Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Need the damaged SMPS IC name

Status
Not open for further replies.

Razortm

Newbie level 4
Joined
Sep 6, 2013
Messages
7
Helped
0
Reputation
0
Reaction score
0
Trophy points
1
Activity points
56
I am having a smps charger bought 2 months ago
14v 1 amp for charging12v 7ah batteries
It gets faulted due to high voltage
I opened that and found IC's upper cap was burnt completly and i am unable to read and found no substitute of that IC
The specs of the IC are
1. It's a DIP8 ic lIke "NE555" but with only 7 pins knows as DIP 7A
2 it's pin 7 is not made originally
3 the smps ic uses no other MOSFET for operating transformer
4. It uses Feedback voltage from primary winding of transformer
5 the smps transformer has one primary and one secondary winding in it
I.e only four pins

So i want a smps ic with
Pin configuration as
Pin 1 VCC
PIN 2 22uf 50v capacitor attaced with positive side attached to pin 2 and negative to pin 3 ground
Pin 3 GND ground
Pin 4 FB feedback from optocopler ic el817
Pin 5 GND
PIN 6 GND
PIN7 NOT MADE ON THIS IC
PIN 8 DRAIN OUT

So please help me to sort out this problem
 

Attached Screenshot and Circuit
Please help me strongly to solve this problem???
find IC.jpg
IMG_20170916_145656.jpg
IMG_20170916_145712.jpg
IMG_20170916_145738.jpg
IMG_20170916_145828.jpg
IMG_20170916_145853.jpg
 

Hi,

I assume this is a SMPS IC similar to "TOP switch" or "TinySwitch" ICs.
But usually there s pin2 or pin6 missing.

Klaus
 

As far as I see, all Power Integrations and ST switcher ICs in DIP package have different pinout, including VIPER06.

More likely it's some Chinese IC.
 

I already tried many datasheet ,circuits, google searches but i found some ICS with matching 2 to 5 pins but not all
I think this ic is chinese or some local indian manufacturer
If it is possible please try to find a substitute of this ic(may have disordered pins, but should work on this circuit)
Till that i try out in electronic market for same type of charger
If i found the same type of charger
I will tell you the number
Thanks for helping and replying
Keep us updated if u found anything
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top