MR11/16 LED Lamp LED driver design and challenges I

<< Go Back Posted By:admin on Mar 14,2015in Industry News

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In addition to the regulations and standards, there are lots of other factors that need to be considered that can impact design:

1. Development cycle-time and design complexity

2. Efficiency and efficacy

3. Operating temperature

4. No flicker & No flashing

5. Constant current output tolerance

6. Vendor selection and consolidation

7. Cost, Reliability and lifetime of the driver

8. Protections – OVP, OCP, OTP, short-circuit LED, open-circuit LED

9. Limited printed circuit board (PCB) space or volume (height) constraints

10. Identifying a power topology that meets input and output voltage-current parameters, thermal design, safety regulations, and protection needs

11. Dimming and dimming range

MR11 & MR16 bulbs are typically halogen lamps and common types are 20W, 35W and 50W ratings. The input voltage can be DC 12V or 24V or plugged directly into a 120V or 230V AC mains supply. The 12V or 24V can also be derived from a simple transformer that takes the mains AC voltage and outputs a 12V/24V AC input to the light socket.