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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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DRV8353FSRTAR Scheda tecnica(PDF) 33 Page - Texas Instruments |
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DRV8353FSRTAR Scheda tecnica(HTML) 33 Page - Texas Instruments |
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33 / 97 page  INHA INLA INHB INLB INHC INLC PWM STATE0 STATE1 STATE2 DIR nBRAKE MCU_PWM MCU_GPIO MCU_GPIO BLDC Motor H H H Figure 8-10. 1x PWM—Hall Sensor 8.3.1.1.4 Independent PWM Mode (PWM_MODE = 11b or MODE Pin Tied to DVDD) In this mode, the corresponding input pin independently controls each high-side and low-side gate driver. This control mode allows for the external controller to bypass the internal dead-time handshake of the DRV835xF or to utilize the high-side and low-side drivers to drive separate high-side and low-side loads with each half-bridge. These types of loads include unidirectional brushed DC motors, solenoids, and low-side and high-side switches. In this mode, If the system is configured in a half-bridge configuration, shoot-through occurs when the high-side and low-side MOSFETs are turned on at the same time. Table 8-5. Independent PWM Mode Truth Table INLx INHx GLx GHx 0 0 L L 0 1 L H 1 0 H L 1 1 H H Because the high-side and low-side VDS overcurrent monitors share the SHx sense line, using both of the monitors is not possible if both the high-side and low-side gate drivers are being operated independently. In this case, connect the SHx pin to the high-side driver and disable the VDS overcurrent monitors as shown in Figure 8-11. INHx INLx GHx Gate Driver HS VCP SHx GLx LS VGLS VM VDRAIN SLx/SPx V DS V DS + + Disable Disable Load Load ± ± Figure 8-11. Independent PWM High-Side and Low-Side Drivers www.ti.com DRV8350F, DRV8353F, DRV8350RF, DRV8353RF SLVSFV1 – SEPTEMBER 2020 Copyright © 2020 Texas Instruments Incorporated Submit Document Feedback 33 Product Folder Links: DRV8350F DRV8353F DRV8350RF DRV8353RF |
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