LED lighting in Industrial and Automotive applications is growing at an accelerated rate due to its higher efficiency, reliability and safety over conventional lamps. To maximize its performance, advanced control, optimized drivers and innovative power supplies are required.
One example is in the Industrial and Commercial area where Lighting over Ethernet (LoE) is taking a foothold to develop “smart” buildings that light active work areas rather than a whole room. These new systems require specialized power conversion, power management and EMI/ESD suppression in order to be effective. New system designs are being adopted in this expanding application area. Lighting power requirements can be addressed with existing and upcoming industry PoE standards. PoE solutions for lighting applications cover existing requirements and new standards such as IEEE 802.3bt with products that can support loads up to and above 60 watts. In addition to PoE controllers, EMI/ESD suppression fill complete power management needs for lighting systems and applications.
PoE PD Controllers
Applications requiring PoE typically need high efficiency power conversion, small PCB area and reduced component count. Kinetic Technologies offers a broad portfolio of product solutions which integrate the PD physical interface and DC/DC controller functions into a single package. Supporting solutions from a few watts up to the maximum allowed, Kinetic Technologies provides high efficiency power solutions for nearly every PoE PD application.
The AS11xx family of parts provide solutions for PD controller and integrated primary DC/DC controller with single output isolated or non-isolated solutions for IEEE802.3af (Type 1) and IEEE802.3at (Type 1 and Type 2) PDs. Higher power levels may be achieved using custom programmed PSEs or by implementing the LLDP software interface to enable 4-pair power delivery on the Ethernet cable. These highly integrated solutions provide industry leading performance in a small footprint with integration of front end rectification (AS1113 and AS1114), surge protection, advanced PoE and power management, enabling a flexible design.
The AS1113 and AS1114 PoE + DC/DC controller products address Type 1 PD applications. They are highly integrated CMOS solutions for PoE applications that provide seamless integration of Front End Rectification, Advanced Power Management, EMI Control and High Voltage Protection in the Industry’s smallest footprint.
The AS1138 targets both Type 1 and Type 2 PDs. It is a highly integrated CMOS solution for PoE PDs requiring input power up to 30 watts. The AS1138 integrates input Surge Protection, a digital PD controller, and a low-emission DC/DC controller onto a single die. The AS1138 implements the physical layer PD functionality as required by IEEE® 802.3af and IEEE® 802.3at. This includes 2-event classification, a Type 2 PSE detection indicator (ATDET) in addition to PD detection, under-voltage lockout, and hot-swap FET integration.
13W/30W 802.3af/at PoE PD and Integrated DC-DC Controller
Industrial lighting PoE Ethernet ports can benefit from ESD and Common Mode EMI suppression IC used to improve EMC performance in Ethernet applications. Kinetic Technologies’ EMI/ESD Suppression technology is the industry’s first and is used to improve EMC performance in Ethernet applications. What used to present as a design challenge is solved by this unique solution that offers EMC compliance for Ethernet connected devices. The physical interface of the PD data path to the outside environment is through the PHY. The PHY is also subject to ESD and surge events when an Ethernet cable is inserted. CM emissions are typically filtered by large passive devices located between the PHY and the LAN isolation magnetics. Kinetic Technologies offers the world’s first active ESD and EMI suppressor IC, a 4-channel device in which each channel connects to one wire of the two twisted pair sets. ESD performance, EFT-B and surge immunity, and CM emissions equal or exceed passive techniques while occupying a much smaller footprint.
The Kinetic Technologies EMI/ESD Suppression technology enables system designers to comply with:
CISPR22 and FCC Part 15, Class B requirements for Radiated and Conducted Emissions
IEC 61000-4-3/6 requirements for Radiated and Conducted Immunity, Level 3 or higher
Quad Channel Active EMI & ESD Suppressor for Ethernet Applications
RGB LED Drivers
Industrial and automotive lighting use multi-color RGB LEDs as function indicator lamps, backlighting, and mood lighting. Indicator lamps show power or system status on industrial products such as hand tools and measurement devices, control panels on white or brown goods, instrumentation panels used in automation systems or automotive dashboards. RGB backlighting can be used as an alternative to white in LCD panels for specialist applications, while mood lighting is becoming extremely popular in homes, commercial properties, appliances, and automobiles.
RGB LED drivers allow simplified programmable control of LED color and brightness
3-channel RGB LED drivers permit custom color control
4-channel RGBW devices allow for driving a white LED in addition to the RGB LED
Multiple programming options include I2C or ExpressWire to ease integration with a wide variety of processors and operating systems
Wide range of ramp up/down timing for slow fade in/out effects and complex repeating patterns
Advanced multiplexing techniques reduce interconnects and cabling
Lighting systems can be either mains powered, adapter powered, or battery powered. In the case of adapter and battery powered systems both have input power ports that are subject to voltage surge conditions that can potentially damage the device. Input power port protection is desirable to guard against unreliable power sources.
Overvoltage, and surge protected load switches protect battery charge management and operating circuits, by breaking the connection between the power source and the internal circuitry, in the event the device is connected to a faulty power source or subjected to an abnormal stress condition.
Programmable and fixed over-voltage protection (OVP) shutdown thresholds.
Wrong adapter up to +40V
Reverse voltage down to -28V
Transient voltage protection up to ±200V, compliant to IEC61000-4-2 (Level 4)
ESD protection compliant to ±8kV contact, ±15kV air gap and ±2kV human body model.
Single or dual devices with Uni or Bi-directional blocking
Products designed for lighting applications need voltage rail on/off control to reduce standby or shutdown state power consumption or to enable/disable specific function circuits while the device is operating.
Integrated load switches provide internal power switching and are controlled by simple GPIO logic.
Eliminate the need for bias and level shift circuits associated with discrete MOSFET switches
Provides slew-rate limited turn-on with reverse current blocking and output discharge mode to de-select functions when not required to improve system efficiency.