FAN6920MRMY [ONSEMI]
mWSaver™ CrCM PFC + QR PWM 组合控制器，欠压保护控制器;
| 型号： | FAN6920MRMY |
| 厂家： | 
ONSEMI |
| 描述： | mWSaver™ CrCM PFC + QR PWM 组合控制器，欠压保护控制器 控制器 开关 功率因数校正 光电二极管 |
| 文件： | 总21页 (文件大小：1232K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DATA SHEET
www.onsemi.cn
Თ✈ꢀmWSaverꢀ ᑠᤏŔ↖Ᏸჯ
ꢀꢀᰁჯꢀPFCꢀ ꢁꢂᛠᔏꢁἡᰁჯ
PWMꢀᖇꢃꢄ
SOIC−16, 150 mils
CASE 751BG−01
FAN6920MR
ᛄ
MARKING DIAGRAM
ꢀႆꢁᏰŔ FAN6920MRꢀꢂ
ר
ꢁѿ╧ࣀ
ᝐᨁᵃ (PFC)ꢀᖇЖࡈ
٬Φ
ꢃᔏ PWMꢀᖇЖࡈ
。ꢁᏰᖰŻሇ×ᶴꢀŔꢄꢅ，ℝĮꢁ ᮸̣ÖŔᝐƾ。
ZXYTT
FAN6920FO
TPM
ෙn PFC，FAN6920MRꢀş✈ַᖇො៖ᑠᤏ᥅ᖰŻᛓDŽ
ἡᩣϚꢀի，ᑇጜ⌖Ŕѿ╧
ࣀ
ᝐᨁᵃ。ύǿϻថŔ THDꢀøӶ ࡈ
，FAN6920MRꢀ
ί᪗⇆Ŕᩣͅꢀἡǯ，®ᖰꢀ THDꢀሇ்。
FAN6920 = Specific Device Code
ෙn PWM，FAN6920MRꢀᖰŻπҝѿ்᥅ᄚꢀ⁰
ߋ
যሇ ்：ᜇၵ᪠Ἣ、ൂᰁჯ᪠ጜ
٬
ꢀ/Įএᢿ᪗ѿ╧ጵɟ。ƽᒄѿ ்ӥᓌ͗ᣩ҈ቂ૭ƽᒄŔᴁॷֿ
რ▏٬
᪗ἡ；᮸҈ቂ૭ ꢆֱ；RTꢀჵꢇŔ
ᛓ᪗ꢁƽᒄ；Å֪᮸ NTCꢀꢀꢈ、ͥ᮸᪗ Z
= ࿅բꢀˑ
X
= ၔꢁꢀˑ
Y
=
و
ꢀˑ TT
F
O
T
P
M
= Ꮘ᪠ጜꢀˑ
ꢁ͓ឍ、V ꢀჵꢇ OVPꢀÅ֪ᩣϚ OVPꢀŔ DETꢀჵꢇ᪗
ի٬
ACꢀ DD
= ꢀ╧ (M = ꢂꢀၓ，H = ▨ꢀၓ)
= OLP ᰁჯ (L = ₹ῑ，R = ቂ૭)
= ᎕
५ (M = SOP) = Y = ൂ૭
ר
ᤰ = Жἡӛꢀˑ
ᩣͅꢀի UVPꢀŔꢀ/ឍꢀ。
FAN6920MR ᖇЖ
ࡈ
ꢉ✈ 16 ჵꢇ෯५ꢊ (SOP)。 ሇ
•ꢂmWSaver ᑠᤏᖰŻ✊ͥ
ॷᣠœŔᅥᤚѿꢋ ♦ꢂͥ᮸ꢀի JFET ؏҈
♦ꢂQR PWMꢀॷꢀt
ꢀŔꢌၴ͓ឍ៖ᛓЖ，ᖰꢀꢁꢍꢎꢏ
ORDERING INFORMATION
See detailed ordering and shipping information on page 19 of
this data sheet.
OFF-MIN
ᜨ╧
♦ꢂꢍꢎꢏÖ⛻ PFC ᴧ᪠ጜ͓ឍ
♦ꢂꢐෙ֬ꢑ֭↠ꢄꢅꢒጜøӶÅൾ▐ 90% Å⛺Ŕᜨ╧，
៖ ꢓ 2013 ErP lot 6 ᅥᤚѿ╧ꢔḢ
Ljꢅ᠔⁰
•ꢂꢁᏰჯ PFC
٬֭↠ჯᖇЖ
ࡈ
•ꢂꢗἫᥟ：FEBFAN6920MR_T02U120A
•ꢂꢃꢂᰁჯ PFC ᖇЖ
ࡈ
•ꢂPFC ॷŔ⇆ꢀἡ᪠Ἣ
•ꢂPWM ॷŔΦꢃᔏ᪠ጜ
•ꢂPWM Ŕͥ᮸ 5 ms ꢕ؏҈
•ꢂᕩꢀƽᒄ
•ꢂꢀ/Įএᢿ᪗ѿ╧ጵɟ
•ꢂ҈ቂ૭᪗ἡƽᒄ
•ꢂ҈ቂ૭რ▏ƽᒄ
•ꢂ᮸҈ቂ૭ꢆֱ (RT ჵꢇ)
•ꢂ
ᛓ᪗ꢁƽᒄ •ꢂVDD ჵꢇ
٬
ᩣϚꢀի OVP (҈ቂ૭) •ꢂͥ᮸ꢁႆ͓ឍ (140°C)
• This is a Pb−Free Device
ၴ✈
•ꢂAC/DC NB ꢌꢖ
ࡈ
•ꢂრᦖჯ SMPS
•ꢂꢀṀ̥ꢀ
ࡈ
© Semiconductor Components Industries, LLC, 2012
1
Publication Order Number:
January, 2023 − Rev. 2
FAN6920MRCN/D
FAN6920MR
ၴ✈ᨦꢆ
BCM Boost PFC
Quasi−Resonant Flyback
NBOOST
VO
RCLAMP CCLAMP
NP
NS
RHV
+
NCZD
RPFC1
CINF2
CO.PFC
RG1
−
RPFC2
RCS1
RPFC3
165 kW
RCZD
FAN6920MR
RG2
RCS2
RRT
1
2
3
4
5
6
7
8
RANGE
COMP
INV
HV 16
NC 15
ZCD 14
VIN 13
RT 12
470 nF
CCOMP
CINF1
CRT
CSPFC
CSPWM
OPFC
VDD
NTC
FB 11
RBIAS
DET 10
RO1
OPWM
GND
9
RVIN1
CFB
VAC
RF
CF
RVIN2
NA
KA431
CVIN
RDET1
RO2
CDD1
CDD2
RDET2
ꢆꢇ1.ꢇꢈꢉၴ✈ꢁᢿ
www.onsemi.cn
2
FAN6920MR
ꢊ᮸ᨦꢆ
COMP
HV
VDD
16
2
7
RANGE
Internal
Bias
Multi−Vector Amp.
RANGE
15
6
NC
2.65V
2.75V
OVP
IHV
Two−Step
UVLO
12V/7V/5V
OVP
2.75V
2.9V
27.5V
Auto−Recovery
UVP
2.3V
DRV
Debounce
70ms
VCOMP−H 0.45V
SET
CLR
OPFC
S
R
Q
Q
VCOMP−L
ICOMP−BURST
COMP−L
15.5V
Auto−
Recovery
Brownout
COMP−H
INV
3
2.5V
Restarter
Sawtooth
Generator
ton−max
THD
Optimizer
PFC Zero−Current
Detector
VCOMP−H
COMP−H
COMP−L
2.1V/1.75V
Disable
Function
Inhibit
Timer
PFC
Current Limit
0.82V
0.2V
Blanking
Circuit
CSPFC
FB
4
Debounce
PFC Burst Mode
VIN
VCTRL−PFC
ZCD
VINV
14
0.7V
5V
10V
Timer
50ms
4.2V
2R
IZCD
Auto−Recovery
2.25ms
28ms
VB
Soft−Start
FB OLP
11
5
5ms
Starter
PWM−ON/OFF
2.3V/0.8V
VINV
R
DRV
Blanking
Circuit
SET
CLR
S
R
Q
Q
OPWM
8
CSPWM
PWM
Current Limit
17.5V
Over−Power
Compensation
IDET
(RT Pin) Prog. OTP
Auto−Recovery
(RT Pin) Externally Triggering
Auto−
Recovery
Protection
Valley
Detector
(30mA)
IDET
DET Pin OVP
VDD Pin OVP
Internal OTP
Startup
tOFF−MIN
(5ms/20.5ms/2.25ms)
Brownout
Protection
tOFF−MIN
+9ms
1st
Valley
Auto−Recovery
VDET
tOFF
Blanking
(2.5ms)
S/H
RANGE
1
VB & Clamp
Vcomp to 1.6V
Auto−Recovery
Debounce
Time
2.5V
DET OVP
IRT
Debounce
100mS
1.2V
VINV
0.8V
100mA
DET 10
0.7V
Brownout
IDET
Comparator
5V
1V/1.2V
PFC RANGE Control
Debounce
100ms
10ms
Internal
OTP
0.5V
Auto−Recovery
Prog. OTP
/ Externally Triggering
PFC Burst Mode
2.4V/2.25V
9
13
12
GND
RT
VIN
ꢆꢇ2.ꢇꢋ்ᨦꢆ
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3
FAN6920MR
ჵ௪ภ
RANGE
COMP
INV
1
2
3
16
15
14
HV
N.C.
