1. Champion Clean Technology
SLS +
ZVS-Like PFC

2. +12 V Single Output for 300W power
Champion Clean Tech Product Performances

3. Calculated Efficiency Champion Clean Tech Product Performances
Multiple Outputs for 300W
Champion Clean Tech Product Performances

4. 90 92 90 Hold-Up Time ~ 24mS with 220uF
SLS CM6901/1A +
ZVS-Like PFC CM6565
Demonstration
300 W +12V, -12V, +12(AUX), Fan
Single Output Power Supply
Hold-Up Time ~ 24mS
with 220uF
Fan is not a necessary item for Power Supply!
No Load Consumption ~ 200mW!

5. All Applications for 90+ efficiency
SRC/LLC + SR (SLS) CM6901/1A
fits
All Applications for 90+ efficiency
Universal Topology for all applications:
Desk Top
LCD TV
Server
AC Adapter
Consumer Electronics
From 150W to 1500W …

6. SLS (SRC/LLC + SR) Summary fr1 CM6900/1/1A PWM Region 296V 380V LLC
Optimal Design is SLS
Operating Frequency Range
from ~ 25Khz to ~ 150Khz
Full Load to Light Load (Even no Load)
Vin from 260V to 380V
SLS (SRC/LLC + SR)
Summary
fr1
Positive feedback region!
FM Modulation Region
50Khz
100Khz
CM6900/1/1A PWM Region
@ Full Load & Vin = 380V
SR duty cycle ~ 50%
Half Bridge/Full Bridge Gate duty cycle ~ 50%
ZVS and ZCS
fsw ~ 52Khz
@ Light Load & Vin = 380V
fsw stops ~ 100Khz by Light Load PWMing (for all switches!)
ZVS or about ZVS
fsw ~ 100Khz
@ Hold-Up Time, Vin drops ~ 296V
SR duty cycle 50% reduces when fsw is below fr1 while Primary Side Gate Drive remains ~ 50% (SR Ideal Diode PWMing for SR Switches only!)
ZVS
30Khz < fsw < 80Khz
296V
380V
Why SLS? Why not LLC? Why not fsw = fr1?
Ask this question: “If it is ZCS, how it ZVS?” It is an important question! I2 x R is more important than f x C x Full Load
Hold-Up Time is longer and 380V Bulk Cap is smaller Time Domain AC Analysis should be used.
Transformer is smaller. Lm can be 2 mH.
Line Ripple can be reduced.
Output Ripple Current can reduced.
LLC
SRC

7. Frequency Analysis Errors Actual Possible Hold-Up Time
and
Actual Possible Hold-Up Time
fr1
Modulation Region
Actual FM
Modulation Region FM
Gain is 380/260 = 1.461
Gain is 380/301 = 1.259
260V
380V
380V
301V
Hold-Up Time ~ 24mS
With 300W

8. It reduces Transformer Size
SRC/LLC + SR (SLS)
vs.
LLC
It reduces Transformer Size
Transformer size is much smaller and it does not need Litz Wire
FM frequency range is reduced by patented 2 PWMing modes
SR works both SRC region and LLC region
SR behaves like an ideal diode at LLC region
4. Optimal-Balanced-Total Efficiency ~ 90% supported by CMC patented topology (90, 92, 90)
Hold up time (20mS) with Reasonable Bulk Cap value supported by CMC patented topology …

9. SIZE It all relates to Clean Tech and Efficiency! SRC/LLC + SR (SLS)
Smaller Transformer
and
No Litz Wire
SLS
No Litz Wire
Optimal Frequency Range
between 40Khz to 100Khz
for full load to light load
Vin from 280V to 390V
LLC
Needs Litz Wire
Lm goes down!
Frequency forced up!
SLS 200W
LLC 200W
That is WHY!
SRC 150W
LLC 150W
Lm = 4mH
Lm = 1mH
LLC 300W
SRC 300W
Lm = 600uH
Size Matters!
Power Density
Frequency Range
SIZE
matters!
Lm = 4mH
It all relates to
Clean Tech and Efficiency!
LLC 600W
SRC 600W
Lm = 4mH
Lm = 300uH
LLC 1200W
SRC 1200W
Lm = 4mH
Lm = 150uH

10. 96+ SLS (SRC/ LLC + SR) CM6901/1A Transformer can handle more Power
Lm ↑ and Ilm ↓
Transformer can handle more Power

11. Positive feedback region!
Problem with
Pure SRC
Cannot Cross
fr1
Size Matters!
Power Density
Frequency Range
fr1
Positive feedback region!
Pure SRC
Operating Region
FM Modulation Region
ŋ, efficiency
light load
full load
Question here. Can we
Narrow the FM Modulation Range?
Cross fr1 to work both sides with SR?

12. It reduces the frequency range
Light Load PWMing
It reduces the frequency range
Size Matters!
Power Density
Frequency Range
SIZE
matters!
FM Modulation Region
Stop the frequency going up by
Light Load
Good Efficiency
FM Modulation Region
Without Light Load
Bad Efficiency
fr1
Positive feedback region!
CM6900/1/1A PWM Region
Pure SRC
Operating Region
Frequency Region can be reduced and Efficiency goes up at light load!

13. Hold-Up Time vs. Efficiency Positive feedback region!
Trade Off
@ full Load
Gain is 380/202.9 = 1.872
Good Hold-Up Time
But
Bad Efficiency
FM Modulation Region
380V
202.9V
Bad Hold-Up Time
But
Good Efficiency
FM Modulation Region
380V
326V
Gain is 380/326 = 1.165
fr1
Positive feedback region!
Pure SRC
Operating Region
We want both
High Efficiency
&
Good Hold-Up Time
But How??

