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L6717ATR датащи(PDF) 2 Page - STMicroelectronics

номер детали L6717ATR
подробное описание детали  Dynamic phase management
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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Contents
L6717A
2/57
DocID024465 Rev 1
Contents
1
Typical application circuit and block diagram . . . . . . . . . . . . . . . . . . . . 5
1.1
Application circuit
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
1.2
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
2
Pins description and connection diagrams . . . . . . . . . . . . . . . . . . . . . . 9
2.1
Pin descriptions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
2.2
Thermal data
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14
3
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
3.2
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
4
Device description and operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5
Hybrid CPU support and CPU_TYPE detection . . . . . . . . . . . . . . . . . . 19
5.1
PVI - parallel interface
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19
5.2
PVI start-up
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19
5.3
SVI - serial interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21
5.4
SVI start-up
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21
5.4.1
Set VID command
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.4.2
PWROK de-assertion
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.4.3
PSI_L and efficiency optimization at light-load
. . . . . . . . . . . . . . . . . . . 24
5.4.4
HiZ management
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.4.5
Hardware jumper override - V_FIX
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6
Power manager I2C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.1
Power manager commands
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26
6.1.1
Overspeeding command (OVRSPD) . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.1.2
Overvoltage threshold adjustment (OV_SET)
. . . . . . . . . . . . . . . . . . . . 30
6.1.3
Switching frequency adjustment (FSW_ADJ)
. . . . . . . . . . . . . . . . . . . . 30
6.1.4
Droop function adjustment (DRP_ADJ) . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.1.5
Power management flags
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.2
Dynamic phase management (DPM) . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32


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