Design an LED driver circuit with pulsed switch input

I need an LED flash circuit to form part of a portable consumer product. It is powered by Lipo battery, but the main working voltage is 5V. There are two LEDs, which should be driven at a strict current between 2.5A and 3A. The forward voltage drop may vary (see datasheet attached) so the current will need to be controlled. The diodes are placed in parallel, so restrict the total current through both diodes to 5A-6A.

The flash should be triggered by the STROBE pin, which is 3.3V when the flash should be on, and 0V when it should be off. A strict maximum of 15mA can be drawn through this pin. The pulses on this pin are up to 50ms in length. The response time of the diodes from off to on should be as short as possible.


- Schematic

- Document with theory of operation, explanation & calculations for utilised parts

- Any components which cannot be sourced from the inventory list (attached) should be justified

Skills: Electrical Engineering, Electronics, Circuit Design, Lighting, Internet of Things (IoT)

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About the Employer:
( 2 reviews ) Woolloongabba, Australia

Project ID: #29957775

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Best PCB Design Expert at your doorstep! Dear Client, We can provide Design an LED driver circuit with pulsed switch input as your requirements. We have gone through all pdfs which you shared . We couldn’t stop ourse More

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Hi. I am an electronic engineer with good experience in LED driver circuit design. I have read your project details, so I am very confident in your project. I will keep good communication for further discussion. Best r More

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Thanks for Freelancer which gives chance to meet you. I hope you are good. I have read your description carefully and understand everything. I have 12 year experience on analog design, LED driver, power electronic and More

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Dear Client, I will deliver an LED driver circuit with pulsed switch input in a quality and timely manner. I have read and understood your requirements and could do it for you in the least time and utmost superior qua More

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Hello, I am an electronics and telecommunication engineer and I am quite experienced with hardware and embedded systems' design. I have designed couple of led lighting projects and I checked your requirements. I am sur More

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Operation at 2.5A-3.0A may not be possible with LEDs in the F4 bin. Which Vf bin are you planning on using? What is the minimum pulse width? Regards, Jim

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Hello. Seems like the main challenge is to design a current stabilizing circuit with a low voltage drop on it, about 1.6 V (difference between 5 V power supply and the max voltage drop on LED). Still not so difficult, More

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I read LED flash project. I can this task. I have experience power electronic( buck, boost, flyback, battery charge/discharge protection, motor control circuit, inverter, BLDC motor control(FOC)), analog electronic and More

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