14. CMC patented topology fr1 fr1 CM6901/1A: (Patented)
Without Increasing Transformer Size
Work both SRC + LLC + SR (SLS)
Hold up time (20mS)
supported by
CMC patented topology
CM6901/1A: (Patented)
Working both SRC and LLC region with SR reduces Bulk Cap and increases Hold-Up Time
fr1
fr1
SRC
Operating Region
LLC
Operating Region
LLC
Operating Region
SRC
FM Modulation Region

15. 96+ SLS (SRC/ LLC + SR) CM6901/1A Transformer can handle more Power
Lm ↑ and Ilm ↓
Transformer can handle more Power
SLS:
SR Ideal Diode PWMing
Open Loop
No Sensing Resistor
As the result,
Higher Efficiency!

16. To avoid saturation, fsw(LLC) > = 2 x fsw(SLS)
SLS (SRC/LLC + SR)
96+ SLS (SRC/LLC+ SR) CM6901/1A
LLC
Lm = 600uH
LLC FM Modulation Region
Lm = 1000uH
fr1 = 139Khz
SLS
SRC + LLC + SR FM
Modulation Region
fr1 = 43.93Khz
CM6901/1A is a SLS (SRC/LLC + SR) controller (patented)
CM6901/1A can handle more power due to larger Lm
CM6901/1A has the higher efficiency:
Lm is larger so frequency is much lower!
CM6900/1/1A has SR so efficiency goes up more!
SRC 200W
LLC 200W
That is WHY!
To avoid saturation,
fsw(LLC) > = 2 x fsw(SLS)

17. Loop Gain
0.5
e.g.
100K
e.g.
There is an output pole which is formed by 1/(2 x πx Rload x Cout).
It does not show at Loop Gain.
GMfeao x ZGMfeao’s Zero ~ 10/(2 x πx Rload x Cout)

18. Design Resonant Tank Key Parameters
fsw ~ 1.2 x fr1
fr1 ~ 42Khz for ATX Power Supply Size
Q=(1/R) x (Lr/Cr)**0.5 for fr1 only
0.3 < Q < 0.5 (Optimal Design)
K = Lm/Lr1
K > 10 (Optimal Design)
ζ=1/(2 x Q)
fr1=1/(2 x πx Lr x Cr)
Rload primary = Rload secondary x n2 x 8 /π2
Imax = 2Vi/(πx Rlp)
Vmax = 2Vi x Q/Pi

19. SR Ideal Diode PWMing Light Load PWMing
SLS
CM6901/1A
FM Modulation
SR Ideal Diode PWMing
Light Load PWMing
SLS
CM6901/1A Design Tool

20. Optimal-Balanced-Total Efficiency: supported by CMC patented topology
supported by CMC patented topology
CM6901/1A: (Patented SLS Controller)
FM + 2 PWMings:
SR Ideal Diode PWMing (for SR Switches only!)
Light Load PWMing (for all Switches)
Synchronous Rectification (SR) in both SRC/LLC regions
ZVS-Like PFC: CM6565/CM6502/CM6802SB75 (Patented)
Interleaved PFC:
2 phases drop to 1 phase, PFCmaster operating at Light Load
ZVS-Like: 380V drops to 342V at Light Load

21. Higher Efficiency without additional cost Pin to Pin Compatible with…
CM6568/CM6808 Family
16 Pin
ZVS-Like
PFC
35 V BiCMOS Process
Coming Very Soon
More Goodies ……
Turbo Speed PFC
Higher Efficiency without additional cost
CM6568/CM6808 Secrets
Pin to Pin Compatible with…
CM6568S to replace CM6502S
CM6808S to replace CM6802S

22. ZVS-Like Interleaved PFC
Champion
ZVS-Like PFCs
for
Highest Efficiency
High Power
High Efficiency
Total 90+
CM6901/1A
SRC/LLC + SR (SLS)
CM6565CRM
ZVS-Like Interleaved PFC
Highest Efficiency
Total 90+
CM6901/1A
SRC/LLC + SR (SLS)
CM6502S
ZVS-Like single PFC
High Power
&
High Efficiency
Total 90+
CM6901/1A
SRC/LLC + SR (SLS)
CM6568
ZVS-Like Single PFC
Cost Effective
&
High Efficiency
Cost Effective
High Efficiency
CM6568
Q2 2009

23. Champion Clean Technology = SLS + ZVS-Like PFC Everyone's 90+
Summary
Champion Clean Tech = SLS + ZVS-Like PFC = Everyone’s 90+
CM6901/1A + ZVS-Like PFC can meet EPA 80+ Gold/Climate Saver 4 : SLS + ZVS-Like PFC
One Universal Topology (SLS + ZVS-Like PFC) fits for all: Server, AC Adapter, LCD TV, Desk Top, and Consumer Electronics
Size Smaller: SLS: Smaller Transformer with lower fsw and higher ŋ
The highest Efficiency :
Full Load Efficiency:
SLS: CM6901/1A (SR Ideal Diode PWMing) Enables SR Working At LLC Region
SLS: With full load, it can cross fr1 to LLC and Efficiency goes Vin = 390V!
Light Load Efficiency:
Light Load PWMing Stops frequency going up
fsw < 100Khz even at no load
Champion ZVS-Like PFC
W Power Supply Results
Hold-Up ~ 24 mS with 300W ATX Power Supply Design
Champion
Clean Technology =
SLS + ZVS-Like PFC
Everyone's 90+
Champion
Clean Technology
is more than
Green