AIC1574 AIC [Analog Intergrations Corporation], AIC1574 Datasheet - Page 6

• Manufacturer Part Number: AIC1574
• Description: 5-bit DAC, Synchronous PWM Power Regulator with Triple Linear Controllers
• Manufacturer: AIC [Analog Intergrations Corporation]

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TYPICAL PERFORMANCE CHARACTERISTICS
30
25
20
15
10
120
100
-5
5
0
80
60
40
20
0
200k
1k
Fig. 3
Internal Compensation Gain of PWM Error Amplifier
Fig. 5
Fig. 1 Soft Start Interval with 4 Outputs and P
22 C
VCC=12V
C
300k
90 C
UG1
V
OUT2
=C
-40 C
Supply Current vs. Frequency
LG1
400k
10k
Switching Frequency (Hz)
=C
V
OUT4
Frequency (Hz)
500k
PGOOD
600k
SS
100k
700k
C=1.5nF
C=4.7nF
800k
V
V
C=680pF
OUT3
OUT1
C=3.3nF
1M
900k
C=0
GOOD
1M
100k
10M
10k
1M
1k
10k
Fig. 2
Fig. 4
Fig. 6
Over Load
Applied
R
T
Pull Up to 12V
Soft Start Initiates PWM Output
R
T
Resistance vs. Frequency
Switching Frequency (Hz)
Over Current ON Inductor
SS
100k
SS
R
T
AIC1574
Pull Down to GND
VDAC=3.5V
VDAC=1.3V
Inductor
Current 5A/div
VDAC=2V
Fault
1M
6