1
LED?????????? Capacitor Design Solution on LED
Lighting
???LED??????????? The 4th LED General
Illumination Drive Technology Seminar October
21th, 2011 Shenzhen, China Tim Huang Product
Engineering Dept. ??????(??)???? Murata
Electronics Trading (Shenzhen) Co., Ltd.
Note ? The information of this material are
as of the date mentioned above. They are subject
to change without advance notice. If there are
any questions, please contact our sales
representatives or product engineers.
???????????????????????,?????????????,???????????
???????
2
??????? Lighting Element Road Map
?? ?? ??? INC ??? CFL ??LED W-LED
???? 1,200?? 8,000?? 50,000??
???? ?/??? ?4-6mg? ?/???
???? 1117lm/w 3586lm/w 80133lm/w
???? (?10????5????) 1095kwh 255.7kwh 109.7kwh
????????(?10????5????) 680kg 159kg 68kg
???? ???09???? ??2012??? ????2017??? ????? ???? ?????? ????
???? ?? ??-20?48??????? ?????????????????
Data Source ? ??
3
LED???????? LED Lighting Circuit Capacitor
Rectifier
DC OUT
SIMPLE DIODE BRIDGE or SWITCHING POWER SUPPLY
Y-CAPACITOR
LED
AC IN
DECOUPLING CAPACITOR
DRIVER IC
X-CAPACITOR
DIMMING SWITCH
DC SMOOTHING CAPACITOR SNNUBER CAPACITOR
4
LED????(???) LED Lighting Circuit (Isolation Type)
Recommended Murata P.N.
Application Chip Type Lead Type Metal Terminal Type Radial Lead Type
C1 X Capacitor GA3/Type GB(X2) AC250V(r.m.s.)
C2 Y Capacitor GA3/Type GF(Y2) AC250V(r.m.s.) DE1/Type KX(Y1) AC250V(r.m.s.)
C3 Pri-Sec Coupling GA3/Type GF(Y2) AC250V(r.m.s.) DE1/Type KX(Y1) AC250V(r.m.s.)
C4 C5 DC Smoothing EMI Filter GRM/X7R/DC6301000V ? KRM/X7R/DC6301000V RDE/X7R/DC630V (?1)
C4 C5 DC Smoothing EMI Filter GR3/X7T/DC250630V ? KR3/X7T/DC25630V RDE/X7T/DC250630V
C6 Snubber GRM/X7R/DC250630V DESDEH
C7 Snubber GRM/U2J/DC6301000V DESDEH
C8 DC Smoothing GRM/X7R/DC25100V ? KRM/X7R/DC25100V RDE/X7R/DC25100V
(?1) If the input voltage is AC277V, We recommend
RDE/DC1kV series (Under developing).
Mass Produced
Under Developing
5
LED????(????) LED Lighting Circuit (Non Isolation
Type)
Recommended Murata P.N.
Application Chip Type Lead Type Metal Terminal Type Radial Lead Type
C1 X Capacitor GA3/Type GB(X2) AC250V(r.m.s.)
C2 Y Capacitor GA3/Type GF(Y2) AC250V(r.m.s.) DE1/Type KX(Y1) AC250V(r.m.s.)
C4 C5 DC Smoothing EMI Filter GRM/X7R/DC6301000V ? KRM/X7R/DC6301000V RDE/X7R/DC630V (?1)
C4 C5 DC Smoothing EMI Filter GR3/X7T/DC250630V ? KR3/X7T/DC250630V RDE/X7T/DC250630V
C8 DC Smoothing GRM/X7R/DC25100V ? KRM/X7R/DC25100V RDE/X7R/DC25100V
(?1) If the input voltage is AC277V, We recommend
RDE/DC1kV series (Under developing).
Mass Produced
Under Developing
6
?? Agenda
1. AC Line Filter Design Solution
???????????? 2. Snubber Design Solution
?????????? 3. Smoothing Circuit Design Solution
?????????? 4. Replace E-CAP by Ceramic
Capacitor ??????????? 5. Murata Technical
Support in China ?????????
