Power Electronics / Power Management


Boost converter for white LED market

26 March 2003 Power Electronics / Power Management

Intersil's first device in a new family of products for white light emitting diode (LED) displays is a high frequency pulse width modulation (PWM) step-up regulator capable of driving up to 12 LEDs while ensuring uniform brightness in white LED backlighting applications. Intersil's new EL7513 provides the precision, accuracy and efficiency required in cellphones, personal digital assistants (PDAs), digital cameras and other battery-powered electronics.

"New generations of portable products use colour displays that depend on white LED backlighting to ensure brilliance and colour accuracy. Our EL7513 white LED regulator is tailored to the demanding performance and low power requirements of these products," said Michael Jennings, director of strategic marketing for Intersil's Elantec video and flat panel products. "This new PWM step-up converter is specially designed to boost maximum output voltage in order to drive four LEDs in series or 12 LEDs in a series/parallel configuration, ensuring uniform brightness across white LED backlit screens.

With the ability to boost up to 18 V, the EL7513 features soft-start and dimming control, offers ±4% LED diode current accuracy and can achieve up to 89% efficiency when driving a 30 mA load. The device operates from 2,6 to 5,5 V and features a standby mode of just 1 mA maximum.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Rugged railway-grade DC-DC power modules
iCorp Technologies Power Electronics / Power Management
iCorp Technologies has introduced the AIPUPOWER ZCD100 and ZCD150 Series, a family of rugged DC-DC converters designed to meet the demanding electrical and environmental requirements of railway and transportation systems.

Read more...
NXP has expanded its MCX A Series
Altron Arrow AI & ML
NXP has significantly expanded its MCX A Series of Arm Cortex-M33 microcontrollers, doubling the portfolio with six new families aimed at industrial and IoT edge applications.

Read more...
Surviving the extremes: Understanding shock and vibration in MEMS sensors
Altron Arrow Editor's Choice Test & Measurement
By considering factors such as mechanical headroom, damping, and system-level robustness, designers can ensure that the chosen sensor not only survives, but performs reliably over time.

Read more...
Advanced pressure monitoring sensor
EBV Electrolink Test & Measurement
The Infineon KP497 is an advanced, highly integrated digital pressure sensor designed for demanding automotive and industrial applications, with a particular focus on battery management systems.

Read more...
Four-quadrant regenerative grid simulator
Conical Technologies Power Electronics / Power Management
The IT7900EP series high-performance regenerative grid simulator from ITECH is a full four-quadrant AC grid simulator capable of both sourcing and sinking power.

Read more...
90 W PSU with 150% boost capability
Brabek Power Electronics / Power Management
RECOM’s cost effective REFIN2U-S90/CL DIN rail AC/DC boasts a 90 W rating with a boost capability of 150% for 4,5 seconds to allow for surge loads.

Read more...
Exploring Bluetooth Channel Sounding
Altron Arrow Telecoms, Datacoms, Wireless, IoT
NXP has enabled BCS on the MCX W72 multi-protocol wireless MCU, which supports Bluetooth Low Energy 6.0, Thread, Zigbee, and Matter.

Read more...
Standalone USB PD controller
Future Electronics Power Electronics / Power Management
The STUSB4531 from STMicroelectronics is a standalone USB Power Delivery sink controller designed to streamline the implementation of USB-C power negotiation in sink devices without requiring a full software stack on a host microcontroller.

Read more...
Dual-band Wi-Fi 6 companion module
Altron Arrow Telecoms, Datacoms, Wireless, IoT
The SimpleLink Wi-Fi CC33xx family of devices from Texas Instruments are dual-band Wi-Fi 6 companion modules enabling engineers to connect more applications with confidence.

Read more...
Power module enhances AI data centre power density
Altron Arrow Power Electronics / Power Management
Microchip’s MCPF1525 power module with PMBus delivers 25 A DC-DC power and is stackable up to 200 A.

Read more...









While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.




© Technews Publishing (Pty) Ltd | All Rights Reserved