AIC1570 Datasheet, PDF (6/18 Pages) Analog Intergrations Corporation – 5-bit DAC, Synchronous PWM Power Regulator with LDO and Linear Controller

AIC1570
FAULT
SS
Over Load
Applied
Inductor Current
10A/div
0 to 400mA Load Step
V_OUT2
FIG. 6 Over-Current Operation on Inductor
FIG. 7 Transient Response of Linear Regulator
V_OUT1
5A to 12A Load Step
2.0V_DC
V_OUT3 (2mV/div)
1A to 2A Load Step
FIG. 8 Transient Response of PWM Output
FIG. 9 Transient Response of Linear Controller
90
80
DACOUT=2.0V
TA=25°C
70
60
50
40
30
20
10
0 -0.5 -0.4 -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
FIG. 9 DACOUT Voltage Accuracy (%)
100
Power MOSFET : CEB6030L
95
90
Vo=2.8V
85
80
75 _VIN=5V
Vo=2V
70
Switching Frequency = 200KHz Vo=1.3V
65
0
2
4
6
8 10 12 14 16 18 20
FIG.10 Efficiency vs. Load Current (A)
6