ZCD
CSPFC
CSPWM
OPFC
4
5
6
7
8
13
12
11
10
9
VIN
RT
FB
VDD
DET
GND
OPWM
ꢆꢇ3.ꢇჵ௪ภ
ჵ௪ꢌꢍ
ჵ௪ꢎ
1
ꢏӀ
ᛄ
RANGE RANGE ჵ௪ŔℋᑷᨙᕎꢃVIN ჵ௪ꢀիꢀၓָӶ。ᄳꢃVIN ჵ௪ꢁἫАŔᩣͅꢀի▨n⃘Ȝꢀի៖，͖ᚎਾꢄꢂℋ
ᑷ；Ħୢᩣͅꢀիn▨ꢀၓ，Ϲᚎਾꢄ▨ℋᑷ。
2
3
4
5
COMP
INV
ᚿ࿎ଇ
ࡈ
ŔᩣϚჵ௪。ᚵଇࡈ
ꢄᢸො५ᚿ࿎ଇࡈ
，✈nꢃPFC ᩣϚꢀի֭。✃ᣩŔૺױ
ᲟꢀἡͥਾАᚵଇ ࡈ
ꢅ，ࣀ
ᵄ，PFC ꢀի֭▏ᢿŔጵɟ̡ᚈईᚵჵ௪٬
ꢃGND +ᣩ⛰ꢆِԵŔጵɟꢀᢿ。 ᚿ࿎ଇ
ࡈ
Ŕ֭Ljᩣֿͅ。ᚵჵ௪Ŕļ✈᠏，᪗Ϧիࡈ
ᖅꢃPFC ꢀիꢀၓ，ၖᖰŻꢃPFC ᩣϚ᪗ի٬ᴀի
ƽᒄ。 ᚵჵ௪᪨
ᖇЖꢃPWM ؏҈。⛰ំꢃFAN6920MR ො✄ꢃV ᡕ᪗ꢃ2.3 V，PWM Փ؏҈。
INV
CSPFC ᖰŻ
و
℠ἡƽᒄŔꢃPFC ᪗ἡƽᒄᶴᩓࡈ
Ŕᩣͅ。ᄳꢃPFC ꢀἡዿἫꢀℋ⛺ዿἫАŔꢀիАͥ᮸⃘Ȝꢃ(0.82 V ͘५Ȝ) ៖，PFC რ͓ú͓ឍÅ↠Ἓ
و
℠ἡ。 CSPWM PWM ᪗ἡƽᒄŔᶴᩓ
ࡈ
Ŕᩣͅ，ᨙᕎꢃFB ჵ௪ꢀի᪫ጜꢃPWM ꢀἡᰁჯᖇЖ。ᨙᕎꢃPWM t ៖ͥŔꢃDET ჵ௪ ON
⁰ꢀἡ，ş✈ꢀℋዿἫꢃPWM რ͓Ŕრ͓ꢀἡၖ
ױ
ꢃCSPWM ჵ௪ឝҀዿἫꢀիÅൾ▐و
℠ἡ、ꢀἡᰁჯᖇЖ٬
▨/ꢂիএᢿ᪗ѿ╧ጵɟ。
6
7
OPFC
VDD
╁҈᮸ѿ╧ꢃMOSFET Ŕ
ࣞ
᧑╁҈ࡈ
ᩣϚ。٭
ĭ᧥ᥡᩣϚꢀիꢄꢃ15.5 V。 ꢀ⁰。
؏҈٬
͓ឍŔ⃘ȜꢀիϦЋꢄꢃ12 V ٬
ꢃ7 V。؏҈ꢀἡ෯nꢃ30 mA ✄࿅ļꢀἡ෯nꢃ10 mA。 8
OPWM
ࣞ
᧑ᩣϚ
⛿ꢃPWM ǁח
，✈Å╁҈᮸ѿ╧ꢃMOSFET。٭
ĭ᧥ᥡᩣϚꢀիꢄꢃ17.5 V。 9
GND
DET
ѿ╧ऐ٬
ǁח
ऐ。 10
ᚵჵ௪᪗ꢀℋϦի
ࡈ
ᖅೃꢃPWM ָիࡈ
Ŕᩕ҉থঔÅൾ▐⛻Ϸѿ்： •ꢇ⛿ጵɟꢀիÅጵɟꢃPWM ℠ἡŔ⃘Ȝꢀի®ൾ▐᪗ѿ╧ጵɟ。ᄳꢃPWM რ͓ᖅ៖，⛿Ŕጵɟꢀի⛾ᩣͅ
ꢀիLj⛰ೄ。
•ꢇꢁἫꢃPWM რ͓⃯ꢀիŔᜇၵꢀիǁ
ח
Åൾ▐ᜇၵꢀիრ͓ၖᣠଇ℠ႆίꢃPWM რ͓⛺Ŕრ͓ᔿ૧。 •ꢇᖰŻᩣϚ᪗իƽᒄ。ꢀիᶴᩓ
ࡈ
ͥਾईꢃDET ჵ௪ꢅ。DET ჵ௪᪗⛾ᩕ҉থঔၖତŔϦիࡈ
ꢁἫԃൺꢀի。ᵄ ԃൺꢀիईꢃPWM ꢀዿꢀ៖֭ͥ᠀Аᴁॷথঔ。ୢᩣϚ
᪗ի٬ᵄԃൺꢀի
▨nꢃ2.5 V，ᖇЖࡈ
෦ȼᵂᐠᣩꢃ PFC
٬
ꢃPWM რ͓ᚭļ。ƽᒄᰁჯꢄ҈ቂ૭。 11
FB
֭ꢀիჵ௪✈nᖅᩣϚꢀիꢀၓǁ
ח
Å̾ൺ✈nᛓᩣϚꢀիŔꢃPWM ᧥ᥡՀՊᶴ。ୢꢃFBჵ௪ꢀի▨n 4.2 V ࿆
ד
Ŕ⃘Ȝᡕ᪗ꢃ50 ms，ϹꢃFB ჵ௪ꢀի?
↠Ἓრ▏᪗ᩍƽᒄ٬ᩣ
Ϛʽᢿƽᒄ。ᚵჵ௪Ŕᩣͅℋᑷꢄꢃ5 kWꢃ ؙᜨꢀℋ。FB
ჵ௪٬
ꢃCSPWM/FB ᶴᩓࡈ
Ŕᩣֿͅ+✈ꢃ1/3 ፀίࡈ
ᖅ。 12
13
14
RT
VIN
ZCD
ᛓ᪗ꢂƽᒄ٬᮸
ƽᒄᒶֱ。ሲൺꢀἡ®ꢃRT ჵ௪ἡϚ。RT ჵ௪ꢀիꢂnꢃ0.8 V (͘५Ȝ) ៖，ú↠Ἓƽᒄၖȼᵂ PFC
٬
ꢃPWM რ͓ᚭļ。ᚵƽᒄꢄ҈ቂ૭。 ꢀ/ឍꢀƽᒄŔএᢿꢀիꢁἫ。ᚵჵ௪
᪗Ϧիࡈ
ᖅἡᩣͅꢀիꢀၓ。VIN ჵ௪Ŕꢀիꢀၓ⛽¥✈nᖇЖ RANGE ჵ௪Ŕ⒖ᇡ，✄᪨்ෙἡᩣͅꢀիꢃUVP ᪫ጜꢀ/ឍꢀƽᒄ。
PFC ॷŔꢁꢀἡꢁἫ。ᚵჵ௪ᖅೃ⛾ꢃPFC ꢀዿথঔꢃ
ר
Ŕᩕ҉থঔ，⛰ំꢃPFC ꢀዿꢀἡꢀೃꢁ៖，ՓꢁἫ ZCD ꢀիǁ
ח
。ꢁἫАꢃZCD ꢀիǁח
៖，ᖇЖࡈ
úრថŔꢃPFC რ͓و
。ZCD ჵ௪ꢀիᒩೃꢂnꢃ0.2 V (͘५ Ȝ) ៖，úё✈ꢃPFC ॷၖ✄ᖇЖ
ࡈ
úȼᵂꢃPFC რ͓ᚭļ。ୢꢂё✈ꢃPFC ॷ，᪗᮸ꢀᢿՓ
ൾ▐。 15
16
NC
HV
ៀᖅ
▨ꢀի؏҈ჵ௪᪗ꢀℋꢃ(100 kWꢃ͘५Ȝ) ᖅАἡএᢿꢀի，ÅƟ෦▨̥ꢀꢀἡᖰŻꢃV ꢀ。
DD
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4
FAN6920MR
ভꢐᣠꢑ⍭ꢌꢒ
ꢎ ꢓᝐ
ᣠꢔꢒ
−
ᣠꢑꢒ
30
ꢕꢖ
V
V
DD
V
HV
ꢀ⁰ꢀի (DC)
HV
−
500
V
V
OPFC, OPWM
−0.3
−0.3
−0.3
−
25.0
7.0
V
H
V
INV, COMP, CSPFC, DET, FB, CSPWM, RT, VIN, RANGE
V
L
V
ZCD
ZCD ჵ௪Ŕᩣͅꢀի
12.0
800
V
P
D
ѿ૧
mW
°C/W
°C/W
°C
°C
°C
V
q
⋍ℋ (ণАՊᷴ)
−
104
JA
JC
q
⋍ℋ (ণА)
−
41
T
࿅ļণꢂ
−40
−55
−
+150
+150
+260
4500
1250
J
T
STG
സʈꢂႆී
ࣔ
T
ჵ௪ꢂႆ (⋪ᖅ，10 Ң)
L
ESD
−
ijᰁ५，JESD22-A114 (ꢃ HV ჵ௪Ŕᐠᣩჵ௪) (Ỉ 3)
̣Ö̥ꢀᰁ५，JESD22-C101 (ꢃ HV ჵ௪Ŕᐠᣩჵ௪) (Ỉ 3)
−
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
(֢ꢄᚡᝧ)
ୢꢀիᡕ᪗ᣠଇꢄൺȜጸꢅϷϚŔȜී
ࣔ
，ࡈ
Ö
்úᔿय。ୢᡕ᪗Ûĵ᪩{℠Ȝ，෦ៀẵƽᚑࡈ
Öѿ்，
்úොೄࡈ
Öᔿय，ᅑڭ
ꢅሇ。 1. ඵիѻᡕ᪗ভෙᣠଇꢄൺȜꢅᐠϷŔᝐȜ，
்úࡈ
ÖᏰ⛽
ǎ૭Ŕᔿय。 2. ἫᅷŔᐠᣩꢀի，ꢃ࿎ᰁꢀի+，ᯍ֢⍇ GND ჵ௪。
3. ӥᓌ HV ჵ௪ईͥŔᐠᣩჵ௪：CDM = 750 V，HBM 1000 V。
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5
FAN6920MR
ꢁᷴሇ (ꢃꢆ
׆
ᣩᛄ，؆Ϲ V = 15 V ✄T = 25°C。) DD
A
ꢎ ᮸ꢙ
ꢓᝐ
࿅ꢗꢘ
ᣠꢔꢒ
ꢈꢉꢒ
ᣠꢑꢒ
ꢕꢖ
V
DD
V
ঽ࿅ļꢀի
ො⃘Ȝꢀի
−
10.5
6
−
12.0
7
25
13.5
8
V
V
OP
V
DD−ON
DD−PWM−OFF
V
PWM ͓ឍ⃘Ȝꢀի
͓ឍ⃘Ȝꢀի
؏҈ꢀἡ
V
V
4
5
6
V
DD−OFF
I
V
= V − 0.16 V,
DD−ON
−
20
30
mA
DD−ST
DD
᧥ᥡრᢿ
I
࿅ļꢀἡ
V
= 15 V, OPFC,
−
−
−
10
−
mA
mA
mA
DD−OP
DD
OPWM = 100 kHz,
, C = 2 nF
C
L−PFC
L−PWM
I
ൂᰁჯ࿅ļꢀ⁰ꢀἡ (ၓध)
PWM ͓ឍLjĭŔ࿅ļꢀἡ
V
DD
= 15 V,
5.5
120
DD−GREEN
OPWM = 450 Hz,
C
= 2 nF
L−PWM
I
V
DD
= V
−
70
170
DD−PWM−OFF
DD−PWM−OFF
0.5 V
V
V
V
᪗իƽᒄ (҈ቂ૭)
OVP ֛ᑶ៖
26.5
100
27.5
150
28.5
200
V
DD−OVP
DD
t
ms
VDD−OVP
DD
HV ꢚꢛꢁ⁰ꢁἡ᮸ꢙ
®HV ჵ௪Ὠ૧Ŕꢀ⁰ꢀἡ
I
V
= 90 V,
DC
1.3
−
−
−
−
