The BP9918S is a high-performance, primary-side regulation (PSR) constant current LED driver controller manufactured by Bright Power. It is designed for use in isolated LED lighting applications where accurate current regulation, high efficiency, and compact size are important.

Applications:

• LED Bulbs
• LED Downlights
• LED Tube Lights
• Small LED Power Supplies
• General Lighting Applications

Features:

• Primary-Side Regulation (PSR)
• Constant Current (CC) Output
• High Precision Current Regulation
• High Efficiency
• Built-in Overvoltage Protection (OVP)
• Built-in Overcurrent Protection (OCP)
• Built-in Short-Circuit Protection (SCP)
• Over-Temperature Protection (OTP)
• Open-Loop Protection

Benefits:

• Provides accurate and stable LED current, ensuring consistent brightness.
• High efficiency minimizes power loss and reduces heat dissipation.
• Simplified design reduces BOM cost and PCB space.
• Comprehensive protection features enhance system reliability and prevent damage.
• Eliminates the need for optocouplers, reducing component count and cost.

Additional Details:

The BP9918S utilizes primary-side regulation to achieve accurate constant current control without requiring secondary-side feedback components. This simplifies the design and reduces the overall BOM cost. The device is designed to operate over a wide input voltage range. It incorporates multiple protection features to safeguard the LED driver and the LED load from various fault conditions. The BP9918S offers excellent line and load regulation. It is available in a small package, making it suitable for compact LED lighting applications. The device complies with various safety and EMC standards. It is designed to provide flicker-free operation and is suitable for applications where high-quality lighting is required. It uses a proprietary control algorithm that optimizes efficiency and minimizes EMI. The output current is programmable via external resistors.