TPS92692EVM-880

The TPS92692EVM-880 from Texas Instruments is a TPS92692-Q1 boost and boost to battery LED driver evaluation module. It is fully assembled and tested LED driver that can be configured as either a boost or a boost to battery topology to power a single string of series connected LEDs. Accurate closed-loop LED current regulation is achieved using a low offset rail to rail current sense amplifier along with high side current-sensing implementations. DC LED current set point can be varied over a 15:1 ratio using high-impedance analogue adjust (IADJ) input. PWM dimming of LED current is achieved by directly modulating the PWM/DIM input pin with the desired duty cycle or by enabling the internal PWM generator circuit. Optional PDRV gate driver output can be used to drive an external P-Channel series MOSFET. It supports continuous LED status check through the current monitor (IMON) output. Includes open drain fault indicator output to indicate LED output overvoltage & undervoltage conditions.

• Versatile LED driver capable of driving a string of 1 to 20 series-connected white LEDs
• Wide input voltage range of 4.5V to 18V
• Better than ±4% LED current regulation using a high-side current sense resistor
• Spread spectrum frequency modulation for improved EMC
• Internal analogue voltage to PWM duty cycle generator for stand-alone dimming operation
• Supports boost, buck-boost (boost to battery), SEPIC and flyback LED driver topologies
• Supports automotive start-stop and load dump transients up to 65Vmax

Alkalmazások

Lighting