7
?? Agenda
1. AC Line Filter Design Solution
???????????? 2. Snubber Design Solution
?????????? 3. Smoothing Circuit Design Solution
?????????? 4. Replace E-CAP by Ceramic
Capacitor ??????????? 5. Murata Technical
Support in China ?????????
8
X??? X-Capacitor (C1)
Safety Standard Recognized Type GB ( IEC60384-14
/ Class X2 )
Outline Murata P.N. GA355R7GBK
Cap. Range 10nF 56nF Rated Volt.
AC250V(r.m.s.) Operating Temp. -55 125
deg.C Size 5.7 x 5.0mm Standard
Recognition Application Small sized AC
adapter Power Supply
Standard No. Class Rated Volt.
VDE IEC 60384-14 EN 60384-14 X2 AC250V(r.m.s.)
SEMKO IEC 60384-14 EN 60384-14 X2 AC250V(r.m.s.)
ESTI IEC 60384-14 EN 60384-14 X2 AC250V(r.m.s.)
Surface Mounting!! Small Sized!!
9
X??? X-Capacitor (C1)
AC250V (r. m. s.) Type ( Which Meet Japanese Law
)
Outline Murata P.N. GA2R7E2M
Cap. Range 0.01uF 0.1uF Rated
Volt. AC250V(r.m.s.) Operating Temp.
-55 125 deg.C Size 4.5 x 3.2mm
5.7 x 5.0mm Reference Standard GA2 series
obtains no safety approval. This series is
based on the standards of the electrical
appliance and material safety law of Japan.
GA2??????????????? ??????????????? Application
Small sized AC adapter Power Supply
Surface Mounting!! Small Sized!!
10
Y??? Y-Capacitor (C2,C3)
Safety Standard Recognized Type KX (IEC60384-14 /
Class Y1)
Murata P.N. DE1KXL1 Cap. Range
100 pF 4,700 pF Rated Volt.
AC250V(r.m.s.) Operating Temp. -25 125
deg.C Body Dia.(Max.) 8mm 12 mm
11
Y??? Y-Capacitor (C2,C3)
AC250V (r. m. s.) Type ( Which meet Japanese Law )
Murata P.N. GA2R7E2M Cap. Range
470 pF 4,700 pF Rated Volt.
AC250V(r.m.s.) Operating Temp. -55 125
deg.C Size 4.5 x 2.0mm 4.5 x 3.2mm
Reference Standard GA2 series obtains no safety
approval. This series is based on the standards
of the electrical appliance and material safety
law of Japan. GA2??????????????? ???????????????
12
?? Agenda
1. AC Line Filter Design Solution
???????????? 2. Snubber Design Solution
?????????? 3. Smoothing Circuit Design Solution
?????????? 4. Replace E-CAP by Ceramic
Capacitor ??????????? 5. Murata Technical
Support in China ?????????
13
??????? Switching Snubber Capacitor (C7)
GRM series / U2J Char. ( Higher Allowable
Voltage )
Feature Low Loss Type (High Allowable Voltage
Capacitor) RoHS Compliant product / Lead Free
product Soldering 1206 or less for
Flow and Reflow Soldering 1210 or over
for Reflow Soldering Only Line up DC250V 100
- 10000pF / 0805,1206 size DC630V 10 -
47000pF / 1206,1210,1812, 2220 size DC1kV
10 - 10000pF / 1206,1210,1812, 2220 size DC2kV
10 - 220pF / 1206,1210 size Application
Switching power supply, AC adapter, etc.
Allowable Voltage U2J v.s. X7R ex. DC630V/1000pF
14
??????? Switching Snubber Capacitor (C7)
GRM series / U2J Char.
(in mm)
15
???????? Diode Snubber Capacitor (C6)
GRM series / X7R Char.
