DRV10987 Datasheet, PDF (7/69 Pages) Texas Instruments – DRV10987 12- to 24-V, Three-Phase, Sensorless BLDC Motor Driver

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DRV10987
SLVSE89 – AUGUST 2017
7.5 Electrical Characteristics
over operating voltage and ambient temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
SUPPLY CURRENT
I_VccSTBY
Standby current
V_SPEED = 0 V; buck regulator with
inductor
V_SPEED = 0 V; buck regulator with
resistor
I_Vcc
Active current
V_SPEED > 0 V; buck regulator with
inductor; no motor load
V_SPEED > 0 V; buck regulator with
resistor; no motor load
UVLO
V_{UVLO_R}
UVLO rising threshold
voltage
5.8
V_{UVLO_F}
UVLO falling threshold
voltage
5.6
V_{UVLO_HYS}
UVLO threshold voltage
hysteresis
170
V_{V1P8_UVLO_R} V1P8 UVLO rising threshold
1.5
V_{V1P8_UVLO_F} V1P8 UVLO falling threshold
1.4
V_{V3P3_UVLO_R} V3P3 UVLO rising threshold
2.7
V_{V3P3_UVLO_F} V3P3 UVLO falling threshold
2.5
V_{VREG_UVLO_R} VREG UVLO rising threshold
4
V_{VREG_UVLO_F} VREG UVLO falling
3.9
threshold
LDO OUTPUT
V3P3
Output voltage
Buck regulator with inductor, 20-mA
load
3.1
Buck regulator with resistor, no load
3.1
I_{V3P3_MAX}
Maximum load from V3P3
Only with inductor mode of buck
operation
V1P8
Output voltage
No load
1.7
STEP-DOWN REGULATOR
V_REG
Regulator output voltage
L_SW = 47 µH, C_SW = 10 µF
I_load = 100 mA
R_SW = 39 Ω, C_SW = 10 µF
I_load = 5 mA
4.5
4.5
I_{REG_MAX_L}
Maximum load from V_REG in
switching mode
L_SW = 47 µH, C_SW = 10 µF
I_{REG_MAX_R}
Maximum load from V_REG in
linear mode
R_SW = 39 Ω, C_SW = 10 µF
INTEGRATED MOSFET
r_DS(ON)
Series resistance (H + L)
SPEED – ANALOG MODE
T_A = 25˚C; V_(VCC) > 6.5 V; I_O = 1 A
T_A = 125˚C; V_(VCC) > 6.5V; I_O = 1 A
V_{AN/A_FS}
V_{AN/A_ZS}
t_SAM
Analog full-speed voltage
Analog zero-speed voltage
Sampling period for analog
voltage on SPEED pin
V_(V3P3) × 0.9
0
V_{AN/A_RES}
Analog voltage resolution
SPEED – PWM DIGITAL MODE
V_{DIG_IH}
PWM input high voltage
2.2
V_{DIG_IL}
PWM input low voltage
TYP
MAX UNIT
8.5
14
mA
11
15
10
15
mA
13
16
6
6.2 V
5.8
6V
195
220 mV
1.6
1.7 V
1.55
1.65 V
2.85
2.95 V
2.7
2.8 V
4.2
4.3 V
4.2 _V
3.3
3.5
V
3.3
3.5
20 mA
1.8
1.9 V
5
5.5
V
5
5.5
100 mA
5 mA
250
400
mΩ
325
550
V_(V3P3)
V
100 mV
320
µs
6.5
mV
V
0.6 V
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