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[原创] Microchip dsPIC33EP32GS202数字电源和无线电源开发方案

Microchip公司的dsPIC33EP32GS202是用于数字电源应用的16位数字信号控制器,具有高速的PWM,ADC,PGA和比较器,支持通用多回路数字开关电源(SMPS)和其它数字电源转换应用如AC/DC转换器,DC/DC转换器,功率因速修正(PFC),不间断电源(UPS),逆变器和嵌入电源控制器.dsPIC33EP32GS202内核是16-Bit dsPIC33E CPU,具有两个40位宽的累加器,支持32位乘法器,工作电压3.0V-3.6V.本文介绍了dsPIC33EP32GS202主要特性,框图,CPU框图和应用电路,以及数字电源入门板主要特性,电路图,PCB设计图,以及15W无线电源开发板主要特性,框图,PCB设计图和装配图.

dsPIC33EPXXGS202 is a SMPS & Digital Power Conversion Digital Signal Controller. These devices offer features supporting common, multi-loop digital switch-mode power supplies (SMPS) and other digital power-conversion applications such as:
• AC to DC Converters
• DC to DC Converters
• Power Factor Correction (PFC)
• Uninterruptible power supply (UPS)
• Inverters
• Embedded Power-Supply Controllers
• Arc Fault Detection
dsPIC33EP32GS202主要特性:
Operating Conditions
• 3.0V to 3.6V, -40℃ to +85℃, DC to 70 MIPS
• 3.0V to 3.6V, -40℃ to +125℃, DC to 60 MIPS
Flash Architecture
• 16 Kbytes-32 Kbytes of Program Flash
Core: 16-Bit dsPIC33E 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 PlusHardware Divide
• 32-Bit Multiply Support
• Two Additional Working Register Sets (reducescontext switching)
Clock Management
• ±0.9% 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
• 0.5 mA/MHz Dynamic Current (typical)
• 10 μA IPD Current (typical)
High-Speed PWM
• Three PWM Generators (two outputs pergenerator)
• Individual Time Base and Duty Cycle for each PWM
• 1.04 ns PWM Resolution (frequency, duty cycle,dead time and phase)
• Supports Center-Aligned, Redundant, Complementaryand True Independent Output modes
• Independent Fault and Current-Limit Inputs
• Output Override Control
• PWM Support for:
- AC/DC, DC/DC, inverters, PFC, lighting
Advanced Analog Features
• High-Speed ADC module:
- 12-bit with 2 dedicated SAR ADC cores andone shared SAR ADC core
- Up to 3.25 Msps conversion rate per ADC core @12-bit resolution
- Dedicated result buffer for each analogchannel
- Flexible and independent ADC triggersources
- Two digital comparators
- One oversampling filter
• Two Rail-to-Rail Comparators with Hysteresis:
- Dedicated 12-bit Digital-to-Analog Converter(DAC) for each analog comparator
• Two Programmable Gain Amplifiers:
- Single-ended or independent groundreference
- Five selectable gains (4x, 8x, 16x, 32xand 64x)
- 40 MHz gain bandwidth
Interconnected SMPS Peripherals
• Reduces CPU Interaction to Improve Performance
• Flexible PWM Trigger Options forADC Conversions
• High-Speed Comparator Truncates PWM(15 ns typical):
- Supports Cycle-by-Cycle Current mode control
- Current Reset mode (variable frequency)
Timers/Output Compare/Input Capture
• Three 16-Bit and up to Two 32-Bit Timers/Counters
• One Output Compare (OC) module, Configurableas Timers/Counters
• One Input Capture (IC) module
Communication Interfaces
• One UART module (15 Mbps):
- Supports LIN/J2602 protocols and IrDA®
• One 4-Wire SPI module (15 Mbps)
• One I2C module (up to 1 Mbaud) with SMBusSupport
Input/Output
• Sink/Source up to 12mA/15mA, respectively;Pin-Specific for Standard VOH/VOL
• 5V Tolerant Pins
• Selectable Open-Drain, Pull-ups and Pull-Downs
• External Interrupts on All I/O Pins
• Peripheral Pin Select (PPS) to allow FunctionRemap with Six Virtual I/Os
Qualification and Class B Support
• AEC-Q100 REVG (Grade 1, -40°C to +125°C)
• Class B Safety Library, IEC 60730
• 4x4x0.6 mm and 6x6x0.5 mm UQFN Packagesare Designed and Optimized to ease IPC9592B2nd Level Temperature Cycle Qualification
Debugger Development Support
• In-Circuit and In-Application Programming
• Three Program and One ComplexData Breakpoint
• IEEE 1149.2 Compatible (JTAG) Boundary Scan
• Trace and Run-Time Watch

