dspic33ep 'gs' press introduction - microchip...

Introducing the dsPIC33EP “GS” Family for Digital Power Applications

Tom Spohrer, Marketing Manager, MCU16 Division

www.Microchip.com/dsPIC33EP64GS506

May 12, 2015

http://www.microchip.com/dsPIC33EP64GS506

May 12, 2015 2

dsPIC33EP “GS” Family

Optimized for Digital Power Applications

Higher Performance

New Features / More Integration

Lower Power & Smaller Footprints

May 12, 2015 3

Example Applications

AC/DC Power Supplies Primary side: Power Factor Correction Secondary side: Regulated DC/DC

DC/DC Power Supplies ¼ Brick and other small form factors

Automotive DC/DC converters

LED & HID Lighting Automotive headlights

Projectors

Industrial & commercial lighting

Broad Range of Applications Solar inverters

Battery chargers Welders

Uninterruptible Power Supplies (UPS)

Higher Performance

May 12, 2015 5


Adaptive algorithms

For improved efficiency over widely varying load conditions

Non-linear and predictive algorithms

For improved dynamic response to transient conditions

Higher switching frequencies

Smaller inductors and capacitors - save cost and space

Performance headroom

For additional independent control loops or more outputs

Add customer-specific differentiating features

Higher Performance Enables More Sophisticated Algorithms

May 12, 2015 6

Performance to Addresses Power Supply Challenges

Efficiency over widely varying loads

Adaptive Algorithms

Phase shedding

Dead-time adjustment

Variable switching frequency

Variable bulk voltage

Dynamic Response

Non-linear Algorithms

Real-time coefficient scaling

Predictive Algorithms

Bypass damping of control loops

CSCI Efficiency Requirements

May 12, 2015 7

Digital Power Peripherals

12-bit ADCs - 5 (up to 22 Channels)

UART - 2

Analog Comp - 4 (with 12-bit DACs)

Programmable Gain Amplifiers - 2

Input Capture - 4

Output Compare - 4

I2C™ - 2 with PMBus™ Support

SPI - 2

UART - 2

Analog Comp. - 4 (with 12-bit DACs)


Input Capture - 4

SMPS PWM - 10 Channels, 5 Pairs

Output Compare - 4

16-bit Timers - 5


SPI - 2


16-bit Timers - 5


MEMORY BUS

Operating Temperature: -40 to 125 °C

PE

RIP

HE

RA

L B

US

16 – 64KB

Flash with

Live Update

8KB RAM

Pe

rip

he

ral P

in S

ele

ct

dsPIC33EP64GS506 Family

MEMORY BUS


PE

RIP

HE

RA

L B

US

dsPIC33EP Core - 70 MIPS

16-bit ALU

17x17

MPY

Barrel

Shifter

16 – 64 KB

Flash with

Live Update

2 – 8 KB

RAM

Pe

rip

he

ral P

in S

ele

ct

Context

Selected

16x16

Register

Bank

Context

Selected

16x16

Register

Bank

Context

Selected

16x16

Register

Bank

May 12, 2015 8



UART - 2



Input Capture - 4

Output Compare - 4


SPI - 2


16-bit Timers - 5


MEMORY BUS


PE

RIP

HE

RA

L B

US

16 – 64KB

Flash with

Live Update

8KB RAM

Pe

rip

he

ral P

in S

ele

ct

New Performance Features


16-bit ALU

17x17

MPY

Barrel

Shifter

Context

Selected

16x16

Register

Bank

Context

Selected

16x16

Register

Bank

Context

Selected

16x16

Register

Bank

May 12, 2015 9

Context-Selected Register Sets

Enables nearly instantaneous

context switches

Two additional register sets

Each assigned to specific interrupt priority level

Persistent data from one interrupt service

routine (ISR) invocation to the next

Reduces saving and restoring register contents

Accelerates compensators up to 50%

Significantly reduces control-loop latencies

W0

W1

W2

W3

W4

W5

W6

W7

W8

W9

W10

W11

W12

W13

W14

W0

W1

W2

W3

W4

W5

W6

W7

W8

W9

W10

W11

W12

W13

W14

Main IPLx

IPLy

W0

W1

W2

W3

W4

W5

W6

W7

W8

W9

W10

W11

W12

W13

Frame Ptr / W14

Stack Ptr / W15

Working Registers

May 12, 2015 10

Five 12-bit ADCs

Higher Performance

300 ns latency

Up to 16 Msps total with 5 ADCs

Early interrupt minimizes ISR overhead

Up to 22 Analog Inputs

Each with dedicated result register

Supports differential inputs

Autonomous Digital Comparators

Compare results against thresholds and

interrupt if over, under, out-of-range, etc.

