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UCD3138RMHT Datasheet(PDF) 48 Page - Texas Instruments

Part # UCD3138RMHT
Description  UCD3138 Highly Integrated Digital Controller for Isolated Power
PDF  99 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

UCD3138RMHT Datasheet(HTML) 48 Page - Texas Instruments

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EXT CAP
AD02
400 Ω
Digital
RSHARE
250 Ω
3.3 V
ISHARE
ADC12 and
CMP
ESD
ESD
250 Ω
3. 2 kΩ
ESD
AD13
3.3V
SW2
SW1
SW3
3.3 V
ADC12 and
CMP
Figure 9-16. Simplified Current Sharing Circuitry
CURRENT SHARING MODE
FOR TEST ONLY,
ALWAYS KEEP 00
CS_MODE
EN_SW1
EN_SW2
DPWM
Off or Slave Mode (3-state)
00
00 (default)
0
0
0
PWM Bus
00
01
1
0
ACTIVE
Off or Slave Mode (3-state)
00
10
0
0
0
Analog Bus or Master
00
11
0
1
0
The period and the duty of 8-bit PWM current source and the state of the SW1 and SW2 switches can be
controlled through the current sharing control register (CSCTRL).
9.5.13 Temperature Reference
The temperature reference register (TEMPREF) provides the ADC12 count when ADC12 measures the internal
temperature sensor (channel 14) during the factory trim and calibration.
This information can be used by different periodic temperature compensation routines implemented in the
firmware. But it should not be overwritten by firmware, otherwise this factory written value will be lost.
UCD3138
SLUSAP2J – MARCH 2012 – REVISED NOVEMBER 2021
www.ti.com
48
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Copyright © 2021 Texas Instruments Incorporated
Product Folder Links: UCD3138



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