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PDF AN11013 Data sheet ( Hoja de datos )
| Número de pieza | AN11013 | |
| Descripción | GreenChip III TEA1753 integrated PFC and flyback controller | |
| Fabricantes | NXP Semiconductors | |
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AN11013
GreenChip III TEA1753 integrated PFC and flyback controller
Rev. 1 — 21 March 2011
Application note
Document information
Info Content
Keywords
GreenChip III, TEA1753, PFC, flyback, high efficiency, adaptor, notebook,
PC power
Abstract
The TEA1753 is a member of the new generation of PFC and flyback
combination controller ICs, used for efficient switched mode power
supplies. Using the TEA1753 and TEA1703 provides a solution for
applications needing an extremely low Standby power mode. It has a high
level of integration which allows the design of a cost-effective power
supply using the minimum number of external components. The TEA1753
is fabricated in a Silicon On Insulator (SOI) process, enabling it to operate
at a wide voltage range.
1 page  
NXP Semiconductors
AN11013
GreenChip III TEA1753 integrated PFC and flyback controller
F1
mains
inlet
LF1
R1 LF2
CX1
R2
-
BD1
+
L1
C1
L2
97
C2
12
1
D1 BC1
C3 R6
R6B
R18
R5
C8
R19 D3
R5A
D2
R9 R8
R12
R7
C5
Q1
R11
C6 R10
C4
Q9
R31
R43
switch signal
R42
Q8
R14
D4
Q2
R13 C9
R16
R17
switch signal
C23 R45
R16A
C10
R22
R15
D5
R23A
D23A
C13 C14
R23
U1
PFCTIMER 14 15 9
13 10
16
VCC
1
PFCSENSE
11
PFCDRIVER
12
TEA1753
FBAUX
4
FBCTRL
3
R27
PFCAUX
8
7
2 5 6 PFCCOMP
R3
A
B
C
D
E
F
R28 R29
Q10
C25
OPTIONAL
see section 5.2, 5.2.1
R26
4
C24 C22 R4 C21 C20
U2A-1
C19
3
RT2
NTC
R25 C17
C18
Fig 1. Application schematic (part1)
019aab985
AN11013
Application note
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 21 March 2011
© NXP B.V. 2011. All rights reserved.
5 of 48
5 Page 
NXP Semiconductors
AN11013
GreenChip III TEA1753 integrated PFC and flyback controller
8. When the flyback has reached its nominal output voltage, the VCC supply of the IC is
taken over by the auxiliary winding. If the flyback feedback loop signal is missing, the
time-out protection at the FBCTRL pin is triggered, both converters are switched off,
VCC drops to Vth(UVLO) and the IC restarts at step 3 of the start-up cycle. This is the
safe restart cycle.
IHV
VCC
VINSENSE
PFCCOMP
LATCH
PROTECTION
PFCSENSE
PFCDRIVER
FBSENSE
FBDRIVER
FBCTRL
soft start
soft start
Vstartup
Vth(UVLO)
Vtrip
Vstart(VINSENSE)
Ven(PFCCOMP)
Ven(LA TCH)
Vto(FBCTRL)
VOSENSE
VO
charging VCC
capacitor
starting
normal
converters operation
protection
restart
Vstart(fb)
014aaa744
Fig 5. Start-up sequence at low mains voltage
The charge time of the soft-start capacitors can be chosen independently for the PFC and
the flyback, based on their values.
AN11013
Application note
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 21 March 2011
© NXP B.V. 2011. All rights reserved.
11 of 48
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AN11013.PDF ] | |
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