AN10881
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© NXP B.V. 2011. All rights reserved.
Application note
Rev. 2 — 26 September 2011
13 of 102
NXP Semiconductors
AN10881
TEA1713 resonant power supply control IC with PFC
Fig 2.
Block diagram TEA1713
coa073
1.2
M
Ω
1.2
M
Ω
1.2
M
Ω
SNSMAINS
MainsReset
MainsUV
SoftStart
min
Ton
max
Ton
14
k
Ω
9.8 M
Ω
62 k
Ω
3.3
μ
F
47
μ
A
60
μ
A
−
39.....+39
μ
A
GmAmplifier
33 nA
800 mV
1
×
5.8 V
2.5 V
120
μ
A
5.6 V
2.2 V
1.0 V
Enable
ENABLE DETECTION
EnablePfc
3.2 V
3.2 V
8.0 V
ClampEndSoftStart
40
μ
A
120
μ
A
40
μ
A
1360
μ
A
440
μ
A
5
μ
A
42
μ
A
FREQUENCY
CONTROL
HBC
D
C
B
A
E
F
33 nA
33 nA
RSoStPfct
RCurPfc
CSoStPfct
45 nA
5.8 V
1 nF
2.5 V
0.4 V
Demag
ValleyPfc
DRIVE CONTROL
SPIKE
FILTER
0.1 V
0.5 V
0.52 V
50 mV
COMPPFC
SPIKE FILTER
BoostOv
BoostSCProt
BoostOv level = 2.63 V
BoostStart = 2.3 V
BoostUvp = 1.6 V
SNSBOOST
SUPHV
SNSAUXPFC
AuxPfc
SNSCURPFC
open pin
detection
PGND
SupReg
SSHBC/EN
Disable supply
Enable supply
0 to >2 V
GATEPFC
Boost
SUPREG
1.05 V
UV-Clamp
3.0 V
0.89 V
1.15 V
1.25 V
3.5 V
GatePfcDig
Ton
SoftStopEnd
OCPfc
I = c*V
2
8.4 V
demagnetized
V
Rect
/N
V
Rect
V
Boost
(V
Boost
−
V
Rect
)/N
V
aux,demag
0
0
magnetized
Demagnetization
VALLEY SWITCHING
l
TrPfc
AuxPfc
DrPfc
GatePfc
Valley
(= top for detection)
0
off
on
t
VALLEY
DETECTION
frequency limit
125 kHz
SuplcChargeLow = 1.1 mA
SuplcCharge = 5.1 mA
HV START-UP SOURCE
CONTROL
0.65 V
10.9 V
5.4 mA
SUPIC
SupReg
EnableSupReg
reduced
current
SuplcShort
startlevel Hv = 22 V
startlevel Lv = 17 V
stoplevel = 15 V
SupRegUvStart
startlevel = 10.7 V
SupRegUvStop
stoplevel = 10.3 V
SupHvPresent
CSUPREG
Protection
HBC softstart reset
0
Vfmax(SSHBC)
VSSHBC/EN
Vfmin(SSHBC)
0
fmin
fHB
fmax
t
off
on
fmax
forced
fast
sweep
slow sweep
regulation
regulation
Vss(hf-lf)(SSHBC)
PFCsense
Iswitch
OCP_lvl
OCP_lvl
PFC driver
Start Rdy
0
0
0
0
0
Softstart, Softstop
Softstart
Softstop
0
I
SNSFB
V
open
= 8.4 V
0.66 mA
I
fmin
V
RFMAX
2.2 mA
I
fmax
0
0
V
SSHBC
= 8 V
260
μ
A
I
OLP
V
OLP
= 7.7 V
V
fmin
= 6.4 V
V
fmax
= 4.1 V
V
clamp,fmax
= 3.2 V
V
SNSFB
8 mA
I
clamp,max
2.5 V
typ
= V
fmax
1.5 V
typ = 0.6
×
V
fmax
passed
0
no
yes
Vhigh(RCPROT)
Vlow(RCPROT)
restart request
VRCPROT
t
restart time
RESTART TIMER
014aaa864
001aal029
001aal040
001aal064
