14

LM5109A

SNVS412C – APRIL 2006 – REVISED SEPTEMBER 2016

www.ti.com

Product Folder Links: LM5109A

Submit Documentation Feedback

Copyright © 2006–2016, Texas Instruments Incorporated

•

PLM5109B = The total power dissipation of the driver

•

TJ = Junction temperature

•

TA = Ambient temperature

•

RθJA = Junction-to-ambient thermal resistance

(16)

The thermal metrics for the driver package is summarized in the Thermal Information table of the data sheet. For

detailed information regarding the thermal information table, please refer to the Semiconductor and IC Package

Thermal Metrics (SPRA953).

8.2.3 Application Curves

Figure 15 and Figure 16 shows the rising and falling time as well as turnon and turnoff propagation delay testing

waveform in room temperature, and waveform measurement data (see the bottom part of the waveform). Each

channel (HI, LI, HO, and LO) is labeled and displayed on the left hand of the waveforms.

The testing condition: load capacitance is 1 nF, VDD = 12 V, fSW = 500 kHz.

HI and LI share one same input from function generator, therefore, besides the propagation delay and rising and

falling time, the difference of the propagation delay between HO and LO gives the propagation delay matching

data.

CL = 1 nF

VDD = 12 V

fSW = 500 kHz

Figure 15. Rising Time and Turnon Propagation Delay

CL = 1 nF

VDD = 12 V

fSW = 500 kHz

Figure 16. Falling Time and Turnoff Propagation Delay