TL494_15 Datasheet, PDF (7/33 Pages) Unisonic Technologies – VOLTAGE MODE PWM CONTROL CIRCUIT

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7.13 Typical Characteristics
TL494
SLVS074G – JANUARY 1983 – REVISED JANUARY 2015
100 k
40 k
100
V_CC = 15 V
T_A = 25°C
90
−2%
10 k
−1%
80
0.001 µF
70
4k
0%
0.01 µF
60
V_CC = 15 V
ΔV_O = 3 V
T_A = 25°C
1k
0.1 µF
50
400
40
(1)
Df = 1%
30
100
C_T = 1 µF
20
40
10
10
1k
4 k 10 k
40 k 100 k 400 k 1 M
R_T − Timing Resistance − Ω
xxx
Frequency variation (Δf) is the change in oscillator frequency
xxx
that occurs over the full temperature range.
Figure 1. Oscillator Frequency and Frequency Variation
vs
Timing Resistance
0
1
10
100 1 k 10 k 100 k 1 M
f − Frequency − Hz
Figure 2. Amplifier Voltage Amplification
vs
Frequency
80
4
60
3
40
2
20
1
0
0
10
20
V_I − Input Voltage − (mV)
Figure 3. Error Amplifier Transfer Characteristics
0
0
10k
100k
1M
f − Frequency − (Hz)
Figure 4. Error Amplifier Bode Plot
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