mA
HV
AC
(V = 120 V), V = 0 V
DD
HV = 500 V,
1.0
mA
V
DD
= V
+1 V
DD−OFF
VIN ꢁ RANGE ᮸ꢙ
V
✈nἡᩣͅᴀիƽᒄŔ⃘Ȝꢀի
ᴀիƽᒄ૭ĭꢀի
0.95
1.00
1.05
V
V
VIN−UVP
V
V
V V
VIN−UVP VIN−UVP
VIN−RE−UVP
VIN−UVP
+0.15 V +0.20 V +0.25 V
t
ᴀիƽᒄ֛ᑶ҈៖
70
2.40
2.20
60
100
2.45
2.25
90
130
2.50
2.30
120
0.5
ms
V
VIN−UVP
V
RANGE ᶴᩓ
ࡈ
Ŕ▨ V RANGE ᶴᩓ
ࡈ
ŔꢂV ⃘Ȝ
⃘Ȝ
VIN−RANGE−H
VIN
V
V
VIN−RANGE−L
VIN
t
RANGE ş் / ё✈֛ᑶ҈៖
RANGE ჵ௪ŔᩣϚꢂꢀի
RANGE ჵ௪ŔᩣϚ▨⃯ꢀἡ
PFC ᣠଇො៖
ms
V
RANGE
V
I
= 1 mA
−
−
RANGE−OL
RANGE−OH
O
I
RANGE = 5 V
= 24 kW
−
−
50
nA
ms
t
R
22
25
28
ON−MAX−PFC
MOT
PFC STAGE
ꢁꢜᚿ࿎ꢑꢄ᮸ꢙ
Gm
ᢸො (Ỉ 4)
100
2.465
2.70
2.60
1.06
125
2.500
2.75
2.65
−
150
2.535
2.80
2.70
1.14
mmho
V
֭ᶴᩓ
ࡈ
֢ꢄꢀի ٭
ĭ▨֭ꢀի V
V
REF
V
INV−H
RANGE = რᢿ
RANGE = ᖅऐ
V
RATIO
٭
ĭ▨ᩣϚꢀիᶴ (Ỉ 4) V/V
V
/ V ,
REF
-
INV H
RANGE = რᢿ
V
/ V ,
REF
1.04
−
1.08
-
INV H
RANGE = ᖅऐ
V
٭
ĭꢂ֭ꢀի 2.25
−
2.35
2.90
2.75
2.45
2.95
2.80
V
V
INV−L
V
INV ᩣͅŔ᪗իƽᒄ
RANGE = რᢿ
RANGE = ᖅऐ
INV−OVP
−
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6
FAN6920MR
ꢁᷴሇ (ꢃꢆ
׆
ᣩᛄ，؆Ϲ V = 15 V ✄T = 25°C。) (ঽ) DD
A
ꢎ ꢓᝐ
࿅ꢗꢘ
ᣠꢔꢒ
ꢈꢉꢒ
ᣠꢑꢒ
ꢕꢖ
ꢁꢜᚿ࿎ꢑꢄ᮸ꢙ
t
᪗իƽᒄ֛ᑶ҈៖
INV ᩣͅŔᴀիƽᒄ
50
0.35
2.2
70
0.45
2.3
90
0.55
2.4
ms
V
INV−OVP
V
INV−UVP
V
INV ჵ௪⛺Ŕ PWM ො⃘Ȝꢀի
V
INV−PWMON
V
INV ჵ௪⛺PWM ො⃘ȜꢀիŔ₾
ࢾ
V
INV−
V
INV−
V
INV−
V
HYST−PWMON
PWMON
−1.6
PWMON
−1.5
PWMON
−1.4
t
ᴀիƽᒄ֛ᑶ҈៖
50
70
1.20
1.60
150
−
90
ms
V
INV−UVP
V
✈nឍꢀƽᒄŔ PWM
٬
PFC ͓ឍ⃘Ȝ ✈nឍꢀƽᒄŔ COMP ჵ௪⛺Ŕ℠Жꢀի
✈nPFC ᴧᰁჯŔͥ᮸ȯիꢀἡ
ᶴᩓ
ࡈ
ᩣϚ▨ꢀի 1.15
1.55
120
4.80
2.20
2.00
1.80
0.9
1.25
1.65
180
5.20
2.40
2.20
2.00
1.1
INV−BO
V
V
COMP−BO
I
mA
V
COMP−BURST
V
COMP−H
PFC ᴧᰁჯ⛻Ŕᶴᩓ
ࡈ
ᩣϚ▨ꢀի V
V
V
= 1.3 V, V
= 1.2 V
= 1.6 V
= 2 V
2.30
2.10
1.90
1.0
FB
FB
FB
VIN
VIN
VIN
= 1.3 V, V
= 1.3 V, V
V
PFC ᴧᰁჯ⛻Ŕᶴᩓ
ࡈ
ᩣϚꢂꢀի RANGE = რᢿ,
V
COMP−L
V
FB
= 1.3 V
V
COMP ჵ௪⛺ŔꢁՀՊᶴꢀի
ᶴᩓ
ࡈ
ᩣϚ⁰ꢀἡ 1.10
15
1.25
30
1.40
45
V
OZ
I
V
V
= 2.3 V,
mA
COMP
INV
= 1.5 V
COMP
V
= 1.5 V
0.50
20
0.75
30
1.00
40
mA
INV
ᶴᩓ
ࡈ
ᩣϚ∬ꢀἡ RANGE = რᢿ,
mA
V
INV
= 2.75 V,
V
COMP
= 5 V
RANGE = ᖅऐ,
20
30
40
V
INV
= 2.65 V,
V
COMP
= 5 V
PFC ꢁἡዿἫ᮸ꢙ
V
و
໐Ȝ℠ἡŔ⃘Ȝꢀի Āᚍზ
V
COMP
= 5 V
0.77
−
0.82
110
0.87
200
250
1.00
V
ns
CSPFC
t
PD
t
ЭẟὨꢇ៖
110
0.90
180
0.95
ns
BNK
A
V
THD Ŕ CSPFC ጵɟᶴ
V/V
PFC ᩣꢝ᮸ꢙ
V
PFC ᧥ᥡᩣϚ
٭
ĭꢀի PFC ᧥ᥡᩣϚꢂꢀի
PFC ᧥ᥡᩣϚ▨ꢀի
PFC ᧥ᥡᩣϚ⛺ԧ៖
V
DD
V
DD
V
DD
V
DD
= 25 V
14.0
−
15.5
−
17.0
1.5
−
V
V
Z
V
OL
= 15 V, I = 100 mA
O
V
OH
= 15 V, I = 100 mA
8
−
V
O
t
R
= 12 V, C = 3 nF,
30
65
100
ns
L
20~80%
t
F
PFC ᧥ᥡᩣϚ⛻ꢈ៖
V
= 12 V, C = 3 nF,
30
50
70
ns
DD
L
80~20%
PFC ⇆ꢁἡ᪠Ἣ᮸ꢙ
V
ᩣ⃘ͅȜꢀի⛺ԧẟ
⃘Ȝꢀի₾
ࢾ
V
V
ଇ
1.9
0.25
8
2.1
0.35
10
2.3
0.45
−
V
V
V
V
V
ZCD
ZCD−HYST
ZCD
V
ί෯
ZCD
V
٭
ĭꢀի⛺℠ I
= 3 mA
ZCD−HIGH
ZCD
V
٭
ĭꢀի⛻℠ 0.35
0.70
0.45
0.90
0.55
1.10
ZCD−LOW
V
؏҈ᒩꢀἡ⃘Ȝꢀի
ZCD−SSC
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7
FAN6920MR
ꢁᷴሇ (ꢃꢆ
׆
ᣩᛄ，؆Ϲ V = 15 V ✄T = 25°C。) (ঽ) DD
A
ꢎ ꢓᝐ
࿅ꢗꢘ
ᣠꢔꢒ
ꢈꢉꢒ
ᣠꢑꢒ
ꢕꢖ
PFC ⇆ꢁἡ᪠Ἣ᮸ꢙ
t
®ZCD АᩣϚොŔᣠଇზ
Ო؏៖
V
V
V
= 5 V, f = 60 kHz
100
300
1.5
−
200
700
3.5
ns
ms
ms
V
DELAY
RESTART−PFC
COMP
S
t
500
2.5
t
ᑱЖ៖ (ᣠଇრ͓ꢀ╧℠Ȝ)
PFC ş்/ё✈ѿ⃘்Ȝꢀի
PFC ş்/ё✈ѿ்֛ᑶ҈៖
= 5 V
INHIB
COMP
V
0.15
100
0.20
150
0.25
200
ZCD−DIS
ZCD−DIS
t
= 100 mV
ms
ZCD
PWM STAGE
ꢞᩣꢟ᮸ꢙ
A
V
ꢀἡዿἫፀίŔᩣͅꢀի (Ỉ 4)
A = DV / DV ,
FB
1/2.75
1/3.00
1/3.25
V/V
V
CS
0 < V < 0.9
CS
Z
ᩣͅℋᑷ (Ỉ 4)
V
V
> V
= V
3
−
5
7
kW
mA
V
FB
FB
FB
G
I
ȯਾꢀἡ
1.2
0.9
4.2
50
5
