about SG3525A PWM generator IC issues

karthick c

Other Parts Discussed in Thread: UC3525A

Hi, this is karthick from chennai.

I am interested to design the compact and smart battery charger as my own, i am going to use two mosfets in parallel which is in half bridge method.
so now i was stucked up by using this SG3525A pwm ic which is analog kind of thing used to drive the mosfets. but now the issue is i want to know how the pwm will be adjusted depends upon the CC and CV mode of the charger
actually i need the simple understanding support concepts from your side to make me workenough with this pwm ic which can be used to controls the CC and CV mode within this single IC.

Warm Regards

Karthick C

0 LeonardEllis over 5 years ago

Hello Karthick,

The SG3525A is an ST Micro device, not Texas Instruments. As such, we cannot offer any advice on this device.

However, if you would like to replace the SG3525A with the TI UC3525A, we could certainly assist with this. You can compare the two devices here: https://bomcross.ti.com/en/compare/SG3525AN---Stmicroelectronics--vs--UC3525AN---Texas%20Instruments%20Inc .

Please also note that there are battery charger Reference Designs available on TI.com; you can search for one that would meet your needs starting here: http://www.ti.com/reference-designs/index.html?jktype=recommendedresults#search?jktype=recommendedresultssearchkeywordbattery%20charger .

Let us know how we can further assist.

Regards,

~Leonard

0 LeonardEllis over 5 years ago in reply to LeonardEllis

Hi Karthick,

Just wondering what you decided on this design?

Did you find an updated charger design that you can use? Or use the UC3525A in the original design?

If we can assist with anything in this design, please let me know.

Regards,

~Leonard

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