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VNH5050ATR-E Datasheet(PDF) 25 Page - STMicroelectronics

Part # VNH5050ATR-E
Description  Automotive fully integrated H-bridge motor driver
PDF  33 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

VNH5050ATR-E Datasheet(HTML) 25 Page - STMicroelectronics

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VNH5050A-E
Package and PCB thermal data
Doc ID 16009 Rev 10
25/33
Figure 16.
Chipset configuration
Figure 17.
Auto and mutual Rthj-amb vs PCB copper area in open box free air
condition
4.1.1
Thermal calculation in clockwise and anti-clockwise operation in
steady-state mode
4.1.2
Thermal resistances definition (values according to the PCB heatsink
area)
RthHS = RthHSA = RthHSB = High Side Chip Thermal Resistance Junction to Ambient (HSA or
HSB in ON state)
RthLS = RthLSA = RthLSB = Low Side Chip Thermal Resistance Junction to Ambient
HIGH SIDE
CHIP
HSAB
LOW SIDE
CHIP A
LOW SIDE
CHIP B
LSA
LSB
0
10
20
30
40
50
60
70
80
02
468
10
12
cm
2 of Cu Area (refer to PCB layout)
RthA
RthB = RthC
RthAB = RthAC
RthBC
Table 18.
Thermal calculation in clockwise and anti-clockwise operation in steady-
state mode
HSA HSB LSA LSB
TjHSAB
TjLSA
TjLSB
ON
OFF OFF
ON
PdHSA x RthHS + PdLSB
x RthHSLS + Tamb
PdHSA x RthHSLS +
PdLSB x RthLSLS + Tamb
PdHSA x RthHSLS + PdLSB
x RthLS + Tamb
OFF
ON
ON
OFF
PdHSB x RthHS + PdLSA
x RthHSLS + Tamb
PdHSB x RthHSLS +
PdLSA x RthLS + Tamb
PdHSB x RthHSLS + PdLSA
x RthLSLS + Tamb



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