參數(shù)資料
型號(hào): L6919CD
廠商: STMICROELECTRONICS
元件分類: 穩(wěn)壓器
英文描述: SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO28
封裝: SO-28
文件頁(yè)數(shù): 21/32頁(yè)
文件大小: 558K
代理商: L6919CD
L6919C
28/32
Figure 24 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 100C in any conditions. Load regulation is also re-
ported from 10A to 45A.
Figure 24. Mosfet Temperature and Load Regulation
DYNAMIC PERFORMANCES
Figure 25 shows the system response to a load transient from 3A to 45A. 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 25. 3A to 45A Load Transient Response
Figure 26 shows the system response to a VID transient from 1.200V to 0.800V and vice versa at minimum load (3A).
Figure 26. Dynamic VID Response
20
30
40
50
60
70
80
90
100
0
5
10
15
20
25
30
35
40
45
Output Current [A]
MOS
Temperature
[
o
C]
High-side MOS Q2
High-side MOS Q4
Low -side MOS Q1
Low -side MOS Q3
1.170
1.180
1.190
1.200
1.210
1.220
1.230
1.240
1.250
0
5
10
15
20
25
30
35
40
45
Output Current [A]
Vout
[V]
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