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| DRV8305_15 Datasheet, PDF (15/53 Pages) Texas Instruments – DRV8305 Three Phase Gate Driver With Current Shunt Amplifiers and Voltage Regulator | |||
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www.ti.com
7 Detailed Description
DRV8305
SLVSCX2A â AUGUST 2015 â REVISED SEPTEMBER 2015
7.1 Overview
The DRV8305 is a 4.4-V to 45-V gate driver IC for three-phase motor driver applications. This device reduces
external component count by integrating three half-bridge drivers, three current shunt amplifiers, and a LDO. The
DRV8305 provides overcurrent, overtemperature, and undervoltage protection. Fault conditions are indicated by
the nFAULT pin and specific fault indication can be read back from the SPI registers.
Adjustable dead time control and peak gate drive current allows for finely tuning the switching of the external
MOSFETs. Internal hand-shaking is used to prevent FET shoot through.
VDS sensing of the external MOSFETs allows for the DRV8305 to detect overcurrent conditions and respond
appropriately. Individual MOSFET overcurrent conditions are reported through the SPI status registers.
There are three versions of DRV8305 with separate part numbers:
⢠DRV8305N â VREG pin is used as input that supplies the reference for the CSA and SPI.
⢠DRV83053 â VREG is a 3.3-V LDO output pin.
⢠DRV83055 â VREG is a 5.0-V LDO output pin.
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: DRV8305
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