STPM098C datasheet(58/110 Pages) STMICROELECTRONICS

58 / 110 page

Figure 47. DrMOS current sense output reference characteristic

Gain=5mV/A ±4%

255

IOUT[mV]

255

-51

Table 49. Phase current ADC electrical characteristics

Symbol

Parameter

Test condition

Min

Typ

Max Unit

Notes

ADC input

IOUT_adc_range

IOUT ADC voltage input range

-255

255

mV -

ADC input resolution

IOUT_adc_resolution IOUT ADC resolution

bits

Application

information

IOUT_adc_lsb

IOUT ADC LSB

0.293

Application

information

ADC input accuracy

IOUT _adc_gain_err IOUT ADC gain error

-3

IOUT _adc_offset_err

IOUT ADC input referred offset

error

-10

mV -

IOUT_adc_tot_err

IOUT ADC total error

mV See note

ADC input dynamic characteristics

IOUT_adc_in_sr

IOUT ADC sample rate

CLK_SSM_EN = 0

MHz

Application

information

IOUT_adc_latency

IOUT ADC conversion latency

CLK_SSM_EN = 0

100

μs

Application

information

Note:

IOUT_ADC conversion total error can be calculated as follows:

IOUT_adc_tot_err = IOUT_adc_gain_err * (ISENn - VREF1/CFILT) + IOUT_adc_offset_err

Example:

•

| ISENn-VREF1/CFILT | = 100 mV

•

Total ADC conversion error = ±10 mV ±(3% * 100 mV) = ±10 mV ±3 mV

•

The value read by PMBus™ has a range between 100 mV - (10 mV + 3 mV) and 100 mV + (10 mV + 3

mV)

STPM098C

Functional description

DS14440 - Rev 1

page 58/110

STPM098C Datasheet(PDF) 58 Page - STMicroelectronics

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