ZXLD1371Q

ZXLD1371Q

Document number: DS37116 Rev. 1 - 2

29 of 42

www.diodes.com

September 2015

© Diodes Incorporated

ZXLD1371Q

Example 2:

Assuming that cumulatively the rise time and fall time can account for a maximum of 10% of the period, the maximum frequency allowed in

this condition is:



This frequency is within the recommended frequency range the device can handle, therefore the ZXMN6A09KQ is recommended to be

used with the ZXLD1371Q for frequencies from 300kHz to 500kHz).

The recommended total gate charge for the MOSFET used in conjunction with the ZXLD1371Q is less than 30nC.

Junction Temperature Estimation

Finally, the ZXLD1371Q junction temperature can be estimated using the following equations:

Total supply current of ZXLD1371Q:

Power consumed by ZXLD1371Q

of the power MOSFET. Moreover the part of thermal resistance between case and ambient depends on the PCB characteristics.

Figure 8. Power derating curve for ZXLD1371

mounted on test board according to JESD51

ns

97

mA

300

nC

29

PEAK

I

g

Q

dt







0

0.5

1

1.5

2

2.5

-40 -25 -10

5

20

35 50 65 80 95 110 125

AMBIENT TEMPERATURE (°C)