AN10881
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© NXP B.V. 2011. All rights reserved.
Application note
Rev. 2 — 26 September 2011
77 of 102
NXP Semiconductors
AN10881
TEA1713 resonant power supply control IC with PFC
10.3.3.4
Both OVP and UVP disabled
When neither OVP or UVP functionality is required, a fixed voltage between 2.35 V and
3.5 V can be applied to SNSOUT. This can be obtained from a resistive divider that is
referenced to the SUPREG.
Fig 51. Example of disabling the OVP function of SNSOUT
001aal060
100
μ
A
1.5 V
SNSOUT
SUPREG = 10.9 V
1N4148
8.2 k
Ω
2.7 k
Ω
V
AUXILIARY
5
TEA1713
OVP
latched shutdown
3.5 V
COMP
UVP
protection timer
2.35 V
COMP
HOLD HBC
1.1 V
COMP
HOLD PFC
0.4 V
COMP
Fig 52. Example of disabling both the UVP and the OVP functions of SNSOUT
001aal061
100
μ
A
1.5 V
SNSOUT
SUPREG = 10.9 V
91 k
Ω
33 k
Ω
5
TEA1713
OVP
latched shutdown
3.5 V
COMP
UVP
protection timer
2.35 V
COMP
HOLD HBC
1.1 V
COMP
HOLD PFC
0.4 V
COMP
