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UCD3138ARMHT 数据表(PDF) 43 Page - Texas Instruments |
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UCD3138ARMHT 数据表(HTML) 43 Page - Texas Instruments |
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43 / 83 page  18 24 14 38 18 KCompx DPWMx Period Loop_VFF Filter YN (Duty %) Filter Duty S0.23 14.0 14.0 14.0 14.0 S14.23 Resonant Duty 14.0 Round to 18 bits, Clamp to Positive Clamp Filter Output Clamp High Filter Output Clamp Low X 14.4 14.4 OUTPUT_MULT_SEL 14 Bits [17:4] Filter Period 24 14 38 18 KCompx DPWMx Period Filter YN S0.23 14.0 14.0 14.0 S14.23 Round to 18 bits, Clamp to Positive Truncate low 4 bits X 14.0 PERIOD_MULT_SEL 14.4 UCD3138A www.ti.com SLUSC66B – MARCH 2015 – REVISED MAY 2015 The final section for the filter, which permits its output to be matched to the DPWM is shown in Figure 6- 13. Figure 6-13. Final Section for the Filter This permits the filter output to be multiplied by a variety of correction factors to match the DPWM Period, to provide for Voltage Feed Forward, or for other purposes. After this, there is another clamp. For resonant mode, the filter can be used to generate both period and duty cycle. Figure 6-14. Resonant Mode 6.9.1 Loop Multiplexer The Loop Mux controls interconnections between the filters, front ends, and DPWMs. Any filter, front end, and DPWM can be combined with each other in many configurations. It also controls the following connections: • DPWM to Front End • Front End DAC control from Filters or Constant Current/Constant Power Module • Filter Special Coefficients and Feed Forward • DPWM synchronization • Filter to DPWM The following control modules are configured in the Loop Mux: • Constant Power/Constant Current Copyright © 2015, Texas Instruments Incorporated Detailed Description 43 Submit Documentation Feedback Product Folder Links: UCD3138A |
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