STPM098C datasheet(53/110 Pages) STMICROELECTRONICS

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3.12.1

Output stages temperature telemetry

The output stages maximum temperature for each loop can be directly measured at the input pin TSENn by

means of a dedicated 9-bit ADC converter. The digitized voltage information is made available on PMBus™

paged register READ_TEMPERATUREn_1<15:0> [n = 1, 2].

•

TSENn pin is intended to be connected to the DrMOS terminal TOUT. All TOUT pins of DrMOS referring to

the same control loop are supposed to be shorted together;

•

Output stage telemetry ADC and the related monitoring unit design is based on the following DrMOS

temperature sensor output characteristics:

Figure 42. DrMOS temperature sense output reference characteristics

T[C

°]

Gain=8mV/C °±2.5%

2.4

TOUT[V]

225

-62.5

1.12

0.1

0.6±1%

Table 44. Output Stage temperature ADC electrical characteristics

Symbol

Parameter

Test condition

Min Typ Max Unit

Notes

ADC input

TOUT_adc_range

TOUT ADC voltage input

range

0.1

2.4

TOUT_adc_ic

TOUT ADC input current

TSENn = 5 V

VCC = 5 V

100 150

μA

[n = 1, 2]

ADC input resolution

TOUT_adc_resolution TOUT ADC resolution

bits Application information

TOUT_adc_lsb

TOUT ADC LSB

5.33

mV Application information

ADC input accuracy

TOUT_adc_total_err

TOUT ADC total error

0.28 V ≤ TSENn < 2 V -40

mV [n = 1, 2]

ADC input dynamic characteristics

TOUT_adc_in_sr

TOUT ADC sample rate

MHz Application information

TOUT_adc_latency

TOUT ADC conversion

latency

CLK_SSM_EN = 0

100

μs

Application information

3.12.1.1

Output stages temperature monitor (TOUT monitor)

The digitized output stage temperature information is compared with selectable thresholds based on the following

scheme:

STPM098C

Functional description

DS14440 - Rev 1

page 53/110

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