The PMP20612 reference design is a high efficiency AC-DC LED driver reference design with very low total harmonic distortion (THD). This design uses CCM PFC with the UCC28180 controller to provide power factor correction (PFC) functionality from 108VAC to 305VAC input. A two-switch Flyback converter with the UCC28740 controller is used to provide 200V/1A constant current (CC)/ constant voltage (CV). The voltage sensing and current sensing circuit at the output side with the TL431 and INA180 allow an external circuit to process a dimming function. As a result this design achieves 92.9% peak efficiency at 230VAC/50Hz input. At 277VAC, the board also has less than 20% THD with 20% load.
The MAX17596 is a peak-current-mode controller for designing wide input-voltage flyback regulators.
15W 24V Offline Flyback Converter Using the MAX17595
This document details the MAXREFDES119# subsystem reference design, a 17V to 36V input, 5V output, no-opto flyback isolated power supply capable of 9W. Design files and test results are included. Hardware is available for purchase.
This application note shows a reference design using the MAX15026 low-cost, high-efficiency synchronous buck converter in an auxiliary power supply for LCD TVs or set-top boxes. This reference design generates a 5V, 5A power supply from a wide, 6.5V to 24V input voltage range.
Wireless battery-powered smart locks are becoming more and more popular in today's market with the increasing number of building and residential owners looking to retrofit smart locks (or electronic locks) for their buildings or homes. In smart lock applications, high current motors and radios often have a faster battery drain rate, resulting in compromised battery life. Replacing multiple batteries can be time-consuming and costly, so reducing average current draw is often a key design consideration.
This application note describes Maxim's UL® Recognized, IEEE® 1394™, single- and dual-port FireWire® protective circuits. The single-port FireWire protective circuit is designed using the MAX5943A, while the dual-port FireWire protective circuit utilizes the MAX5944. To assist designers with implementing these circuits, this application note details the schematics, PCB layout, and bill of materials for each UL Recognized circuit.
KITPF0100EPEVBE is targeted at standalone environments in NXPEvaluation board for the MMPF0100 power management integrated circuit (PMIC).
Power over Ethernet (PoE) is a technology that allows network cables to deliver power to a powered device (PD) through power-sourcing equipment (PSE) or midspan, and has many advantages over traditional methods of delivering power.
The MAXREFDES1218 is an active-clamp forward power supply that delivers up to 4A at 24V from a 18V to 36V supply voltage. It is designed for industrial equipment that needs high power isolated power supply. The typical application of the MAXREFDES1218 is an IO-Link® application that needs a 24V isolated voltage from an industrial 24V supply voltage.
Due to its simplicity and low cost, the flyback converter is the preferred choice for low-to-medium isolated DC-DC power-conversion applications. However, the use of an optocoupler or an auxiliary winding on the flyback transformer for voltage feedback across the isolation barrier increases the number of components and design complexity.
This reference design is a 120Vac to 17V flyback converter with synchronous rectification on the secondary side. A lossless passive clamp on the primary side helps this reference design achieve greater than 93% maximum load efficiency. When combined with the PMP20172, this reference design becomes a complete solution for a 36W USB Type-C dual-port solution.
TEA1936xDB1521
Due to its simplicity and low cost, the flyback converter is the preferred choice for low-to-medium isolated DC-DC power-conversion applications. However, the use of an optocoupler or an auxiliary winding on the flyback transformer for voltage feedback across the isolation barrier increases the number of components and design complexity. The MAX17690 eliminates the need for an optocoupler or auxiliary transformer winding and achieves ±5% output voltage regulation over line, load, and temperature variations.
The MAX17681/MAX17681A is a high-voltage, highefficiency, iso-buck DC-DC converter designed to provide isolated power up to 5W.
6.6 W wide-range input, dual output, isolated flyback converter for anti-magnetizing interference in utility meters using 900 V LinkSwitch-XT2 (LNK3696P)
The MAXREFDES1273 is a Power-over-Ethernet (PoE) powered device (PD) and an active clamp forward DC-DC converter (ACFC) that delivers up to 850mA at 48V from 39V to 57V supply voltage
The MAX17595 is a peak-current-mode controller for designing wide input-voltage flyback regulators.
This document details the MAXREFDES128# subsystem reference design, a 36V to 57V input, 5V output, no-opto flyback isolated power supply capable of 12.5W. Design files and test results are included. Hardware is available for purchase.
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