06.04.2015 Views

HM03145 High Efficiency DC/DC Module

HM03145 High Efficiency DC/DC Module

HM03145 High Efficiency DC/DC Module

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

APPLICATION INFORMATION<br />

Timing Chart<br />

The timing chart can be helpful for engineers<br />

to see the operation of each pin of <strong>HM03145</strong><br />

and can be used to be the primary basis<br />

during the error detection. The timing chart of<br />

<strong>HM03145</strong> during the normal operation is as<br />

follows:<br />

Furthermore, when the protection of <strong>HM03145</strong><br />

occurs, its timing chart can be further categorized<br />

into three types. One is that when the output over<br />

voltage occurs, the PGOOD terminal will convert<br />

from the high level to the low level and output will<br />

be turned off if the output voltage is higher than<br />

the protection point. The timing for each pin is as<br />

follows:<br />

Figure 4. Normal Operation<br />

When it comes to start-up, it should be noted<br />

that the internal mechanism of <strong>HM03145</strong> does<br />

not allow the startup of PVCC to be faster than<br />

that of the input voltage, so in order to make it<br />

work normally, this problem should be avoided<br />

in applications.<br />

Figure 5. Output Over Voltage<br />

TITLE: SPECIFICATION OF <strong>HM03145</strong><br />

PAGE REV:A1<br />

PAGE 17 OF 30

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!