Digital Control

August 2012 

TM 

Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, 

ColdFire+, C-Ware, the Energy Efficient Solutions logo, Kinetis, mobileGT, PowerQUICC, 

Processor Expert, QorIQ, Qorivva, StarCore, Symphony and VortiQa are trademarks of 

Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, 

CoreNet, Flexis, MagniV, MXC, Platform in a Package, QorIQ Qonverge, QUICC Engine, 

Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, Vybrid and 

Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service 

names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. 

. 

Richy Ye 

Sr. Applications Engineer 

Industrial & Multi-Market Operation 

AISG, Freescale Semiconductor

• What is Digital Power Conversion 

• Why Digital Controlled Power Conversion 

• Freescale Portfolio 

• Freescale Development Support 

• On completion of this course, attendees should: 

− Understand the Key Advantages and Trends in 

Digital Power Conversion 

− Understand the Freescale future roadmap 

addressing digital power conversion 

− Find key resources to help develop next 

generation 

TM 

2 

Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, ColdFire+, C-Ware, the Energy Efficient Solutions logo, Kinetis, 

mobileGT, PowerQUICC, Processor Expert, QorIQ, Qorivva, StarCore, Symphony and VortiQa are trademarks of Freescale Semiconductor, Inc., 

Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, CoreNet, Flexis, MagniV, MXC, Platform in a Package, QorIQ Qonverge, QUICC Engine, 

Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, Vybrid and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All 

other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc.

TM 

Input 

PWM 

Power 

Switch 

LC 

Filter 

Controller 

3 

Output 

SCALE 

The controller block is the key difference between a digital 

switching-mode power supply and analog one 






• “Digital Power Supply” is a power system that is controlled by digital 

circuits, in much the same way as would be with analog circuits, to 

monitor, supervise, communicate and control looping. 

• A fully digital controlled power system includes both “Digital Control” 

and “Digital Power Management” 

Digital Control 

Power switch control feedback or feed 

forward loop, which is controlled by the 

digital circuit or programmable controller 

regulates the output of the power system 

by driving the power switch duty cycle 

using pulse width modulation techniques 

Advanced adaptive control system, the 

control circuits combine A/D conversion, 

pulse width modulation, communication 

interfaces, operating entirely or mostly in 

digital mode to gain excellent system 

performance 

TM 

4 

Digital Power Management 

A digital circuit or programmable controller 

provides the functions of configuration, 

diagnosis, monitoring , protection, supply 

sequencing, and communication with the 

environment. 






DC Input 

Voltage 

Ramp 

Network 

R 

C 

Power 

Switch 

• 5 

PWM 

Generator 

CLK 

C 

Shut 

Down 

Serial Interface 

Current 

Analog 

Compensator 

Network 

TM 

LC 

Filter 

GPIO 

Voltage 

DC Output 

REF 

Analog 

Compensator 

Network 

SCALE 

Voltage 

Analog Control System With Digital Management 

Fan 

Current 

Temperature 

5 

DC Input 

Temperature 

Fan 

Digital 

PWM 

Generator 

GPIO 

Power 

Switch 

LC 

Filter 

SCALE 

DC Output 

Voltage 

SCALE 

Current 

A to D Converter 

DSC Controller 

Serial Interface 

MCU Both MCU and Analog PWM controller 

A to D Converter 

are replaced by one DSC 

Full Digital Control System 






• High Efficiency 

− Meet Energy Star, 80 plus specifications 

(www.plugloadsolutions.com/80PlusPowerSupplies.aspx) 

