The TPS92410 features a wide input voltage range of 9.5V to 450V. It can be used as a standalone high-voltage LED string current regulator or in conjunction with TI's TPS92411 floating switch to power applications driven linearly directly from main AC. Both the TPS92410 and TPS92411 provide driver and LED circuit protection functions, delivering low-ripple LED current solutions without the need for inductors. The TPS92410 provides an analog dimming input pin with an LED shut-off function, allowing for convenient control of light intensity with an intelligent MCU-based lighting fixture using an ultra-low power MSP430F5172 microcontroller or a SimpleLink™ ZigBee® CC2530 wireless MCU.

Key Features of TPS92410

• AC and DC applications

o By including low voltage lockout, MOSFET overvoltage protection, and thermal foldback functions, it prevents damage to the driver and LED in the event of a failure condition.

• Using TPS92411 in AC applications

o In AC main-driven LED lighting applications, existing TRIACs and reverse phase dimmers are compatible.

o The on-chip internal multiplier generates a very high power factor correction (PFC) of 0.95 or higher with line regulation within 3%.

TI's Floating Switch Architecture

TI's floating switch architecture enables low LED current ripple performance comparable to Switch Mode Power Supply (SMPS) designs. The TPS92410 and TPS92411 do not require inductive components for power transmission, which simplifies the design and reduces costs and space.

Supply, packaging, price

The TPS92410 is available in a 13-pin SOIC package and is currently being supplied in bulk through TI and TI authorized distributors. The price is $0.65 per unit based on a quantity of 1,000.

LED Lighting Tools and Support

• The 120V TPS92410EVM-001 and 230V TPS92410EVM-002 optical engine evaluation modules are currently available for purchase at a price of $99 each.

• You can download the 120V or 230V TPS92410 design calculator tool to select external components.

• LED current ripple can be predicted using the TPS92410 PSpice transient phenomenon model.