UCD3138ARMHT datasheet(51/83 Pages) TI

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Temperature

Sensor

Ch14

ADC 12

Temp Cal

UCD3138A

www.ti.com

SLUSC66B – MARCH 2015 – REVISED MAY 2015

PIN NUMBER

BIT

PIN_NAME

UCD3138A-64 PINS UCD3138A-40 PINS

FAULT[2]

FAULT[1]

FAULT[0]

35, 39

SYNC

12, 26,37

8, 21

DPWM3B

DPWM3A

DPWM2B

DPWM2A

DPWM1B

DPWM1A

DPWM0B

DPWM0A

6.15 Temperature Sensor Control

Temperature sensor control register provides internal temperature sensor enabling and trimming

capabilities. The internal temperature sensor is disabled as default.

Figure 6-20. Internal Temp Sensor

Temperature sensor is calibrated at room temperature (25°C) via a calibration register value.

The temperature sensor is measured using ADC12 (via Ch14). The temperature is then calculated using a

mathematical formula involving the calibration register (this effectively adds a delta to the ADC

measurement).

The temperature sensor can be enabled or disabled.

6.16 I/O Mux Control

In different packages of UCD3138A several I/O functions are multiplexed and routed toward a single

physical pin. I/O Mux Control register may be used in order to choose a single specific functionality that is

desired to be assigned to a physical device pin for your application.

6.17 Current Sharing Control

UCD3138A provides three separate modes of current sharing operation.

•

Analog bus current sharing

•

PWM bus current sharing

•

Master/Slave current sharing

Detailed Description

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