− High efficient from light load to full rated load range 

− Cost effective soft-switching techniques 

• High Power Density 

− Compact size: high watt per cubic inch 

• High Intelligent Control 

− Digital controlled multi-mode power conversion 

− Adaptive control algorithms – nonlinear loads and components drift 

− Fast transient response 

− Intelligent power management and communication 

• High Reliability 

− Less components usage 

− System monitoring and protection 

− Redundancy – load sharing 

• Quiet Operation 

− Low harmonics, radiated and conducted EMI 

• Innovative Power Distribution 

− New intermediate bus architecture – eliminate isolated DC/DC converter 

• Low Cost 

TM 

6 

Energy 






TM 

Increased performance and cost pressures 

Pressure to increase performance while reducing cost to 

meet customer demands 

System complexity 

On the rise with the need for more features and 

Functionality in smaller form factors 

Time to market constraints 

Increasingly complex development environments and 

design cycle time-frames that are constantly shrinking 

Scalable & Compatible 

Easy migration from existing S08 product with common 

core, IP and tools 

7 






• Eliminate the effects of component tolerance, parametric drift, aging, etc 

• Configurable feedback loop structure for specific application requirements 

• Adaptive control to meet changes in the operating conditions 

• Much greater product flexibility by adding new features without 

hardware changes 

• Store operational data for diagnostic and record keeping 

• Flexible communication capabilities 

• Reduced component count and cost due to the over all integration 

• Shorter R&D cycle, fewer turns of board prototyping 

• Project portability 

• Improved end system performance 

− Energy savings 

− Quieter operation 

− Improved EMI performance 

− System Cost savings 

− Enhanced Reliability 

• IP protection and technology differentiation 

TM 

8 






Vout Constant Voltage 

Vout 

Constant Power 

Traditional Analog control Constant Current 

Constant Voltage 

Constant Power 

Power Fold Down 

Advanced Digital control 

TM 

• No OV and no OC during transient 

because of the smooth loop 

transition 

• Output profile is programmable 

Constant Current 

9 

Over voltage during load step-down 

Over current during load step-up 

Iout 

Iout 






Linear compensation Power stage 

Vref 2 3 4 

Vout 

+ - 

TM 

A 

A S 

A 

S 

A 

S 

0 1 2 3 4 

K 1 2 3 4 

1 2 

B0 

B1S 

B2S 

B3S 

B4S 

1 S S 

A typical control loop implemented by an analog circuit 

Adaptive compensation Power stage 

Vref 0 

1 

1Z 

2 

2Z 

3 

3Z 

4 

4Z 

( 1 S) 

Vout 

+ - 

Nonlinear 

compensation 

0 

Operation condition 

1 

Z 

1 

Software Implementation 

2 

Z 

2 

3 

A digital control loop implemented by Digtal Signal Controller 

Benefit of digital control: 

1) Advanced control algorithm implemented to control complex topologies 

2) Optimize feedback loop to meet application requirements 

3) Runtime changes to compensation parameters according to operating conditions 

Z 

A 

3 

10 

S 

4 

Z 

4 

1 

( 1 

S 

1 

S) 

S 

2 






TM 

11 






Analog 

signal 

Input 

TM 

Quick High 

precision 

A/D 

convert 

Sample period Ts 

quick 

real time 

Signal 

processing 

Signal Reconstruction 

12 

D/A 

convert 

Processing delay and quantization effect reduce system 

precision and performance 

Analog 

signal 

Output 






Control Circuit Complex, Bulky 

TM 

Analog Control Digital Control 

13 

Simple, Programmable, 

Integrated 

IP Protection Bad Good 

PFA Record Bad Good 

Flexibility Bad Good 

Reliability Bad Good 

Design Continuity Bad Good 

On-the-fly Update No Yes 

Sample Mode Continuous Discrete 

Processing Continuous Control Delay 

Note: Digital Logic Shrinking Much Faster Than Analog Circuitry 






G 

P 

I 

O 

C 

O 

M 

56800E 

CPU 

DSC Controller 

TM 

Timer 

DAC 

01001000100001 

10100100010000 

10110101010110 

P 

W 

M 

C 

M 

P 

A 

D 

C 

High Fidelity 

14 

LC 

Filter 






General requirements: 

− Powerful Core 

� The control loop is calculated every 5-20 s 

− Very fast A/D Converter (less than 1 s conversion, capable of 

parallel conversion) 

� At least 12-bit resolution, high dynamical conversion precision 

� Hardware synchronization with PWM 

− PWM module capable of high resolution frequency and duty 

cycle generation 

� The resolution should be comparable to resolution of ADC measurement 

� It means more than 10 bits for frequencies 100 – 400 kHz 

� Flexibility to drive many stages and all available topologies in market 

− Build in analog devices 

� Low propagation delay, anti-jamming features 

� Automatic waveform generation for slope compensation control 

TM 

15 






General requirements: 

