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UCD3138ARMHT датащи(PDF) 24 Page - Texas Instruments |
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UCD3138ARMHT датащи(HTML) 24 Page - Texas Instruments |
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24 / 83 page ![]() 2= FLT_STEP 2= - 1 2= 1 2= 0 A_CNT or B_CNT value 0 127 FLT_THRESH TARGET_LOW Else if A_CNT or B_CNT < FLT_THRESH 2= FLT_STEP If in Manual Control Mode 2= Manual Control register value Else if A_CNT or B_CNT < TARGET_LOW 2= - 1 Else if A_CNT or B_CNT > TARGET_LOW + TARGET_OFFSET 2= 1 Else 2= 0 TARGET_OFFSET UCD3138A SLUSC66B – MARCH 2015 – REVISED MAY 2015 www.ti.com Figure 5-10. DTC Interface Principle Based on the DTC measured, in the next cycle: • A_ADJ = A_ADJ + A_ ∆ • A_ADJ = A_ADJ + B_ ∆ In each cycle, the A_ADJ and B_ADJ accumulator values are dynamically adjust the dead time. The ∆ value changes after the measured body diode conduction time. A_ADJ and B_ADJ have been measured and compared to the threshold values in automatic control mode. A_ADJ and B_ADJ can be controlled by firmware while in manual control mode. Other figures of this peripheral include negative current fault protection, consecutive fault counter, DTC input multiplexor, etc. For details, refer to the programmer's manual. 24 Specifications Copyright © 2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: UCD3138A |
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