The Godfather talking
You can run, but you can't hide.
Sonsivri
 
*
Welcome, Guest. Please login or register.
Did you miss your activation email?
December 09, 2016, 08:07:32 20:07


Login with username, password and session length


Pages: [1]
Print
Author Topic: Designing Half Bridge SMPS 360W.........Which PWM controller is to be used ?  (Read 11274 times)
0 Members and 1 Guest are viewing this topic.
abcsantosh
Junior Member
**
 Muted
Offline Offline

Posts: 56

Thank You
-Given: 33
-Receive: 3


« on: October 24, 2009, 09:58:38 09:58 »

Hi all, I want to design a half bridge converter with following specs.
Output : 36VDC with 10A Single isolated output
Input   : 400Vdc PFC Stage (This stage is ready)

suggest me, which pwm controller is to be used ? easy availability in market and application notes is preferable. 
I want to incorporate current mode control and optical feedback technique.

Have a Nice Day

Logged
beque
Active Member
***
Offline Offline

Posts: 129

Thank You
-Given: 45
-Receive: 149



« Reply #1 on: October 24, 2009, 02:54:52 14:54 »

The UC38X6 series (UC3846/UC3856/UCC3806) is best suited for your application...
Logged
Orcino Borges
Newbie
*
 Muted
Offline Offline

Posts: 23

Thank You
-Given: 13
-Receive: 18


« Reply #2 on: October 24, 2009, 04:04:26 16:04 »

Hi, SG3525 is the best choice.

             Orcino 
Logged
abcsantosh
Junior Member
**
 Muted
Offline Offline

Posts: 56

Thank You
-Given: 33
-Receive: 3


« Reply #3 on: October 25, 2009, 04:27:07 16:27 »

Hi Orcino Borges, SG3525 is Voltage mode controller. isn't it? correct me, if I am wrong.
I want to incorporate peak current mode control.

beque, UC3846/3856 is not available here. Only UC3842-44 is available. If low cost controller is not available, I am going to use SG3524. It is available.
 
Anyway, refer some application notes with sg3524/3525 SMPS circuits if possible.

Have a Good Day
Logged
arash_tah
Active Member
***
Offline Offline

Posts: 113

Thank You
-Given: 18
-Receive: 6


« Reply #4 on: October 26, 2009, 05:22:01 05:22 »

Hi abcsantosh
Search in texas instrument site in power switching  there are very good documents for your application
Logged
ALLPIC
V.I.P
Active Member
*****
Offline Offline

Posts: 113

Thank You
-Given: 64
-Receive: 72


« Reply #5 on: October 26, 2009, 05:31:49 05:31 »

Microchip having application note useing dspic33F GS series that works very good
Logged
tAhm1D
Senior Member
****
Offline Offline

Posts: 336

Thank You
-Given: 103
-Receive: 180



« Reply #6 on: December 02, 2009, 06:48:27 18:48 »

Hi abcsantosh,
You can use PWM controller like SG3524/SG3525. One such circuit is present in the ST application note for SG3525:
www.st.com/stonline/products/literature/anp/1689.pdf
Hope this will help you.
Logged
medik
Newbie
*
Offline Offline

Posts: 34

Thank You
-Given: 64
-Receive: 2


« Reply #7 on: December 03, 2009, 12:41:14 12:41 »

Hi tAhmID. Can i do the function of SG3524 with a PIC?
Logged
Orcino Borges
Newbie
*
 Muted
Offline Offline

Posts: 23

Thank You
-Given: 13
-Receive: 18


« Reply #8 on: December 03, 2009, 04:12:43 16:12 »

Hi.
  I use the circuit attached to control current or voltage.

                              Orcino
Logged
MAXPAYNE
Hero Member
*****
Offline Offline

Posts: 605

Thank You
-Given: 320
-Receive: 313


It's a little funny......


« Reply #9 on: December 04, 2009, 05:12:24 05:12 »

Hi.
  I use the circuit attached to control current or voltage.

