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8V to 18V Input, 20V to 35V Output, 700-mA Non-Synchronous Boost Current Regulator for LED Drive



  • 8-V to 18-V Input Range
  • 700-mV Fixed Output Current, Adjustable with 1210 Package Resistor Change
  • 42-V Open Circuit Protection
  • 300-kHz Switching Frequency
  • Single SO-8 Switching MOSFET and Rectifier Diode
  • Double Sided 2-Layer PCB With All Components On Top Side
  • Active Converter Area 1.25 x 1.25 (less than 1.6 in)
  • Convenient Test Points for Probing Output Voltage, Current Sense, Switching Waveforms andNon-Invasive Loop Response Testing

Texas Instruments  TPS40211EVM-352

The TPS40211EVM-352 evaluation module (EVM) is a fixed frequency, (300 kHz), non-synchronous boostconverter providing fixed 700-mA output at 20 V to 35 V from a 8-V to 18-V input source. The EVM is designed to start up from a single supply, so no additional bias voltage is required for start-up. The module uses the TPS40211 Non-Synchronous Current Mode Control Boost Controller with integral N-channel FET driver.

TPS40211EVM-352 is designed to use a loosely regulated 12-V (8 V to 18 V) source to produce aregulated current driver at 700 mV for constant current loads such as high-brightness LEDs.TPS40211EVM-352 is designed to demonstrate the TPS40211 in a typical LED Driver for 6 to 10 LEDswhile providing a number of test points to evaluate the performance of the TPS40211 in a given application. The EVM can be modified to other input voltages or output currents by changing some of the components.