− Timer 

� Enough channels for system timing management 

� Capacity to work as capture functionality 

� High resolution 

− User interface 

� Communication interfaces, if required (SCI, SPI, CAN, I2C with 

SMBus/PMBus compliant) 

� 5V tolerance GPIO, low status after reset, high drive strength 

− On-Chip Memory 

� Rich memory configuration 

� Fast access speed, high data retention 

TM 

16 






Performance 

MC56F801x 

MC56F801x – 32MHz 

HR PWM, ADC 

Available 

In Design 

Alpha Sample 

Planned 

TM 

MC56F802x/3x 

MC56F803x – 32MHz 

HR PWM, CAN, ADC, DAC 

MC56F802x – 32MHz 

HR PWM, ADC, DAC 

MC56F800x – 32MHz 

HR PWM 

MC56F824x/5x 

MC56F825x – 60MHz 

64K Flash 

UHR PWM, UHS ADC 

MC56F824x– 60MHz 

48K Flash 

UHR PWM, UHS ADC 

17 

MC56F84xx 

56F847xx – 100MHz 32-bit Core 

256K Flash 

DMA, UHS ADC, Ultra-Hi Res 

PWM, XBar, DAC, ACMP, CAN 

56845xx – 80MHz 32-bit Core 

256K Flash 

DMA, UHS ADC, Ultra-Hi Res 

PWM, XBar, DAC, ACMP, CAN 

56F844xx – 60MHz 32-bit Core 

64K Flash 

DMA, UHS ADC, Hi Res PWM, 

Xbae, ACMP, CAN 

New 

32-bit core 

90nm TFS 

56F827xx – 50MHz 

64K Flash 

GHz PWM 

MC56F827x 

Anguilla Nano– 25MHz 

16K Flash 

GHz PWM 

MC56F81xx 

Future 





other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. 

2012 

2013

Integration 

Segment 

Requirements: 

Efficient core 

Low Power Consumption 

High PWM Resolution 

# PWM channels 

ADC @ 1uS 

Small Memory 

V. Cost sensitive 

Power Adapters 

PFC Control 

Anguilla Nano– 25MHz 

16K Flash 

UHR PWM 

2013 

MC56F81xx 

TM 

Segment 

Requirements: 

Maths efficient core 

Reduced Power Consumption 



ADC @ 500nS 

Mid size memory 

Cost sensitive 

Anguilla Silver – 50MHz 

64K Flash 

UHR PWM, Fast ADC 

2012 

MC56F827x 

Wireless Charging 

Board-Mounted Power Supplies 

Inverters 

Micro-Inverters 

Server Power Supplies 

Nevis Lite – 60MHz 

64K Flash 

UHS ADC, UHR PWM 

MC56F844xx 

Segment 

Requirements: 

Core @ 60MHz 



ADC @

• 60 MHz/60 MIPS from 56800E core 

• 2.7-3.6V operation 

• 64K Bytes program FLASH 

• 8K Bytes program/data RAM 

• Flash security 

• 8Mhz/400Khz tunable internal relaxation oscillator 

• Software programmable phase locked loop 

• Up to 120 MHz peripherals – timers and QSCI 

• Hi-resolution flexible PWM 

− 8 output PWMs module 

− 520ps PWM and PFM resolution 

• 2 12-bit ADCs with total 16 inputs 

− 600ns conversion rate 

− built-in PGA with 1x, 2x, 4x gains 

• 1 12-bit digital to analog converter 

• 3 5-bit digital to analog converters 

• 3 analog comparators 

• 8 16-bit enhanced GP multifunction programmable timers 

• Cyclic redundancy check generator (CRC) 

• Computer operating properly timer 

• 2 high speed queued serial communication interfaces 

(QSCI) 

• 1 queued serial peripheral interface (QSPI) 

• 1 MS-CAN bus interface 

• 2 I 2 C/SMbus communication interfaces 

• Up to 54 GPIOs 

• Inter module cross-bar 

• JTAG/EOnCE debug port 

• Temperature range: -40°C to 125°C with 60 Mhz 

TM 

64KB 

Program Flash 

8kB 

Data RAM 

56800E Core 

60 Mhz 

JTAG/EOnCE 

System Integration 

Module (SIM) 