2.0
1.1
4.5
60
6
OZ
OZ
V
OZ
ꢁՀՊᶴᩣͅꢀի
რ▏ƽᒄ⃘Ȝꢀի
რ▏ƽᒄŔ֛ᑶ҈៖
ͥ᮸ᨿ؏҈៖ (Ỉ 4)
0.7
3.9
40
4
V
V
FB−OLP
FB−OLP
t
ms
ms
t
V
FB
= 0 V~3.6 V
FB−SS
DET ჵ௪ OVP ꢁỂᜇ᪠Ἣ᮸ꢙ
V
ᶴᩓ
ࡈ
֢ꢄꢀի რ▏ƚ (Ỉ 4)
ƚဆඝ (Ỉ 4)
2.45
−
2.50
60
2.55
−
V
dB
MHz
ms
DET−OVP
Av
BW
−
1
−
t
ᩣϚOVP (҈ቂ૭) ֛ᑶ҈៖
ᣠଇꢀἡ⁰
100
−
150
−
200
1
DET−OVP
I
V
= 0 V
mA
V
DET−SOURCE
DET
V
٭
ĭꢀի⛻℠ I
= 1 mA
0.15
150
−
0.25
200
2.5
0.35
250
−
DET−LOW
VALLEY−DELAY
DET
t
®ꢁἫАᜇၵǁ
ח
АᩣϚොŔზ៖ (Ỉ 4) ns
t
PWM MOS ͓ឍ៖ DET-OVP (2.5 V)ꢃ
٬ᜇၵ
ǁח
Ŕ ЭẟὨꢇ៖ (Ỉ 4)
ms
OFF−BNK
t
t
(Ỉ 4) ᖅऐ
8
9
10
ms
TIME−OUT
OFF-MIN
PWM ᔏัꢄ᮸ꢙ
t
ᣠଇො៖
ᣠ෯͓ឍ៖
38
−
45
52
−
ms
ms
ON−MAX−PWM
t
V
V
≥ V , T = 25°C
5
OFF−MIN
FB
N
A
= V
−
20.5
2.10
1.15
0.1
−
FB
G
V
V
FB ꢀၓൂᰁჯොŔრ
1.95
1.00
−
2.25
1.30
−
V
V
V
V
N
FB ꢀၓൂᰁჯ͓₽Ŕრ
G
ΔV
ई FB ꢀիꢀၓრൂ͓₽ᰁჯŔ₾
ࢾ
(Ỉ 4) ✈nPFC ᴧᰁჯŔ FB ჵ௪⛺Ŕ⃘Ȝꢀի
G
V
V
1.65
1.60
1.75
−
1.70
1.65
1.80
100
1.75
1.70
1.85
−
RANGE ჵ௪ͥ᮸რᢿ
RANGE ჵ௪ͥ᮸ᖅऐ
CTRL−PFC−BM
✈nPFC ᵃဘ࿅ļŔ FB ჵ௪⛺Ŕ⃘Ȝꢀի
✈nPFC ᴧᰁჯŔ֛ᑶ҈៖
V
CTRL−PFC−ON
t
PFC ᵃဘ࿅ļ→
ᴧᰁჯ
ms
PFC−BM
t
PFC ቂ૭Аᵃဘ࿅ļŔ֛ᑶ҈៖
؏҈ᙱ៖
ࡈ
(ᡕ៖ᙱ៖ࡈ
) PFC ᴧᰁჯ →
ᵃဘ࿅ļ
−
200
−
ms
PFC−ON
t
V
V
< V , T = 25°C
1.85
22
2.25
28
2.65
34
ms
STARTER−PWM
FB
G
A
> V
,
ms
FB
FB−OLP
T = 25°C
A
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8
FAN6920MR
ꢁᷴሇ (ꢃꢆ
׆
ᣩᛄ，؆Ϲ V = 15 V ✄T = 25°C。) (ঽ) DD
A
ꢎ ꢓᝐ
࿅ꢗꢘ
ᣠꢔꢒ
ꢈꢉꢒ
ᣠꢑꢒ
ꢕꢖ
PWM ᩣꢝ᮸ꢙ
V
PWM ᧥ᥡᩣϚ
٭
ĭꢀի PWM ᧥ᥡᩣϚꢂꢀի
PWM ᧥ᥡᩣϚ▨ꢀի
PWM ᧥ᥡᩣϚ⛺ԧ៖
V
V
V
= 25 V
16.0
−
17.5
−
19.0
1.5
−
V
V
CLAMP
DD
DD
DD
V
OL
= 15 V, I = 100 mA
O
V
OH
= 15 V, I = 100 mA
8
−
V
O
t
R
C = 3 nF, V = 12 V,
−
80
110
ns
L
DD
20~80%
t
F
PWM ᧥ᥡᩣϚ⛻ꢈ៖
C = 3 nF, V = 12 V,
20~80%
−
40
70
ns
L
DD
ꢁἡ᪠Ἣ᮸ꢙ
t
ᩣϚზ
−
150
0.84
0.72
0.58
0.40
0.30
200
0.87
0.75
0.61
0.43
0.35
ns
V
PD
V
℠Ж CSPWM ჵ௪⛺Ŕꢀի®ൾ▐᪗ѿ╧ጵɟ
0.81
0.69
0.55
0.37
0.25
I
I
I
I
t
< 75 mA, T = 25°C
LIMIT
DET
DET
DET
DET
A
= 185 mA, T = 25°C
A
= 350 mA, T = 25°C
A
= 550 mA, T = 25°C
A
V
╧ጵɟ( (Ỉ 4)
V
= 45 ms,
SLOPE
ON
RANGE = Open
t
= 0 ms
0.05
0.10
300
−
0.15
ON
t
ЭẟὨꢇ៖
ns
V
ON−BNK
V
CSPWM ჵ௪ኌՊ VCSPWM
٭
ĭ▨ꢀի ზ៖，CS ჵ௪ኌՊ
CSPWM ჵ௪ኌՊ
CSPWM ჵ௪ኌՊ
4.5
−
5.0
−
CS−FLOATING
t
150
ms
CS−H
RT ჵ௪᪗ꢂꢠᒄ᮸ꢙ
ͥ᮸ OTP Ŕ⃘Ȝꢂႆ (Ỉ 4)
T
OTP
125
−
140
30
155
−
°C
°C
mA
V
T
ͥ᮸ OTP Ŕ₾
ࢾ
ꢂႆ (Ỉ 4) RT ჵ௪Ŕͥ᮸ᒩꢀἡ
ƽᒄᒶֱꢀի
OTP−HYST
I
RT
90
100
0.80
0.50
10
110
0.85
0.55
−
V
0.75
0.45
−
RT−AR
RT−OTP−LEVEL
V
ꢈॷ֛ᑶ҈៖Ŕ⃘Ȝꢀի
OTP Ŕ֛ᑶ҈៖
V
t
ms
ms
RT−OTP−H
t
᮸ᒶֱŔ֛ᑶ҈៖
V
RT
< V
RT−OTP−LEVEL
70
110
150
RT−OTP−L
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
(֢ꢄᚡᝧ)
ꢃꢆ
׆
ᣩᛄ，“ꢀᷴሇ”ጸꢅϷϚŔ᠏ᐠϷἫᚥÖ⛻Ŕڡ
ሇ்֢ᝐ。ୢई⛽
Ö⛻᪠ጜ，ڡ
ሇ்
்⛾“ꢀᷴሇ”ጸ ꢅᐠϷሇ்֢ᝐ⛽⛰ೄ。
4. ᚎᙱƽᚑ
www.onsemi.cn
9
FAN6920MR
ꢈꢉሇ்ᅡ
12.5
12
7.85
7.8
7.75
7.7
11.5
11
7.65
7.6
7.55
7.5
10.5
10
7.45
−40
−30
−15
0
25
50
75
85
100
125
−40
−30
−15
0
25
50
75
85
100
125
Temperature (°C)
Temperature (°C)
ꢆꢇ4.ꢇꢡ⃘ꢒꢁꢜ
ꢆꢇ5.ꢇPWM ꢅឍ⃘ꢒꢁꢜ
6
5
4
3
2
1
0
29.0
28.5
28.0
27.5
27.0
−40
−30
−15
0
25
50
75
85
100
125
−40 −25 −10
5
20 35
50 65 80
95 110 125
95 110 125
95 110 125
Temperature (°C)
Temperature (°C)
ꢆꢇ6.ꢇꢅឍ⃘ꢒꢁꢜ
ꢆꢇ7.ꢇVDD ᪗ꢜꢠᒄ⃘ꢒ
8.0
7.0
6.0
5.0
4.0
16.0
14.0
12.0
10.0
8.0
6.0
−40 −25 −10
5
20
35 50
65 80 95 110 125
−40 −25 −10
5
20
35
50 65 80
Temperature (°C)
Temperature (°C)
ꢆꢇ8.ꢇꢚꢛꢁἡ
ꢆꢇ9.ꢇ࿅ꢗꢁἡ
17.0
16.5
16.0
15.5
15.0
14.5
14.0
2.60
2.55
2.50
2.45
2.40
−40 −25 −10
5
20
35 50
65 80
95 110 125
−40 −25 −10
5
20
35 50
65
80
