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UCD3138064ARGCR.A Folha de dados(PDF) 47 Page - Texas Instruments

Nome de Peças UCD3138064ARGCR.A
Descrição Electrónicos  UCD3138064A Highly Integrated Digital Controller for Isolated Power
PDF  84 Pages
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Fabricante Electrônico  TI2 [Texas Instruments]
Página de início  https://www.ti.com
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UCD3138064ARGCR.A Folha de dados(HTML) 47 Page - Texas Instruments

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ADC 12
Temperature
Calibration
Temperature
Sensor
CH15
47
UCD3138064A
www.ti.com
SLUSCA5B – DECEMBER 2015 – REVISED JANUARY 2017
Submit Documentation Feedback
Product Folder Links: UCD3138064A
Detailed Description
Copyright © 2015–2017, Texas Instruments Incorporated
BIT
PIN_NAME
PIN NUMBER
UCD3138x
2
DPWM1A
24
1
DPWM0B
23
0
DPWM0A
22
6.4.13 Temperature Sensor Control
Temperature sensor control register provides internal temperature sensor enabling and trimming
capabilities. The internal temperature sensor is disabled by default.
Figure 6-24. 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 Ch15). 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.
6.4.14 I/O Mux Control
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. See the UCD3138x programmer's manual for
details on the available configurations.
6.4.15 Current Sharing Control
UCD3138x provides three separate modes of current sharing operation.
•
Analog bus current sharing
•
PWM bus current sharing
•
Master/Slave current sharing
•
AD02 has a special ESD protection mechanism that prevents the pin from pulling down the current-
share bus if power is missing from the UCD3138x
The simplified current sharing circuitry is shown in the drawing below. The digital pulse connected to SW3
transforms SW3 into a pulse-width-modulated current source. Details on the frequency and resolution of
this feature are in the digital power fusion peripherals manual.



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