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L6910 Datenblatt(PDF) 21 Page - STMicroelectronics

Teilenummer L6910
Bauteilbeschribung  ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION
PDF  29 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6910 Datenblatt(HTML) 21 Page - STMicroelectronics

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L6910 - L6910A
Figure 24. Efficiency vs Output Current Source
Mode
Figure 25. Efficiency vs Output Current Sink
Mode
For very big systems (e.g. servers), the DDR memory
termination can require much higher currents, in the
range of 10A-15A and more.
Figures 26, 27 and 28, 29 show the efficiency of the
L6910 in sink and source mode, up to 17A both for DDRI
and DDRII memories.The measurements have been re-
alized with the 15A demo board. (See pag.11 )
Figure 26. Efficiency vs Output Current Sink
Mode
Figure 27. Efficiency vs Output Current Sink
Mode
Figure 28. Efficiency vs Output Current Source
Mode
Figure 29. Efficiency vs Output Current Source
Mode
8
60
65
70
75
80
85
90
95
12
3
4
5
6
7
Output Current (A)
Vin=12V
Vin=2.5V
Vcc=12V
Vout=1.25V
Fsw=200KHz
8
60
65
70
75
80
85
90
95
12
3
4
5
6
7
8
60
65
70
75
80
85
90
95
12
3
4
5
6
7
Output Current (A)
Vin=12V
Vin=2.5V
Vcc=12V
Vout=1.25V
Fsw=200KHz
60
65
70
75
80
85
90
95
1
2
34
56
78
Vin=12V
Vin=2.5V
Vcc=12V
Vout=1.25V
Fsw=200KHz
Output Current (A)
60
65
70
75
80
85
90
95
1
2
34
56
78
Vin=12V
Vin=2.5V
Vcc=12V
Vout=1.25V
Fsw=200KHz
Output Current (A)
Vin=12V
Vin=2.5V
Vcc=12V
Vout=1.25V
Fsw=200KHz
Output Current (A)
Vin=12V
50
60
70
80
90
100
13
5
7
9
11
13
15
17
Vin=2.5V
Vin=12V
Vcc=12V
Vout=1.25V
Fsw=200KHz
Output Current (A)
Vin=12V
50
60
70
80
90
100
13
5
7
9
11
13
15
17
Vin=2.5V
Vin=12V
Vcc=12V
Vout=1.25V
Fsw=200KHz
Output Current (A)
50
60
70
80
90
100
13
5
7
9
11
13
15
17
Vin=2.5V
Vin=12V
Vcc=12V
Vout=1.25V
Fsw=200KHz
Output Current (A)
Vin=2.5V
Vin=12V
Vcc=12V
Vout=1.25V
Fsw=200KHz
Output Current (A)
40
50
60
70
80
90
100
1
3
5
7
9
11
13
15
17
Vin=12V
Vin=1.8V
Vcc=12V
Vout=0.9V
Fsw=200KHz
Output Current (A)
40
50
60
70
80
90
100
1
3
5
7
9
11
13
15
17
Vin=12V
Vin=1.8V
Vcc=12V
Vout=0.9V
Fsw=200KHz
40
50
60
70
80
90
100
1
3
5
7
9
11
13
15
17
40
50
60
70
80
90
100
1
3
5
7
9
11
13
15
17
Vin=12V
Vin=1.8V
Vcc=12V
Vout=0.9V
Fsw=200KHz
Output Current (A)
50
60
70
80
90
100
13
57
9
11
13
15
17
Vout=12V
Vcc=12V
Vout=1.25V
Fsw=200KHz
Vout=2.5V
Output Current (A)
50
60
70
80
90
100
13
57
9
11
13
15
17
Vout=12V
Vcc=12V
Vout=1.25V
Fsw=200KHz
Vout=2.5V
Output Current (A)
50
60
70
80
90
100
13
57
9
11
13
15
17
Vin=12V
Vout=0.9V
Fsw=200KHz
Vin=12V
Vin=1.8V
Output Current (A)
50
60
70
80
90
100
13
57
9
11
13
15
17
Vin=12V
Vout=0.9V
Fsw=200KHz
Vin=12V
Vin=1.8V
50
60
70
80
90
100
13
57
9
11
13
15
17
Vin=12V
Vout=0.9V
Fsw=200KHz
Vin=12V
Vin=1.8V
Output Current (A)



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