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Overview
| Topology | Flyback Converter |
| Input voltage | 140-380 V |
| Output 1 | 12 V / 1 A |
Description
In traditional isolated high voltage flyback converters,tight regulation is achieved using opto-couplers totransfer regulation information from the secondarysidereference circuitry to the primary side. The problemis that opto-couplers add significant complexityto isolated designs: there is propagation delay, aging,and gain variation, all of which complicate powersupply loop compensation and can reduce reliability.Moreover, during start-up, either a bleeder resistoror high voltage start-up circuit is required to initiallypower up the IC. Unless an additional high voltageMOSFET is added to the start-up components, thebleeder resistor is a source of unwelcome power loss.The LT®8315 is a high voltage flyback converterwith an integrated 630V/300mA switch. The LT8315eliminates the need for an opto-coupler, complicatedsecondary-side reference circuitry, additional start-upcomponents, and an external high voltage MOSFET.
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | VIN | VOut1(V) | IOut1(A) | Vaux(V) | RDC 1(Ω) | RDC 2(Ω) | RDC 3(Ω) | fswitch(kHz) | L(mH) | NPRI : NSEC : NAUX | ISAT(mA) | VT(V (AC)) | L(mm) | W(mm) | H(mm) | Mount | Size | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-OLLT Offline Flyback Transformers, 99 - 269 V (AC), 12 V | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-OLLT Offline Flyback Transformers | Input Voltage 99 - 269 V (AC) | Output Voltage 112 V | Output Current 11 A | Auxiliary Voltage12 V | DC Resistance 11.725 Ω | DC Resistance 20.037 Ω | DC Resistance 30.41 Ω | Switching Frequency 50 | Inductance2.75 mH | Turns Ratio10:1:1 | Saturation Current500 mA | Insulation Test Voltage4000 V (AC) | Length22.25 mm | Width14.6 mm | Height23.24 mm | MountTHT | SizeEE20/10/6 |