This application note presents a reference design for a signal-lamp linear LED driver that consists of six strings of 4 LEDs per string and delivers 350mA per string with a common cathode configuration. Common cathode arrangements require that the current-sense resistors be placed on the high (anode) side, which forces the LED drivers to use a level shifter.
This document details the MAXREFDES138# subsystem reference design, a 36V to 57V input, 12V output, no-opto flyback isolated power supply capable of 12W. Design files and test results are included. Hardware is available for purchase.
65 W isolated flyback general purpose adapter using MinE-CAP ICs to achieve the highest possible power density and design simplicity
This reference design provides design guidance, data and other content for a 1.6kW 48V output power supply using semi-bridgeless PFC and isolated phase-shifted full-bridge DC-DC converters.
The Multi Standard 45W Mobile Charger enables the design of power supplies featuring extreme low standby power with the output voltage in full regulation, very high efficiency and high reliability. The NXP chipset used is targeting mobile and notebook power supplies with power requirements up to 100W. Supplies can be designed easily and with a minimum number of external components.
This is a reference design for a SEPIC/linear LED-display backlight driver for eight parallel strings of 8 WLEDs (white LEDs) at 70mA/string. The dimming ratio is 4000:1. The input voltage is 16V to 36V with 50V transients. The design combines a SEPIC switching power supply with adaptive feedback and linear current sinks for high dimming ratios. The MAX16809 16-channel LED driver is featured.
The Multi-Standard 27W Mobile Charger enables the design of power supplies featuring extreme low standby power with the output voltage in full regulation, very high efficiency and high reliability. The NXP chipset used is targeting mobile and notebook power supplies with power requirements up to 100W. Supplies can be designed easily and with a minimum number of external components.
This single-layer reference design for pedestal fans and other similar appliances features 2-inch diameter pads and an integrated controller that reduces component count. In addition, sensorless control eliminates the need for Hall sensors and provides multiple protection functions such as overcurrent protection, undervoltage lockout, and overheating protection, each of which improves the robustness of the design. This reference design is suitable for 8V-24V input voltage and is capable of delivering 3A (peak)/2A (rms) phase current.
42 W Dual Port Isolated Flyback Power Supply with 30 W USB PD 3.0 and 12 W USB-A Port Using InnoSwitch3-Pro with PowiGaN Technology (INN3379C-H302)
The FRDM-HB2001FEVM evaluation kit allows users to practice using all features of the MC33HB2001 H-bridge device with FRDM-KL25z and SPIGen software.
The bq297xy device provides protection for Li-ion/Li-polymer batteries and monitors across external power FETs to provide protection against high charge or discharge currents. Additionally, there is monitoring and protection against overcharging and depleted batteries. These features are achieved with very low current consumption when operating in normal mode.
Flyback converters are the preferred topology in isolated converters for medium and low power range applications due to their simplicity and economic considerations. As flyback converters are isolated converters, the output voltage and the current are traditionally regulated by utilizing the secondary side regulation (SSR) composed of an optocoupler and a secondary-error amplifier.
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.
Stackable monitors and protectors used in large lithium-ion batteries to provide monitoring, balancing and communication functions. Each bq76PL455A-Q1 EVM can manage 8 to 16 cells (12V minimum) in Li-ion battery applications. Up to 16 bq76PL455A-Q1 EVM modules can be stacked. The system provides fast cell balancing, diagnostic functions and modules for controller communication. An independent protection circuit is also integrated.
The MAX17681/MAX17681A is a high-voltage, highefficiency, iso-buck DC-DC converter designed to provide isolated power up to 5W. The device operates over a wide 4.5V to 42V input and uses primary-side feedback to regulate the output voltage .
This 45W adapter reference board is designed to be a form, fit and functional test platform for low-cost charger applications to demonstrate the state-of-the-art 700V CoolMOS™ P7 Super Junction (SJ) MOSFETIPN70R600P7S in SOT-223 packaging. The reference adapter board is designed to fit into an extremely small form factor while featuring high efficiency, low standby power and various protection modes to achieve a highly reliable system. The board passes EMI (conducted and radiated), ESD immunity and surge testing and is ready for production after final verification by the customer with a small number of changes.
EEWorld
subscription
account
EEWorld
service
account
Automotive
development
community
Robot
development
community
About Us Customer Service Contact Information Datasheet Sitemap LatestNews
Room 1530, 15th Floor, Building B,
No.18 Zhongguancun Street,
Haidian District,
Beijing, Postal Code: 100190
China
Telephone: 008610 8235 0740
京公网安备 11010802033920号
