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TMP816 Scheda tecnica(PDF) 6 Page - Texas Instruments |
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TMP816 Scheda tecnica(HTML) 6 Page - Texas Instruments |
6 / 20 page 0.47 µF to 1 µF V CC 6VREG ROFF HB IN+ IN– RMI CPWM VLIM SENSE SGND OUT2P OUT2N OUT1P OUT1N RD FG Discharge Circuit Discharge Pulse 6VREG Hall Bias Hysteresis Amplifier Thermal Shutdown Oscillator Controller CT Hall VTH SS TMP816 SLVS787A – MAY 2009 – REVISED JUNE 2015 www.ti.com 7 Detailed Description 7.1 Overview The TMP816 device is a single phase bipolar predriver which uses the hall sensor & speed control inputs for driving the single phase motor connected through H Bridge. The predriver outputs are designed for driving top side P-type devices and bottom side N-channel FETs in the bridge. Multiple protections like overcurrent, soft- start, speed control, lock detect, speed feedback and minimum speed are incorporated in the device. 7.2 Functional Block Diagram 7.3 Feature Description 7.3.1 Speed Control The speed control functionality is obtained by VTH pin of the device. For pulsed inputs user can supply a 20-kHz to 100-kHz frequency input (20 kHz to 50 kHz recommended on the pin with a current limiting resistor in between. If not used, this pin needs to be connected to ground for full speed.) 6 Submit Documentation Feedback Copyright © 2009–2015, Texas Instruments Incorporated Product Folder Links: TMP816 |
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