Infineon EVAL_600W_12V_LLC_C7 Product information
- Type
- Product information
Infineon EVAL_600W_12V_LLC_C7 evaluation board showcases a Half-Bridge LLC stage of a server SMPS, targeting 80+ Titanium standard efficiency requirements. It combines Infineon's latest technologies, including the CoolMOS™ C7 600 V power MOSFET, OptiMOS™ low voltage power MOSFET, and Infineon's LLC controller ICE2HS01G. With its high efficiency, reaching 95% at 10% load and a peak efficiency of 97.8% at 50% load, it is an excellent choice for high-power computing applications.
Infineon EVAL_600W_12V_LLC_C7 evaluation board showcases a Half-Bridge LLC stage of a server SMPS, targeting 80+ Titanium standard efficiency requirements. It combines Infineon's latest technologies, including the CoolMOS™ C7 600 V power MOSFET, OptiMOS™ low voltage power MOSFET, and Infineon's LLC controller ICE2HS01G. With its high efficiency, reaching 95% at 10% load and a peak efficiency of 97.8% at 50% load, it is an excellent choice for high-power computing applications.
600 W Half-Bridge LLC
evaluation board
EVAL_600W_LLC_12V_C7_D
digital & analog
Table of contents
General description
Efficiency results
Design concept
1
2
3
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2015-10-12 Copyright © Infineon Technologies AG 2015. All rights reserved.
General
Description:
The “EVAL_600W_LLC_12V_C7“ - evaluation board shows how to design a Half-Bridge LLC
stage of a server SMPS with the target to meet 80+ Titanium standard efficiency requirements. On
this purpose there has been applied latest CoolMOS™ technology IPP60R180C7 600 V power
MOSFET on the primary side and OptiMOS™ low voltage power MOSFET in
SuperSO8 BSC010N04LS in the synchronous rectification secondary stage, in combination with QR
CoolSET™ ICE2QR2280Z, hi-low side driver 2EDL05N06PF, low-side Gate Driver 2EDN7524F and
a LLC Controller ICE2HS01G for the analog or XMC4200 in the digital version.
Summary of features:
›Output voltage: 12 V
›Output current: 50 A
›Efficiency @ 10% load > 95%
›Peak efficiency @ 50% load > 97,8%
The following variants are available:
›600W 12V LLC analog version with CoolMOS™ C7, IPP60R180C7, EVAL_600W_LLC_12V_C7
›600W 12V LLC digital version with CoolMOS™ C7, IPP60R180C7, EVAL_600W_LLC_12V_C7_D
3
2015-10-12 Copyright © Infineon Technologies AG 2015. All rights reserved.
Example of system understanding: Infineon
demo solution for Titanium HV DC/DC stage
Half
-Bridge LLC with
synchronous rectification in
center
tap configuration
V
in
350
-410 VDC
V
in_nom
380 V
DC
V
out_nom
12 V
DC
I
out
50 A
P
o
600 W
f
res=f0
157 kHz
f
min
90 kHz
f
max
210 kHz
Transformer
turns ratio
16:1
C
r
66
nF
L
r
15.5
uH
L
m
195
uH
SR MOSFETs
OptiMOSTM BSC010N04LS
New generation
›Best FOM RDS(on) x Qg
›Best FOM RDS(on) x Qoss
Primary HV MOSFETs
CoolMOSTM IPP60R180C7
Reduced gate charge (Qg)
›Reduced Eoff
›High body diode ruggedness
Resonant inductor
RM12 core
HB Gate Drive IC
2EDL05N06PF
Non isolated LS Gate Drive
2EDN7524F
LLC controller
Digital XMC4200 / Analog ICE2HS01G
Bias QR Flyback
controller
ICE2QR2280Z
Transformer
PQ35/35 core
SR MOSFETs
BSC010N04LS
4
2015-10-12 Copyright © Infineon Technologies AG 2015. All rights reserved.
Control board analog & digital
Two possible solution to control Infineon`s 600 W LLC evaluation board
Analog - ICE2HS01G
›Resonant mode controller for Half-Bridge LLC
resonant converter with synchronous
rectification drives
›Driving signal for synchronous rectification
which support full operation of Half-Bridge LLC
resonant converter
›20-pin DSO package
›30 kHz to 1MHz switching frequency
›50% duty cycle for both primary and secondary
gate drives
›Adjustable dead time with high accuracy
Digital - XMC4200-Q48K256 AB
›ARM® Cortex®-M4, 80 MHz, incl. single cycle
DSP MAC and floating point unit (FPU)
›8-channel DMA + dedicated DMA for USB
›USB 2.0 full-speed device
›CPU Frequency: 80 MHz
›eFlash: 256 kB including hardware ECC
›40 kB SRAM
›Package: PG-LQFP-48
5
2015-10-12 Copyright © Infineon Technologies AG 2015. All rights reserved.
PCB boards layout: main power board and
control and bias daughter boards
Power density >20 W/inch3
Controller board Bias board
6
2015-10-12 Copyright © Infineon Technologies AG 2015. All rights reserved.
Main power board schematic (digital)
7
2015-10-12 Copyright © Infineon Technologies AG 2015. All rights reserved.