Interrupt Controller 

19 

8ch 12-bit ADCA 

Crystal Oscillator 

PLL 

Voltage Regulator 

COP 

POR 

LVI 

Prog Gain Amp Ax1,2,4 

8ch 12-bit ADCB Prog Gain Amp Bx1,2,4 

CRC 

Relaxation OSC 

8-ch High Res PWM 

1ch 12-bit DAC 

3 5-bit DAC 

3 Analog Comparators 

2 x High Speed QSCIs 

1 x QSPI 

2x IIC/SMbus 

1 x MSCAN 

8Ch 16-bit Timer 

Inter-module Cross Bar 

Package: 44LQFP, 48LQFP, 64 LQFP 

Breakthrough Features: 

• New generation high speed PWM module 

� 520 ps duty cycle and frequency resolution 

� Flexible edge placement 

• High speed ADC with programmable gain amplifiers 

� 600ns conversion rate 

� Supports multi trigger source in one ADC scan 

• Inter-module cross bar 

� Programmable inter module connection 






256kB 

Program Flash 

32kB 

Program/Data RAM 

32kB Boot/Data 

Flash/EEPROM 

56800E 

V3 Core 

100MHz 

JTAG/EOnCE 


Module (SIM) 

Interrupt Controller 

GPIO 

8-ch 12-bit ADCA 

Crystal Oscillators 

(8Mhz & 32.768KHz) 

COP & EWM 

Package: 48 LQFP, 64 LQFP, 80LQFP, 100LQFP 

Break Through Features 

• 32-bit compatible DSC core 

• 100MHz flash based device 

• DMA controller 

• High Speed ADCs with 300ns conversion time 

• High-resolution PWM with 312ps resolution 

TM 

PLL 


POR 

LVI 

Prog Gain Amp Ax1,2,4 

8-ch 12-bit ADCB Prog Gain Amp Bx1,2,4 

CRC 

Relaxation OSC 8Mhz 

Internal 32KHz Clock 

2 x PIT (RTC) 

Inter-Module XBar 

8-ch High Res PWM 

8-ch PWM w/ Capture 

1 Quadrature Decoders 

1 12-bit DAC 

4 6-bit DAC 

4 Analog Comparators 

2 x PDB 

8-ch 16-bit Quad Timer 

3x QSPI 

2x IIC/SMbus 

1 x FlexCAN 

3 x HS QSCI 

16-ch 16-bit ADC w/ Temp 

DMA Controller 

Core 

• 100 MHz/100MIPS 56800E V3 Core 

• 32bit dual Harvard architecture 

• 32 x 32bit MAC and 32bit arithmetic operation and set-clear bit manipulation 

instructions 

• 2.7-3.6V operation 

Memory 

• 256kB program Flash & 32kB boot/data Flash 

• 32kB data/program RAM or 16kB RAM + 2kB EEPROM 

Integration 

• 3xHS-QSCI, 3xQSPI, 2xIIC/SMBus,1xFlexCAN 

• Multi-purpose Timers 

• 2 periodic interval timers with real time interrupt generation 

• 2 programmable delay blocks 

• 8-channel multi-function timers 

• 8-ch high-resolution PWM module 

• 100MHz clock, 5-bit (MEP) rising and falling edge positioning 

• 312ps PWM and PFM resolution 

• 8-ch PWM module with enhanced input capture 

• 2 8-ch 12-bit A/D converters with built-in PGA 

• 300ns/3.33MHz conversion time with 12-bit resolution 

• Build-in PGA with 1x, 2x, 4x gain amplification 

• 16-ch 16-bit SAR ADC with built-in temperature sensor 

• 2us conversion time 

• Build-in temperature sensor 

• 4 analog comparators w/ 6-bit DAC 

• 1 quadrature decoder 

• 1 12bit DAC with external output 

• DMA controller 

• Inter-module crossbar 

• CRC 

• On-chip voltage regulator (single 3.3V power supply) 

• System integration: internal relaxation oscillator, PLL, COP, 32kHz auxiliary 

internal clock 

• 5V tolerant I/O 

• Temperature range: -40 C to +105 C 

20 






• 56800E V3 Core @ 100MHz from cache (50MHz from flash) 

