TMC5160 DATASHEET (Rev. 1.08 / 2018-NOV-19)
123
Parameter
Symbol Conditions
Typ
Unit
Typical power dissipation
PD
stealthChop or spreadCycle, 40 or
20kHz chopper, 24V, internal supply
regulators
0.6
W
Thermal resistance junction to
ambient on a multilayer board
RTMJA
Dual signal and two internal power
plane board (2s2p) as defined in
JEDEC EIA JESD51-5 and JESD51-7
(FR4, 35µm CU, 70mm x 133mm,
d=1.5mm)
21
K/W
Thermal resistance junction to
board
RTJB
RTJC
PCB temperature measured within
1mm distance to the package leads
8
3
K/W
K/W
Thermal resistance junction to
case
Junction temperature to heat slug of
package
Table 28.1 Thermal characteristics TQFP48-EP
The thermal resistance in an actual layout can be tested by checking for the heat up caused by the
standby power consumption of the chip. When no motor is attached, all power seen on the power
supply is dissipated within the chip.
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