VNH2SP30-E

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Table 17. Thermal Calculation In Clockwise And Anti-clockwise Operation In Steady-state Mode

Thermal

Resistances

Definition

(values

according to the PCB heatsink area)

Resistance Junction to Ambient

Thermal Resistance Junction to Ambient between

High Side and Low Side Chips

Junction to Ambient between Low Side Chips

Thermal Calculation In Transient Mode (*)

Single Pulse Thermal Impedance Definition

(values according to the PCB heatsink area)

Junction to Ambient

Impedance Junction to Ambient

Thermal Impedance Junction to Ambient between

High Side and Low Side Chips

Junction to Ambient between Low Side Chips

Pulse Calculation Formula

(*) Calculation is valid in any dynamic operating

ON

OFF

OFF

ON

OFF

ON

ON

OFF

Z

TH

δ

R

TH δ

Z

THtp

1

δ

–

()

+

⋅

=

where

δ

t

p

T

⁄

=