参数资料
型号: L6918DTR
厂商: STMICROELECTRONICS
元件分类: 稳压器
英文描述: SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PDSO28
封装: SO-28
文件页数: 27/35页
文件大小: 431K
代理商: L6918DTR
33/35
L6918 L6918A
STATIC PERFORMANCES
Figure 24 shows the demo board measured efficiency versus load current in steady state conditions without air-
flow at ambient temperature.
Figure 24. System Efficiency
Figure 25 shows the mosfets temperature versus output current in steady state condition without any air-flow
or heat sink. It can be observed that the mosfets are under 100
°C in any conditions. Load regulation is also re-
ported from 10A to 110A.
Figure 25. Mosfet Temperature and Load Regulation.
DYNAMIC PERFORMANCES
Figure 26 shows the system response to a load transient from 0A to 110A. The output voltage is contained in
the
±50mV range. Additional output capacitors can help in reducing the initial voltage spike mainly due to the
ESR.
Figure 26. 110A Load Transient Response.
55
60
65
70
75
80
85
90
0
10203040
50
60
70
80
90
100
110
Output Current [A]
Efficiency
[%]
30
40
50
60
70
80
90
100
110
0
1020
30405060708090 100 110
Output Current [A]
Temperature
[
o
C]
High-Side MOS
Low-Side MOS
1.350
1.370
1.390
1.410
1.430
1.450
1.470
0
1020 30 4050 6070 8090 100 110
Output Curr ent [A]
Vout
[V]
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