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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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UCD3138A 데이터시트(PDF) 45 Page - Texas Instruments |
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UCD3138A 데이터시트(HTML) 45 Page - Texas Instruments |
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45 / 83 page  CYCLE BY CYCLE CLIM FAULT - CBC FAULT MODULE FAULT IN FAULT FLAG UCD3138A www.ti.com SLUSC66B – MARCH 2015 – REVISED MAY 2015 The Fault Mux Module provides a multitude of fault protection functions within the UCD3138A high-speed loop (front end control, filter, DPWM and loop Mux modules). The Fault Mux Module allows highly configurable fault generation based on digital comparators, high-speed analog comparators and external fault pins. Each of the fault inputs to the DPWM modules can be configured to one or any combination of the fault events provided in the Fault Mux Module. Each one of the DPWM engines has four fault modules. The modules are called CBC fault module, AB fault module, A fault module and B fault module. The internal circuitry in all the four fault modules is identical, and the difference between the modules is limited to the output it affects under a fault condition. Figure 6-15. Fault Module All fault modules are capable of detecting faults only once per DPWM switching cycle. Each one of the fault modules have a separate max_count and the fault flag will be set only if sequential faults count exceeds max_count. Once the fault flag is set DPWMs need to be disabled by DPWM_EN going low in order to clear the fault flags. Note, all four Fault Modules share the same DPWM_EN control, all fault flags (output of Fault Modules) is cleared simultaneously. All four Fault Modules share the same global FAULT_EN as well. Therefore, a specific Fault Module cannot be enabled/ disabled separately. Figure 6-16. Cycle by Cycle Block In contrast to the fault modules, only one cycle by cycle block is available in each DPWM module. The cycle by cycle block can work in conjunction with CBC Fault Module and enables DPWM reaction to signals arriving from analog peak current mode (PCM) module. The fault Mux module supports the following basic functions: • 4 digital comparators with programmable thresholds and fault generation • Configuration for 7 high-speed analog comparators with programmable thresholds and fault generation • External GPIO detection control with programmable fault generation • Configurable DPWM fault generation for DPWM current limit fault, DPWM overvoltage detection fault, DPWM A external fault, DPWM B external fault and DPWM IDE flag • Clock failure detection for high and low frequency oscillator blocks • Discontinuous conduction mode detection Copyright © 2015, Texas Instruments Incorporated Detailed Description 45 Submit Documentation Feedback Product Folder Links: UCD3138A |
유사한 부품 번호 - UCD3138A_15 |
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유사한 설명 - UCD3138A_15 |
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