VNH5050ATR-E datasheet(25/33 Pages) STMICROELECTRONICS

tên linh kiện	VNH5050ATR-E

Giải thích chi tiết về linh kiện	Automotive fully integrated H-bridge motor driver

PDF	33 Pages

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25 / 33 page

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

468

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

OFF OFF

PdHSA x RthHS + PdLSB

x RthHSLS + Tamb

PdHSA x RthHSLS +

PdLSB x RthLSLS + Tamb

PdHSA x RthHSLS + PdLSB

x RthLS + Tamb

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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