integration: Topology Control In addition to Level 1 and Level 2 features, this level permits the standard analog design to be reconfigured. Changing the analog loop configuration and swapping between multiple analog control loop filters can be achieved in the configurable, digital portion of the design. For example, a power supply can change from a PWM control loop to a hysteretic control loop at light loads. This change would allow a continuous inductor current design to operate in discontinuous conduction mode, under selected conditions, increasing...

Power Supply Design Integration Levels Moving to a Higher Level: Level 4 Full Digital Control Full digital control replaces the standard analog control loop design and also provides the power management functions of Levels 1-3 integration. The power supply regulation function is directly controlled by the digital circuits on the processor and the software running on the processor. The full digital solution allows you to employ techniques that are not possible with an analog solution including proprietary digital compensation algorithms, non-linear predictive and adaptive control techniques. The...

Power Supply Design Integration Levels The features of the dsPIC DSCs enable full digital control of applications such as the AC-DC converter illustrated below. The high-speed PWM module provides many operating modes to facilitate implementing various advanced conversion topologies such as power factor correction (PFC), phase-shifted full-bridge with synchronous rectification, and multi-phase buck converters. High-speed ADC conversions can be triggered at precise times in relation to the PWM signal, supporting fast control loops. The high-performance CPU enables implementing advanced digital...

Which MCU or DSC Should You Choose? Microchip makes many product families that can be used in a variety of intelligent power applications, enabling you to support the level of digital integration and performance your application requires. PIC10F Microcontroller Product Family (Level 1) The 6-pin PIC10F family allows digital features to be integrated into any power supply design with minimal BOM impact. The integrated Core Independent Peripherals (CIPs) provide signal generation, custom logic and signal conditioning to augment analog power supply designs, providing on/off control, soft start,...

Which MCU or DSC Should You Choose? PIC24F Microcontroller Family The PIC24F product family is Microchip’s entry-level 16-bit microcontroller, providing a migration path from the PIC18F to extended performance, program memory and RAM. The PIC24F family of devices can operate at speeds up to 16 MIPS and has a hardware multiplier for fast control algorithm computations. Devices are available with multiple UART, SPI and I2C serial communication channels for remote monitoring or control. In addition, these devices also include multiple Input Capture and Output Compare/PWM, comparators and a high-speed...

Self Read/Write *High-Endurance Flash: 128B non-volatile data storage with high-endurance 100k E/W cycles Select 8-bit PIC18F Microcontrollers Product

^Programmable Gain Amplifiers Fore more products, view the parametric tables on www.microchip.com/power. Intelligent Power Supply Design Solutions 11

Reference Designs Platinum Rated 720 W AC/DC Reference Design Demonstrating the flexibility of dsPIC DSCs in Switch Mode Power Supplies (SMPS), this reference design has a peak efficiency of 94.1% and achieves the ENERGY STAR® CSCI Platinum Level. It features a 2-phase interleaved power factor correction boost converter followed by a 2-phase interleaved two-switch forward converter with synchronous rectification. Converter Reference Design This reference design provides an easy method to evaluate the performance and features of SMPS DSCs in high-density quarter brick DC-DC converters. DC/DC LLC...

Intelligent Power Development Systems Microchip offers a number of development boards and advanced development tools which provide an easy and economical way to evaluate intelligent power supply solutions. Included with the development boards are software, documentation and hands-on exercises that allow you to quickly begin designing intelligent power solutions. Development Boards MCP19111 PMBus Enabled Point of Load (POL) Demonstration Board (ARD00609) This board demonstrates how the MCP19111 device operates as a PMBus-enabled POL converter over a wide input voltage and load range. The firmware...