APEC_2010_Digital_Power_Plenary_Session_Presentation.ppsx

Digital_Power_Plenary_Session_Presentation APEC

1. EMBEDDED POWER LABS
Digital Power
After The Hype
Robert V. White
Fellow, IEEE
President And Chief Engineer
Embedded Power Labs
Highlands Ranch, Colorado
[email protected]
©2010 Robert V. White All Rights Reserved

2. EMBEDDED POWER LABS
Presentation Overview
•What Is “Digital Power”?
•History
•What Changed
•Drivers For Adoption
•Market Predictions
•A Vision

3. EMBEDDED POWER LABS
What Is “Digital Power”?
•General Agreement On Concept
•Some Detailed Definitions
–Keith Curtis Of Microchip Technology Describes
Four Levels Of Integration
–Jeff Shepard Of The Darnell Group:
Five Levels Of Digital Power

4. EMBEDDED POWER LABS
Digital Power
Digital
Control
Switches
Change State
Based On
The Results
Of A Digital Process

5. EMBEDDED POWER LABS
Digital Power
Digital
Control
Actions Are
“Near Real Time”

6. EMBEDDED POWER LABS
Digital Power
Digital
Power
Management
Configure
Control
Monitor

7. EMBEDDED POWER LABS
Digital Power
Digital
Power
Management
Not
Real
Time

8. EMBEDDED POWER LABS
Digital Power
Digital
Control
Digital
Power
Management

9. EMBEDDED POWER LABS
Digital Power History
•US Patent 3504204
•Device To Regulate
Current From
Numerical Signals
•François Carrive
•Filed In France:
4 May 1965

10. EMBEDDED POWER LABS
Digital Control History: 1976

11. EMBEDDED POWER LABS
Digital Control History: 1976
US Patent 4095165
Victor Boros, Bell Labs
Filed: 18 Oct 1976

12. EMBEDDED POWER LABS
Digital Control History: 1976
Switching Regulator Control
Utilizing Digital Comparison Techniques
To Pulse Width Modulate
Conduction Through A Switching Device

13. EMBEDDED POWER LABS
Digital Control History: 1976
•Trey Burns And
Tom Wilson, Sr.
•Duke University
•Boost Converter
Operating At 100 Hz
•First Computer
Control Of A SMPS
PDP11/45
Photo: archive.computerhistory.org

14. EMBEDDED POWER LABS
Digital Control History
1965
Carrive
Dawn
Of The
Digital Era
1981: Serial Bus Communication
To A Power System
1976
Miller,
Burns
1981
Optimizing Converter Design
And Performance Using
Micro Controller
System Feedback And Control,
Brackner and Kharmarc,
Powercon 8

15. EMBEDDED POWER LABS
Digital Control History
1965
Carrive
Dawn
Of The
Digital Era
1976
Miller,
Burns
~2002
Digital
Power
Tsunami
Arrives

16. EMBEDDED POWER LABS
Digital Control History
1970
Carrive
1975
Burns
Bell
Labs
Era
1984
Henze
~2002
What
Changed
In 2002?

17. EMBEDDED POWER LABS
Digital Control History
1970
Carrive
1975
Burns
Bell
Labs
Era
1984
Henze
~20020.25 µ CMOS
Got Cheap!

18. EMBEDDED POWER LABS
Low Cost Silicon > New Thinking
•Previous:
–DSPs As Computation Engines
–High Resolution A/D Converters
–High Clock Speed Digital PWM Circuits
•New Approaches
–State Machines
–Look Up Tables
–Clever Digital PWMs

19. EMBEDDED POWER LABS
CoPEC Buffalo Switcher

20. EMBEDDED POWER LABS
The Hype

21. EMBEDDED POWER LABS
The Hype
•Power Electronics Technology Magazine
–2005-2007
–News Articles: 29
–Product Announcements: 18
–Feature Articles: 30
•Electronic Design Magazine
–Search “Digital Power”
–5673 Results

22. EMBEDDED POWER LABS
Everett Rogers Technology
Adoption Lifecycle
Innovators
2.5%
Early
Adopters
13.5%
Early
Majority
34%
Late
Majority
34%
Laggards
16%

