L6717ATR datasheet(31/57 Pages) STMICROELECTRONICS

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L6717A

Power manager I2C

See

Table 12 and Table 13 for details about the codification of the command and the data

stream.

6.1.2

Overvoltage threshold adjustment (OV_SET)

This command allows to adjust the overvoltage threshold independently for CORE and NB

Sections. The threshold is adjustable, from the default value of +250 mV, in 200 mV steps

up to +800 mV above the reference.

See

Table 12 and Table 14 for details about the codification of the command and the data

stream.

6.1.3

Switching frequency adjustment (FSW_ADJ)

This command allows to adjust the switching frequency for the system in +/-10% steps

across the main level defined by the OSC pin. Modifying the switching frequency may result

in benefit for the application from a thermal point of view.

See

Table 12 and Table 15 for details about the codification of the command and the data

stream.

Table 13. OVRSPD command - offset codification (1) (2)

Offset is added with an OTF VID transition above the already programmed VID.

Maximum regulated output voltage is internally limited to 2.8 Vmax/0.5 Vmin regardless the offset would let

the IC regulate to higher/lower voltage.

Data

stream

[4:8]

Offset to

reference

[V]

Data

stream

[4:8]

Offset to

reference

[V]

Data

stream

[4:8]

Offset to

reference

[V]

Data

stream

[4:8]

Offset to

reference

[V]

00000

0.00

01000

0.40

10000

0.80

11000

1.20

00001

0.05

01001

0.45

10001

0.85

11001

1.25

00010

0.10

01010

0.50

10010

0.90

11010

1.30

00011

0.15

01011

0.55

10011

0.95

11011

1.35

00100

0.20

01100

0.60

10100

1.00

11100

1.40

00101

0.25

01101

0.65

10101

1.05

11101

1.45

00110

0.30

01110

0.70

10110

1.10

11110

1.50

00111

0.35

01111

0.75

10111

1.15

11111

1.55

Table 14. OVP_SET command - threshold codification

Data stream [5:6] and [7:8]

OVP threshold [V]

+250mV (Default)

+400mV

+600mV

+800mV

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