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DRV10974 датащи(PDF) 6 Page - Texas Instruments

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номер детали DRV10974
подробное описание детали  12-V, Three-Phase, Sensorless BLDC Motor Driver
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
Logo TI1 - Texas Instruments

DRV10974 датащи(HTML) 6 Page - Texas Instruments

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6
DRV10974
SLVSDN2 – JANUARY 2018
www.ti.com
Product Folder Links: DRV10974
Submit Documentation Feedback
Copyright © 2018, Texas Instruments Incorporated
Electrical Characteristics (continued)
TA = –40℃ to 85℃ (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
CURRENT LIMIT
ILIMIT
Current-limit threshold
VCC = 12 V, R(CS) = 7.32 kΩ ±1%
0.2
A
VCC = 12 V, R(CS) = 16.2 kΩ ±1%
0.4
VCC = 12 V, R(CS) = 25.5 kΩ ±1%
0.6
VCC = 12 V, R(CS) = 38.3 kΩ ±1%
0.8
VCC = 12 V, R(CS) = 54.9 kΩ ±1%
1
VCC = 12 V, R(CS) = 80.6 kΩ ±1%
1.2
VCC = 12 V, R(CS) = 115 kΩ ±1%
1.4
VCC = 12 V, R(CS) = 182 kΩ ±1%,
open loop and closed loop
1.6
VCC = 12 V, R(CS) = 182 kΩ ±1%,
align
1.5
RANGE OF MOTORS SUPPORTED
Rm
Motor resistance measurement
Phase to center tap
1
20
Ω
Kt
Motor BEMF constant measurement
Phase to center tap
5
150
mV/Hz
tALIGN
Motor align time
0.67
s
PWM - DIGITAL MODE
VIH(DIG)
PWM input high voltage
2.2
V
VIL(DIG)
PWM input low voltage
0.6
V
ƒPWM
PWM input frequency
0.1
100
kHz
DCMAX
Maximum output PWM duty cycle
VVCC < 14 V
100%
VVCC ≥ 14 V
14 /
VVCC ×
100%
DCMIN
Minimum output PWM duty cycle device
needs to guarantee (irrespective of input
PWM DC)
Lower duty cycle from 15% down
15%
VIH(AUTO)
PWM input high voltage for auto detection
1.695
V
VIL(AUTO)
PWM input low voltage for exiting PWM
mode
1.39
V
Rpu(PWM)
Internal PWM pullup resistor to V3P3
100
LOW-POWER MODE
t(EX_LPM)
PWM pulse duration to exit low-power
mode
PWM > VIH(DIG)
1
µs
V(EX_LPM)
PWM voltage to exit low-power mode
1.5
V
t(EN_LPM)
PWM low time to enter low-power mode
PWM < VIL(DIG);motor stationary
25
ms
PWM - ANALOG MODE
VANA_FS
Analog full-speed voltage
1.8
V
VANA_ZS
Analog zero-speed voltage
20
mV
Rout(PWM)
External analog driver output impedance
50
k
tSAM
Analog speed sample period
320
µs
VANA_RES
Analog voltage resolution
3.5
mV
DIGITAL I/O (FG OUTPUT, FR INPUT)
VIH(FR)
Input high
2.2
V
VIL(FR)
Input low
0.6
V
I(FG_SINK)
Output sink current, FG
VO = 0.3 V
5
mA
Rpu(FG)
Internal FG pullup resistor to 3.3V
20
Rpd(FR)
Internal FR pulldown resistor to ground
100


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