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| TFS757 Datasheet, PDF (16/36 Pages) Power Integrations, Inc. – Combined Two-Switch Forward and Flyback Power Supply Controllers with Integrated High Voltage MOSFETs | |||
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TFS757-764HG
VIN
Minimum Supply Current to
VDDH = 1 mA
HiperTFS VDDH
CONTROL
HD
R
HS
L
D
FB
R1
VHIGH_BIAS
C1
C2
CR1
R1_MAX = VHIGH_BIAS âVDDH
1 mA
VHIGH_BIAS_(MIN) = VAUX_(MIN) = 14 V
Main Transformer
EN
DSB
BP
VAUX
G
S
C3
Standby Transformer
PI-5881-082610
Figure 18. High-Side Bias.
VOUT
VOUT(OV) = (15 mA Ã R1) + V1 + 1
R1
VBIAS
IC1
(CTR = 1)
V1
IOVP ⥠15 mA
HiperTFS VDDH
CONTROL
HD
R
HS
L
D
FB
EN
DSB
BP
G
S
PI-5879-111710
Figure 19. Latching Output OVP.
16
Rev. C 02/11
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