TL1451A_15 Datasheet, PDF (2/36 Pages) Texas Instruments – DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS

TL1451A
DUAL PULSEĆWIDTHĆMODULATION CONTROL CIRCUITS
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SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999
functional block diagram
2 DTC ¹¹
VCC RT CT
92
1
ERROR ^{IN+ 14} +
AMPLIFIER 2 _IN– ¹³ _–
2 FEEDBACK ¹²
5
1 FEEDBACK
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
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10 _{2 OUTPUT}
16 _REF
7 _{1 OUTPUT}
8 _GND
2
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