NXP Semiconductors AN10907, Примечание к применению

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AN10907 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved.
Application note Rev. 1 — 28 December 2010 69 of 82
NXP Semiconductors
AN10907
TEA1613T resonant power supply control IC
SNSBURST (pin 3)
If a high-impedance value is chosen for the resistor divider on SNSBURST, the
connecting tracks of the resistors should be kept short to avoid disturbance (refer to
Section 9.5.2 and Section 9.5.3 ).
11.2 Starting/debugging partial circuits
When starting a newly built application for the first time or when an error is observed
during operation, it is possible to activate parts of the circuit step by step. This enables
errors to be located more easily and an evaluation to be performed under conditions that
restrict influences from other circuit parts.
The following list provides a step-by-step sequence for debugging:
1. IC only, with protection disabled
2. HBC with protection disabled and variable DC input voltage
3. HBC with protection enabled
The best approach is to check the HBC converter first with external supplies for SUPIC
and V
BOOST
.
Fig 54. PCB layout connecting SGND, PGND, CFMIN, RFMAX and SNSCURHBC
001aal476
CFMIN RFMAX
Rcc C
SUPHS
1 SN
SOU
T
/PF
C
ON
2 SN
SF
B
3
S
NS
BURS
T
4 SN
SB
OOST
5 SU
PIC
7 SU
PEG
8
GA
TE
LS
TEA1613
9 N
C
10 SU
PH
V
RCP
RO
T 2
0
S
S
HBC/
E
N 1
9
CFMI
N 1
7
RFMA
X
1
8
S
NS
CURHB 1
5
NC 1
4
HB 1
3
SU
PH
S 12
GA
TEH
S
11
CFMIN RFMAX
Rcc C
SUPHS
1 SN
SOU
T
/PF
C
ON
2 SN
SF
B
3
S
NS
BURS
T
4 SN
SB
OOST
5 SU
PIC
7 SU
PEG
8
GA
TE
LS
TEA1613
9 N
C
10 SU
PH
V
RCP
RO
T 2
0
S
S
HBC/
E
N 1
9
CFMI
N 1
7
RFMA
X
1
8
S
NS
CURHB 1
5
NC 1
4
HB 1
3
SU
PH
S 12
GA
TEH
S
11
CFMIN RFMAX
Rcc C
SUPHS
1 SN
SOU
T
/PF
C
ON
2 SN
SF
B
3
S
NS
BURS
T
4 SN
SB
OOST
5 SU
PIC
7 SU
PEG
8
GA
TE
LS
TEA1613
9 N
C
10 SU
PH
V
RCP
RO
T 2
0
S
S
HBC/
E
N 1
9
CFMI
N 1
7
RFMA
X
1
8
S
NS
CURHB 1
5
NC 1
4
HB 1
3
SU
PH
S 12
GA
TEH
S
11
1 SN
SOU
T
/PF
C
ON
2 SN
SF
B
3
S
NS
BURS
T
7
SUPREG
8
GA
TE
LS
TEA1613
9 N
C
10 SU
PH
V
RCP
RO
T 2
0
S
S
HBC/
E
N 1
9
RFMA
X
1
8
NC 1
4
HB 1
3
SU
PH
S 12
GA
TEH
S
11
6 PGN
D
S
G
ND 1
6
4 SN
SB
OOST
5 SU
PIC
CFMI
N 1
7
S
NS
CURHB 1
5