23. EMBEDDED POWER LABS
Everett Rogers Technology
Adoption Lifecycle
Today We
Are Here

24. EMBEDDED POWER LABS
Everett Rogers Technology
Adoption Lifecycle
According To The
Darnell Group:
A Key Indicator Is
Recent Acquisitions

25. EMBEDDED POWER LABS
What’s
Driving
Digital?

26. EMBEDDED POWER LABS
Parts Count Reduction
Input
Output
Delay Time

27. EMBEDDED POWER LABS
Parts Count Reduction
GND
OUTPUT
RESET
TRIGGER
CONTROL
THRESHOL
D
DISCHARGE
VCC
8
U1 555
5
7
6
1
4
2
3
Output
VCC
(5 V)
Input
R1
1.8M
R2
10K
R3
10K
Q1
2N7002
Q2
2N7002
C1
100NF
C2
1NF
C3
100NF
C4
100NF
R4
7.15K
R5
7.15K
D2
1N4148
D1
1N4148
Parts Count: 14

28. EMBEDDED POWER LABS
Parts Count Reduction
SOT23-6
Parts Count: 2
C1
100NF
Output
VDD
(5 V)
GP2/
T0CKI/
FOSC4
GP1/
ICSPCLK
VDD
GP0/
ICSPDAT
VSS
GP3/
MCLR#
/VPP
1
P
I
C
1
0
F
2
0
0
2
3
4
5
6
Input

29. EMBEDDED POWER LABS
Centralized Control Architecture
Power
Block
Power
Block
Power
Block
Power
Block
Central
Controller

30. EMBEDDED POWER LABS
Efficiency Optimization
Vin VoutController
Minimum Duty Cycle
Maximum Efficiency

31. EMBEDDED POWER LABS
Efficiency Optimization
0
10
20
30
40
50
60
70
80
90
100
05101520253035404550556065707580859095100
E
ffi
c
i
e
n
c
y
(
%
)
Output Load (%)
Phase Shedding
Mode Shifting
Frequency Shifting
Smart System
Management

32. EMBEDDED POWER LABS
Self Tuning Control Loops
Vout
Reference
Duty
Cycle
Error
Processor
Compensator
Digital
PWM

33. EMBEDDED POWER LABS
System Identification Method
Vout
Reference
Duty
Cycle
Error
Processor
Compensator
Digital
PWM
S
Built In
Network Analyzer

34. EMBEDDED POWER LABS
Observer Method
Vout
Reference
Duty
Cycle
Inductor
Current
Error
Processor
Compensator
Digital
PWM
Observer

35. EMBEDDED POWER LABS
Energy Management
Server
Motherboard
BMC
Sub
Systems
IPMI
Power
Supply
Power
Supply
PMBus
W
S
-
M
A
N
Data Center
Applications
System Applications

36. EMBEDDED POWER LABS
Energy Management
Server
Motherboard
BMC
Sub
Systems
IPMI
Power
Supply
Power
Supply
PMBus
W
S
-
M
A
N
Data Center
Applications •Charge Back
•Track Energy
Consumption
•Thermal Mgt
•Protect Against
Hot Spots
•Circuit Mgt
• Protect
Against
Breaker
Overload
System Applications

37. EMBEDDED POWER LABS
Examples Of Current Products
Go See The
Exhibits!

38. EMBEDDED POWER LABS
Market Projections
•Petrov Group On Digital Power ICs:
–Market Has Entered Its High-growth Stage
–2009-2014 CAGR Of 34%
•Darnell Group On Digital Power ICs:
–5 × 10
9
Units In 2009 > 12.3 × 10
9
Units In 2014
–2009-2014 CAGR Of 20%
–2014: More Digital Control ICs Than
Digital Power Management ICs
–When Mainstream? 2015-2018
8.6X
Growth!6.9X
Growth!

39. EMBEDDED POWER LABS
Best
Tools
Wins

40. EMBEDDED POWER LABS
Vision: Universal DC-DC
•Programmable
Current Blocks
•Self
Tuning
Control
Loop
The Big Win?
Logistics Cost
$avings

41. EMBEDDED POWER LABS