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Flyback Circuits, Page 1
Fly Back Circuits:   #'s       A -
C       D - H       I - Q       R - Z

Last Updated on: Tuesday, July 28, 2015 05:50 AM


Circuits Designed by Dave Johnson, P.E. :

0.5v Negative Supply -  Although not very efficient, this simple circuit, consisting of two LEDs and a photo diode, generates a negative voltage with a current level of a couple milliamps. It is ideal for supplying a negative rail to low power “rail to rail” op amp circuits,  . . . [Circuit by David A. Johnson P.E.,  07/13/06]

 

0.5v to 6v Voltage Converter -  Conventional silicon transistors just can't operate at voltages less than about 0. 7v. Old germanium transistors could be used, but those are hard to find these days and most are rather large in size. Some new n-channel MOSFET devices with very . . . [Hobby Circuit designed by David Johnson P.E.,  05/21/07]

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

.4 watt 100% Radio Shack DC-DC Converter -  This DC-DC converter ("inverter") needs nothing but unmodified Radio Shack parts. You don't need to build or wind any coils or transformers. . .  [electronic design by Don Klipstein]

 

0.5v Negative Supply -  Although not very efficient, this simple circuit, consisting of two LEDs and a photo diode, generates a negative voltage with a current level of a couple milliamps. It is ideal for supplying a negative rail to low power “rail to rail” op amp circuits,  . . . [Circuit by David A. Johnson P.E.,  07/13/06]

 

0.5v to 6v Voltage Converter -  Conventional silicon transistors just can't operate at voltages less than about 0. 7v. Old germanium transistors could be used, but those are hard to find these days and most are rather large in size. Some new n-channel MOSFET devices with very . . . [Hobby Circuit designed by David Johnson P.E.,  05/21/07]

 

10-15W watt 100% Radio Shack DC-DC Converter -  This DC-DC converter ("inverter") needs nothing but unmodified Radio Shack parts. You don't need to build or wind any coils or transformers. . . .  [Written by Don Klipstein]

 

12V-24Vin to 5VoutAT1.4A Monolithic Isolated Flyback Converter (No Opto or Third Winding) -  The LT3575 is a monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation. The part senses the isolated output voltage directly from the primary side flyback waveform. A 2. 5A, 60V NPN power switch is integrated along with all control. . .  [Linear Technology App Note, Jan 27th 2011]

 

12V-24Vin to 5VoutAT350mA Monolithic Isolated Flyback Converter (No Opto or Third Winding) -  The LT3574 is a monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation. The part senses the isolated output voltage directly from the primary side flyback waveform. A 0. 65A, 60V NPN power switch is integrated along with all control. . .  [Linear Technology App Note, Jan 27th 2011]

 

12V-24Vin to Four Output 12VAT120mA Monolithic Isolated Flyback Converter (No Opto or Third Winding) -  The LT3575 is a monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation. The part senses the isolated output voltage directly from the primary side flyback waveform. A 2. 5A, 60V NPN power switch is integrated along with all control. . .  [Linear Technology App Note, Jan 27th 2011]

 

12W AC-DC Flyback converter -  Fully assembled and tested power supply with DC containing all design documentation Features: Universal AC line input, 0-1A IoutAT12V, 84% efficiency at high line, Short Circuit protection, Over Voltage protection. . . 

 

13V-30Vin to +/-5VAT500mA Monolithic Isolated Flyback Converter (No Opto or Third Winding) -  The LT3575 is a monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation. The part senses the isolated output voltage directly from the primary side flyback waveform. A 2. 5A, 60V NPN power switch is integrated along with all control. . .  [Linear Technology App Note, Jan 27th 2011]

 

24Vin to 1.2Vout AT 15A Using Inductor DCR Sensing to Minimize Solution Size and Cost -  This circuit shows a typical application of the LTC3613, configured for DCR sensing in a high step-down solution, 24V to 1. 2V, and synchronized to a 350kHz external clock. . . .  [Linear Technology App Note, Jun 29th 2012]

 

24Vin to 5VoutAT0.7A Monolithic Isolated Flyback Converter (No Opto or Third Winding) -  The LT3573 is a monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation. The part senses the isolated output voltage directly from the primary-side flyback waveform. A 1. 25A, 60V NPN power switch is integrated along with all control. . .  [Linear Technology App Note, Jan 27th 2011]

