DRV8305 Driver Datasheet

DRV8305 Datasheet, PDF, Equivalent


Part Number

DRV8305

Description

Three Phase Gate Driver

Manufacture

etcTI

Total Page 30 Pages
Datasheet
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DRV8305
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DRV8305
SLVSCX2B – AUGUST 2015 – REVISED FEBRUARY 2016
DRV8305 Three Phase Gate Driver With Current Shunt Amplifiers and Voltage Regulator
1 Features
1 4.4-V to 45-V Operating Voltage
• 1.25-A and 1-A Peak Gate Drive Currents
• Programmable High- and Low-Side Slew-Rate
Control
• Charge-Pump Gate Driver for 100% Duty Cycle
• Three Integrated Current-Shunt Amplifiers
• Integrated 50-mA LDO (3.3-V and 5-V Option)
• 3-PWM or 6-PWM Input Control up to 200 kHz
• Single PWM-Mode Commutation Capability
• Supports Both 3.3-V and 5-V Digital Interface
• Serial Peripheral Interface (SPI) for Device
Settings and Fault Reporting
• Thermally-Enhanced 48-Pin HTQFP
• Protection Features:
– Fault Diagnostics and MCU Watchdog
– Programmable Dead-Time Control
– MOSFET Shoot-Through Prevention
– MOSFET VDS Overcurrent Monitors
– Gate-Driver Fault Detection
– Reverse Battery-Protection Support
– Limp Home-Mode Support
– Overtemperature Warning and Shutdown
2 Applications
• Three-Phase BLDC and PMSM Motors
• CPAP and Pumps
• Robotics and RC Toys
• Power Tools
• Industrial Automation
3 Description
The DRV8305 device is a gate driver IC for three-
phase motor-drive applications. The device provides
three high-accuracy and temperature compensated
half-bridge drivers, each capable of driving a high-
side and low-side N-channel MOSFET. A charge
pump driver supports 100% duty cycle and low-
voltage operation. The device can tolerate load dump
voltages up to 45-V.
The DRV8305 device includes three bidirectional
current-shunt amplifiers for accurate low-side current
measurements that support variable gain settings and
an adjustable offset reference.
The DRV8305 device has an integrated voltage
regulator (3.3-V or 5-V) to support an MCU or other
system power requirements. The voltage regulator
can be interfaced directly with a standard LIN
physical interface to allow low system standby and
sleep currents.
The gate driver uses automatic handshaking when
switching to prevent current shoot through. The VDS
of both the high-side and low-side MOSFETs is
accurately sensed to protect the external MOSFETs
from overcurrent conditions. The SPI provides
detailed fault reporting, diagnostics, and device
configurations such as gain options for the current
shunt amplifier, individual MOSFET overcurrent
detection, and gate-drive slew-rate control.
Device Options:
• DRV8305N: Voltage reference
• DRV83053: 3.3-V, 50-mA LDO
• DRV83055: 5-V, 50-mA LDO
Device Information (1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DRV8305
HTQFP (48)
7.00 mm × 7.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
4.4 to 45 V
EN_GATE
PWM
SPI
Shunt Amps
nFAULT
DRV8305
3-Phase
Brushless
Pre-Driver
LDO
Shunt Amps
Protection
Gate Drive
Sense
M
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.

DRV8305
DRV8305
SLVSCX2B – AUGUST 2015 – REVISED FEBRUARY 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 5
6.1 Absolute Maximum Ratings ...................................... 5
6.2 ESD Ratings.............................................................. 6
6.3 Recommended Operating Conditions....................... 6
6.4 Thermal Information .................................................. 6
6.5 Electrical Characteristics........................................... 7
6.6 SPI Timing Requirements (Slave Mode Only) ........ 13
6.7 Typical Characteristics ............................................ 14
7 Detailed Description ............................................ 15
7.1 Overview ................................................................. 15
7.2 Functional Block Diagram ....................................... 16
7.3 Feature Description................................................. 17
7.4 Device Functional Modes........................................ 32
7.5 Programming........................................................... 34
7.6 Register Maps ......................................................... 36
8 Application and Implementation ........................ 44
8.1 Application Information............................................ 44
8.2 Typical Application ................................................. 45
9 Power Supply Recommendations...................... 49
9.1 Bulk Capacitance ................................................... 49
10 Layout................................................................... 50
10.1 Layout Guidelines ................................................. 50
10.2 Layout Example .................................................... 50
11 Device and Documentation Support ................. 51
11.1 Documentation Support ........................................ 51
11.2 Community Resources.......................................... 51
11.3 Trademarks ........................................................... 51
11.4 Electrostatic Discharge Caution ............................ 51
11.5 Glossary ................................................................ 51
12 Mechanical, Packaging, and Orderable
Information ........................................................... 51
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (September 2015) to Revision B
Page
• Added pins 41 to 48 to the Pin Functions table .................................................................................................................... 3
• Updated the y-axis units to µA for Figure 4.......................................................................................................................... 14
Changes from Original (August 2015) to Revision A
Page
• Changed the Electrical Characteristics Condition From: TJ = –40°C to 150°C To: TA = 25°C ............................................. 7
2 Submit Documentation Feedback
Product Folder Links: DRV8305
Copyright © 2015–2016, Texas Instruments Incorporated


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community DRV8305 SLVSCX2B – AUGUST 2015 – REVISED FEBRUARY 2016 DRV8305 Three Phase Gate Driver With Current Sh unt Amplifiers and Voltage Regulator 1 Features •1 4.4-V to 45-V Operating Voltage • 1.25-A and 1-A Peak Gate Dr ive Currents • Programmable High- and Low-Side Slew-Rate Control • Charge- Pump Gate Driver for 100% Duty Cycle Three Integrated Current-Shunt Amplif iers • Integrated 50-mA LDO (3.3-V an d 5-V Option) • 3-PWM or 6-PWM Input Control up to 200 kHz • Single PWM-Mo de Commutation Capability • Supports Both 3.3-V and 5-V Digital Interface Serial Peripheral Interface (SPI) for Device Settings and Fault Reporting Thermally-Enhanced 48-Pin HTQFP • P rotection Features: – Fault Diagnosti cs and MCU Watchdog – Programmable De ad-Time Control – MOSFET Shoot-Throug h Prevention – MOSFET VDS Overcurrent Monitors – Gate-Driver Fault Detection – Reverse Battery-Protection Support – Limp Home-Mode Suppo.
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