TL1451_08 Datasheet, PDF (5/14 Pages) Unisonic Technologies – DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS

TL1451
„ TEST CIRCUIT
S1
C_PE
0.47μF
LINEAR INTEGRATED CIRCUIT
Test
Input ^VCC ^{= 5V}
R_L
4.7kΩ
16 15 14 13 12 11 10 9
UTC TL1451
12345678
R_L
4.7kΩ
OUT1
OUT2
C_T
330pF
„ TIMING DIAGRAM
Oscillator Triangle Waveform
Error Amplifier Output
Dead-Time Input Voltage
Short-Circuit Protection
Comparator Input Voltage
PWM Comparator Output Voltage
R_T
10kΩ
Test
Input
Output Transistor Collector
Waveform
Protection Enable
Terminal Waveform
Short-Circuit Protection
Comparator Output
Power Supply Voltage
2.8V TYP
* Protection Enable Time, tpe = (0.051 × 10⁶ × Cpe) in seconds
2.0V
1.6V
1.4V
1.25V
H
L
Dead Time 100%
H
L
0.6V
0V
Tpe*
H
L
3.6V
0V
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R103-011.D