 

36V-72Vin to 12VoutAT2A Output, Isolated Telecom Supply (No Opto or Third Winding) -  The LT3748 is a switching regulator controller specifically designed for the isolated flyback topology and capable of high power. It drives a low side external N-channel power MOSFET from an internally regulated 7V supply. No third winding or opto-isolator is required for regulation as the part senses the isolated output voltage. . .  [Linear Technology App Note, Jan 27th 2011]

 

48Vin to +/-15VoutAT100mA Monolithic Isolated Flyback Converter (No Opto or Third Winding) -  The LT3512 is a high voltage monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation as the part senses output voltage directly from the primary-side flyback waveform. The device integrates a 420mA, 150V power switch, high voltage circuitry, . . .  [Linear Technology App Note, Apr 22, 2011]

 

48Vin to +/-15VoutAT50mA Monolithic Isolated Flyback Converter (No Opto or Third Winding) -  The LT3511 is a high voltage monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation as the part senses output voltage directly from the primary-side flyback waveform. The device integrates a 240mA, 150V power switch, high voltage circuitry, . . .  [Linear Technology App Note, Jan 27th 2011]

 

48Vin to 12VoutAT200mA Monolithic Isolated Flyback Controller (No Opto or Third Winding) -  The LT3512 is a high voltage monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation as the part senses output voltage directly from the primary-side flyback waveform. The device integrates a 420mA, 150V power switch, high voltage circuitry, . . .  [Linear Technology App Note, Apr 22, 2011]

 

48Vin to 5VoutAT0.3A Monolithic Isolated Flyback Converter (No Opto or Third Winding) -  The LT3511 is a high voltage monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation as the part senses output voltage directly from the primary-side flyback waveform. The device integrates a 240mA, 150V power switch, high voltage circuitry, . . .  [Linear Technology App Note, Jan 27th 2011]

 

555 Timer-Based Flyback Transformer Driver -  My 24kV high voltage "Jacob's Ladder" from DIY flyback transformer driver using 555 timer. . . .  [Circuit posted simon leorick]

 

5V, 2A Output from Automotive Input with Continuous Operation from 6V to 45V -  This design provides an example of how to use the high power LT3748 to convert an automotive input (6V to 45V) to 5V at 2A via a isolated flyback topology. The LT3748 is designed to drive a low side external N-channel power MOSFET from an internally regulated 7V supply without the use of a third winding or opto-isolator for. . .  [Linear Technology App Note, Oct 6th 2010]

 

5V, 2A Output from Automotive Input with Continuous Operation from 6V to 45V -  The LT3748 is a switching regulator controller specifically designed for the isolated flyback topology and capable of high power. It drives a low side external N-channel power MOSFET from an internally regulated 7V supply. No third winding or opto-isolator is required for regulation as the part senses the isolated output voltage. . .  [Linear Technology App Note, Jan 27th 2011]

 

5Vin to +/-12VoutAT40mA Monolithic Isolated Flyback Converter (No Opto or Third Winding) -  The LT3574 is a monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation. The part senses the isolated output voltage directly from the primary side flyback waveform. A 0. 65A, 60V NPN power switch is integrated along with all control. . .  [Linear Technology App Note, Jan 27th 2011]

 

60W AC-DC Flyback Converter -  Universal AC line input Fully assembled and tested power supply with DC containing all design documentation Features: 0-4A IoutAT15V, 87% efficiency at high line, Short Circuit protection, Over Voltage protection. . . 

 

90W AC-DC Flyback Converter -  Fully assembled and tested power supply with DC containing all design documentation Features: Universal AC line input, 0-6A IoutAT15V, 83% efficiency at high line, Short Circuit protection, Over Voltage protection. .

 

9V-30Vin to +/-5VoutAT350mA Monolithic Isolated Flyback Converter (No Opto or Third Winding) -  The LT3573 is a monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation. The part senses the isolated output voltage directly from the primary-side flyback waveform. A 1. 25A, 60V NPN power switch is integrated along with all control. . .  [Linear Technology App Note, Jan 27th 2011]


Fly Back Circuits:   #'s       A - C       D - H       I - Q       R - Z


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