16
?? Agenda
1. AC Line Filter Design Solution
???????????? 2. Snubber Design Solution
?????????? 3. Smoothing Circuit Design Solution
?????????? 4. Replace E-CAP by Ceramic
Capacitor ??????????? 5. Murata Technical
Support in China ?????????
17
??????? Smoothing Decoupling Capacitor (C4,C5)
GRM series / X7R Char.
18
????? - ??? GR3 Smoothing Capacitor - New
Product "GR3"
GR3 Series / X7T Char.
New Products
Background of develop We developed a special
ceramic material that assures both high
capacitance under bias and low-dielectric
loss. Feature Higher capacitance value under
DC-Bias condition compare with previous X7R
series. Improve the performance of
ripple-resistance compared with previous X7R
series. Reduce acoustic noise Reduce chip
cracks caused by board bending stress. Lineup DC2
50V 10-1000nF / 0805-2220 size DC450V 10- 560nF
/ 1608-2220 size DC630V 10- 270nF / 1608-2220
size Application DC smoothing EMI filter for
LED Lighting DC-DC converter for general
electronic equipment
Ex. LED Lighting (Isolation Type)
EMI Filter DC smoothing
19
????? - ??? GR3 Smoothing Capacitor - New
Product "GR3"
GR3 Series / X7T Char. - Low Acoustic Noise
New Products
Test ConditionDC150VAC1Vp-p/3kHz
Standard Type (X7R Char.) High Effective Type
(X7T Char.)
DC250V
About 10dB down!!
Sound Pressure Level dB
105 2220 size
154 1812 size
104 1210 size
473 1206 size
Capacitance/Size
???/????? 3mm
(Note) result of our evaluation board
20
????? - ??? GR3 Smoothing Capacitor - New
Product "GR3"
GR3 Series / X7T Char. - Higher Cap. In DC Bias
New Products
Test Item GRM55DR72E105KW01L(Standard Type)
GR355XD72E105KW05L(High Effective Capacitance
Type) Test Condition 1kHz, 1V(r.m.s.) DC-BIAS,
60 sec. Equipment HEWLETT PACKERD / HP4278A
n3
Better effective capacitance value
21
????? - ??? GR3 Smoothing Capacitor - New
Product "GR3"
GR3 Series / X7T Char. - Higher Ripple Current
New Products
Test Condition voltage form sine wave(30, 100,
250kHz)
30kHz 100kHz 250kHz
Rising Temp.-Current
Rising Temp.- Voltage
22
????? - ??? GR3 Smoothing Capacitor - New
Product "GR3"
GR3 Series / X7T Char. - Product Line
New Products
Rated Volt. Size LW(mm) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit)
Rated Volt. Size LW(mm) 103 153 223 333 473 683 104 154 224 334 474 684 105
DC250V (2E) 2.01.2
DC250V (2E) 3.21.6
DC250V (2E) 3.22.5
DC250V (2E) 4.53.2
DC250V (2E) 5.75.0
DC450V (2W) 3.21.6
DC450V (2W) 3.22.5
DC450V (2W) 4.53.2
DC450V (2W) 5.75.0 564
DC630V (2J) 3.21.6
DC630V (2J) 3.22.5
DC630V (2J) 4.53.2
DC630V (2J) 5.75.0 274
Mass Production
23
????? - ??? KRM Smoothing Capacitor - New
Product "KRM"
Metal Terminal Capacitor / KRM Series
Fig. 2 Inner Structure
Fig. 1 Appearance ( Double Chip )
Feature Unique Terminal design to reduce
acoustic noise problem efficiently High
reliability for thermal mechanical stress
High capacitance value by stacking two MLCC
High Reliability!!Reduce Acoustic Noise!! High
Capacitance!!