• 2.7-3.6V Operation 

• Up to 64KB Program FLASH ,with Flash Security 

• Up to 6KB Program/Data RAM 

• Memory Resource Protection Unit 

• Error code correction 

• Up to 100 MHz Peripherals – Timers, PWMs and SCIs 

• Eight Channel Enhanced PWM (100MHz) 

• (Inclusion of Nano Edge PWM under investigation) 

− Up to four programmable fault protection input 

− Dead-time insertion 

− Input Capture function 

• 2 x12-bit ADCs with total 16 Inputs 

− 800ns conversion rate 

− Band-gap reference 

• 2 x Comparators with 6-bit voltage reference 

• 2 x CRC Generator 

• 2 x COP with Multiple clock sources (Watchdog) 

• 4 x 16-bit Enhanced Multifunction Programmable Timers 

• 2 x High Speed SCI 

• 2 x SPI 

• 1x I 2 C/SMbus Communications Interface 

• Four channel DMA controller 

• Inter Module cross-bar 

• Software Programmable Phase Locked Loop 

• Multiple Clock sources 

− External Crystal/Resonator Oscillator 

− 8MHz/400KHz Tunable Internal Relaxation Oscillator 

− 32KHz Internal RC relaxation Oscillator 

• 5V Tolerant IO 

• Industrial temperature:-40C to 105C @ 50MHz 

• AEC – Q100 Level 2 

TM 

2KB 

SRAM 

16KB 

Flash 

4KB 

SRAM 

48KB 

Flash 

6KB 

SRAM 

64K B 

Flash 

Memory 

Options 

21 

Program Flash 

Data RAM 

Error Code Correction 

Memory Resource 

Protection 

56800E Core 

50MHz/40MHz 

JTAG/EOnCE 


Module (SIM) 

PLL 

Crystal OSC 

8MHz OSC 

32KHz OSC 

Inter-module 

Cross Bar 


2 COP 

POR 

32LQFP, 32QFN, 48LQFP & 64 LQFP 

Packages will be pin compatible 

with the MC56F824x/5x and Nevis 






LVI 

Breakthrough Features: 

• High speed ADC @ 800ns conversion time 

• Inter-module Cross bar 

• DMA 

4Ch DMA 

2 x CRC 

Band-gap Ref 

8-Ch 12bit ADCA 

8-Ch 12bit ADCB 

8-Ch PWM 

4-Ch 16bit Timer 

2 x Analog Comp 

2 x 6bit DAC 

2 x HS SCIs 

2 x SPI 

IIC/SMbus 

Run Current < 30mA (using control loop example 

code)

• High-performance Nonvolatile Memory – Flash memory 

− Fast access speed, small page size enables user to designate a flash page as EEPROM 

− Longer Data retention and higher program erase cycles 

− Wide operating temperature range ( -40C to 125C ambient operating temperature) 

• High speed/flexible PWM module 

− Improved PWM resolution on both duty cycle and frequency – Resonant converter applications 

− Arbitrary PWM pulse generation which can be used for any power stage topology 

• High speed, 12-14 bits Analog-to-Digital Converter 

− High input impedance 

− Various power operating modes 

• High-performance On-chip Analog Modules - DACs, Comparators, Programmable Gain Amplifiers – 

Allowing analog designer to work in digital control world 

− Low offset, lifetime drift and gain error 

− Programmable comparator hysteresis 

− Adaptive slope compensation for peak current mode control 

• On-Chip Power-on reset and Low voltage detection 

− Eliminate external Reset and Power supply monitoring devices. 

• On-Chip regulator improves device EMI susceptibility 

− On-Chip linear regulator powers the CPU and peripheral logic circuits 

• Multiple clock sources – multiple On-Chip clocks and external clock source 

− Clock redundancy 

• Low Cost 

− System cost lower than the existing analog plus MCU system 

TM 

22 






TM 

23 






Modular, expandable 

and cost-effective 

development platform 

QEDesign 

Complimentary filtering tool 

ideal for designing FIR and 

IIR filters 

TM 

FreeMASTER 

Allows control of an 

application remotely from a 

graphical environment 

running on a PC 

Processor 

Expert 

Rapid application design tool 

that combines easy-to-use 

component-based application 

creation with an expert 

knowledge system 

Complete IDE that provides a 

highly-visual, automated 

framework to accelerate 

development of the most 

complex embedded applications 

24 

Reference 

Designs 

Complimentary Gerbers, 

code and schematics for: 

