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UCD3138ARMHT bảng dữ liệu(PDF) 52 Page - Texas Instruments

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tên linh kiện UCD3138ARMHT
Giải thích chi tiết về linh kiện  Highly Integrated Digital Controller for Isolated Power
PDF  83 Pages
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UCD3138ARMHT bảng dữ liệu(HTML) 52 Page - Texas Instruments

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EXT CAP
AD02
400
Digital
RSHARE
250
3.3 V
ISHARE
ADC12 and
CMP
ESD
ESD
250
3. 2 k
ESD
AD13
3.3V
SW2
SW1
SW3
3.3 V
ADC12 and
CMP
UCD3138A
SLUSC66B – MARCH 2015 – REVISED MAY 2015
www.ti.com
•
AD02 has a special ESD protection mechanism that prevents the pin from pulling down the current-
share bus if power is missing from the UCD3138A
The simplified current sharing circuitry is shown in the drawing below:
Figure 6-21. Simplified Current Sharing Circuitry
FOR TEST ONLY,
CURRENT SHARING MODE
CS_MODE
EN_SW1
EN_SW2
DPWM
ALWAYS KEEP 00
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).
6.18 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.
52
Detailed Description
Copyright © 2015, Texas Instruments Incorporated
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Product Folder Links: UCD3138A



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