24
????? - ??? KRM Smoothing Capacitor - New
Product "KRM"
Metal Terminal Capacitor / KRM Series
Chip Qty Appearance Chip Size LWT mm Dimensions mm Dimensions mm Dimensions mm
Chip Qty Appearance Chip Size LWT mm L W T
Single Chip 5.75.02.0 6.10.4 5.30.2 2.80.2
Single Chip 5.75.02.7 6.10.4 5.30.2 3.70.2
Double Chip 5.75.02.0 6.10.4 5.30.2 4.80.2
Double Chip 5.75.02.7 6.10.4 5.30.2 6.40.3
L
W
T
L
W
T
25
????? - ??? KRM Smoothing Capacitor - New
Product "KRM"
Metal Terminal Capacitor / KRM Series
Rated Volt. Size Code T.C. Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit)
Rated Volt. Size Code T.C. 104 224 474 105 225 475 106 226 476
DC25V 2220 X7R (K) (M)
DC50V 2220 X7R (K) (M)
DC63V 2220 X7R (K) (M)
DC100V 2220 X7R 475(K) 106(M)
DC100V 2220 X7R 685(K) 156(M)
DC250V 2220 X7T (K) (M)
DC450V 2220 X7T 474(K) 105(M)
DC450V 2220 X7T 564(K) 125(M)
DC630V 2220 X7T 224(K) 474(M)
DC630V 2220 X7T 274(K) 564(M)
(K)Single Chip (M)Double Chip
?Standard type (KRM series)? Feature High
reliability Reduce acoustic noise M.P.
Schedule DC2563V OK DC100V OK
(Sample Available)
?Large Capacitance and High allowable ripple
current (KR3 series) ? Feature Higher DC Bias
Char. of cap. High Reliability Reduce
Acoustic Noise M.P. Schedule DC250 630V
2011Q4 (Sample Available)
Traditional Ceramic Material (X7R Char) New
Ceramic material (X7T Char.)
As of August, 2011
(Note) Above schedule may slightly change due to
status of development.
26
????? ??? Decoupling Capacitor (C8) Road Map
GRM series / X5R Char.
Under Development
Mass Production
NEW
27
????? ??? Decoupling Capacitor (C8) Road Map
GRM series / X6S (X6T) Char.
Mass Production
NEW
28
????? ??? Decoupling Capacitor (C8) Road Map
GRM series / X7R (X7U/X7T/X7U) Char.
Mass Production
NEW
NEW
29
????? ??? Decoupling Capacitor (C8) Road Map
GRM series / X7R (X7U/X7T/X7U) Char.
WV Cap. Size Chip T (mm) TC Cap.Tol. Murata Global P/N Durability(Rated Volt,) Mass Production
16 1uF 0603 0.8/-0.1 X7R /-10 GRM188R71C105KA12D 150 M.P.
16 1uF 0805 0.6/-0.1 X7T /-10 GRM216D71C105KA12D 100 M.P.
16 2.2uF 0805 0.85/-0.1 X7R /-10 GRM219R71C225KE15D 150 M.P. (NEW)
16 2.2uF 0805 1.25/-0.1 X7R /-10 GRM21BR71C225KA12L 150 M.P.
16 4.7uF 0805 1.25/-0.15 X7R /-10 GRM21BR71C475KA73L 150 M.P.
16 4.7uF 1206 0.85/-0.1 X7T /-10 GRM319D71C475KA12D 100 M.P.
16 10uF 1206 1.6/-0.2 X7R /-10 GRM31CR71C106KAC7L 150 M.P.
16 22uF 1210 2.5/-0.2 X7R /-10 GRM32ER71C226KEA8L 150 M.P.
25 1uF 0603 0.8/-0.1 X7R /-10 GRM188R71E105KA12D 150 M.P.
25 1uF 0805 0.85/-0.1 X7R /-10 GRM219R71E105KA88D 200 M.P.
25 2.2uF 0805 1.25/-0.15 X7R /-10 GRM21BR71E225KA73L 150 M.P.
25 4.7uF 1206 1.6/-0.2 X7R /-10 GRM31CR71E475KA88L 200 M.P.
25 10uF 1206 1.6/-0.2 X7R /-10 GRM31CR71E106KA12L 150 M.P.
25 10uF 1210 2.0/-0.2 X7R /-10 GRM32DR71E106KA12L 200 M.P.