图1.dsPIC33EP32GS202系列框图

图2.dsPIC33EP32GS202系列CPU框图

图3.dsPIC33EP32GS202系列相移全桥转换器框图

图4.dsPIC33EP32GS202系列离线UPS框图

数字电源入门板

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

The Digital Power Starter Kit is a Switch Mode Power Supply (SMPS) 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 Peak Current Mode control using a 2-Pole, 2-Zero (2P2Z) compensator implemented in software to maintain the desired output voltage level of Peak Current Mode (PkCM) control. The dsPIC® DSC device provides the necessary memory and peripherals for ADC 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.

The dsPIC33 ‘GS’ family of devices provides the following features:
• Integrated program and data memory on a single chip
• Ultra-fast interrupt response time with interrupt priority logic
• High-Speed ADC with multiple Sample-and-Hold (S&H) circuits.
•High-resolution PWM generators, specially designed to support different powertopologies
• High-speed analog comparators for control loop implementation and systemprotection
• On-chip system communications (I2C™/SPI/UART)
• On-chip fast RC oscillator for lower system cost

图5.数字电源入门板系统框图

图6.降压/升压电阻内部负载配置选择图

图7.数字电源入门板外形图(正面)
数字电源入门板正面数字对应表:


图8.数字电源入门板外形图(背面)
数字电源入门板背面数字对应表:


图9.数字电源入门板电路图(1)

图10.数字电源入门板电路图(2):降压转换器

图11.数字电源入门板电路图(3):升压转换器

图12.数字电源入门板PCB设计图:顶层

图13.数字电源入门板PCB设计图:底层

15W无线电源开发板

This user’s guide describes how to use the Wireless Power Development Board. The device-specific data sheets contain current information on programming the specific microcontroller or Digital Signal Controller (DSC) devices.

The Microchip Wireless Power Development Board supports the Qi 1.2.2 standard. The board is a single coil transmitter that operates with a +12V input. The Wireless Power Development Board includes digital demodulation, Foreign Object Detection (FOD), LED status indicators and LED power level indicators. The Qi 1.2.2 standard is implemented with a Microchip dsPIC® DSC. These devices include a powerful CPU core, multiple PWM generators and advanced analog modules, allowing you to customize wireless power transfer applications and designs.

The Microchip Wireless Power Development Board is based on the Qi specified single coil, MP-A2 design topology. A capacitance of 247 nF (±5%) and aninductance of 10 μF (±10%) comprises the resonant circuit. These two componentsdetermine the analog ping frequency for mobile device/wireless power receiverdetection. This board includes MOSFET drivers, MOSFETs, a current senseamplifier, power transfer/power LED indicators and an envelope detector fordemodulation.

图14.15W无线电源开发板外形图

图15.15W无线电源开发板装配图

图16.15W无线电源开发板框图

图17.15W无线电源开发板电路图(1)

图18.15W无线电源开发板电路图(2)

图19.15W无线电源开发板PCB设计图(1)

图20.15W无线电源开发板PCB设计图(2)
详情请见:
http://ww1.microchip.com/downloads/en/DeviceDoc/MchpWirelesspoweruserguide.pdf
http://ww1.microchip.com/downloads/en/DeviceDoc/70005208d.pdf
以及http://ww1.microchip.com/downloads/en/DeviceDoc/50002330b.pdf
50002330b.pdf
70005208d.pdf
MchpWirelesspoweruserguide.pdf

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