Efficiency; Thermal Performance - Analog Devices ADP1071-1EVALZ User Manual

ADP1071-1EVALZ
1
4
CH1 10.0V
CH4 2.0A Ω
Figure 14. Peak Diode Voltage Stress on a −15 V Rail at 32 V

EFFICIENCY

Table 3 shows the typical efficiency measurement under
different load conditions. Note that the minimal load of the
5.5 V rail and the 24 V rail are kept at 0.01 A to maintain
adequate load regulation.
Table 3. Efficiency Measurement at Input Voltage (V
OUT1 Voltage, OUT1 Current,
V (V) I (A)
OUT1 OUT1
25.72 0.01
27.27 0.01
28.12 0.01
25.71 0.4
24.89 0.4
25.65 0.4
User Guide
M10.0µs A CH1 37.6V
T 100.00ns
Input and Full
DC
Load
IN
OUT2 Voltage,
V (V)
OUT2
5.36
5.11
5.00
5.29
5.45
5.30

THERMAL PERFORMANCE

Figure 15 shows the typical thermal image of the evaluation
board at different operating conditions.
Figure 15. Thermal Image of the
) = 24 V
OUT2 Current, OUT3 Voltage,
I (A) V
OUT2
0.01 14.83
0.5 15.59
0.5 18.18
0.5 17.55
0.01 15.34
0.5 15.82
Rev. 0 | Page 7 of 13
ADP1071-1 at 48 V
No Airflow, and 0.5 Hour Soaking Time
OUT3 Current,
(V) I (A)
OUT3 OUT3
0.2
0.2
0
0
0.2
0.2
UG-1384
Input, Full Load,
DC
Efficiency
(%)
85.33
82.61
72.48
84.18
86.50
84.79