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TL494 Datenblatt(PDF) 2 Page - Texas Instruments

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Teilenummer TL494
Bauteilbeschribung  PULSE-WIDTH-MODULATION CONTROL CIRCUITS
PDF  19 Pages
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Hersteller  TI [Texas Instruments]
Direct Link  http://www.ti.com
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TL494 Datenblatt(HTML) 2 Page - Texas Instruments

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GND
VCC
Reference
Regulator
C1
Pulse-Steering
Flip-Flop
C1
1D
DTC
CT
RT
PWM
Comparator
+
−
Error Amplifier 1
≈ 0.1 V
Dead-Time Control
Comparator
Oscillator
OUTPUT CTRL
(see Function Table)
0.7 mA
E1
C2
E2
+
−
Error Amplifier 2
1IN+
1IN−
2IN+
2IN−
FEEDBACK
REF
6
5
4
1
2
16
15
3
13
8
9
11
10
12
14
7
Q1
Q2
≈ 0.7 V
TL494
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS074E – JANUARY 1983 – REVISED FEBRUARY 2005
FUNCTION TABLE
INPUT TO
OUTPUT FUNCTION
OUTPUT CTRL
VI = GND
Single-ended or parallel output
VI = Vref
Normal push-pull operation
FUNCTIONAL BLOCK DIAGRAM
2



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