DRV8305_15 Datasheet, PDF (1/53 Pages) Texas Instruments – DRV8305 Three Phase Gate Driver With Current Shunt Amplifiers and Voltage Regulator

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DRV8305
SLVSCX2A – AUGUST 2015 – REVISED SEPTEMBER 2015
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/1-A Peak Gate Driver Currents
• Programmable, Independent HS/LS Slew
Rate/Slope Control
• Charge Pump Gate Driver for 100% Duty Cycle
• Three Integrated Current Shunt Amplifiers
• Integrated 50-mA LDO (3.3-V/5-V Option)
• Control of 3-PWM or 6-PWM Inputs up to 200 kHz
• Built-In Commutation Tables for Using 1 PWM
• Programmable Dead Time
• MOSFET Shoot Through Prevention
• Programmable V_DS Protection of MOSFETs
• Reverse Battery Protection Support
• Supports Both 3.3-V/5-V Digital Interface
• SPI Interface
• Thermally Enhanced 48-Pin QFP (7 × 7 mm)
• Protection Features
• VM Undervoltage Lockout (UVLO2)
• Logic Undervoltage (UVLO1)
• Charge Pump Undervoltage (CPUVL)
• Temperature Warnings and Shutdown
• Watchdog Timer
2 Applications
• 3 Phase BLDC and PMSM Motors
• CPAP and Pumps
• Robotics and RC Toys
• Power Tools
• Industrial Automation
3 Description
The DRV8305 is a gate driver IC for three phase
motor drive applications. It provides three high-
accuracy trimmed and temperature compensated half
bridge drivers, each capable of driving a high-side
and low-side N-type MOSFET.
A charge pump driver supports 100% duty cycle and
low voltage operation. The gate driver can also
handle load dumps up to 45 V.
The gate driver uses automatic handshaking when
switching to prevent current shoot through. Accurate
V_DS of both the high-side and low-side MOSFETs
conditions are sensed to protect external MOSFETs
during over current.
The DRV8305 includes three current shunt amplifiers
for accurate current measurements that support bi-
directional current sensing with adjustable gain.
The DRV8305 has an integrated voltage regulator
and controller to support a MCU or additional system
power needs.
The SPI provides detailed fault reporting and flexible
parameter settings such as gain options for the
current shunt amplifier, slew rate control of the gate
drivers, various protection features.
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
DRV8305
PWM
3-Phase
Gate Drive
SPI
Brushless
Pre-Driver
M
Shunt Amps
nFAULT
LDO
Shunt Amps
Protection
Sense
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.