TL1451A Datasheet, PDF (2/29 Pages) Texas Instruments – DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS

TL1451A
DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999
functional block diagram
2 DTC ¹¹
VCC RT CT
92
1
ERROR ^{IN + 14} +
AMPLIFIER 2 _{IN –} ¹³ _–
12
2 FEEDBACK
1 FEEDBACK ⁵
SCP ¹⁵
1/2 Vref
12 kΩ
ERROR ^{IN + 3 +}
AMPLIFIER 1 _{IN –} ⁴ _–
1 DTC ⁶
Oscillator
Reference
Voltage
170 kΩ
R
S
UVLO
R
PWM
COMP
PWM
COMP
COMPONENT COUNT
Resistors
65
Capacitors
8
Transistors
105
JFETs
18
10 _{2 OUTPUT}
16 _REF
7 _{1 OUTPUT}
8
GND
2
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