原标题：Microchip dsPIC33FJ09数字电源MPLAB解决方案

　　microchip公司的dsPIC33FJ06GS001/101A/102A/202A 和dsPIC33FJ09GS302是集成了高速PWM,ADC和比较器的16位微控制器和数字信号控制器,采用16位dsPIC33F CPU内核,具有代码效率高的架构,两个40位宽累加器,支持位乘法, ±2%内部振荡器, 2.0 mA/MHz动态电流,主要用在数字电源转换.本文介绍了dsPIC33FJ09GS302主要特性,框图, dsPIC33FJ09GS数字电源转换MPLAB入门套件主要特性,框图,电路图,升压和压电路图,以及材料清单和PCB元件布局图.

　　The dsPIC33FJ06GS001/101A/102A/202A and dsPIC33FJ09GS302 devices contain extensive Digital Signal Processor (DSP) functionality with a high-performance, 16-bit microcontroller (MCU) architecture.

　　dsPIC33FJ09GS302主要特性:

　　Operating Conditions

　　• 3.0V to 3.6V, -40ºC to +125ºC, DC to 40 MIPS

　　Core: 16-Bit dsPIC33F CPU

　　• Code Efficient (C and Assembly) Architecture

　　• Two 40-Bit Wide Accumulators

　　• Single-Cycle (MAC/MPY) with Dual Data Fetch

　　• Single-Cycle Mixed-Sign MUL plus Hardware Divide

　　• 32-Bit Multiply Support

　　Clock Management

　　• ±2% Internal Oscillator

　　• Programmable PLLs and Oscillator Clock Sources

　　• Fail-Safe Clock Monitor (FSCM)

　　• Independent Watchdog Timer (WDT)

　　• Fast Wake-up and Start-up

　　Power Management

　　• Low-Power Management modes (Sleep, Idle, Doze)

　　• Integrated Power-on Reset and Brown-out Reset

　　• 2.0 mA/MHz Dynamic Current (typical)

　　• 135 μA IPD Current (typical)

　　High-Speed PWM

　　• Up to Three PWM Pairs with Independent Timing

　　• Dead Time for Rising and Falling Edges

　　• 1.04 ns PWM Resolution for Dead Time, Duty Cycle,Phase and Frequency

　　• PWM Support for:

　　- DC/DC, AC/DC, Inverters, PFC and Lighting

　　• Programmable Fault Inputs

　　• Flexible Trigger Configurations for ADC Conversions

　　Advanced Analog Features

　　• Two High-Speed Comparators with Direct Connection to the PWM module:

　　- Buffered/amplified output drive

　　- Independent 10-bit DAC for each comparator

　　- Rail-to-rail comparator operation

　　- DACOUT amplifier (1x, 1.8x)

　　- Selectable hysteresis

　　- Programmable output polarity

　　- Interrupt generation capability

　　• ADC module:

　　- 10-bit resolution with Successive Approximation Register (SAR) converter (2 Msps) and three Sample-and-Hold (S&H) circuits

　　- Up to 8 input channels grouped into four conversion pairs, plus two inputs for monitoring voltage references

　　- Flexible and independent ADC trigger sources

　　- Dedicated Result register for each analog channel

　　Timers/Output Compare/Input Capture

　　• Two 16-Bit General Purpose Timers/Counters

　　• Input Capture module

　　• Output Compare module

　　• Peripheral Pin Select (PPS) to allow Function Remap

　　Communication Interfaces

　　• UART module (10 Mbps):

　　- With support for LIN/J2602 protocols and IrDA®

　　• 4-Wire SPI module

　　• I2C™ module (up to 1 Mbaud) with SMBus Support

　　• PPS to allow Function Remap

　　Input/Output

　　• Constant Current Source:

　　- Constant current generator (10 μA nominal)

　　• Sink/Source 18 mA on 8 Pins and 6 mA on 13 Pins

　　• 5V Tolerant Pins

　　• Selectable Open-Drain and Pull-ups

　　• External Interrupts on 16 I/O Pins

　　Qualification and Class B Support

　　• AEC-Q100 REVG (Grade 1, -40ºC to +125ºC) Planned

　　• Class B Safety Library, IEC 60730

　　Debugger Development Support

　　• In-Circuit and In-Application Programming

　　• Two Breakpoints

　　• IEEE 1149.2 Compatible (JTAG) Boundary Scan

　　• Trace and Run-Time Watch

　　图1. dsPIC33FJ09GS302框图

　　dsPIC33FJ09GS数字电源转换MPLAB入门套件

　　The MPLAB Starter Kit for Digital Power allows the user to easily explore the capabilities and features of the dsPIC33F GS Digital Power Conversion family. It is a digitally controlled power supply board that consists of one independent DC/DC synchronous Buck converter and one independent DC/DC Boost converter. Each power stage includes a MOSFET controlled 5W resistive load. The starter kit includes an On-Board Debugger/Programmer and is priced at $129.

　　Modern power supplies are becoming smaller, more efficient, more flexible and less expensive. These desirable enhancements have come about as Digital Signal Controllers (DSCs) are incorporated into Switch Mode Power Supply (SMPS) designs. The board provided in the kit is intended to introduce and demonstrate the capabilities and features of Microchip SMPS families of devices. The Digital Power Starter Kit features an on-board programmer/debugger, which eliminates the need for any additional programmer or hardware interface.

　　The Digital Power Starter Kit contains the following:

　　• Digital Power Starter Kit Board

　　• 9V Power Supply

　　• USB Cable

　　图2. MPLAB数字电源板外形图和主要元件(顶层)

　　MPLAB数字电源板主要元件(顶层):

　　图3. MPLAB数字电源板外形图和主要元件(底层)

　　MPLAB数字电源板主要元件(底层)

　　The Digital Power Starter Kit is a power supply board that consists of one independent DC/DC synchronous Buck converter and one independent DC/DC Boost converter.

　　The Digital Power Starter Kit provides closed-loop Proportional-Integral-Derivative (PID) control in the software to maintain the desired output voltage level. The dsPIC® DSC device provides the necessary memory and peripherals for A/D conversion, PWM generation, analog comparison and general purpose I/O, preventing the need to perform these functions in external circuitry.

　　SMPS dsPIC DSC devices are specifically designed to provide low-cost and efficient control for a wide range of power supply topologies. The specialized peripherals facilitate closed-loop feedback control of switch mode power supplies, providing communication for remote monitoring and supervisory control.

　　MPLAB数字电源板主要特性:

　　dsPIC33FJ09GS302 – Low-cost 16-bit digital power conversion DSC

　　One synchronous Buck converter power stage

　　One Boost converter power stage

　　LCD display for voltage, current, temperature and fault conditions

　　On-board In-Circuit Debugger /Programmer via USB

　　On-board programmable resistive loads

　　On-board temperature sensor

　　Compact Design – 4” x 2.5” board

　　Powered via 9V power supply (included)

　　图4. MPLAB数字电源板系统框图