Sep 7, 2007 #1 C CMOS Advanced Member level 3 Joined Jan 6, 2004 Messages 862 Helped 94 Reputation 186 Reaction score 50 Trophy points 1,308 Location USA Activity points 5,673 lm2577 sepic Hi, Can someone suggest me low cost monolithic boost converters for converting +5V to ±18V, Current required is 500mA.
lm2577 sepic Hi, Can someone suggest me low cost monolithic boost converters for converting +5V to ±18V, Current required is 500mA.
Sep 8, 2007 #2 I IanP Advanced Member level 7 Joined Oct 5, 2004 Messages 7,929 Helped 2,311 Reputation 4,624 Reaction score 531 Trophy points 1,393 Location West Coast Activity points 66,416 Flyback regulator based on the LM2577-ADJ may be a good candidate for this job .. Goto page 21+++ and have a look at it .. **broken link removed** Regards, IanP
Flyback regulator based on the LM2577-ADJ may be a good candidate for this job .. Goto page 21+++ and have a look at it .. **broken link removed** Regards, IanP
Sep 8, 2007 #3 C CMOS Advanced Member level 3 Joined Jan 6, 2004 Messages 862 Helped 94 Reputation 186 Reaction score 50 Trophy points 1,308 Location USA Activity points 5,673 Do you know any converter without transformer? Any inductor based design will do but transformers of those specs are pretty hard to find.
Do you know any converter without transformer? Any inductor based design will do but transformers of those specs are pretty hard to find.
Sep 8, 2007 #4 N nguyennam Advanced Member level 1 Joined Sep 6, 2006 Messages 438 Helped 43 Reputation 86 Reaction score 14 Trophy points 1,298 Activity points 4,067 MC34063 from ON semiconductor is what you need. You will have to use 1 MC34063 for converting +5V to +18V, 1 for +5V to -18V. Inductors are needed. nguyennam
MC34063 from ON semiconductor is what you need. You will have to use 1 MC34063 for converting +5V to +18V, 1 for +5V to -18V. Inductors are needed. nguyennam
Sep 8, 2007 #5 C CMOS Advanced Member level 3 Joined Jan 6, 2004 Messages 862 Helped 94 Reputation 186 Reaction score 50 Trophy points 1,308 Location USA Activity points 5,673 nguyennam said: MC34063 from ON semiconductor is what you need. You will have to use 1 MC34063 for converting +5V to +18V, 1 for +5V to -18V. Inductors are needed. nguyennam Click to expand... Yes I thought of doing the same thing. But if there is any converter with dual ± outputs, it will best suit my requirements. Thanks
nguyennam said: MC34063 from ON semiconductor is what you need. You will have to use 1 MC34063 for converting +5V to +18V, 1 for +5V to -18V. Inductors are needed. nguyennam Click to expand... Yes I thought of doing the same thing. But if there is any converter with dual ± outputs, it will best suit my requirements. Thanks
Sep 9, 2007 #6 I IanP Advanced Member level 7 Joined Oct 5, 2004 Messages 7,929 Helped 2,311 Reputation 4,624 Reaction score 531 Trophy points 1,393 Location West Coast Activity points 66,416 Converters with positive and negative outputs are pretty rare and their output currents are usually below 500mA .. Here is one example: https://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1003,C1042,C1031,C1061,P1705 So, if you need 0.5A of (+) and (-) rails most likely you will have to employ two independent switching regulators .. Regards, IanP
Converters with positive and negative outputs are pretty rare and their output currents are usually below 500mA .. Here is one example: https://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1003,C1042,C1031,C1061,P1705 So, if you need 0.5A of (+) and (-) rails most likely you will have to employ two independent switching regulators .. Regards, IanP
Sep 9, 2007 #7 C CMOS Advanced Member level 3 Joined Jan 6, 2004 Messages 862 Helped 94 Reputation 186 Reaction score 50 Trophy points 1,308 Location USA Activity points 5,673 I think I'll go with the MC34063 solution. Thanks guys.