Analog Devices ADP2442-EVALZ User Manual page 7

Evaluation Board User Guide
1
LOAD STEP 500mA
4
2
CH1 100mV B CH2 10V
W
500mA Ω
CH4
Figure 10. Load Transient, V
1
LOAD STEP 500mA
4
2
B
CH1 100mV
CH2 5V
W
CH4 500mA
Figure 11. Load Transient, V
ENABLE
3
V
OUT
1
SW SW
2
B
CH2 10V
CH1 2V
W
B
CH3 5V
W
ENABLE, CHANNEL 1 VOUT, AND CHANNEL 2 SW
Figure 12. Startup, V = 24 V, V
IN
V
OUT
SW SW
M200µs A CH4 720mA
T 71.2%
= 24 V, V = 5 V, 500 mA Step
IN OUT
V
OUT
SW
M200µs A CH4 800mA
Ω
T 71.4%
= 12 V, V = 5 V, 500 mA
IN OUT
M1ms A CH1 1.32V
T 23.2%
= 5 V, Load 5 Ω, PWM Mode
OUT
3
1
2
B
CH1 2V
CH3 5V B
Figure 13. Shutdown, V
1
2
3
CH1 50mV
CH3 2V
Figure 14. Clock Synchronization, V
110
90
70
50
30
10
–10
–30
–50
–70
–90
1k
Figure 15. Bode Plot, V
Rev. 0 | Page 7 of 12
ENABLE
V
OUT
SW SW
CH2 10V M1ms A CH1
W
T 52.4%
W
= 24 V, V = 5 V, Load 5 Ω
IN OUT
V
OUT
SW
SYNC
B CH2 10V M1µs
W
B
T 50.4%
W
= 24 V, V
IN
10k 100k
FREQUENCY (Hz)
= 24 V, V = 5 V, f = 500 kHz, Load = 1 A,
IN OUT SW
f = 37 kHz, Phase Margin = 55
CO
UG-456
1.52V
A CH3 2.8V
= 5 V
OUT
200
160
120
80
40
0
–40
–80
–120
–160
–200