High-Efficiency LED Driver with CR Micro Power Management

Application

Description

Complete LED driver solution using CR Micro MOSFETs and power management ICs for commercial and residential lighting applications.

Core Advantages

CR Micro high-voltage MOSFETs CR Micro high-voltage MOSFETs

Optimized power management ICs Optimized power management ICs

Complete driver reference designs Complete driver reference designs

Cost-effective for high-volume production Cost-effective for high-volume production

Local technical support Local technical support

Recommended Bill of Materials (BOM)

Item	Part Number	Description	Quantity	Datasheet
1	CSJ20N65A	650V MOSFET for flyback converter	1	📄 Download
2	CR6850	PWM controller IC	1	📄 Download
3	CRSE0090	Secondary side controller	1	📄 Download

Applications

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Technical Specifications

Topology

Flyback or Buck

Input Voltage

85-265VAC

Output Power

5W - 200W

Efficiency

Up to 93%

Power Factor

>0.9

Customer Success Stories

Industrial Customer

Industrial |

Challenge

Needed reliable solution

Solution

Implemented our solution

Results

Achieved expected performance

Commercial Customer

Commercial |

Challenge

Cost-sensitive application

Solution

Optimized solution design

Results

Met cost targets

FAE Expert Insights

李

李明

Senior FAE - Power Supply

10+ years

Professional Insights

This solution provides excellent performance for target applications.

Key Takeaways

Select topology based on power and isolation requirements
Use CR Micro high-voltage MOSFETs for primary side
Implement proper EMI filtering
Optimize for efficiency and thermal performance

Ready to Implement This Solution?

Contact our FAE team for design support and quotes

Frequently Asked Questions

What topologies are supported for LED driver design?

The CR Micro LED driver solution supports multiple topologies: (1) Flyback - most common for isolated drivers up to 100W, simple and cost-effective. (2) Buck - for non-isolated low-voltage applications, high efficiency. (3) Boost - for output voltage higher than input. (4) Buck-Boost - for wide input voltage range. (5) LLC resonant - for high-power applications above 100W, highest efficiency. Topology selection depends on power level, isolation requirement, input voltage range, and cost targets. CR Micro provides reference designs for all these topologies.

Contact our FAE team for topology recommendations based on your specific LED driver requirements.

How do I achieve flicker-free operation?

Flicker-free LED operation requires careful design: (1) Adequate output capacitance - use sufficient capacitance to filter ripple current. (2) Current regulation - implement precise constant current control. (3) Feedback loop - design stable feedback loop with proper compensation. (4) Input filtering - minimize input voltage ripple affecting output. (5) PWM dimming - if used, ensure PWM frequency is above 200Hz to avoid visible flicker. CR Micro's controller ICs include features specifically designed to minimize LED flicker.

Contact our FAE team for flicker-free LED driver design guidelines.

What efficiency can be achieved with CR Micro LED drivers?

CR Micro LED driver efficiencies: (1) Low power (5-20W) - typically 85-90% efficiency with flyback topology. (2) Medium power (20-60W) - typically 88-92% efficiency with optimized flyback or LLC. (3) High power (60-200W) - typically 90-93% efficiency with LLC resonant topology. Efficiency depends on topology, component selection, operating conditions, and optimization. CR Micro's low-RDS(on) MOSFETs and optimized controllers help achieve high efficiency. Our reference designs include efficiency optimization guidelines.

Contact our FAE team for efficiency optimization recommendations for your specific LED driver design.