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L6758A Scheda tecnica(PDF) 2 Page - STMicroelectronics

Il numero della parte L6758A
Spiegazioni elettronici  DPM - dynamic phase management
Download  42 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6758A Scheda tecnica(HTML) 2 Page - STMicroelectronics

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Contents
L6758A
2/42
DocID023298 Rev 2
Contents
1
Typical application circuit and block diagram . . . . . . . . . . . . . . . . . . . . 4
1.1
Application circuit
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
1.2
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
2
Pin description and connection diagrams . . . . . . . . . . . . . . . . . . . . . . . 6
2.1
Pin description
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
2.2
Thermal data
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12
3.2
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12
4
VR12 serial data bus and IC configuration . . . . . . . . . . . . . . . . . . . . . . 15
5
Device description and operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6
Output voltage positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.1
Multi-phase section: phase # programming
. . . . . . . . . . . . . . . . . . . . . . .
21
6.2
Multi-phase section: current reading and current sharing loop
. . . . . . . .
22
6.3
Multi-phase section: defining load-line . . . . . . . . . . . . . . . . . . . . . . . . . . .
23
6.4
Multi-phase section: IMON information
. . . . . . . . . . . . . . . . . . . . . . . . . .
23
6.5
Single-phase section: current reading
. . . . . . . . . . . . . . . . . . . . . . . . . . .
24
6.6
Single-phase section: defining load-line . . . . . . . . . . . . . . . . . . . . . . . . . .
24
6.7
Dynamic VID transition support
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
25
6.8
DVID optimization: REF/SREF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
25
7
Output voltage monitoring and protection . . . . . . . . . . . . . . . . . . . . . . 27
7.1
Overvoltage
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27
7.2
Overcurrent
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28
7.2.1
Multi-phase section
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.2.2
Overcurrent and power states
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7.2.3
Single-phase section
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29


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