DRV8821_15 Datasheet, PDF (14/23 Pages) Texas Instruments – DUAL STEPPER MOTOR CONTROLLER/DRIVER

DRV8821
SLVS912I – JANUARY 2009 – REVISED JANUARY 2014
www.ti.com
70
65
60
55
50
45
40
Low-K PCB (2 layer)
35
30
High-K PCB (4 layer with ground plane)
25
20
0
10
20
30
40
50
60
70
80
90
Backside Copper Area - cm²
Figure 4. Thermal Resistance vs. Copper Plane Area
14
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