VNH5050ATR-E STMicroelectronics, VNH5050ATR-E Datasheet - Page 26

• Manufacturer Part Number: VNH5050ATR-E
• Description: Motor / Motion / Ignition Controllers & Drivers Automotive H-Bridge 50mOhm 30A 41V VCC
• Manufacturer: STMicroelectronics
• Type: Automotive Fully Integrated H-Bridge Motor Driverr

Specifications of VNH5050ATR-E

• Product Category: Motor / Motion / Ignition Controllers & Drivers
• Rohs: yes
• Product: Fan / Motor Controllers / Drivers
• Operating Supply Voltage: 5.5 V to 18 V
• Supply Current: 8 mA
• Mounting Style: SMD/SMT
• Package / Case: PowerSSO-36

Package and PCB thermal data
4.1.3
a.
26/33
Calculation is valid in any dynamic operating condition. P
R
between High Side and Low Side Chips
R
Chips
Thermal calculation in transient mode
T
T
T
Single pulse thermal impedance definition (values according to the PCB heatsink area).
Z
Z
Z
between High Side and Low Side Chips
Z
Chips
Figure 18. Detailed chipset configuration
Equation 1: pulse calculation formula
Z THδ
jHSAB
jLSA
jLSB
thHS
thLS
thHSLS
thLSLS
thHSLS
thLSLS
where δ
= Z
= Z
= Z
= High Side Chip Thermal Impedance Junction to Ambient
=
= Z
= Z
= R
= Z
= R
R TH
thHSLS
thHSLS
thLSA
thHS
thLSALSB
thHSABLSA
thLSALSB
thHSALSB
=
•
= Z
(
t p T ⁄
x P
δ
x P
x P
+
thLSB
dHSAB
Z THtp 1 δ
dHSAB
dHSAB
= Mutual Thermal Impedance Junction to Ambient between Low Side
= Mutual Thermal Resistance Junction to Ambient between Low Side
= R
= Z
= Low Side Chip Thermal Impedance Junction to Ambient
thHSBLSA
(
+ Z
thHSABLSB
+ Z
+ Z
–
thHSLS
thLS
thLSLS
Doc ID 16009 Rev 10
)
)
CHIP 2
x P
= Mutual Thermal Resistance Junction to Ambient
Z
Z
x (P
= Mutual Thermal Impedance Junction to Ambient
ls
x P
d
hsls
dLSA
values set by user.
dLSA
dLSA
CHIP 1
+ Z
Z
Z
hs
lsls
+ Z
+ P
thLSLS
thLS
dLSB
(a)
CHIP 3
Z
x P
x P
) + T
ls
dLSB
dLSB
amb
Z
hsls
+ T
+ T
amb
amb
VNH5050A-E