• PMSM/BLDC Motor Control 

• LLC Resonant Converter 

• Solar Power Conversion 

• And more 

Control Loop & 

Math Libraries 

Market-focused software 

components increasing 

ease of use and decreasing 

time to market 

Connectivity 

Freescale 

MQX 

BSP & 

Drivers 

File 

System 

Accelerate design success 

with complimentary RTOS 

that is simple to fine tune 

custom applications and 

scalable to fit requirements 






USB

• Application control and 

monitor 

• Live graphs, variable 

watches, and graphical 

control page 

• Real-time operation 

monitor 

• Supports: 

− HCS08, HC12, HCS12 and 

HCS12X BDM 

− 56F8000, 56F8100 and 

56F8300 JTAG 

− SCI driver 

(FMASTERSCIDRV) for all 

platforms 

www.freescale.com/webapp/sps/site/prod_summary.jsp?code=FREEMASTER 

TM 

25 






• Available across DSC product lines 

• Rapid application development 

• Expert configuration system 

• Instant functionality of generated code 

• Two Peripheral programming levels 

− Embedded Components 

− PESL 

• Application Specific Algorithm Libraries 

− All SDK algorithm libraries ported 

• Tested and ready-to-use code 

TM 

26 






CodeWarrior Release 10.2 for 56800/E 

• Comprehensive, scalable application development 

environment allows concurrent approach to 

hardware, software and system level engineering 

to minimize time-to-market. 

− CodeWarrior Development Studio incl. C compiler, 

assembler, linker, debugger 

− Eclipse-based 

− Stand alone Flash programming software 

− Processor Expert rapid application development (RAD) 

tool 

TM 

27 






Implementing a Digital AC/DC Switched-Mode Power Supply using a 

56F8300 Digital Signal Controller 

TM 

28 

AN3115 

Design of a Digital AC/DC SMPS using the 56F8323 Device DRM074 

Design of Indirect Power Factor Correction Using DSP56F80X AN1919 

Design of Indirect Power factor Correction Using the 56F800/E AN1965 

Implementing a Digital AC/DC Switched-Mode Power Supply using a 

56F8300 Digital Signal Controller 

AN3115 

Online UPS using the 56F8300 DRM069 

Design of a Digital AC/DC SMPS using the 56F8323 Device DRM074 

Direct PFC Using the MC56F8013 DRM098 

Solar panel Inverter using MC56F8023 Coming soon 

LLC Resonant AC/DC Switched-Mode Power Supply using the 

MC56F8013 and MC56F8257 

DRM119 






LEDs 

AC sensing 

AC 

Primary 


TM 

Fan Thermal Fan Thermal 

SPI or SCI 

Power 

Factor 

Correction 

Isolation 

29 

Secondary 


A/D PWM 

A/D PWM 

OV/OC 

detection 

reset reset 

Isolated 

DC/DC 

Current sharing 

RS485 / I2C 

(communication) 

Status report 

System info / control 

OV/OC 

detection 

Vout 






Target Devices/Platforms: 

• Switch Mode Power Supply 

• DSC: 

o MC56F80xx Family 

Applications Usage: 

• As DEMO application for AC/DC conversion 

• Communication power supply 

• Server power supply 

• Digital power supply 

Application Features: 

• Specification and Performance of PFC converter: 

• Input voltage:85 ~265VAC; 

• Input frequency:45 ~65HZ; 

• Rating output voltage : 380V; 

• Rating output power:500W; 

• Power factor > 99% 

• Efficiency > 90% 

• Specification and Performance of DC/DC converter: 

• Input voltage:360~380VDC (Output by PFC); 

• Output voltage:48V, 

• Precision : 3%,ripple : 500mV; 

• Output current:10A; 

• Switch frequency:150K; 

• Efficiency > 90% 

TM 

30 

RX0 

TX0 

( connect 

t o PC) 

