Circuit-, IC descriptions and list of abbreviations
EN 157LX9000R 9.
IC7313
2000 Dec 05 4
Philips Semiconductors Preliminary specification
GreenChipII SMPS control IC TEA1507
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BLOCK DIAGRAM
ndbook, full pagewidth
SUPPLY
MANAGEMENT
internal
supply
UVLO start
M-level
V
CC
1
2
3
GND
S1
CTRL
FREQUENCY
CONTROL
VOLTAGE
CONTROLLED
OSCILLATOR
LOGIC
LOGIC
OVER-
VOLTAGE
PROTECTION
OVERPOWER
PROTECTION
short
winding
soft
start
S2
OVER-
TEMPERATURE
PROTECTION
SQ
R
UVLO
Q
MAXIMUM
ON-TIME
PROTECTION
POWER-ON
RESET
−1
VALLEY
TEA1507
100 mV
clamp
DRIVER
START-UP
CURRENT SOURCE
0.75 V
0.5 V
5
I
sense
6
DRIVER
MGU230
4
DEM
8
DRAIN
7
HVS
n.c.
OCP
LEB
blank
I
ss
2.5 V
burst
detect
Fig.2 Block diagram.
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