REF_ICL8810_LED_43W_BM - Infineon Technologies

Overview

43W high power factor flyback converter with constant voltage output based on ICL8810

The REF_ICL8810_LED_43W_BM is a 43W reference design featuring Infineon’s high power factor flyback controller ICL8810. The board is a constant voltage (CV) secondary-side regulated (SSR) system and is intended to be used with a constant current (CC) converter for LED lighting applications.

Two-stage topologies are growing because of the convenient scalability of power on the primary side as and the features on the secondary side. REF_ICL8810_LED_43W_BM is designed as plug-and- play solution and can be combined with secondary side DC/DC boards.

As a default setup, the reference design board is assembled with a start-up circuit based on a depletion-mode MOSFET BSS126I on a very small adapter board. This setup offers the lowest standby losses. If low standby consumption is not necessary, the start-up circuit can be changed to a resistive start-up.

This reference design is provided with two regulation circuits. Both circuits are designed as plug and play solutions, but at least one has to be connected to the main board.

The two boards shall show the trade-off between cost; here the TL431 board offers a low-cost solution, and standby performance, while the op-amp board shows an overall 30mW better performance.

Summary of Features

Constant voltage (CV) secondary side regulated (SSR) reference design for LED lighting applications
ICL8810 provides integrated burst mode for very low stand-by power < 100mW
Power factor (PF) > 0.9 and THD < 10% across a wide load range (AC input up to 277V_rms)
Maximum AC input voltage 90 – 305V_rms
Critical conduction mode and quasi-resonant mode with smart valley hopping

Benefits

Best fit topology for LED driver with minimum dimming levels down to 0.1% and dim-to-off
Enables smart lighting
Two-stage topology combines scalability with numerous features
High light quality
Cost-effective and bottom-up design
Flexibility and low BOM for many applications

Potential Applications

LED lighting
Smart lighting
LED driver and luminaires up to 125W
Adapter and charger, flat TV, all-in-one PC, monitors up to 125W

More

With its benchmarking performance in power factor and total harmonic distortion at full-load and low-load conditions, ICL8810 enables window drivers and platform designs. Furthermore, the IC combines optimum efficiency and low EMI without compromising light quality.

Being the advanced featured variant of the ICL88xx family, ICL8810 is the perfect fit for on-off drivers, including dim-to-off. Its additionally integrated burst mode enables a very low stand-by power < 100mW. Consequently, more power budget for additional components can be used and ICL8810 is ideally suited for smart lighting applications in connection with microcontrollers.

To scale the features according to your application and needs, check out the basic-featured ICL8800, the fully-featured ICL8820 and the respective boards:

For primary-side regulation of the single-stage flyback LED controller ICL8810 choose REF_ICL8810_LED_42W_PSR.

Modular Lighting boards

At Infineon we offer a broad variety of primary side ACDC and secondary side DCDC boards dedicated to LED lighting. The LED lighting boards can easily be stacked together for plug-and-play solutions.

Find out more about our modular boards

List of components