LP8754 datasheet(35/52 Pages) TI2

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LP8754

www.ti.com

SNVS861A – FEBRUARY 2014 – REVISED AUGUST 2014

Bits

Field

Type

Default

Description

Reserved

R/W

6:4

ADD_PH_B0

R/W

100

ADD_PH_B0(1)

Sets the level on which a phase is added.

000 = Reserved

001 = Reserved

010 = 0.5 A * No. of Active Phases

011 = 0.6 A * No. of Active Phases

100 = 0.7 A * No. of Active Phases

101 = 0.8 A * No. of Active Phases

110 = 0.9 A * No. of Active Phases

111 = 1.0 A * No. of Active Phases

Reserved

R/W

2:0

SHED_PH_B0

R/W

010

SHED_PH_B0(1)

Sets the level of phase shedding.

000 = 0.3 A * No. of Active Phases

001 = 0.4 A * No. of Active Phases

010 = 0.5 A * No. of Active Phases

011 = 0.6 A * No. of Active Phases

100 = 0.7 A * No. of Active Phases

101 = 0.8 A * No. of Active Phases

110 = Reserved

111 = Reserved

(1)

ADD_PH_B0 and SHED_PH_B0 values must be chosen so that the resulting hysteresis is a minimum of 100 mA and ADD_PH_B0 >

SHED_PH_B0.

7.6.19 SEL_I_LOAD

Address: 0x21

Reserved

BUCK_LOAD_CURR[10:8]

Reserved

LOAD_CURRENT_SOURCE[2:0]

Bits

Field

Type

Default

Description

Reserved

R/W

6:4

BUCK_LOAD_

000

BUCK_LOAD_CURR

CURR[10:8]

This register reports 3 MSB bits of the magnitude of the average load current of the

selected Buck Converter. See LOAD_CURR register.

Reserved

R/W

2:0

LOAD_CURRENT_

R/W

000

LOAD_CURRENT_SOURCE

SOURCE[2:0]

These bits are used for choosing the Buck Converter whose load current will be

measured.

000 = Converter 0 load current will be measured.

001 = Converter 1 load current will be measured.

010 = Converter 2 load current will be measured.

011 = Converter 3 load current will be measured.

100 = Converter 4 load current will be measured.

101 = Converter 5 load current will be measured.

110 = Master total load current will be measured.

111 = Reserved

7.6.20 LOAD_CURR

Address: 0x22

BUCK_LOAD_CURR[7:0]

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