                              Orcino


Pls post uor full prjct......I am interested...........
Logged

Whats the Craziest Project u have done lately...?
tAhm1D
Senior Member
****
Offline Offline

Posts: 336

Thank You
-Given: 103
-Receive: 180



« Reply #10 on: December 04, 2009, 05:40:07 05:40 »

Hi Orcino Borges,
This circuit can be made easier with using only SG3525 or only PIC. But if you have to use both, why are you using SPI?
Anyway, the circuit isn't bad, I just think you slightly complicated it.
Logged
MAXPAYNE
Hero Member
*****
Offline Offline

Posts: 605

Thank You
-Given: 320
-Receive: 313


It's a little funny......


« Reply #11 on: December 04, 2009, 05:55:29 05:55 »

Hi Orcino Borges,
This circuit can be made easier with using only SG3525 or only PIC. But if you have to use both, why are you using SPI?
Anyway, the circuit isn't bad, I just think you slightly complicated it.

But i think using this way, the current can be controlled more precisely.................
Logged

Whats the Craziest Project u have done lately...?
Orcino Borges
Newbie
*
 Muted
Offline Offline

Posts: 23

Thank You
-Given: 13
-Receive: 18


« Reply #12 on: December 04, 2009, 11:24:04 11:24 »

Hi,
      This is part of a project charger lead acid batteries, the PIC you can select the current and voltage and the type of charge.
I use the SPI  to talk to the DAC 7513  and thus generate the reference voltage according to load current chosen. I finished a new project using the DSPIc 30F2020 that will do all the work.
Logged
Diramo
Junior Member
**
Offline Offline

Posts: 35

Thank You
-Given: 155
-Receive: 50


« Reply #13 on: December 24, 2009, 12:51:25 12:51 »

Hi,
I made my design - compact high efficiency (92% 220VAC line, 88...90% 90...120VAC) charger for LiFePO4 battery - 42.5V max, 400W. Topology - PFC+resonant half bridge converter. PFC made with UCC28060, schematic diagram almost same as in the application note shown at TI website. Resonant converter - FSFR2100 from  Fairchild. It is a resonant controller and power MOSFETs assembly. Low cost. Circuit diagram has been taken from application note. I just included resonant inductor 80uH in series with the power transformer because I did not find special bobbin for resonant transformers. Voltage-current control chip - TSM1011. And PIC16F883 as a controller. It generates voltage and current reference control DC values for TSM1011 in accordance with the charging profile.
Design is very simple, robust and cheap. This charger already commercialized by my former company.
Logged
tpek
V.I.P
Newbie
*****
Offline Offline

Posts: 11

Thank You
-Given: 20
-Receive: 13



« Reply #14 on: January 07, 2010, 03:55:01 15:55 »

Diramo i have one question.
Can You regulate output voltage in whole range (for example from 1 to 24V) in your design?

If yes tell me how You do it in resonant converter when output voltage depends from main switching ferquency.
Logged
Diramo
Junior Member
**
Offline Offline

Posts: 35

Thank You
-Given: 155
-Receive: 50


« Reply #15 on: January 11, 2010, 04:17:49 16:17 »

No. I can regulate output voltage in current design only in range 32...64V. There is resonant converter topology and the output voltage regulation can not be very wide. But, using the other chip, not FSFR2100 (resonant converter) but FSFA2100 (asymmetric converter), you can obtain the necessary output voltage range. If you want to have a wide regulation range in resonant converter there is should be used additional post-regulator, either buck or magamp. Or use power factor corrector with buck or SEPIC topology as a pre-regulator.
« Last Edit: January 11, 2010, 04:21:24 16:21 by Diramo » Logged
Jehan
Junior Member
**
Offline Offline

Posts: 52

Thank You
-Given: 46
-Receive: 18


« Reply #16 on: January 26, 2010, 11:20:41 23:20 »

TL494 is  good choice for half bridge
Logged
Pages: [1]
Print
Jump to:  


DISCLAIMER
WE DONT HOST ANY ILLEGAL FILES ON THE SERVER
USE CONTACT US TO REPORT ILLEGAL FILES
ADMINISTRATORS CANNOT BE HELD RESPONSIBLE FOR USERS POSTS AND LINKS

... Copyright 2003-2999 Sonsivri.to ...
Powered by SMF 1.1.18 | SMF © 2006-2009, Simple Machines LLC | HarzeM Dilber MC