Typical Performance Characteristics - Analog Devices Linear ADI Power DC3091 Manual

TYPICAL PERFORMANCE CHARACTERISTICS

V
IN
2.25V TO
5.5V
Efficiency, V
IN
All Modes
100
90
80
70
60
50
40
30
20
10
0
0.001 0.01
f = 2MHz,
SW
TDK TFM252012ALMAR22MTAA
Figure 5. Output1 Efficiency vs Load
PV
IN1
22µF 1µF
1M
EN1
SSTT1
249k
0.015µF
PV
IN2
22µF 1µF
1M
EN2
SSTT2
249k
0.015µF
AV
IN
1µF RT
MODE/SYNC
Figure 4. LTC3312SA Dual 6A Buck Typical Application Schematic
= 3.3V, V = 1.2V
OUT
FC MODE
Burst Mode OPERATION
PULSE SKIP MODE
0.1 1 6
I (A)
LOAD
dc3091a F05
DEMO MANUAL DC3091A
220nH
SW1
LTC3312SA
FB1
PGOOD1
330nH
SW2
FB2
PGOOD2
AGND PGND
dc3091a F04
Efficiency, V
100
90
80
70
60
50
40
30
20
10
0
0.001
f
SW
MURATA DFE252012F-R33M
Figure 6. Output2 Efficiency vs Load
10nF
140k
47µF
×2
100k
100k
22nF
107k
47µF
×2
41.2k 100k
= 3.3V, V = 1.8V
IN OUT
All Modes
FC MODE
Burst Mode OPERATION
PULSE SKIP MODE
0.01 0.1 1
I (A)
LOAD
dc3091a F06
= 2MHz,
V
OUT1
1.2V
6A
V
OUT2
1.8V
6A
8
Rev. 0
5