Temperature (°C)
Temperature (°C)
ꢆꢇ10.ꢇPFC ᩣꢝꢞꢓꢁꢜ
ꢆꢇ11.ꢇPFC ᧥ᥡᩣꢝ
٭
ꢖꢁꢜ www.onsemi.cn
10
FAN6920MR
ꢈꢉሇ்ᅡ (ᖅ⛺ꢉ)
28.0
27.0
26.0
25.0
24.0
23.0
22.0
0.95
0.90
0.85
0.80
0.75
95 110 125
−40 −25 −10
5
20
35 50
65 80
−40 −25 −10
5
20 35
50 65
80
95 110 125
Temperature (°C)
Temperature (°C)
ꢆꢇ12.ꢇPFC ᣠꢑꢡ៖
ꢆꢇ13.ꢇPFC ໐ꢒ℠ἡꢁꢜ
45
44
43
42
41
40
39
38
19.0
18.5
18.0
17.5
17.0
16.5
16.0
−40 −25 −10
5
20
35 50
65
80
95 110 125
−40
−30
−15
0
25
50
75
85
100
125
Temperature (°C)
Temperature (°C)
ꢆꢇ14.ꢇPWM ᧥ᥡᩣꢝ
٭
ꢖꢁꢜ ꢆꢇ15.ꢇPWM ᣠꢑꢡ៖
2.3
2.2
2.1
2.0
1.9
1.4
1.3
1.2
1.1
1.0
−40 −25 −10
5
20
35 50
65 80 95 110 125
−40 −25 −10
5
20 35
50
65 80
95 110 125
Temperature (°C)
Temperature (°C)
ꢆꢇ16.ꢇൂრꢚᰁჯꢢ VFB ꢣრꢤ
ꢆꢇ17.ꢇൂꢅ₽ᰁჯꢢ VFB ꢣრꢤ
5
4.9
4.8
4.7
4.6
4.5
4.4
4.3
4.2
21.5
21
20.5
20
19.5
19
18.5
18
−40
−40
−30
−15
0
25
50
75
85
100
125
−30
−15
0
25
50
75
85
100
125
Temperature (°C)
Temperature (°C)
ꢆꢇ18.ꢇVFB > VN Ŕ PWM ᣠꢔꢅឍ៖
ꢆꢇ19.ꢇVFB = VG Ŕ PWM ᣠꢔꢅឍ៖
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11
FAN6920MR
ꢈꢉሇ்ᅡ (ᖅ⛺ꢉ)
0.295
0.29
2.60
2.55
2.50
2.45
2.40
0.285
0.28
0.275
0.27
95 110 125
−40 −25 −10
5
20
35 50
65 80
−40
−30 −15
0
25
50
75
85
100 125
Temperature (°C)
Temperature (°C)
ꢆꢇ20.ꢇDET ჵ௪ꢥᩓꢦŔ
٭
ꢖꢁꢜ ꢆꢇ21.ꢇDET ჵ௪ᩣꢝ᪗ꢜꢠᒄŔꢓꢁꢜ
110
105
100
95
0.90
0.85
0.80
0.75
0.70
90
−40 −25 −10
5
20
35 50
65
80
95 110 125
−40 −25 −10
5
20 35
50 65 80
95 110 125
Temperature (°C)
Temperature (°C)
ꢆꢇ22.ꢇRT ჵ௪Ŕꢊ᮸ᒩꢁἡ
ꢆꢇ23.ꢇRT ჵ௪Ŕ᪗ꢂꢠᒄ⃘ꢒꢁꢜ
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12
FAN6920MR
ꢋ்ᛄ
PFC ꢁᢿ
PFC VO
R 1
Error
Amplifier
VCOMP
ꢀꢁꢂꢃꢄꢅꢆꢇꢈ THD ꢉꢊꢇ
RS
Filp−Flop
PFC
MOS
2.5 V
INV
ꢄൾ▐ᣔଢ଼Ŕ҈ᇡሇ்、ᣔᇋŔɼᇡ
ڭ
ၴÅ֪ PFC ᩣϚ⛺Ŕꢘ̾ꢙĭ，FAN6920MRꢀ෦ꢚො५ଇ
ࡈ
⛾ ✃ЉŔϻថ५ૺ
ױ
ꢛꢜ࿎ଇࡈ
ꢖר
ş✈。ꢝଇࡈ
ŔЊዯ
ࣞ
ୢࣞ
ꢀ24ꢀᐠЊ。PFCꢀᩣϚꢀի᪗ꢃ R ٬
R 3
THD
Optimizer
+
4
S
R 2
RS
+
CSPFC
1
2
ꢞᏰŔ᮸ꢀꢈϦի
ࡈ
ꢀᢿ®ꢀINVꢀჵꢇ᪠Ἣ。ᄳꢀPFC ᩣϚָӶꢀիꢟ᪗Įn 2.5 V ֢ꢠꢀիŔꢀ6% ៖，
ૺ
ױ
ꢛꢜ࿎ଇࡈ
úᛓ͖ᩣϚ∬ꢀἡᒩꢀἡÅ Ҁ▏ᢿ
ڭ
ၴ，®ꢡӶጵɟꢀᢿ。 Sawtooth
Generator
FAN6920MR
ꢆꢇ25.ꢇꢩ✈ THD ꢪꢫꢄŔꢧꢨᲟᚿ࿎ꢑꢄ
2.65 V
PFC VO
IL,AVG (Fixed On−Time)
IL,AVG (with THD Optimizer)
2.35 V
R1
CO
COMP
2.5 V
INV
2
3
CCOMP
R2
Error
Gate Signal with
THD Optimizer
VCOMP
Amplifier
FAN6920MR
Sawtooth
Gate Signal with
Fixed On−Time
OFF
ON
ꢆꢇ24.ꢇꢧꢨᲟᚿ࿎ꢑꢄ
ꢆꢇ26.ꢇꢩ✈ꢁ⛽ꢩ✈ THDꢇꢪꢫꢄእΕ⛻
ࣚ
ꢌꢡ៖ Ŕ࿅ꢗỂᅂ
INV ჵꢇ⛺Ŕ֭ꢢꢀիǁ
ח
⛾ꢀ2.5 VꢀŔ֢ꢠꢀիLj ᶴꢣ，şꢜ࿎ଇ
ࡈ
Ŕᒩꢀἡ∬ꢀἡෙ͖ᩣϚꢀ Input Current
C
COMP
ꢀ̥ꢀꢀ。COMPꢀꢀի⛾ͥ᮸⛿ŔꢤꢥỂ
1.8
ᅂLjᶴꢣÅ̾ൺꢀPFC ᧥ᥡŔො៖。ဘ，ई֭ꢢ
▏ᢿဆඝꢣĮŔእΕ⛻，PFCꢀ᧥ᥡො៖ŔָӶၴ
ᥡ෯ၖ✄ई⛰ꢅᩣͅἡ
و
ͥπ.ƽᓡሲൺ。Ħ ᠏，ꢍꢎꢏÖ⛻Ŕѿ╧
ࣀ
ᝐᨁᵃꢀᢿᣩ⛰ꢅꢦꢧ， Փ᪗⇆ǯ；ꢝꢦꢧúşᩣͅꢀἡǯၖොꢨ
ߋ
যŔ ማꢃỂǯ (THD) ᣔ࿎。ꢄꢒꢍꢎꢏÖ⛻，ค͖
᠏ईꢀᩣͅꢀիÖ⛻ THDꢀŔꢂ，᪗ईꢀἡዿ
Ἣꢀꢈ⛺ෙꢀիꢒጜꢉᨗ，ᖲͅ⛰ꢅϻថŔ THDꢀø
Ӷ
ࡈ
。ꢀἡዿἫꢀꢈ⛺ŔꢝꢉᨗꢀիΊҀАꢤꢥỂᅂ ꢆ，®ෙ PFCꢀ᧥ᥡො៖ꢒጜᛓЖ，
ࣀ
ᵄईԪꢅ ἡ
و
ͥꢝ៖ၖꢩሲൺො៖。THDꢀøӶࡈ
٬
PWMꢀ+ᚭļᰁषŔយẵୢ
ࣞ
25ꢀᐠЊ。ईꢪ᪗ꢀTHD øӶ
ࡈ
Ŕ◦+
，ईἡᩣͅꢀիᜇၵꢫꢬŔጵɟ ො៖ꢔᶴտ᥅Ŕඝ。ई໐ȜꢀիꢫꢬŔ PFC ො
៖ꢃꢀTHD øӶ
ࡈ
ꢭ෯。PFC MOS Ŕ៖ၯ٬ꢀዿꢀ
ἡŔᅂ⒖ୢ
ࣞ
ꢀ26ꢀᐠЊ。ࣞ
ꢀ27ꢀЊŔ᠏Ԫꢅἡو
ͥꢃᤚЖꢅꢮᅷϚŔ
ࣚ
ൺො៖⛾ş✈ THDꢀøӶ ࡈ
Ŕࣚ
ൺො៖+Ŕ࿎ტ。 1.5
1.2
0.9
0.6
PO: 90 W
Input Voltage: 90 VAC
PFC Inductor: 460 mH
CS Resistor: 0.15 W
0.3
0
0
0.0014
0.0028
0.0042
0.0056
0.0069
0.0083
Time (Seconds)
Fixed On−time with THD Optimizer
Fixed On time
ꢆꢇ27.ꢇԪꢬἡ
و
ꢊꢩ✈ꢁ⛽ꢩ✈ THDꢇꢪꢫꢄእΕ⛻ᙱ ٧ᅷ
ꢝŔࣚ
ꢌꢡ៖ŔỂᅂ www.onsemi.cn
13
FAN6920MR
VZCD
10 V
RANGE ꢋꢌ
ͥꢯĮꢀի MOSFETꢀ
ᨙᕎ V ꢀꢀիꢀၓ٬
PFC ⒖ᇡො͓ឍ。ꢝͥ᮸ MOSFETꢀŔ⃯ᥡჵꢇꢰᖅꢱ
VIN
RANGEꢀჵꢇ。
ࣞ
28ꢀЊŔ᠏ V ꢀꢀ
իꢀၓ٬
VIN
RANGE ꢈᑷ (რᢿᖅऐ) Ŕ⒖ᇡᣒএ。
2.1 V
1.75 V
