STPM098C datasheet(98/110 Pages) STMICROELECTRONICS

98 / 110 page

Current consumption

Table 78. Mean current consumptions in loop operating mode

Symbol

Parameter

Test condition

Min Typ Max Unit

ISTBY_VCC1

Current consumption on VCC.

No PWM switching.

VCC = 5 V

-40 °C ≤ Tj ≤ 25 °C

Default configuration and VR_EN1 = VR_EN2 = 0 V

100

ISTBY_VCC2

Current consumption on VCC.

No PWM switching.

VCC = 5 V

25°C ≤ Tj ≤ 150 °C

Default configuration and VR_EN1 = VR_EN2 = 0 V

100

Note:

•

Current consumption on VCC when PWM are switching can be estimated by incrementing the STBY

consumption by the extra current needed by the n-th switching PWM buffer to drive the external

capacitive load.

IPWMn=CLoadfswVREF2

CFILT

Where fsw is the phase`s switching frequency and Cload is the input capacitance of DrMOS PWM pin.

•

Indicated current consumptions include only STPM098C related contribution strictly needed to its

functional operation. As a consequence, they do not include consumption due to additional applicative

elements connected to the device (example DrMOS REFIN loading, PMBus™ interface pull-up

resistances, external resistive partitioning etc.)

STPM098C

Current consumption

DS14440 - Rev 1

page 98/110

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