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TEA1507 (IC701)
Block Diagram
1
V CC
M-level
S1
2
GND
3
−1
CTRL
2.5 V
burst
detect
TEA1507
PINNING
SYMBOL PIN
V
1
supply voltage
CC
GND
2
ground
CTRL
3
control input
DEM
4
input from auxiliary winding for
demagnetization timing, OVP and OPP
I
5
programmable current sense input
sense
DRIVER
6
gate driver output
HVS
7
high voltage safety spacer, not
connected
DRAIN
8
drain of external MOS switch, input for
start-up current and valley sensing
SUPPLY
MANAGEMENT
internal
UVLO start
supply
VOLTAGE
CONTROLLED
OSCILLATOR
FREQUENCY
CONTROL
OVER-
TEMPERATURE
PROTECTION
POWER-ON
RESET
UVLO
MAXIMUM
ON-TIME
PROTECTION
DESCRIPTION
START-UP
CURRENT SOURCE
VALLEY
LOGIC
100 mV
PROTECTION
LOGIC
DRIVER
LEB
S
Q
blank
R
Q
OCP
short
winding
handbook, halfpage
V CC
GND
CTRL
DEM
Fig.3 Pin configuration.
33
clamp
OVER-
VOLTAGE
I ss
0.5 V
soft
start
S2
0.75 V
OVERPOWER
PROTECTION
MGU230
1
8
DRAIN
2
7
HVS
TEA1507
3
6
DRIVER
4
5
I sense
MGU231
32JW-73E
8
DRAIN
7
HVS
n.c.
4
DEM
6
DRIVER
5
I sense
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