PFC Burst Mode Condition
PFC Normal Mode Condition
RANGE =
Ground
VDS
t
PFCVO
VIN,MAX
RANGE =
Open
VVIN
VVIN−RANGE−L
VVIN−RANGE−H
ꢆꢇ28.ꢇRANGE ჵ௪ꢁ VIN ჵ௪ꢁꢜ+Ŕ₾
ࢾ
ሇ PFC
Gate
t
ꢀꢍꢎꢏꢐ (ZCD ꢋꢌ)
ࣞ
29ꢀЊŔ᠏⇆ꢀἡ᪠ἫŔͥ᮸ᰁष。᪠Ἣѿ் ᪗ዿἫ PFCꢀꢀዿꢲ҉ꢳꢞ⛺Ŕǁ᥅ᑇጜ。֢ꢴ
ࣞ
30，ᄳ PFC MOSꢀ͓ꢵ៖，PFCꢀꢀዿസʈŔꢀ்რ ꢶАᩣϚꢎꢏ。ꢷ
PFC MOSꢀŔ⃯ᥡꢀի PFCꢀꢀዿ⛾ඤ⛿ꢀꢃᔏ៖რ⛻ℝ。⛰ំ ZCDꢀჵ
ꢇꢀիĮnꢆֱꢀի (1.75 Vꢀ͘५Ȝ)，ฑúͭᴁֱꢸ
PFC ᧥ᥡǁ
ח
ÅრថŔრ͓و
。 Inhibit
Time
t
ꢆꢇ30.ꢇPFC ⇆ꢁἡ᪠ἫŔ࿅ꢗỂᅂ
PFC ॷŔꢠᒄ
ୢ PFCꢀᚭļ
ࣀ
ტဘእΕꢹꢔ͓ឍ，Ϲ෦ ZCDꢀჵ ꢇꢀիᒩꢱ෯n 0.2 V (͘५Ȝ)ꢀŔĮꢀၓÅ↠Ἓ PFC
ё✈ѿ்，®ȼᵂ PFC რ͓。
PFC ꢑꢒꢍꢓ UVP ꢈ OVP (INV ꢋꢌ)
FAN6920MRꢀꢐෙ PFCꢀॷᖰŻૺҝƽᒄ。PFCꢀᩣϚ
᪗
ի٬ᴀիෙ
n PFC ॷꢱ͓ꢽꢔ。lꢾध᪗ꢀINV ჵꢇꢀի᪠Ἣၖ̾ൺ，ୢ
ࣞ
31ꢀᐠЊ。ୢ INVꢀჵꢇ ꢀի
ࣀ
᪗ΒტဘእΕꢀn 2.75 VꢀĮn 0.45 Vꢀ✄ ᓡꢿꣀ 70ĂmsꢀŔ֛ᑶ҈៖，ú↠Ἓ OVPꢀ UVPꢀꢀ
ᢿÅꣁՓȼᵂ PFCრ͓。
ꢄꢺᵂრ͓ꢻ╧ईꢍꢎꢏÖ⛻᪗ꢀ，ş✈⛰ꢅͥ
៖。Փş࿒᪠ἫА
ꢯŔᑱЖൺ៖
ࡈ
᥅ꢼЖᣠ෯ t OFF
ZCD ǁ
ח
，?⛽úईᑱЖ៖ (2.5 ms ͘५Ȝ) ֱͥꢸ PFC ᧥ᥡǁ
ח
。 INVꢀჵꢇ⛽ꢇ✈n
ᖅ٬
ᛓ PFCꢀᩣϚꢀի；ꣂ
ᑇጜ PFCꢀᩣϚ OVP/UVPꢀƽᒄ。ෙnᜥꣃᰁჯἫ꣄，
ୢֱ⛿ჵꢇኌՊ，ꢝჵꢇ
͓ឍ PFC რ͓。 0.25 V
PFC Gate
Drive
V O
Debounce
Driver
Time
Q
R
S
0.2 V
1.75 V
2.1 V
ZCD
VAC
VREF (2.5 V)
5
RZCD
V
comp
Error
COMP
Ccomp
INV
C O
2
Lb
Voltage
Detector
3
10 V
S
R
Amplifier
Q
PFC Gate On
1:n
OVP = (V
INV ≥ 2.75 V)
FAN6920MR
UVP = (VINV ≤ 0.45 V)
FAN6920MR
ꢆꢇ29.ꢇ⇆ꢁἡ᪠ἫŔꢊ᮸ᰁष
ꢆꢇ31.ꢇ⇆ꢁἡ᪠ἫŔꢊ᮸ᰁष
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14
FAN6920MR
PFC ꢔꢕꢁꢎ (CSPFC ꢋꢌ)
ई PFCꢀॷრ͓，PFCꢀრ͓ꢀἡꢃ CSPFCꢀჵꢇ
⛺ŔꢀἡዿἫꢀꢈ᪠Ἣ，ၖ✄ईꢝꢀꢈ⛺᪠ἫАŔꢀ
իúꣅꢈꢸꢱᶴꢣ
ࡈ
Ŕᩣֿͅ，⛾Ȝꢀի 0.82 V (͘५Ȝ)ꢀļᶴꢣ。⛰ំ CSPFCꢀჵꢇꢀիꢀnȜꢀ
ի，PFC ᧥ᥡฑúꣁՓ͓ឍ。
AC Input
VCOMP−BO
VCOMP
1.6 V
VVIN−UVP
VVIN−RE−UVP
PFCꢀ໐Ȝრ͓ꢀἡ
ꢃꢀἡዿἫꢀꢈᛓ。ࣞ
32ꢀ ЊŔ᠏ PFC
᧥ᥡ٬
CSPFC ჵꢇꢀիŔἫꢛỂᅂ。 PFC MOS ℠ἡ
VVIN
0.82 V
CSPFC
0 V
2.5 V
VINV
V
INV−BO
1.2 V
OPFC
OPWM
OPFC
Brownout
Protection
Debounce
Brownout
Protection
Hiccup
ꢆꢇ32.ꢇ
و
℠ἡ ꢖꢍꢗꢘ (VIN ꢋꢌ)
Time 100 ms
Mode
ύǿἡꢀի᪠Ἣ，FAN6920MRꢀ
ꢒጜឍꢀ/ꢀ ƽᒄ (ἡꢀի UVP)。
ࣞ
33ꢀЊŔ᠏ឍꢀ/ꢀƽᒄ Ŕꢉꢔ࿅ļỂᅂ。lꢾधş✈ VINꢀჵꢇ᪠Ἣἡᩣͅ
ꢀիꢀၓ，VINꢀჵꢇ᪗ꢀꢈϦի
ࡈ
ꢰᖅꢱἡᩣͅ ꢆꢇ33.ꢇឍꢁ/ꢁꢠᒄŔ࿅ꢗỂᅂ
VDD
V
DD
ᐳ
ᰁჯ (֢ꢴ
ࣞ
1)；ࣀ
ᵄ，V ꢀꢀի⛾ἡᩣͅꢀիᏰᵃ VIN
ᶴ。ᄳἡꢀի⛻ℝ✄ V
ꢀꢀիĮn 1 VꢀŔ៖ᓡ
VIN
ꢿ 100 msꢀ៖，ú↠Ἓ UVPꢀƽᒄၖ✄ COMPꢀჵꢇꢀի
ꢙĭꢱꣀ 1.6 V。ꢃn PFCꢀ᧥ᥡՀՊᶴ᪗ᶴꢣꢤꢥ
Ểᅂ٬
COMPꢀჵꢇꢀի᥅̾ൺ，ꢣĮŔ COMPꢀꢀի úොꢨՔ PFCꢀො៖，
ࣀ
ᵄꢁŔ்ꢛַꢼၖ✄ PFCꢀᩣϚꢀի⛻ℝ。ᄳ INVꢀჵꢇꢀիĮn 1.2 Vꢀ៖，
FAN6920MRꢀúꣁՓȼᵂᐠᣩ PFCꢀ
٬
PWMꢀŔრ͓ᚭ ឍꢀ
ꢀ
AC ᩣͅ
OPWM
OPFC
ļ，DŽꢱ V ꢀꢀիℝꢱ͓ឍꢀի，⌖
ͭᴁ⛺ԧꢱො DD
ꢀի (UVLO)。
↠Ἓឍꢀƽᒄ៖，ᐠᣩრ͓ᚭļध͓ឍၖ✄ V ꢀꢀ
DD
ꢀꢀիꢀ
իꢰꢿ⛽ឍऐ᥅
ࢾ
ꢒͅᐳ
ᰁჯ。⛰ំ V VIN
n 1.3 V (͘५Ȝ)ꢀ✄ V ꢀͭᴁАොꢀի，Փֱꢸ
PWM
٬
PFC ᧥ᥡ。 DD
ꢆꢇ34.ꢇឍꢁ/ꢁꢠᒄŔἫᲟỂᅂ (ᰝꢄၴ✈)
ឍꢀ/ꢀƽᒄŔἫꢛỂᅂୢ
ࣞ
34 ᐠЊ。 www.onsemi.cn
15
FAN6920MR
PFC ꢙꢚꢛꢜ
ꢄᣠଇꢼႆℝĮꢍꢎꢏÖ⛻Ŕѿꢋ，FAN6920MR
PFCꢀᖇЖꢒͅᴧᰁჯᚭļ。ꢷȐꢎꢏℝĮ，PWM
֭ꢢꢀի (VFB) ?ℝĮ。ᄳ V < V
100 msꢀ៖，
ࡈ
Öꢒͅ PFCꢀᴧᰁჯ，V 2.3
2.1
1.9
1.7
1.5
1.3
1.1
0.9
0.7
ᓡꢿ
ꢀᒩꢀꢱ
FB
CTRL-PFC-BM
COMP
V
，PFCꢀᩣϚꢀիԧꢀ。ᄳ INVꢀჵꢇ (V
)
)
COMP-H
INV
⛺Ŕ PFCꢀ֭ꢢꢀիꢆֱ OVPꢀȜꢀի (V
INV-OVP
VOZ
៖，V
ꢀᒩĮꢱ V
OPFCꢀჵꢇრ͓ȼᵂ，
COMP-L，
COMP
PFCꢀᩣϚꢀիრ⛻ℝ。⛰ំ V
ꢀℝꢱ֭ꢢᶴꢣ
ࡈ
ꢀ✄
COMP-H
INV
֢ꢠꢀի (V )ꢀÅ⛻，V
ꢀՓᒩꢀꢱ V
REF
COMP
OPFCꢀúͭᴁრრ͓ᚭļ。ᴧᰁჯ᪠ጜᣟş்
٬ё✈ѿ╧
MOSFETꢀŔრ͓ÅίꢍꢎꢏÖ⛻Ŕრ ͓ ᔿꢋ。
1.2
1.7
2.2
2.7
3.2
3.7
4.2
VVIN(V)
ꢆꢇ36.ꢇVCOMP−H ꢁꢜ⛾ VVIN ꢁꢜሇᣒএ
PWM ꢁᢿ
VINV
Enter PFC Burst Mode
VINV−OVP
HV ꢝꢞꢈꢟꢠꢍꢎ (HV ꢋꢌ)
VREF
HVꢀჵꢇ᪗ꢀꢈꢰᖅꢱἡএᢿ (֢ꢴ
ࣞ
1)。ई ꢀᢿꢄͥꢯꢀꢀի؏҈ꢀᢿŔእΕ⛻，ᄳἡꢀիឝ
ҀАꢀ⁰
ߋ
য៖，FAN6920MRꢀᖰŻꢀꢀἡෙ᮸ V
ꢀꢀꢒጜ̥ꢀ，®ҀᖇЖ
ࡈ
Ŕ؏҈៖ၖई DD
VCOMP
ꢊҢͥლꣁൺᩣϚꢀի。ꢄǑѿꢋ，ई V ꢀꢀի
DD
ꢟ᪗ොꢀիၖꢒͅᵃဘᚭļ+
，ꢝꢀꢀի؏҈ꢀ ᢿú͓ឍÅꢋ؏҈ꢀꢈ⛿ѿꢋ。
VCOMP−H
ࣞ
37ꢀЊŔ᠏ V ꢀꢀի٬࿅
ļꢀἡ I ꢀŔሇᣒ DD
DD
এ。ᄳ V ꢀꢀիĮn V
ꢀ៖，FAN6920MR
VCOMP−L
DD
DD-PWM-OFF
úȼᵂᐠᣩრ͓ᚭļၖ͓ឍ⛽ᆥꢔŔͥ᮸ꢀᢿÅί
࿅ļꢀἡ。᪗ꢝᚭļ，
ზ® V ꢀꢱ V
DD-OFF