Vbus 

PWM0 

+ 

Q1 

Q2 

Q3 

Q4 

Cr 

PWM1 PWM2 PWM3 PWM4 PWM5 

Vref PI 

RX0 - 

TX0 

V_O 

DSP56F8037 

α 

PWM0 

PWM1 

PWM2 

PWM3 

PWM4 

PWM5 

ANA1 

ANA0 

Tr 

IO_s 

VO_s 






Q5 

Q6 

Lf1 

Lf2 

D1 

D2 

Cf 

ANA1


• Switch Mode Power Supply 

• DSC: 




• As DEMO application for AC/DC conversion 

• Communication power supply 

• Server power supply 

• Digital power supply 


• General: 

o 1-phase 500W SMPS with MC56F8013 and MC56F82xx 

• Input: 

o 45-65 Hz Operating Frequency Range 

o 85V - 265V Operating Voltage Range 

o Power factor at input > 0.9 

o Conversion efficiency > 90% 

o Total Harmonic Distortion < 10% 

• Output: 

o Output voltage 12V/41A 

o Output voltage 5V/25A 

• Communications: 

o serial communication (SCI) between controllers with opto-isolation 

o serial communication (SCI) of sec. side controller(MC56F82xx) 

with host PC with opto-isolation 

o serial communication (IIC) of sec. side controller(MC56F82xx) via 

PM Bus 

TM 

31 






ADC2 

DC/DC Booster 

PWM0 PWM1 ADC0 ADC1 ADC0 PWM0&1 PWM2&3 

TM 

MC56F82xx/84xxx 

•PV (Solar array) output Voltage Control 

•Maximum Power Point Tracker 

•Booster Control 

•Inverter Control 

ADC1 

32 

Isolated DC/AC Inverter 






Signal 

Conditioning 

Pre-Driver 

ADC PWM GPIO ADC 

• Maximum power point tracking 

• Inverter Control 

MC56F82xx/84xxx 

TM 

Isolated DC/AC Inverter 

SCI 

Pulse Trans. 

PLM 

MC9S08AC60 

33 

Signal 

Conditioning 

GPIO 

PLM 

MC9S08AC60 

SCI 

Gateway Controller 

MCF532x 

LCD 


Internet 

Ethernet 

USB 







• DSC controlled DC to AC Inverter with MC56F8025 


• As DEMO application for the solar energy to power 

line conversion 

• Small power line source for home usage 

• Functions as UPS when battery connected 


• DC to AC Inverter for solar panel is DSC controlled 

inverter with battery charger option 

• Nominal input voltage is 36V – it represents one 36V 

panel, or two 18V panels in series, or three lead-acid 

batteries in series – each of 12V 

• Output power is max 400VA / 230V AC / 50Hz 

• Can work as grid connected or no 

• The MPPT algorithm is implemented to maximize 

output power from the solar panel 

• High frequency power transformer is used to 

maintain isolation between solar panels and grid 

connected power line 

• The switching frequency is up to 50kHz 

• The DC-DC up-converter and full bridge topology is 

used for the AC voltage generation 

• Fault protection implemented – over-current, shortcircuit 

and input under-voltage 

• Isolated serial link RS-485 used for connection to 

whole system 

TM 

34 






AC 

Network 

Interface 

Opto- 

Coupler 

D1 D2 

D3 D4 

Discrete 

Gate 

Drive 

TM 

L1 L2 

D5 

Q1 

R1 

C1 

R2 

Discrete 

Gate 

Drive 

PWM2 ADC2 ADC1 PWM0/1 ADC0 

Fault0 GPIO 

56F82xx/84xxx 

Feature 

• One hardware can be used for different tubes 

• Control Algorithms and functionalities implemented in software 

• Low number of components usage which means low manufacturing cost 

35 

Q2 

Q3 

R3 

C2 

C3 

R4 R5 

R6 

LAMP 






AC Input 

TM 

PWM 

ADC 

Battery or 

Power Mgt 

Rectification & 

Communication 

AC/DC & Coil Drive 

ACMP 

Freescale Transmitter 

Output control 

Communications 

Communications 

I/V & Temp Sense 

VAC Sense 

GPIO 

36 

Freescale Receiver 

UART 

GPIO 

ADC 

ACMP 

On/Off LED 

Charging LED 

Error Status 






TM 

Freescale on Kaixin 

Tag yourself in photos 

and upload your own! 

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