The World Leader in High Performance Signal Processing Solutions

PMB TM Di it l PMBusTM Digital PFC Controller with Integrated with Integrated

AC Power Metering

Marco SoldanoPower Systems Architect

S @Marco.Soldano@Analog.com

OUTLINEOUTLINE

IntroductionDigital PFC Controller architectureUser interface keeping it simpleUser interface - keeping it simplePower Supply performance optimizationPMBus command set supportppPower MeteringConclusions

2

Mission StatementMission Statement

Flexible yet simple to use digital PFC controllerAccurate and cost effective Power Metering implementationHigh Performance THD and PFHigh Performance THD and PF Industry Standard PMBusTM command set supportReal time efficiency optimizationy p

3

Different “Flavors” of Digital PowerDifferent Flavors of Digital Power

MICRO(supervisor)

Analog Controller“Tweaking”PMBUS

MICRO(supervisor)

Analog ControllerI2CPMBUS

Digital Wrapper( p )

Digital FSMPMBUS

pp

Digital FSMControllerPMBUS

DSPPMBUS

4

Design Flow comparison: Loop CompensationDesign Flow comparison: Loop Compensation

1)( zsKH OG

1

1)(pss

KsH

AN

ALO

P

bzzazKzH

1)(D

SPFS

M

5

ADP1047: Single Phase Digital PFC ADP1047: Single Phase Digital PFC Controller

VoutRelay

VRec

AC

BulkCap

Relay

ACInput

3.3V

VAC

AGND1

2

24

23

VDD

RES

PMBusPGND

VFB

OVP

ILIMNC

3

4

5

6

7

22

21

20

19

18

RTD

SDA

SCL

ADD

SYNC

CS+CS-

DGND

PSON

NC7

8

9

10

11

18

17

14

16

15

PGOOD

INRUSH

AC_OK

PWM2

SYNC

ADP1047VCORE12 13PWM

ADP1047 Block DiagramADP1047 Block Diagram

ADP1047

1

2

3

4

5

24

23

22

21

20PGND

VAC

AGND

VFB

OVP

VDD

RESRTD

SDASCL

ADD

ADP1047TOP VIEW

(Not to Scale)

6

7

8

9

10

11

19

18

17

14

16

15

CS+CS-

DGND

SCL

PSON

PGOODINRUSH

ILIM

AC_OK

NC

PWM2

SYNC

12 13VCORE PWM

24 13

1210.236BSC

PIN 1

0.154BSC

0.341BSC

SEATINGPLANE

0.0100.004 0.012

0.0080.025BSC

0.0690.053

0.0100.006

0.0500.016

8°0°

0.0650.049

COPLANARITY0.004

COMPLIANT TO JEDEC STANDARDS MO-137AE

24 Lead QSOP Package24 Lead QSOP Package

Time Continuous Sigma-Delta ADCTime Continuous Sigma-Delta ADC

Bits = Log2(Clock/BW)g2( )

FAST – LO Accuracy MID Speed/Accuracy SLOW – HI AccuracyFAST LO AccuracySome Protections,

trigger levels

MID Speed/AccuracyControl Loop,Protections

SLOW HI AccuracyTelemetry,

Power Metering

Time continuous Sigma-Delta+ inherent anti-alias filter

Nyquist rate (Flash or SAR)+ does not necessarily require high clock inherent anti alias filter

+ single-bit SD has guaranteed linearity+ smaller area- High clock rate needed for higher

resolution (over-sampling)

does not necessarily require high clock rate (but higher eases anti-alias requirement)

- Higher power consumption- Needs anti-alias filterresolution (over sampling)

- Requires a decimation filter post ADC - Linearity dependent on matching

8

ADP1047/48 Control LoopADP1047/48 Control Loop

VFB1 VAC rms2

VACIL

Compensator

K

Compensator

K

Hv(z)

_VAC,rms

_Hi(z)

DIREFfrequencyfz fp frequencyfz fp

Hv(z)VREF + +

Hi(z)VEA

Voltage Loop Compensator

(Normal and Fast)

Current Loop Compensator

(High and Low Line)

NORMAL COMPENSATION FAST COMPENSATIONHI LINE HI LINE LIGHT-LOAD

CURRENT FILTERHI LINE HEAVY-LOAD

CURRENT FILTERHI LINE CURRENT FILTER

FAST VOLTAGE FILTER

(Normal and Fast) ( g )

CURRENT FILTER

SLOW VOLTAGE FILTER

CURRENT FILTER

SLOW VOLTAGE FILTERFAST VOLTAGE FILTER

LO LINE LO LINE LIGHT-LOAD CURRENT FILTER

LO LINE HEAVY-LOAD CURRENT FILTER

LO LINE CURRENT FILTER

SLOW VOLTAGE FILTERSLOW VOLTAGE FILTER SLOW VOLTAGE FILTER

SLOW VOLTAGE FILTER

9

Voltage and Current Loop programmingVoltage and Current Loop programming

10

Fast Loop to Improve Transient Response Fast Loop to Improve Transient Response

V Iin

Load Step Change: 150W300W

Vrec

I

Iin

Iout

Iload

VbulkProgrammableRange Vout

Progr.Delay(1-8 half cycles)

out

Iin

Fast loop is enabled when Vout is outside programmable

FastloopIout

Fast loop is enabled when Vout is outside programmable range (from 1.5% to 12%) Switch between fast loop and regular loop happens at voltage zero-crossingsControl switches back to Normal filter after programmable