ʽᢿእΕ⛻Ŕᩣͅѿ╧。
ࣞ
38ꢀЊŔ᠏ᐳ
ᰁჯᚭ DD-PWM-OFF
ꢀŔ
و
ၖ✄
ί෯ᐳ
ᰁჯꢻ╧ÅℝĮᩣϚ OPFC
ļ៖ V
ꢀի٬᧥ᥡ
ǁח
Ŕ͘५Ểᅂ。 DD
IDD
Normal
Mode
PFC Burst Mode
IDD−OP
ꢆꢇ35.ꢇPFC ᴧᰁჯሇ
IDD−PWM−OFF
IDD−ST
V
ꢀꢃ VINꢀჵꢇꢀիᛓ，ୢ
ࣞ
36ꢀᐠЊ。ꢃ COMP-H
n VINꢀჵꢇ᪗ꢀꢈϦի
ࡈ
ꢰᖅАἡἡᩣͅএᢿ ꢀի，ꢣꢀŔএᢿꢀիú⛿ꢣꢀŔ VINꢀჵꢇꢀի。
VDD
V
ꢀꢷ VINꢀჵꢇꢀիଇί෯，®ꢼЖꢣ
COMP-H
VDD−OFF VDD−PWM−OFF
VDD−ON
ꢀᩣͅꢀի⛻Ŕ PFCꢀᑜἡ
ࣨ
ꢀἡÅίࡊ
ૐ。ୢ ꢀĮn PFC V ，PFCꢀúई͗ᣩꢀএᢿꢀիᩣ
ͅŔꢍꢎꢏÖ⛻҈͓ឍ。
ꢆꢇ37.ꢇVDD ⛾ IDD−OP ሇᣒএ
V
COMP-H
OZ
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16
FAN6920MR
VDD−ON
VDD−PWM−OFF
VDD−OFF
ᒩꢀἡ⛺ԧꢱȜꢀἡ，Ϲúई
ࣚ
ൺზ꣐៖ (200 ns ͘५Ȝ) +
ֱϚ PWM ᧥ᥡǁח
。 IDD−OP
Auxiliary
Winding
IDD−PWM−OFF
IDD−ST
+
VAUX
−
Gate
RDET
DET
10
0.3 V
+
RA
ꢆꢇ38.ꢇᐳ
ᰁჯᚭꢗ៖ VDDꢇꢁꢜꢁ᧥ᥡǁꢎŔꢈꢉỂᅂ IDET
VDET
ꢡꢢꢛꢜꢣꢠꢈ PFC-ON/OFF ꢤꢥ (FB ꢋꢌ)
FAN6920MR
−
ൂᰁჯ
ꢒ⛰ᵅℝĮߋ
যѿꢋ (ꢌୢ：რ͓ᔿ ꢋ)。᪗͓ឍ៖ᛓЖÅᨙᕎ FBꢀჵꢇꢀիᛓრ͓
ꢻ╧。ᄳᩣϚꢎꢏί៖，FBꢀꢀիú
ࣀ
ᴁॷ֭ꢢָ҈ ꢆꢇ40.ꢇỂᜇ᪠Ἣ
ℝĮၖ✄ t
ꢀᅷАზ。ई t
(ꢃ FBꢀꢀ
Start to
detect valley
OFF-MIN
OFF-MIN
Idet flow out
from DET pin
V
AUX
ի̾ൺ)ꢀ
，ú↠Ἓͥ᮸ᜇၵ᪠ἫꢀᢿÅ᪠Ἣ PWMꢀრ ͓Ŕᜇၵ⃯ᥡꢀի。᪠ἫАᜇၵǁ
ח
៖，FAN6920MR úᩣϚ⛰ꢅ PWMꢀ᧥ᥡǁ
ח
Åᖅრ͓ၖრថŔრ ͓
و
。 0 V
Delay time and
then trigger
gate signal
VDET
᪗ꢍꢎꢏÖ⛻Ŕൂᰁჯᚭļ
٬
ᜇၵ᪠Ἣ，ꢀ ⁰
ߋ
য
ꢒጜᑉีŔᜇၵრ͓ DCMꢀᚭļၖꢒ⛰ᵅℝ Įრ͓ᔿꢋÅൾ▐ᣔꢀŔ꣎ᕂᜨ╧。FBꢀჵꢇꢀի⛾
Valley
switching
0 V
t
ꢀ៖ሇᣒএୢ
ࣞ
39ꢀᐠЊ。ୢࣞ
39ꢀᐠЊ， ꢀꢭ෯ꢱ 2.25 ms，ꢝ៖ई
OPWM
OFF-MIN
tOFF
FAN6920MRꢀ
෦ t OFF
440 Hzꢀრ͓ꢻ╧ꢫꢬ。
֢ꢴ
ࣞ
1ꢀ٬
ࣞ
2，FBꢀჵꢇꢀի⛽ꢇ✈nᖅᴁॷ֭ ꢢǁ
ח
Å̾ൺ᧥ᥡො៖，✄ꣂ்̾ൺ PFCꢀॷ࿅ ļᰁჯ。
ꢆꢇ41.ꢇᜇၵ᪠ἫŔἫᲟỂᅂ
ꢂ/ꢨꢓꢩꢪꢫꢬꢭꢮꢯꢰ(DET ꢋꢌ)
ဘእΕ⛻，ᄳꢀ⁰რ͓͓ឍ៖，®᧥ᥡǁ
ח
⛻ℝ t
OFF−MIN
ẟАრ͓͓ឍᣩ⛰ꢅზ꣐。ꢝზ꣐ꢃᖇЖ
ࡈ
Ŕͥ᮸ꢈ ᚍზ꣐Å֪
ࣀ
᧥ᥡꢀꢈ٬᧥ᥡ
ꢱ⁰ᥡꢀ C ꢀᐠොꢨ 2.25 ms
ISS
Ŕ PWMꢀრ͓͓ឍზ꣐⛿。n⛽
Ŕἡᩣͅ ꢀի⛻，ꢝზ꣐úई PWMꢀꢼἡꢀၓLj
ŔÖ⛻ ⛿⛽
ŔᣠଇᩣϚѿ╧。ᩣͅꢀի꣑ꢀ，͖⛿Ŕᣠ ଇᩣϚѿ╧?꣑ꢀ，꣒᠏
ࣀ
ꢄϽॷꢳꢞ⛺ឝҀŔꢀի ᣔꢀ✄ú⛿ᣔꢀŔ⛺ԧ╧ꢀዿꢀἡ。ईLj
ზ ꣐⛻⛿Ŕ໐Ȝꢀዿꢀἡᣔꢀ。ᵄ，ईᩣϚѿ╧Lj
ŔእΕ⛻，ꢀիএᢿ⛺Ŕ໐Ȝრ͓ꢀἡꢔᶴĮիএ ᢿ⛺ŔĮ。
ࣀ
ᵄ，ꢄş⛽
ᩣͅꢀի⛻ŔᣠଇᩣϚѿ PFC On
PFC Burst
Mode
20.5 ms
5 ms
VCTRL−PFC
DVCTRL
VFB
2.1 V (VN
)
1.2 V (VG)
╧ᖅꢬ，ᖇЖ
ࡈ
ꢹꢔᛓ CSPWMꢀჵꢇŔ V ᖇЖ PWM რ͓ꢀἡ。
ꢀÅ
LIMIT
ꢆꢇ39.ꢇVFB ꢁꢜ⛾ tOFF−MIN ៖ሇᣒএ
֢ꢴ
ࣞ
42，ई PWMꢀრ͓Ŕ t ꢀ，ᩣͅꢀիឝ ON
ꢀ⛺Ŕꢀի⛾Ͻॷꢳꢞ
ꢦꢧꢏꢐ (DET ꢋꢌ)
FAN6920MRꢀŔ࿅ļᰁჯꢄൂᰁჯ៖，t
ꢃൂᰁჯꢀᢿ̾ൺ (ᨙᕎ FBꢀჵꢇꢀիꢀၓ)。ई
ꢀ+
，ú↠Ἓͥ᮸ᜇၵ᪠Ἣꢀᢿ。ईꢀPWM რ͓Ŕ t ꢀ，ᄳָի
ࡈ
ꢀዿꢀἡꢀꢱ⇆៖，ָ ի
ࡈ
ꢀዿ٬
PWMꢀრ͓Ŕඤ⛿ꢀრ
៖ꢃᔏ。ᄳ PWMꢀრ͓Ŕ⃯ꢀի⛻ℝ៖，ꢃnꢲ҉ꢳꢞ⛾Ͻॷꢳ
ҀАϽॷꢳꢞ✄ꢲ҉ꢳꢞ V
AUX
OFF-MIN
ꢀիᏰᵃᶴ。ꢷȐᩣͅꢀիଇ，ꢲ҉ꢳꢞ V
ꢀ⛺
AUX
Ŕ֭ꢀի?ָᅷᣔꢀ。FAN6920MRꢀꣂ்ꢙĭ DET
ჵꢇꢀիၖἡϚꢀἡ I 。ꢃnꢀἡ I ꢀ⛾ V ꢀꢀ
t
OFF-MIN
DET
DET
AUX
OFF
իLj⛰ꢨ，FAN6920MRꢀई t ꢀᨙᕎᵄꢀἡᛓ
ON
PWMꢀრ͓Ŕꢼἡꢀၓ®ꢒጜꢀ/ĮիএᢿŔ᪗ѿ╧
ጵɟ。
ꢞ꣏
ר
，ꢲ҉ꢳꢞ V ꢀ⛺Ŕꢀի?ú⛻ℝ。⛰ំ
ꢀꢀիՓꢃ DET
DET
AUX
ꢷȐᩣͅꢀիଇ，ꢲ҉ꢳꢞ V
ꢀ⛺Ŕ֭᠀ꢀի
AUX
V
AUX
ꢀꢀիꢃᔏၖ⛻ℝꢱꢎȜ，V
⛾ꢀἡ I
ᛓꢄꢣĮŔꢀၓ。
ꢀ⛰ᨗ?ָᅷᣔꢀ，ၖ✄ᖇЖ
ࡈ
෦ V LIMIT
DET
ჵꢇ (֢ꢴ
ࣞ
40)ꢀꢙĭၖ✄ FAN6920MRꢀᄚЖἡϚꢀἡ 。FAN6920MRꢀ֭᠀ၖᶴꢣᵄ I ꢀꢀἡ。ୢᵄ
I
DET
DET
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17
FAN6920MR
PWM ॷŔꢠᒄ
R
ꢀꢀꢈ®ꢲ҉ꢳꢞꢰᖅА DETꢀჵꢇ。࿅ӛ
DET
ᛓꢝ R
ꢀꢀꢈÅ꣓ᅷᵃ̾Ŕ V
ꢀꢀի，®꣔
LIMIT
DET
VDD ꢋꢌꢫꢓꢗꢘ (OVP)
ꢀ᪗իƽᒄѿ்
ई V ꢀꢀիꢀnࡈ
Öၴѻൺ ꢀի៖ꢺᵂ
ࡈ
Öᔿय。ෙn V OVP，ᖇЖࡈ
úꣁՓ DD
ȼᵂᐠᣩრ͓ᚭļၖꢒͅ҈ቂ૭ƽᒄ。
ר
᪗ѿ╧᪗ꢀἡƽᒄŔᑠᤏ꣕。CSPWMꢀჵꢇ⛺ V
DD
DD
Ŕ I
ꢀἡ⛾ V
ꢀիŔሇᣒএୢ
ࣞ
43 ᐠЊ。 DET
LIMIT
+ ƪV
ǒ Ǔƫ ń R
NA ń NP
IDET
(eq. 1)
IN
DET
ꢴꢵꢫꢶꢗꢘꢈꢷꢸꢗꢘꢹꢺ (RT ꢋꢌ)
ࣞ
44ꢀ᠏͗ᣩ RTꢀჵꢇͥ᮸ᰁषŔ͘५ၴ✈ꢀᢿ。ୢ ͖ꢆ，V ꢀ᠏ᩣͅꢀի；N ꢀ᠏ꢲ҉ꢳꢞŔӽᝐ；N
IN
᠏ϽॷꢳꢞŔӽᝐ。
A
P
ࣞ
ᐠЊ，ሲൺꢀἡ I ꢀ® RTꢀჵꢇἡϚ，ࣀ
ᵄ RTꢀჵꢇ RT
⛺Ŕꢀի V ꢀ
᪗ I ꢀꢀἡꢎÅꢀꢈ (ꢃ NTCꢀꢀꢈ ٬
R ꢀꢀꢈꢞᏰ)ꢀᅷА。ୢ RTꢀჵꢇꢀիĮn 0.8 V A
ၖᓡꢿ⛰ᶕ֛ᑶ҈៖，ú↠Ἓ҈ቂ૭ƽᒄၖ✄ȼ
RT
RT
V
AUX
0 V
ᵂᐠᣩ PFC
٬
PWM Ŕრ͓。 RTꢀჵꢇဘŔļ✈᠏᪗ NTCꢀꢀꢈൾ▐᪗ꢁƽᒄ
ၖ✄ᖰŻ᮸ƽᒄꢆֱÅҀᄚƽᒄ。࿅ӛ
ş✈ ᮸ꢆֱꢀᢿ (ୢᡖꢏꢑ)ꢀ෦ RTꢀჵꢇᒩĮၖ↠ἛᖇЖ
ࡈ
҈ቂ૭ƽᒄ。
V
DET
VAUX = −[V x (Na / Np)]
IN
DET pin voltage is clamped
during tON period.
