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Infineon Introduces Efficient NFC Programming Method for LED Drivers

Munich, Germany – October 14, 2019 – For fast and cost-effective NFC programming of LED drivers, Infineon Technologies AG (FSE: IFX / OTCQX: IFNNY) has developed the NFC-PWM series NLM0011 and NLM0010 Program.

NFC programming is an emerging technology designed to replace labor-intensive “plug-in resistor” current settings with a contactless NFC interface. It increases operational efficiency by automating programming in the production line, while also providing great flexibility to the value chain. In this way, the type of LED driver is reduced, the selection of the LED module is made simpler, and the end configuration is also achieved.

The NLM0011 and NLM0010 are NFC wireless configuration ICs with configurable PWM outputs for LED applications. They directly use the PWM signal to control the analog driver IC for cost-effective NFC programming. Compared with microcontroller-based solutions, it has the obvious advantage of reducing BOM cost.

Both devices support both passive mode and active mode. In passive mode, the LED driver module is not powered, and the PWM related data is wirelessly configured through the NFC interface. In active mode, once the VCC supply is powered, it generates a PWM output based on the stored parameters. The PWM signal is then converted to the desired DC voltage using an external R/C filter to control the current output of the LED driver.

Another highlight of the NLM0011 is its constant lumen output (CLO) function, which automatically adjusts the LED current to accommodate the aging characteristics of the LED bead, thereby compensating for the drop in the luminous flux of the LED module (aging effect). Utilizing the integrated Run Time Counter (OTC) and LED lamp bead degradation curves stored in the CLO table, the NLM0011 automatically adjusts the duty cycle of the PWM to compensate for LED lamp bead degradation.

They are perfectly matched to mainstream analog driver ICs and can be easily compatible with existing designs without the need for additional software development, replacing the current configuration of “plug-in resistors”. These devices also feature non-volatile memory (NVM) that stores UIDs (unique identification data) and 20 bytes of user data.

The solution is compatible with existing analog LED driver designs and the NFC programming specification of the Module Driver Interface Special Interest Group (MD-SIG). In addition to LED power applications, the NFC-PWM series can also be used in applications such as motor control and SMPS.

Availability

The NLM0011 and NLM0010 in the SOT23-5 package are now available for ordering!

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