25 22uF 1210 2.5/-0.2 X7R /-10 GRM32ER71E226KE15L 150 M.P.
50 1uF 0805 1.25/-0.1 X7R /-10 GRM21BR71H105KA12L 150 M.P.
50 1uF 1206 1.15/-0.1 X7R /-10 GRM31MR71H105KA88L 200 M.P.
50 2.2uF 1206 1.6/-0.2 X7R /-10 GRM31CR71H225KA88L 200 M.P.
50 4.7uF 1206 1.6/-0.2 X7R /-10 GRM31CR71H475KA12L 150 M.P.
50 4.7uF 1210 2.5/-0.2 X7R /-10 GRM32ER71H475KA88L 200 M.P.
50 10uF 1210 2.5/-0.2 X7R /-10 GRM32ER71H106KA12L 150 M.P. (NEW)
100 1uF 1206 1.6/-0.2 X7R /-10 GRM31CR72A105KA01L 200 M.P.
100 2.2uF 1206 1.6/-0.3 X7R /-10 GRM31CR72A225KA73L 150 M.P. (NEW)
100 2.2uF 1210 2.5/-0.2 X7R /-10 GRM32ER72A225KA35L 200 M.P.
250 1uF 2220 2 X7R /-10 GRM55DR72E105KW01L 200 M.P.
30
??????? ??? Smoothing Capacitor (C8) New Products
KRM Series
W.V.(DC) Chip EIA Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit)
W.V.(DC) Chip EIA 474 105 225 475 106 226 476 107
25V 2220
63V 2220
100V 2220
685
156
RDE Series
W.V.(DC) Chip EIA Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit) Capacitance (Three-digit)
W.V.(DC) Chip EIA 474 105 225 475 106 226 476 107
25V 12
50V 12
100V 12
1206
1210w
1210
1206
1210w
1210
1206
1210
1210w
(Note) w) Double MLCC inside.
M.P. Schedule December, 2011.
31
?? Agenda
1. AC Line Filter Design Solution
???????????? 2. Snubber Design Solution
?????????? 3. Smoothing Circuit Design Solution
?????????? 4. Replace E-CAP by Ceramic
Capacitor ??????????? 5. Murata Technical
Support in China ?????????
32
MLCC? ??????? (ex. 6.3Vd.c.) Downsizing
Solution by MLCC (ex. 6.3Vd.c.)
33
MLCC? ??????? (ex. 50Vd.c.) Downsizing
Solution by MLCC (ex. 50Vd.c.)
34
MLCC? ??????? Long Life Time Solution by MLCC

Al (Polymer) Electrolytic Cap. (??????)?????? Ceramic Capacitor?????
Exist Life-Time Period???? No Life Time Period????
Al (Polymer) Electrolytic Capacitor is chemical capacitor which the capacitance value make use of the chemical change. Based on the Electrolytic liquid/solid decrease by operation hours, the capacitance value will be decreased and tand will be increased, step by step. ??????????,????????????????????????????????,???????????????(tand)?????? Ceramic Capacitor is made by fine electronics ceramic (porcelain).Except for heavy-duty use like over specification, etc., there is no limitation for life time. ????????????????,???????????????????,??????????

35
MLCC? ???????? Noise Absorption Solution by
MLCC
MLCC 1210/22µF/16V E-Cap. (Al) 22µF/16V MLCC
1206/22µF/16V E-Cap. (Al) 22µF/6.3V MLCC
0805/22µF/6.3V E-Cap. (Polymer)
22µF/6.3V E-Cap. (Al) 22µF/25V
In high frequency range, MLCC has lower
Impedance than E-Cap. (Al or Polymer). ???????????
??????.