Offload CPU for higher performance

Hardware Oversampling

Increase ADC precision using more time

For example: 14-bit ADC conversions

performed at 200 ksps per ADC

ADC

Interrupts

PGA1

ADC

Result

Registers

Dedicated

register for

each of the

22 analog

inputs

PGA2

22

12-bit

ADC

12-bit

ADC

12-bit

ADC

12-bit

ADC

12-bit

ADC

May 12, 2015 11

Performance Example: 3P3Z Latency

dsPIC33FJ’GS

50 MHz

dsPIC33EP’GS

70 MHz ISR

Shorter Latency From:

• Faster ADC

• Early interrupt overlaps ISR overhead

• Context-selected registers

• Faster clock

1.84 μs

0.89 μs

ADC Trigger

Compensator Calculations

1140 ns

ADC

600 ns

PWM Update Overall Latency

Latency

ISR 100 ns

ADC

300 ns Compensator

Calculations

543 ns

> 2X

Faster Net ISR

Overhead:

43 ns

May 12, 2015 13



UART - 2

Analog Comp - 4 (with 12-bit DACs)


Input Capture - 4

Output Compare - 4


SPI - 2

UART - 2



Input Capture - 4


Output Compare - 4

16-bit Timers - 5


SPI - 2


16-bit Timers - 5


MEMORY BUS


PE

RIP

HE

RA

L B

US

16 – 64KB

Flash with

Live Update

8KB RAM

Pe

rip

he

ral P

in S

ele

ct


MEMORY BUS


PE

RIP

HE

RA

L B

US


16-bit ALU

17x17

MPY

Barrel

Shifter

16 – 64 KB

Flash with

Live Update

2 – 8 KB

RAM

Pe

rip

he

ral P

in S

ele

ct

Context

Selected

16x16

Register

Bank

Context

Selected

16x16

Register

Bank

Context

Selected

16x16

Register

Bank

Higher-

Precision

References

4 – 64x Gain

40 MHz GBW

May 12, 2015 14

New Feature - Live Update

Growing requirement for high-availability systems

Update firmware in an operating power supply

while maintaining continuous regulation

Features:

Dual Flash partitions

Switchover: < 300 ns

Transparently fits between compensator updates to PWM

Complete development tools support

Lower Power & Smaller Footprint

May 12, 2015 16

Lower Power & Smaller Footprint

dsPIC33EP “GS” Advantages in

1/8th Brick DC/DC Converter

80% lower power

Improves 100W module efficiency by 0.26%

4% savings in dissipated heat for the module

Also reduces size of power circuitry to DSC

Performance for higher switching freq.

reduces size of inductors and caps

Smaller footprint: 4x4 mm package saves

board space

6 m

m

4 m

m

55%

Smaller Area

May 12, 2015 17

Features: Independent buck and boost DC/DC converters

LCD display, status LEDs, temperature sensors

Configurable resistive loads

Hardware slope compensation for peak current mode implementations

On-board debugging / programming via USB

Microchip analog components, including MOSFETs and gate drivers

Available May 12th: Part # DM330017-2

$129.99

MPLAB® Starter Kit for Digital Power

May 12, 2015 18

Microchip’s Free Digital Compensator Design Tool

Calculate compensator coefficients for maximum performance

Plug-in to MPLAB® X IDE

Input Plant Details

Polynomial or Pole/Zero form

Imported data table from

simulation or network analyzer

Five Compensator Types

Digital 2P2Z, Digital 3P3Z

PID, Analog Type II, III

Analyze response & stability

Generate header file with

compensator coefficients

www.microchip.com/DCDT

http://www.microchip.com/DCDT

May 12, 2015 19

Making Digital Power Designs Easier Than Ever

Additional Resources:

Microchip’s Compensator Libraries

Fully optimized and ready to use in your dsPIC33 “GS” design

Numerous Royalty-Free Reference Designs Available

Full design packages include theory of operation, schematics,

board layout, source code, etc.

Loaners available to qualified customers

Partnered with Biricha Digital to Offer In-depth

Digital Design Workshops

Workshops designed for analog power supply designers, as well

as embedded system programmers

http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2680&dDocName=en567449

http://www.microchip.com/pagehandler/en-us/technology/intelligentPower/home.html?tab=t3

http://www.microchip.com/Biricha

May 12, 2015 20


Optimized for Digital Power Applications

Higher Performance

For advanced algorithms to improve efficiency and responsiveness

Also enables higher switching frequencies leading to smaller and

less expensive components, and better power supply specs

New Features / More Integration Reduces cost & size, and provides unobtrusive field upgradability

Lower Power & Smaller Footprints Up to 80% lower power for better overall system energy efficiency

Small 4x4 mm package for space-constrained designs

Digital Power Designs Are Easier With Microchip

Thank You

Note: The Microchip name and logo, dsPIC, and MPLAB are registered trademarks of Microchip Technology Inc. in the U.S.A., and other countries.

All other trademarks mentioned herein are property of their respective companies.

Backup Materials

May 12, 2015 23

dsPIC33EP “GS” Family Product Variants

Prices start at $1.10 in high volume

Available May 12th 2015

Tape & reel options available

May 12, 2015 24

Glossary

3P3Z – Three pole three zero (a type of compensator)

Compensator – Closed-loop feedback filter controlling power conversion

CSCI – Climate Savers Computing Initiative, a nonprofit group promoting

technologies that improve power efficiency of computers

DSC – Digital signal controller

GBW – Gain bandwidth. A measure of an amplifier's performance

HID – High intensity discharge lights that produce light by means of an

electric arc through gas and metal salts (e.g. xenon, metal-halide, etc.)

ISR – Interrupt service routine

PID – Proportional integral derivative (a type of compensator)

Plant – Portion of a power supply responsible for power delivery. Also

know as powertrain

dspic33ep 'gs' press introduction - microchip...

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