Analog Devices DC3205A Demo Manual page 6

DEMO MANUAL DC3205A
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN
2.25V TO
5.5V
1M
249k
100
f = 2MHz, TDK TFM252021ALMAR22MTAA
SW
90
80
70
60
50
40
30
20
10
0
0.001 0.01
Figure 6. Efficiency vs Load
6
PV
IN1
22µF 1µF
LTC3314A
PV
IN2
22µF 1µF
EN1
AV
IN
RT
1µF
EN2
FB2
MODE/SYNC
AGND
Figure 5. LTC3314A 2-Phase 2MHz 8A Buck Typical Application Schematic
FC MODE
Burst MODE
PULSE-SKIP MODE
0.1 1 8
I (A)
LOAD
DC3205A F06
BST1
220nF
220nH
SW1
FB1
BST2
220nF
220nH
SW2
PGOOD1
PGOOD2 NC
PGND
I
LOAD
5A/DIV
I
L1
5A/DIV
I
L2
5A/DIV
V
OUT
50mV/DIV
LOAD STEP: 0.1A TO 6A IN 1µs
Figure 7. Load Step Response in Forced Continuous Mode
10nF
100k
47µF 22µF
100k
47µF 22µF
100k
DC3205A F05
Load Transient Response,
Forced Continuous Mode
DC3205A F07
10µs/DIV
V
OUT
1V
8A
Rev. 0