ဘ，᮸ƽᒄꢆֱꢹꢔᇋ↠Ἓ，꣒᠏
ࣀ
ꢄ͖ ဘ✈nईტဘእΕ⛻ƽᒄꢀ⁰
ߋ
য。ࣀ
ᵄ，⛰ំ RT ჵꢇꢀիĮn 0.5 V，RTꢀჵꢇŔƽᒄ֛ᑶ҈៖Փꢄ
ꢯꢄꣀ 110 ms。
0 V
tON
tOFF
OPWM
ෙn᪗ꢁƽᒄ，ꢃnꢁႆ⛽úꣁՓָ，
ࣀ
ᵄ RT ჵꢇꢀի
ᨗ꣘ፂ⛻ℝ。
ᛓ OTPꢀŔ֛ᑶ҈៖ၴᄳ ⛽ꢹꢔᇋ֭ၴ。ꢄꢺᵂ
ࣀ
ᄚḢἫ꣄Ö (ꢌୢ：꣙ ꢀἫ꣄)ꢀई RTꢀჵꢇ⛺ꢆֱ⛽ቐᄳŔƽᒄ，ई RTꢀჵ
ꢇꢆֱꢀիꢀn 0.5 Vꢀ៖，ƽᒄ֛ᑶ҈៖ꢄꢯꢄꣀ
10 ms。ꢄꢋ RTჵꢇ⛺Ŕ⛽ቐᄳꢆֱ，ΊҀ⛰ꢅ⛾
ꢆꢇ42.ꢇVAUX ꢁ VIN +Ŕꢅ
ߋ
900
800
700
600
500
400
300
NTC
٬
R ꢀꢈၖŔ෯Ȝꢀ (ꢌୢ：1000 pF)。 A
FAN6920MR
Adjustable Over−Temperature Protection
and External Protection Triggering
= 100 mA
IRT
Auto−
Recovery
Protection
12
RT
Debounce
Time
0.8 V
0.5 V
NTC
RRT
100 ms
10 ms
0
100
200
300
(mA)
400
500
600
ꢆꢇ44.ꢇ
ᛓ᪗ꢂꢠᒄ IDET
ꢑꢒꢫꢓꢗꢘ (DET ꢋꢌ)
֢ꢴ
ࣞ
45，ई PWMꢀָիࡈ
ꢀዿꢀ，ꢲ҉ꢳ ꢞ⛺Ŕꢀի᪗ᴁॷꢳꢞ֭᠀，
ࣀ
ᵄ DETꢀჵꢇ⛺Ŕԃ ൺꢀի⛾ᩣϚꢀիᏰᵃᶴ。FAN6920MRꢀ
ई t ꢀὨ ꣖៖
ꢉᨗꢝԃൺꢀիꢀၓÅꢒጜᩣϚ᪗իƽᒄ。 ꢆꢇ43.ꢇIDET ꢁἡ⛾ VLIMIT ꢁꢜሇᣒএ
ꢱꢲꢳꢃ (LEB)
ᄳᖅ PFCꢀ PWMꢀრ͓៖，ꢃnᩣϚlᥡꢑŔ֭
OFF
ױ
ቂ૭்ꢛ⛾ѿ╧ MOSFETꢀŔ C ꢀúꢍļ✈，ࣀ
OSS
ꢝ t ꢀὨ꣖៖✈nᇝ5᥅ PWMꢀָի
ࡈ
⃯ꢀዿŔ ᵄईꢀἡዿἫꢀꢈ⛺ú⛿ꢀի໐。ꢄꢺᵂꢝ໐
⛿，ͥꢯꢁЭẟὨ꣖៖ၖ✄ლ꣗ई CSPWMꢀჵꢇ
٬
GNDꢀ+ꢯ⛰ꢅ෯ RCꢀỂࡈ
(ꢌୢ：100ĂW， 470 pF)。
OFF
ꢀիᔏ。ꢉᨗԃൺꢀիꢀၓ⛾ͥ᮸Ȝꢀի 2.5 V
ꢒጜᶴꢣ
，⛰ំ↠Ἓƽᒄ，FAN6920MRꢀՓꢒͅ ҈ቂ૭ƽᒄ。
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18
FAN6920MR
VO
ᖇЖ
ࡈ
ꢉ✈꣒ҝو
ꢉᨗយẵईᩣϚ᪗իÖ ⛻ᖰŻᇋƽᒄ。ƽᒄꢀիꢀၓ
ꢃ᮸ꢀꢈϦիࡈ
R ꢀ
٬
R ꢀ+ᶴ̾ൺ。DETꢀჵꢇ⛺Ŕԃൺꢀի
ꢃ⛻ FB
A
DET
Ϸჯ：
RA
ǒ
Ǔ
VDET + NA ń NS VO
RDET ) RA
(eq. 2)
PWM
Gate
Open−Loop
Short Circuit / Overload
ꢆꢇ46.ꢇFB ჵ௪რ▏、ʽᢿꢁ᪗ᩍꢠᒄ
֢ꢴ
ࣞ
46；ई FAN6920MRꢀ᮸，FBꢀჵꢇꢰᖅꢱ ꢐꢀ꣏
ࡈר
ᡖꢏꢑŔꢁꢀᥡ。ईͥ᮸，FBꢀჵꢇ᪗ꣀ 5 kW Ŕꢀꢈꢰᖅꢱͥ᮸ꢑꢯꢀի。
ꢷȐᩣϚꢎꢏଇ，ᩣϚꢀի⛻ℝ✄Ͻॷֿ⛺ꢐ
ꢀ꣏
ࡈר
ᡖꢏꢑŔ∬ꢀἡ?ί෯。FBꢀჵꢇꢀի᪗ͥ ᮸ꢑիଇ。ईრ▏、ᩣϚʽᢿ᪗ꢏÖ⛻；ꢝ∬
ꢀἡꢒ⛰ᵅί෯ၖ✄ FBꢀჵꢇꢀիꣅͥ᮸ꢑꢯꢀիᒩ
ꢀ。ᄳ FBꢀჵꢇꢀիꢀn 4.2 VꢀŔ៖ᓡꢿ 50 msꢀ៖，
ú↠Ἓ FB ჵꢇƽᒄ。
t
NA
VAUX
VO x
N
S
t
ꢻꢓꢼꢽ (UVLO，VDD ꢋꢌ)
֢ꢴ
ࣞ
37ꢀ٬
ࣞ
38，ො٬
͓ឍ V ꢀȜꢀիϦЋ NA
NP
PFC_ VO
x
DD
NA
RA
ࣚ
ൺई 18 Vꢀ٬
10 V。ई؏҈，ƽᓡꢀ (V ꢀꢀ DD
VO x
VDET
x
Sampling
Here
NS RDET + RA
)ꢀꢃ HVꢀ؏҈ꢀἡ̥ꢀ，DŽꢱ V ꢀꢀիАොꢀ
DD
ի。ईᩣϚꢀի⛺ԧꢱൺꢀիၖ®ꢲ҉ꢳꢞ
ױ
V DD
ꢀꢈꢸꢀ்+Э，ꢝƽᓡꢀᆥƽᓡ V ꢀꢀիꢀ
DD
tOFF
Blanking
்✈nᚭļ。ᄳ V ꢀꢀիАොꢀի៖，ୢई
DD
V
ꢀꢀիℝꢱ͓ឍꢀի V
ꢀ+Эᤊꢆֱƽ
DD-PWM-OFF
DD
ᒄ，FAN6920MR ú؏҈ᐠᣩრ͓ᚭļ。
0.3 V
t
ꢆꢇ45.ꢇᩣꢝ᪗ꢜ᪠ἫŔ࿅ꢗỂᅂ
ᙲǁ
†
ꢄꢘ০ꢎ
FAN6920MRMY
᪗ᩍꢠᒄ (OLP) ᰁჯ
࿅ꢗꢂႆීꢭ
−40°C ೃ +105°C
ꢮ᎕
Shipping
ቂ૭
16ꢃჵ௪෯५᎕ (SOP)
2500 / Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
www.onsemi.cn
19
MECHANICAL CASE OUTLINE
PACKAGE DIMENSIONS
SOIC−16, 150 mils
CASE 751BG−01
ISSUE O
DATE 19 DEC 2008
SYMBOL
MIN
NOM
MAX
1.35
A
A1
b
1.75
0.25
0.51
0.25
0.10
0.33
0.19
c
D
E
E1
e
9.80
5.80
3.80
9.90
6.00
10.00
6.20
4.00
E1
E
3.90
1.27 BSC
h
0.25
0.40
0º
0.50
1.27
8º
L
θ
PIN#1 IDENTIFICATION
TOP VIEW
D
h
q
A
c
e
b
L
A1
END VIEW
SIDE VIEW
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC MS-012.
Electronic versions are uncontrolled except when accessed directly from the Document Repository.
Printed versions are uncontrolled except when stamped “CONTROLLED COPY” in red.
DOCUMENT NUMBER:
DESCRIPTION:
98AON34275E
SOIC−16, 150 MILS
PAGE 1 OF 1
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