Datasheet

ADP1877HC-EVALZ
Rev. A | Page 4 of 12
TEST RESULTS
T
A
= 25°C.
0.9
1.0
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0.01 0.1 1 10 100
LOAD (A)
EFFICIENCY
08460-002
V
IN
= 12V
PWM 1.8V
PSM 1.8V
PWM 1.05V
PSM 1.05V
Figure 2. Efficiency
0.15
0.10
0.05
0
–0.05
–0.10
–0.15
5 7 9 11 13 15
V
IN
(V)
LINE REGULATION (%)
08460-003
V
OUT1
= 1.8V @ 5A
V
OUT2
= 1.05V @ 5A
Figure 3. Line Regulation
0.20
0.25
0.15
0.10
0.05
0
–0.05
–0.10
–0.15
–0.20
–0.25
0 3 6 9 12 15
LOAD (A)
LOAD REGULATION (%)
08460-004
V
IN
= 12V
V
OUT1
= 1.8V
V
OUT2
= 1.05V
Figure 4. Load Regulation
08460-005
CH1 5.00V CH2 5.00V
CH3 20.0mV CH4 20.0mV
M 1.00µs A CH1 4.10V
3
1
4
2
T
SW1
SW2
V
OUT1
RIPPLE
V
OUT2
RIPPLE
Figure 5. Output Ripple, 13 A Load
08460-006
CH3 20.0mV CH4 5.00A Ω
M 100µs A CH4 7.00A
3
4
T
OUTPUT1 RESPONSE
STEP LOAD 1.5A TO 13A
V
IN
= 12V
Figure 6. Step Load Transient, V
OUT1
08460-007
CH3 20.0mV CH4 5.00A Ω
M 100µs A CH4 12.1A
3
4
T
OUTPUT2 RESPONSE
STEP LOAD 8A T0 13A
V
IN
= 12V
Figure 7. Step Load Transient, V
OUT2