36
MLCC? ???????? Noise Absorption Solution by
MLCC
MLCC 1210/100µF/6.3V E-Cap. (Al) 100µF/6.3V MLCC
1206/100µF/6.3V E-Cap. (Polymer1) 100µF/6.3V MLCC
1206/47µF/4V E-Cap. (Polymer2) 100µF/6.3V MLCC
0805/22µF/6.3V
In high frequency range, it is possible to apply
1/2 or 1/4 lower capacitance MLCC to replace of
E-Cap. (Al or Polymer). ????,?????1/21/4???MLCC??
???????
37
MLCC? ???????? Noise Absorption Solution by
MLCC
lt Ripple Voltage of Output gt ?????????
Freq of input
500KHz
MLCC has excellent high frequency noise
absorption performance compared with Ta/AL
Capacitor. ?????????/??????????????????
38
MLCC? ????????? Temp. Reliability Solution by
MLCC (22uF)
MLCC (Ceramic Capacitor) ???????
Al Electrolytic Capacitor ??????
Impedance ESR O
Impedance ESR O
-40?-10? 25? 60? 85?
-40?-10? 25? 60? 85?
Frequency MHz
Frequency MHz
The ESR of Al Capacitor is not stable in low
temperature. MLCC has stable ESR. ??????ESR???????
?????MLCC?????ESR???
39
MLCC? ????????? Temp. Reliability Solution by
MLCC (100uF)
Al Electrolytic Capacitor ??????
MLCC (Ceramic Capacitor) ???????
Impedance ESR O
Impedance ESR O
-40?-10? 25? 60? 85?
-40?-10? 25? 60? 85?
Frequency MHz
Frequency MHz
The ESR of Al Capacitor is not stable in low
temperature. MLCC has stable ESR. ??????ESR???????
?????MLCC?????ESR???
40
?? Agenda
1. AC Line Filter Design Solution
???????????? 2. Snubber Design Solution
?????????? 3. Smoothing Circuit Design Solution
?????????? 4. Replace E-CAP by Ceramic
Capacitor ??????????? 5. Murata Technical
Support in China ?????????
41
?? (?? )?????? Murata (China) Investment Co.,
Ltd.
http//www.murata-china.com
41
42
???,??????? Sim Surfing Capacitor, Inductor
Design Tool Sim Surfing
42
43
???????? Murata Web Site Data Library
? S parameters S ?? S parameters of Capacitors,
Chip Coils ( Inductors ) and Chip Ferrite
Beads. Smith charts and frequencies
characteristics are also be shown. ???????????????
??S??,????????????????????? ?http//www.murata.co.
jp/sparameter/index.html ? Cadence SPECCTRA
Quest Data Library ??? The data for Cadence
SPECCTRAQuest which is for design and analysis of
high-speed digital circuit. Cadence SPECCTRAQuest
???????????????? ?http//www.murata.com/designlib/
sqlib/index.html ? Ansoft Designer Data
Library ??? The data for Ansoft DesignerTM,
which is a electromagnetically charged EDA
software. Ansoft Designer ??????EDA?? ?http//www.
murata.com/designlib/ansoft/index.html ? AWR
Microwave Office Data Library ??? The data
for AWR Microwave OfficeTM, which is a high
frequency electronic design automation software
of Applied Wave Research, Inc. AWR Microwave
OfficeTM ?AWR??????????????? ?http//www.murata.co
m/designlib/awr/index.html ? Agilent ADS
Data Library ??? The data for Agilent ADS, which
is EDA software for high-frequency
system. Agilent ADS ??????EDA?? ?http//www.murata
.com/designlib/agilent/index.html
TM
TM
TM
The SPECCTRAQuest is a trademark of Cadence
Design Systems,Inc. The Ansoft Designer is a
trademark of Ansoft Corporation. The Microwave
Office is a trademark of Applied Wave
Research,Inc.
43
44
??????????(??) MURATA EMC-LAB (Shanghai, China)
2010?7????????????????
??????? ????????(????)(????) ???????(????)(????)
??????(?????????) ????(???) ??????(?????) ??????(?
??)
45
Thank you for your attention ????
???? Sales Office
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mctsales_at_murata.co.jp
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???? Head Office
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45