Bias board schematic
8
2015-10-12 Copyright © Infineon Technologies AG 2015. All rights reserved.
Analog control board schematic
9
2015-10-12 Copyright © Infineon Technologies AG 2015. All rights reserved.
Digital control board schematic
Digital controller
XMC4200-
Q48K256 AB
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2015-10-12 Copyright © Infineon Technologies AG 2015. All rights reserved.
PCB structure
11
2015-10-12 Copyright © Infineon Technologies AG 2015. All rights reserved.
BOM (rework from digital to analog)
C3 R19 & R20 R36
Part
Value
Pcs
Tolerance
Device
Package
Description
Assembling
info
Supplier
C3
470n/50V
1
C
-EU_C0805
C0805
CAPACITOR
Replace
10n/50V with 470n/50V
R19
4K3
1
±
1%
R
-EU_R0805
R0805
RESISTOR
Replace
330R with 4K3
R20
4K3
1
±
1%
R
-EU_R0805
R0805
RESISTOR
Replace
330R with 4K3
R36
56R
1
±
1%
R
-EU_R0805
R0805
RESISTOR
Assemble
n.a. with 56R
IC1
Board
1
Board
PCB
Analog_Controlcard
IFX
12
2015-10-12 Copyright © Infineon Technologies AG 2015. All rights reserved.
Table of contents
General description
Efficiency results
Design concept
I
II
III
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2015-10-12 Copyright © Infineon Technologies AG 2015. All rights reserved.
Automated efficiency measurement
0,9
0,905
0,91
0,915
0,92
0,925
0,93
0,935
0,94
0,945
0,95
0,955
0,96
0,965
0,97
0,975
0,98
0,985
0,99
5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49
Efficiency
IOUT [A]
C7 180mOhm
Highest Efficiency standard in
Computing applications
(HV DC/DC stage)
97.8% peak efficiency!
Combination of converter design
(resonant tank, transformer) and
proper HV device election
Proper selection of SR LV device and
secondary side
0.1% Total accuracy
›Output voltage: 12 VDC
›Output current: 50 A
›Efficiency: > 95% @ 10%
load, Vin = 380 VDC
›Efficiency max: 97.8%, Vin
= 380 VDC
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2015-10-12 Copyright © Infineon Technologies AG 2015. All rights reserved.
Table of contents
General description
Efficiency results
Design concept
1
2
3
15
2015-10-12 Copyright © Infineon Technologies AG 2015. All rights reserved.
Design procedure: input data
2
),,( max_
min_
minmin in
o
xVVn
FmQKM
2
),,( min_
max_
maxmax in
o
xVVn
FmQKM
nomout
nomin
V
V
n_
_
2
16
2015-10-12 Copyright © Infineon Technologies AG 2015. All rights reserved.
Resonant tank components and related
resonant frequencies
›n=Vin_nom/(2xVo)=380/(2*12)≈16
›Lm=195µH
›Lr=15.5µH
›Ln=Lm/Lr=12.5
›Cr=66nF
kHz
CrLr
fo 157
21
kHz
CrLmLr
fp 7.42
)(2 1
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2015-10-12 Copyright © Infineon Technologies AG 2015. All rights reserved.
Gain curves
0,6
0,7
0,8
0,9
1
1,1
1,2
gain
frequency [Hz]
DC - gain curve (600W LLC hardware revision C7)
5 A
15
A
25
A
2
max_
min_
min in
o
VVn
M
2
min_
max_
max in
o
VVn
M
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2015-10-12 Copyright © Infineon Technologies AG 2015. All rights reserved.
Energy related calculations
(Ref. IPP60R180C7 device parameters)
A
Lf Vn
msw
o
ag 672.0
2
22
Imax_
min_m
JILLEn magrmres
1.95²)(
2
1min_min_
JVerCoEn DScap
9²))(2(
2
1max_max_
max_min_ capres EnEn
19
2015-10-12 Copyright © Infineon Technologies AG 2015. All rights reserved.
Qoss, Imag,pk, tdead,min, tecs relationship
ICHB
Im,pk
IQ2
Im,pk
VHB
VBULK
Vecsdeadpkecspk
t
CQosstttdttI
dead
HB ,2)(II
2
1
)( 400@min,m,m,
0
min,
)1(I)( m,2ecs
pkQtt
tI
ecstt
0)(2tIQ
ecstt
tecs tdead,min
pk
Vossecs
dead Qt
tm,
400@,
min, I 2
2
1
),,( ,, gd
ds
thgstotgecs C
C
VRft
20
2015-10-12 Copyright © Infineon Technologies AG 2015. All rights reserved.
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Infineon EVAL_600W_12V_LLC_C7 Product information
- Type
- Product information
Infineon EVAL_600W_12V_LLC_C7 evaluation board showcases a Half-Bridge LLC stage of a server SMPS, targeting 80+ Titanium standard efficiency requirements. It combines Infineon's latest technologies, including the CoolMOS™ C7 600 V power MOSFET, OptiMOS™ low voltage power MOSFET, and Infineon's LLC controller ICE2HS01G. With its high efficiency, reaching 95% at 10% load and a peak efficiency of 97.8% at 50% load, it is an excellent choice for high-power computing applications.
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