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L6910G Datasheet(PDF) 19 Page - STMicroelectronics

Part # L6910G
Description  ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION
PDF  26 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6910G Datasheet(HTML) 19 Page - STMicroelectronics

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L6910G
Figure 22. Efficiency vs Output Current Source
Mode
Figure 23. 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 24, 25 and 26, 27 show the efficiency of the
L6910G in sink and source mode, up to 17A both for
DDRI and DDRII memories.The measurements have
been realized with the 15A demo board. (See pag.11 )
Figure 24. Efficiency vs Output Current Sink
Mode
Figure 25. Efficiency vs Output Current Sink
Mode
Figure 26. Efficiency vs Output Current Source
Mode
Figure 27. Efficiency vs Output Current Source
Mode
8
60
65
70
75
80
85
90
95
1
23456
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
1
23456
7
8
60
65
70
75
80
85
90
95
1
23456
7
Output Current (A)
Vin=12V
Vin=2.5V
Vcc=12V
Vout=1.25V
Fsw=200KHz
60
65
70
75
80
85
90
95
12
34
56
7
8
Vin=12V
Vin=2.5V
Vcc=12V
Vout=1.25V
Fsw=200KHz
Output Current (A)
60
65
70
75
80
85
90
95
12
34
56
7
8
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
1
3
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
1
3
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
1
3
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
13
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
13
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
13
5
7
9
11
13
15
17
40
50
60
70
80
90
100
13
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
1
3
5
7
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
1
3
5
7
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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