Offline LED Driver Reference Design

This application note presents a reference design for a nonisolated LED driver intended to operate directly from a 400V _DC input. The design drives a string of 27 WLEDs (white LEDs) or, optionally, 6 amber LEDs at 400mA. The topology is a discontinuous flyback with a transformer. The MAX16801 HB (high brightness) LED controller is featured.

CN0158

Universal Serial Bus (USB) Hub Isolator Circuit

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Water meter reference design using LC sensor with Scan I/F

In battery-powered water meters, battery life over several years is key. One of the challenges is to continuously measure water flow information while using as little power as possible. The Scan I/F sensing peripheral integrated on the ultra-low power MSP430 microcontroller solves this problem. In the water meter design, the scan interface coupled to the LC rotation detection sensor continuously detects the rotation of the thruster while the rest of the microcontroller is in a low-power sleep mode. This reference design demonstrates how to use the scan interface to achieve ultra-low power consumption (versus the same detection method using external circuitry).

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RDR-648 - 150 W Power Factor Corrected LLC Power Supply Based on HiperPFS-4 and HiperLCS

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MAXREFDES1126: 0.72V/20A power supply for Xilinx Ultrascale+ FPGAs

The MAXREDES1126 provides the internal core voltage (V_CCINT) for Xilinx Ultrascale+ FPGAs.

MAXREFDES113#: Isolated 24V to 12V 20W power supply

This document details the MAXREFDES113# subsystem reference design, a 17V to 36V input, 12V output, flyback isolated power supply capable of 20W. Design files and test results are included. Hardware is available for purchase.

20 WT Lamp Direct AC LED Driver with Analog Dimming

MAXREFDES1046: wide input range, 3.3V/3A output synchronous rectification, step-down DC-DC converter, two-layer circuit board design to reduce costs

The MAX17574, high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4.5V to 60V input. The converter can deliver up to 3A current.

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MAXREFDES39#: Power Amplifier Biasing with MAX11300 PIXI

Maxim's Power Amplifier Biasing (MAXREFDES39#) features a PA Bias circuit with the flexible Programmable Mixed Signal I/O (PIXI™) product, the MAX11300. The 2-stage amplifier design biases a 15W, LDMOS PA implemented with unprecedented simplicity, and is capable of biasing many existing PAs. Design files are available and boards are available for purchase.

DI-140 - 10W adapter for portable audio players with latching overvoltage and thermal shutdown protection

10 W Adapter for Portable Audio Players with Latching Overvoltage and Over-Temperature Shutdown Protection

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KIT33810EKEVB: Evaluation circuit board - MC33810EK, automotive engine control IC

The evaluation board supports the MC33810EK automotive engine control IC for injectors, solenoids, lights, and relays.

TEA1892TS GreenChip SR controller has been added onboard for flyback

TEA1892TS GreenChip SR Controller add on board for Flyback

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Anti-interference capacitive proximity sensor system reference design

The FDC2214 proximity and capacitive sensing design demonstrates how to use TI's capacitive sensing technology to sense and detect the presence of various objects. This design is a complete hardware and firmware solution. The firmware processes data from a proximity sensor and two capacitive touch buttons via the FDC2214 to determine whether an object is within the target sensing area. A dedicated colored LED lights up whenever the device detects an object in close proximity to the board or detects a button press. This design is powered by one AA battery.

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DER-583 - 106W high line input non-PFC CV/CC flyback charger power supply

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MAXREFDES138#: No optical isolation, PoE, 48V to 12V, 12W flyback power supply

To meet the increasing demands for isolated Power over Ethernet (PoE) power solutions, Maxim’s power supply experts have developed

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2018 Electronic Competition Question C-Wireless Charging Electric Car (Xidian University)

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MAXREFDES1047: wide input range, 5V/3A output synchronous rectification, step-down DC-DC converter, two-layer circuit board design to reduce costs

The MAX17504 high-efficiency, high-voltage, synchronously rectified step-down converter with dual integrated MOSFETs operates over a 4.5V to 60V input. The converter can deliver up to 3.5A and generates output voltage from 0.9V to 90% VIN. Built -in compensation across the output voltage range eliminates the need for external components. The feedback (FB) regulation is accurate to within ±1.1% over -40°C to +125°C. The devices are available in a compact (5mm x 5mm ) TQFN lead (Pb)- free package with an exposed pad. Simulation models are available. The MAX17504 features a peak-current-mode control architecture with a MODE feature that can be used to operate the device in pulse-width modulation (PWM) , pulse-frequency modulation (PFM), or discontinuous mode (DCM) control schemes.

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MAXREFDES1214: Portable 1.5A USB charger with Micro-USB input and USB Standard-A output

The MAXREFDES1214 is a portable USB charger that uses a lithium-ion (Li+) battery to charge a USB device from a USB Standard-A connector.

RDR-912 - 6.6W non-isolated buck converter for small appliances using LinkSwitch-TN2

6.6 W non-isolated buck converter for small appliances using LinkSwitch-TN2 (LNK3207D)

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Flexible system fault protection circuit design

When it is necessary to plug in a board into a system that is currently powered, it is critical to control the inrush current to prevent damage/system fault conditions. This application provides a simple circuit to achieve this function as well as an easy method for resetting the system and monitoring against temperature issues.