UCC28220-Q1_15 Datasheet, PDF (16/27 Pages) Texas Instruments – INTERLEAVED DUAL PWM CONTROLLER WITH PROGRAMMABLE MAXIMUM DUTY CYCLE

UCC28220-Q1
SLUS789 – MARCH 2008
TYPICAL CHARACTERISTICS (continued)
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V_OH AND V_OL
vs
TEMPERATURE
I_OUT = 10 mA
SOFT-START CHARGE CURRENT
vs
TEMPERATURE
-70
R_CHG = 10.2 kW
-80
V_REF – V_OUT (V_OH)
-90
-100
V_OL
-110
-120
-50
130
-25 0
25 50 75 100 125
T_J – Temperature – °C
Figure 14.
SOFT-START DISCHARGE CURRENT
vs
TEMPERATURE
-130
-50
1M
-25 0
25 50 75 100 125
T_J – Temperature – °C
Figure 15.
PROGRAMMING RESISTORS
vs
SWITCHING FREQUENCY
120
110
100
100k
R = R _CHRG
DISRG
D_MAX = 75%
90
10k
80
70
1k
-50 -25 0
25 50 75 100 125
10k
100k
1M
10M
T_J – Temperature – °C
f_S – Switching Frequency – Hz
Figure 16.
Figure 17.
16
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