Vout

11

Control switches back to Normal filter after programmable delay of 1 to 8 AC line cycles

Intuitive Graphic User InterfaceIntuitive Graphic User Interface

APEC 201012

Power Factor and THD performancePower Factor and THD performance

Vin=90V PF>0.99, THD=0.9%

0.9

1

0.8

actor  

Vin = 90V

Vin (V) Vo (V) Power Factor

Distortion (THD)

90 385 >0.99 0.9%

120 385 0 99 1%

0.6

0.7

Power Fa Vin = 120V

Vin = 150V

Vin = 180V

Vin = 210V

Vin = 240 V

120 385 >0.99 1%

150 385 0.99 1.4%

180 385 0.99 1.7%

220 385 0.99 2.5%Vin=220V PF=0.99, THD=2.5%

0.4

0.5

220 385 0.99 2.5%

260 385 0.99 3.2%

0 50 100 150 200 250 300 350

Output power (W)

13

ADP1047 – Programmable Inrush ControlADP1047 Programmable Inrush Control

Programmable start-up inrush control of external relay

Programmable soft start delay and timingand timing

14

Adaptive Boost VoltageAdaptive Boost Voltage

OutputVoltage

VOH240V AC input

VOL2

High line

VOH2

VOH1

Power

P1 100%

VOL1 Low line

P2P1 100%P2

Bulk Voltage tracking to improve efficiency and keep hold up time constant

Voltage is adjusted based on input Power and Input Line Voltageg j g

15

PMBus Command Set SupportPMBus Command Set Support

Native support for 31 PMBus commandsPIN, VIN, VOUT, IIN reporting in Linear FormatStandard Warning and Fault limit settingsStandard Warning and Fault limit settingsSupport of Standard PMBus Fault Responses

Additional 134 Manufacturer Specific CommandsAdditional functionalities not covered by PMBus

16

Data representation for Power Voltage and Data representation for Power, Voltage and Current – Linear Format

Mantissa (bits)

Exp (N) Min Range

Min LSB Max Range

Max LSB Exponent # of bits

VIN 11 -3 to -1 256V 0.125V 1024V 0.5V 3: -22 to 22-1

IIN 11 10 t 5 2A 0 976 A 64A 31 25 A 5 24 t 24 1IIN 11 -10 to -5 2A 0.976mA 64A 31.25mA 5: -24 to 24-1

PIN 11 -3 to +4 256W 125mW 32 8kW 16W 3: -22 to 22-1PIN 11 -3 to +4 256W 125mW 32.8kW 16W 3: -2 to 2 -1

VOUT 11 -3 to 0 256V 0.125V 2048V 1V 3: -22 to 22-1

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AC Power MeasuringAC Power Measuring Input RMS Current/Voltage Sampling bandwidth is 24kHzp g Sampling window is synchronized with line frequency

Input True RMS Power is calculated cycle by cycle and then averaged Data is averaged over a programmable window Data is averaged over a programmable window from 133ms to 68s @ 60Hz from 160ms to 82s @ 50Hz

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1047 Power Metering Data with ideal AC Input 1047 Power Metering Data with ideal AC Input Power Error in terms of percentage (Vout=385V)

3 00%

5.00%Vin = 90VVin = 120VVin = 150V

1.00%

3.00%

tage

Vin = 180VVin = 210VVin = 240 V

‐1.00%

Error p

ercent

‐3.00%

E

‐5.00%

0 50 100 150 200 250 300

19

Output Power (W)

1047 Power Metering Data with Non-ideal AC Input 1047 Power Metering Data with Non ideal AC Input Accuracy is within 1% at loads higher than 125W

VoltageAC Input

5.00350

frompower meter4.50

5.00350

2.00

3.00

4.00

200

250

300age of Error

power (W

)

from power meter

From 1047

Error pecentage

2.00

2.50

3.00

3.50

4.00

150

200

250

300

tage

 of E

rror

Power (W

)

from power meter

From 1047

Error percentage

0.00

1.00

50

100

150

Percen

t

Inpu

t p

1 00

‐0.50

0.00

0.50

1.00

1.50

0

50

100

150

Percen

t

Inpu

t 

20

‐1.000

0% 20% 40% 60% 80% 100%

percentage of full  load

‐1.000

0% 20% 40% 60% 80% 100%Percentage of full  load

1047 Power Metering Data with Non-ideal AC Input 1047 Power Metering Data with Non ideal AC Input Accuracy is within 1.5% at loads higher than 125W

Voltage AC Input

5 005.506.00

300

350

from power meter

5.00

300

350

2.002.503.003.504.004.505.00

150

200

250

300

e of Error

ut Pow

er(W

)

p

From 1047

Error percentage

2.00

3.00

4.00

150

200

250

300tage

 of E

rror

ut Pow

er (W

)

from power meter

From 1047

Error percentage

‐1.00‐0.500.000.501.001.50

0

50

100

Percen

tage

Inpu

‐1.00

0.00

1.00

0

50

100 Percen

t

Inpu

21

0% 20% 40% 60% 80% 100%

Percentage of full  load0% 20% 40% 60% 80% 100%

Percentage of full  load

ADP1047 - SummaryADP1047 - Summary

Flexible, digital Power Factor correction controller Accurate Power Metering capabilityEasy to use GUIEasy to use GUIReal-time Efficiency optimizationEnhanced dynamic responsey pProgrammable soft start and Inrush ControlFrequency Spread Spectrum improves EMIPMBusTM Compliant

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