Flyback Electronic Circuits, page 2

Flyback Circuits, Page 2
Fly Back Circuits: #'s - E F - Z
Last Updated on: Friday, March 12, 2010 12:07 PM

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

Flyback Circuit Provides Isolated Power Conversion - 01/07/99 EDN-Design Ideas: [Note: File contains multiple circuits scroll to find this circuit] A common requirement in telecommunications systems is to convert an unregulated 48V line to an isolated, accurate dc supply voltage. The circuit in Figure 1 provides a 5V, 15W output.....(design idea added 03/05)

Flyback circuit provides isolated power Conversion - 01/07/99 EDN-Design Ideas: A common requirement in telecommunications systems is to convert an unregulated 48V line to an isolated, accurate dc supply voltage. The circuit in Figure 1 provides a 5V, 15W output. The circuit uses a UCC3809 primary-side controller, which can also control other single-ended converters. The topology uses peak-current-mode control with a fixed-frequency oscillator. The design is cost-efficient.....(design idea added 08/05)

Flyback Controller Improves Cross Regulation for Multiple Output Applications - DN344 Design Notes (Linear Technology) (app note added 1/06)

Flyback Converters for Dummies - In the NIXIE clocks that I have built, I did not want to have the big and ugly mains transformer in the actual clock itself. Instead I use an AC adapter that fits into the mains wall plug. This means that I have to use some sort of an up-converter to generate the 180V anode supply for the NIXIEs....(added 07/07/07)

Flyback LDO Buck Sync. Buck Reference Design - Flyback, LDO, Buck and Sync Buck with Vin 10 to 16 V. Multiple output voltages of -24 V, -5 V, 1.5 V, 3.3 V, 5 V, 12 V and 58 V. The total output power is 15 W. (added 3/05)

Flyback Transformer Driver - This is by far the best project for someone who is already familiar with High Voltage, but wants to take their experiments to the next level: It requires very little previous experience and skills with soldering and identifying components, and there are virtually no adjustments to be made. The danger is minimal, as fly back transformers are intrinsically low power devices, not capable of outputting lethal currents (due to the hair-thin secondary windings), and....(circuit added 09/08)

Flyback Transformer Driver (Jonathan Filippi) - This is an efficient flyback driver for modern cylindrical rectified television flybacks. Many sites doesn't provide circuits driving these transformers, they simply say that they are bad.
….(electronic schematic added 08/08)

Flyback with V in 36-72 V & V out +/-135 V - Flyback with Vin 36-72 V and Vout +/135 V. The output current is 0.15 A with 20.25 W of output power. (added 3/05)

High Efficiency Isolated Flyback Supply Without Optoisolator - DN1011 Design Notes (Linear Technology) (app note added 1/06)

Hot Swap Push-Pull Sync. Buck Negative Flyback Dual Sync. Buck Reference Design - Hot Swap, Push Pull, Sync. Buck, Negative Flyback, Dual Sync. Buck with Vin of -36 V to -72V. Vout of 8 V, 5 V, 3.3 V, 2.5 V and -5 V. The output power is 79.5 W. (added 3/05)

HV91 Series: Designing High-Performance Flyback - Supertex Semiconductors (app note added 2/06)

Isolated Flyback Converter Regulates Without an Optocoupler - DN260 Design Notes (Linear Technology) (app note added 1/06)

Line Output/Flyback Transformer Tester - This is a 'ringer'-type tester I (Bob Barker) originally designed for in-circuit testing of Line Output (Flyback) transformers in TVs and computer monitors. After a couple of technician-years of evaluation in actual servicing situations, it's also proved to be helpful in locating shorted diodes, capacitors and deflection yokes in horizontal deflection stages. LOPT/FBT condition is shown on an 8 LED 'bargraph' display. (circuit / schematic design added 7/06)

LM2577 Three Output Isolated Flyback Regulator - National Semiconductor Application Note (app note added 2/06)

Low-Cost Multiple Output Flyback Converter for I/O Cards - National Semiconductor Application Note (app note added 6/06)

LTC1871 No Rsense Controller is Small & Efficient in Boost Flyback & Sepic Applications - DN296 Design Notes (Linear Technology) (app note added 1/06)

Negative Flyback with V in 12 V & V out-5 V - This reference design is for a -12V at 1A Negative Flyback Converter. The UC3572 converts a positive input voltage to a regulated negative output voltage. The chip is optimized for use in a single inductor negative flyback switching converter employing an external PMOS switch. (added 3/05)

Output Adjustable Flyback Converter - (electronic circuit added 7/03)

Power over Ethernet: Sync Flyback Reference Design - This reference design presents an alternative to the typical boost power regulator. A buck converter IC is used to generate a higher voltage needed by the white light LED power from a Ni-Cd battery. This circuit operates by turning the high switch on, connecting the battery voltage across the inductor..... (added 6/06)

Powerlabs Flyback Driver - Circuit design (added 01/05)

Quasiresonant Converter uses a Simple CMOS IC - 04/15/04 EDN-Design Ideas: Figure 1 shows a flyback power supply that has low noise and uses a simple CMOS 4093 IC for its control. The electrical noise of a converter arises mainly when current switches on. Diode recovery and charging parasitic capacitances create high di/dt, which is the main.....(design idea added 1/05)

Quasiresonant Flyback converter easily charges energy-storage capacitors - 07/23/09 EDN Increase energy transfer by using boundary-conduction mode.....(design idea added 08/09)

Royer Flyback driver - This circuit is an auto-oscillating, resonant, current fed High voltage DC-DC converter. The output voltage is calculated as follows Vout = Vin * pi * Nsecondary / Nprimary. The primary peak voltage is Vin * pi , and the rms voltage is Vin*pi*0.7…(added 05/08)

Simple High Efficiency Isolated Flyback Supply Without Optoisolator - DN1011 Design Notes (Linear Technology) (app note added 1/06)

Single Transistor Flyback Driver - (electronic circuit added 7/03)

Switch-mode Power Supply for a Tube Car Amplifier - To minimize heat loss on any transistor, I use two pass FETs. In the car, input voltage is either 11.5-12.5V (engine off) or 13.5-14.5V (engine on). In the first case, T1 and T2 are fully ON, no need for heatsink. In the second case, T1 is OFF, T2 ON, all voltage and power excess ...(design idea added 04/05/06)

Synchronous Flyback Circuit Provides High Efficiency Conversion - 07/22/04 EDN-Design Ideas: Buck regulators are usually the first choice when you design nonisolated step-down regulators unless the ratio of VIN to VOUT is greater than 10, the input voltage is high, or both. Low duty cycle can be problematic for FET drivers and cause current-mode control loops to lose control. Efficiency can fall dramatically to 60 to 70%.....(design idea added 1/05)

Transformer Design Consideration for off-line Flyback Converters Using Fairchild Power Switch FPStm/ AN-4140 - Fairchild Application Notes / (app note added 6/06)

UCC3819 250-W Pfc Boost Follower Preregulator Design - This is an application note that describes a reference design.This paper reviews the benefits of a boost follower topology and the design of a 250-W PFC boost follower preregulator. (added 3/05)

Fly Back Circuits: #'s - E F - Z