DRV8308_15 Datasheet, PDF (6/60 Pages) Texas Instruments – DRV8308 Brushless DC Motor Controller

DRV8308
SLVSCF7A – FEBRUARY 2014 – REVISED OCTOBER 2014
www.ti.com
7 Specifications
7.1 Absolute Maximum Ratings
over operating free-air temperature (unless otherwise noted) ^{(1) (2) (3)}
Power supply voltage (VM)
Charge pump and high side gate drivers (VCP, UHSG, VHSG, WHSG)
Output terminal, low side gate drivers, charge pump flying cap and switched VM power
supply voltage (U, V, W, ULSG, VLSG, WLSG, CP1, CP2 VSW)
Internal core voltage regulator (VINT)
Linear voltage regulator output (VREG)
Sense current terminal (ISEN)
Digital terminal voltage range (SCLK, SCS, SMODE, SDATAI, SDATAO, FGOUT,
FAULTn, LOCKn, CLKIN, BRAKE, DIR, ENABLE, RESET)
Hall sensor input terminal voltage (UHP, UHN, VHP, VHN, WHP, WHN, FGFB,
FGINN/TACH, FGINP)
Continuous total power dissipation
Operating junction temperature range, T_J
MIN
MAX
–0.3
42
–0.3
50
–0.6
40
–0.3
2
–0.3
5.5
–0.3
2
–0.5
5.75
0
VREG
See Thermal Information
–40
150
UNIT
V
V
V
V
V
V
V
V
°C
(1) Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating
conditions” is not implied. Exposure to absolute–maximum–rated conditions for extended periods may affect device reliability.
(2) All voltage values are with respect to network ground terminal.
(3) Power dissipation and thermal limits must be observed
7.2 Handling Ratings
T_stg
V_(ESD)
Storage temperature range
Electrostatic discharge
Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all
pins ⁽¹⁾
Charged device model (CDM), per JEDEC specification
JESD22-C101, all pins⁽²⁾
MIN
–60
-4000
-1500
MAX
150
4000
1500
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
UNIT
°C
V
7.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
V_M
V_MDIS
I_VREG
I_VSW
f_HALL
f_CLKIN
Motor power supply voltage range, ENABLE = 1, motor operating⁽¹⁾
Motor power supply voltage range, ENABLE = 0, motor not operating
VREG output current⁽²⁾
VSW output current⁽²⁾
Hall sensor input frequency⁽³⁾
SPDMODE = 00 (Clock Frequency Mode)
Frequency on CLKIN
SPDMODE = 01 (Clock PWM Mode)
(1) Note that at VM < 12 V, gate drive output voltage tracks VM voltage
(2) Power dissipation and thermal limits must be observed
(3) f_HALL of 50 Hz to 6.7 kHz is best
(4) Operational with frequencies above 50 kHz, but resolution is degraded
MIN
NOM
MAX UNIT
8.5
32
V
4.5
35
0
30
mA
0
30
0
30
0
90 kHz
16
50 ⁽⁴⁾
6
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