Microchip Technology’s New Digital Signal Controllers Power Next-Generation Switch-Mode Power Supplies
Microchip Technology Inc. announced a family of 16-bit dsPIC® Digital Signal Controllers (DSCs) for common, multi-loop switch-mode power supplies (SMPSs) and other power-conversion applications. The dsPIC30F1010 and dsPIC30F2020/2023 (dsPIC30F202X) DSCs have a high-speed, 1 nanosecond (ns) resolution pulse-width-modulator (PWM) and 2 million sample per second (MSPS), 10-bit analog-to-digital (A/D) converter onboard for low latency and high- resolution control. The devices are well-suited for ac–dc converters, isolated dc–dc power-converters and other power-conversion applications, such as embedded power-supply controllers, power inverters and Uninterruptible Power Supplies (UPSs).
Examples of applications that can immediately see cost and performance benefits from the dsPIC DSC SMPS products include power supplies with multiple outputs, coordinated load sharing, hot-swap capability, output coordination, integrated power factor correction or extensive fault-handling. The PWM onboard the dsPIC30F1010 and dsPIC30F202X devices offers 1 ns duty cycle resolution and seven modes of operation, including standard, complementary, push-pull and variable-phase. The 10-bit A/D converter has up to 12 input channels and samples at up to 2 MSPS. Advanced sampling capabilities include individual triggers for each of four sample and holds, and precise, uniquely timed or simultaneous sampling.
The dsPIC30F1010 devices have 6 Kbytes of Flash and two PWM generators, and the dsPIC30F202X have 12 Kbytes of Flash and four PWM generators. All devices in this family operate between 3.0 and 5.5 volts. Correction (PFC), isolated dc–dc converters, UPSs and power inverters. A host of other applications can benefit from the ultra-fast PWM and A/D onboard the dsPIC30F1010 and dsPIC30F202X devices, such as digital lighting and liquid crystal display (LCD) backlights.
The dsPIC30F1010 and dsPIC30F202X DSCs are supported by the MPLAB® Integrated Development Environment (IDE), MPLAB C30 C Compiler, MPLAB SIM 30 Software Simulator, MPLAB ICD 2 In-Circuit Debugger and MPLAB Visual Device Initializer. Additionally, Microchip expects to offer the dsPICDEM™ SMPS Buck Development Board (Part # DM300023) which was designed to support development using the dsPIC30F1010 and dsPIC202X devices. The board is available for early adopter sampling today.
The dsPIC30F1010 is available in 28-pin SOIC, SPDIP and QFN packages, the dsPIC30F2020 in 28-pin SOIC, SPDIP and QFN packages and the dsPIC30F2023 in 44-pin TQFP and QFN packages. These DSCs start at $2.99 each in 10,000-unit quantities. Selected devices are available today for early adopter sampling. General sampling is expected in July, and volume production is expected in August.
