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DRV10975ZPWPR Datasheet(PDF) 45 Page - Texas Instruments

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Part # DRV10975ZPWPR
Description  12-V, Three-Phase, Sensorless BLDC Motor Driver
PDF  57 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

DRV10975ZPWPR Datasheet(HTML) 45 Page - Texas Instruments

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VCP
CPP
CPN
SW
SWGND
VREG
V1P8
GND
V3P3
SCL
SDA
FG
VCC
VCC
W
W
V
V
U
U
PGND
PGND
DIR
SPEED
M
Interface to
Configuration
0.1 µF
0.1 µF
39
10 µF
1 µF
1 µF
VCC
3.3 V/5 V
DRV10975
www.ti.com
SLVSCP2 – JANUARY 2015
10 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
10.1 Application Information
DRV10975 is used in sensorless 3-phase BLDC motor control. The driver provides a high performance, high
reliability, flexible and simple solution for appliance fan, pump, and HVAC applications. The following design
shows a common application of the DRV10975.
10.2 Typical Application
Figure 39. Typical Application Schematic
10.2.1 Design Requirements
Table 10 provides design input parameters and motor parameters for system design.
Table 10. Recommended Application Range
MIN
TYP
MAX
UNIT
Motor voltage
6.5
12
18
V
Motor velocity constant
Phase to phase, measured while motor is coasting
0.001
1.4
V/Hz
Motor resistance
1 phase, measured ph-ph and divide by 2
0.3
12
Ω
1 phase; inductance divided by resistance, measured ph-ph is
Motor electrical constant
100
5000
µs
equal to 1 ph
Operating closed loop speed Electrical frequency
1
1000
Hz
Operating current
PGND, GND
0.1
1.5
A
Absolute maximum current
During start-up or lock condition
2
A
Copyright © 2015, Texas Instruments Incorporated
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