88PG8226A1-NFE1C000 Marvell, 88PG8226A1-NFE1C000 Datasheet - Page 34

• Manufacturer Part Number: 88PG8226A1-NFE1C000
• Manufacturer: Marvell

V
V
V
I
BUCK1
BUCK2
BUCK
LOAD
V
I
IND
SW
4.4
Doc. No. MV-S103563-00 Rev. C
Page 34
V
V
V
I
V
V
I
OUT1
Figure 28: Fast Load Rise Time
OUT
Figure 27: PWM Output Ripple
IN
BUCK1
BUCK2
IN
BUCK
= 5.0V
= 5.0V
= 500 mA to 1.5A
= 1.5A
= 1.2V
= 1.2V
= 1.2V
Voltage
Load Transient Waveforms
4.4.1 Step-Down Regulator
100 ms/DIV
2
μ
I
V
V
s/DIV
OUT2
88PG82XX
Datasheet
BUCK1(P-P)
BUCK2(P-P)
= 1.5A
C
t
= 7.3 mV (Note)
= 8.2 mV (Note)
RISE
OUT
= 13.1 A/μs
= 22 μF
Document Classification: Proprietary Information
5V/DIV
100 mV/DIV
1A/DIV
1A/DIV
10 mV/DIV
10 mV/DIV
V
I
BUCK
LOAD
V
I
IND
SW
V
V
I
OUT
IN
BUCK
= 5.0V
Figure 29: Slow Load Rise Time
= 500 mA to 1.5A
= 1.2V
2
μ
s/DIV
C
t
RISE
OUT
Copyright © 2008 Marvell
= 1.2 A/μs
= 2 μF
April 23, 2008, 2.00
5V/DIV
100 mV/DIV
1A/DIV
1A/DIV