DRV10983_15 Datasheet, PDF (45/57 Pages) Texas Instruments – DRV10983 12- to 24-V, Three-Phase, Sensorless BLDC Motor Driver

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10 Application and Implementation
DRV10983
SLVSCP6B – JULY 2014 – REVISED FEBRUARY 2015
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
DRV10983 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 DRV10983.
10.2 Typical Application
0.1 µF
10 µF _{3.3 V/5 V}
0.1 µF
47 µH
1 µF
1 µF
Interface to
Microcontroller
1 _VCP
2 _CPP
3 _CPN
4 SW
5 SWGND
6 VREG
7 V1P8
8 GND
9 V3P3
10 ^SCL
11 ^SDA
12 ^FG
VCC ²⁴
VCC ²³
W ²²
W 21
V 20
V 19
U 18
U 17
PGND 16
PGND ₁₅
DIR ₁₄
SPEED ₁₃
VCC
10 µF
M
Figure 40. 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
Motor voltage
Motor velocity constant
Motor resistance
Motor electrical constant
Operating closed loop
speed
Operating current
Absolute maximum current
Phase to phase, measured while motor is coasting
1 phase, measured ph-ph and divide by 2
1 phase; inductance divided by resistance, measured ph-ph is equal
to 1 ph
Electrical frequency
PGND, GND
During start-up or lock condition
MIN
8
0.001
0.3
100
1
0.1
TYP MAX UNIT
24
28 V
1.8 V/Hz
19 Ω
5000 µs
1000 Hz
2A
3A
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