Microchip公司的dsPIC33FJ06GS001/101A/102A/202A 和dsPIC33FJ09GS302是集成了高速PWM,ADC和比較器的16位微控制器和數(shù)字信號(hào)控制器,采用16位dsPIC33F CPU內(nèi)核,具有代碼效率高的架構(gòu),兩個(gè)40位寬累加器,支持位乘法, ±2%內(nèi)部振蕩器, 2.0 mA/MHz動(dòng)態(tài)電流,主要用在數(shù)字電源轉(zhuǎn)換.本文介紹了dsPIC33FJ09GS302主要特性,框圖, dsPIC33FJ09GS數(shù)字電源轉(zhuǎn)換MPLAB入門套件主要特性,框圖,電路圖,升壓和壓電路圖,以及材料清單和PCB元件布局圖.

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


圖1. dsPIC33FJ09GS302框圖

dsPIC33FJ09GS數(shù)字電源轉(zhuǎn)換MPLAB入門套件

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


圖2. MPLAB數(shù)字電源板外形圖和主要元件(頂層)
MPLAB數(shù)字電源板主要元件(頂層):


圖3. MPLAB數(shù)字電源板外形圖和主要元件(底層)
MPLAB數(shù)字電源板主要元件(底層)

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數(shù)字電源板主要特性:

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)


圖4. MPLAB數(shù)字電源板系統(tǒng)框圖

圖5. MPLAB數(shù)字電源板系統(tǒng)電路圖

圖6. MPLAB數(shù)字電源板電路圖:升壓轉(zhuǎn)換器

圖7. MPLAB數(shù)字電源板電路圖:降壓轉(zhuǎn)換器

圖8. MPLAB數(shù)字電源板元件布局圖:頂層

圖9. MPLAB數(shù)字電源板元件布局圖:底層


詳情請(qǐng)見:
http://ww1.microchip.com/downloads/en/DeviceDoc/75018c.pdf
和http://ww1.microchip.com/downloads/en/DeviceDoc/Digital%20Power%20Starter%20Kit%20User%20Guide_DS52078A.pdf