The MAXREFDES1196 is a DC-DC boost power supply that delivers up to 4A at 24V from a 10V to 18V supply voltage. It is designed for equipment that needs a high-power, 24V output voltage that is generated from a 12V DC bus.
As LEDs are becoming more and more popular, so is the need for small, cost-effective solutions. The MAXREFDES1080 is a constant-current, high-brightness LED (HB LED) driver. It delivers 5W of power to a single LED string, which is included in the design. The circuit is in a step-down configuration and is designed for a 12V input.
The MAXREFDES1131 provides the internal core voltage (VCCINT) for Xilinx Ultrascale+ FPGAs. This reference design targets FPGAs with a -2L speed grade that require 0.72V for VCCINT from a 12V intermediary bus. The converter supports a maximum load of 12A at a 400kHz switching frequency.
Supercapacitors are increasingly being used in a number of applications in electric vehicles, transportation equipment, industrial machinery and utility grids. In the MAXREFDES1215, a supercapacitor-based energy harvester is demonstrated using the MAX17220. The circuit uses a supercapacitor to provide backup energy. The first stage of the circuit charges a supercapacitor, and the second stage of the circuit regulates the voltage from the supercapacitor to supply various sensors with a steady output voltage. In this system, the MAX17220 is used for regulating the output voltage from the supercapacitor.
The MAXREFDES1227 is a miniature 12V output isolated power supply that can deliver up to 2A load current. The design employs the MAX17596 peak-current-mode controller in discontinuous-conduction mode (DCM) flyback topology running at 125kHz. The input voltage range of MAX17596 is 4.5V to 36V; however, an extra bias winding from the transformer is used to power the controller. This allows an input operating voltage of up to 60V for this design.
The MAXREFDES1085 is a miniature, 24V output, isolated power supply that can deliver up to 1A of load current. The design uses the MAX17596 peak-current-mode controller in discontinuous-conduction mode (DCM) flyback topology running at 125kHz.
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 MAXREFDES1204 is a single-output SEPIC converter reference design developed using the MAX16990 controller. This reference design is rated to operate over a wide input voltage range from 6V to 18V. The design can deliver an output power of 24W at 12V. It is targeted for automotive applications.
The MAXREFDES1174 is centered around the MAX17501 ultra small, high-efficiency, high-voltage, synchronous stepdown DC-DC converter with integrated MOSFETs. This design provides a -24V output and up to 150mA of load current with an input voltage range of 22V to 30V. Unlike a traditional design, this reference design is configured to work in a buck-boost topology to produce negative output voltage from positive input voltage.
The MAXREFDES1180 is centered around the MAX17501 ultra small, high-efficiency, high-voltage, synchronous stepdown DC-DC converter with integrated MOSFETs. This design provides a -12V output and up to 150mA of load current with an input voltage range of 4.5V to 5.5V. Unlike a traditional design, this reference design is configured to work in an inverting buck-boost topology to produce negative output voltage from positive input voltage.
The MAXREFDES1049 is a DC-DC buck power supply that delivers up to 3.5A at 5V from a 7.5V to 60V supply voltage. It is designed for equipment that needs to pass the electromagnetic interference (EMI) compliance testing.
The MAXREFDES1199 demonstrates how to build a lowcost buck DC-DC converter using the step-down converter MAX17244 for 5V DC output applications from a 12V to 32V input. This reference design delivers up to 2.5A at 5V. This design uses a two-layer board and minimizes component count to reduce cost.
The MAXREFDES1194 is a no-opto flyback DC-DC power supply that delivers five outputs from a 6V to 60V supply voltage. It is designed for equipment that needs multichannel, isolated power supplies with a wide input voltage range. The MAXREFDES1194 employs the no-opto flyback control technique of the MAX17690. This document explains how the MAX17690 peak current-mode PWM converter can be used to generate five isolated outputs from a 6V to 60V input voltage.
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.
This document details the MAXREFDES120# subsystem reference design, a 17V to 36V 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.
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 MAX17595 is a peak-current-mode controller for designing wide input-voltage flyback regulators. The MAX17595 offers optimized input thresholds for universal input AC-DC converters and telecom DC-DC (36V to 72V input range) power supplies.
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.
Supercapacitors, by their very name, provide unique benefits in modern electronics.
The MAX17595 is a peak-current-mode controller for designing wide input-voltage flyback regulators.
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