TEA1504 查看數據表（PDF） - Philips Electronics
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TEA1504 Datasheet PDF : 20 Pages
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Philips Semiconductors
GreenChip™ SMPS control IC
BLOCK DIAGRAM
Preliminary specification
TEA1504
handbook, full pagewidth
REF Vaux
Vi
8
6
1
on/off
Vaux
MANAGEMENT
14 1 kΩ
OOB
START-UP
CURRENT SOURCE
TEA1504
5.5 V
burst mode
stand-by
9
CTRL
13
DEM
SAMPLE
AND
HOLD1
OVER
TEMPERATURE
PROTECTION
SAMPLE
AND
HOLD2
PULSE WIDTH
MODULATOR
inverting
error comparator
amplifier
DEMAGNETIZATION
MANAGEMENT
NEGATIVE
CLAMP
OSCILLATOR
duty cycle limiting
signal
11
2
3
GND
HVS
n.c.
R
Q
S
6Ω 7
6Ω 4
driver
stage
DS
DRIVER
OVER CURRENT
PROTECTION
LEADING EDGE
BLANKING
5 Isense
FREQUENCY
CONTROL
10
12
n.c. n.c.
MGS569
Fig.1 Block diagram.
1999 Dec 07
3
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