LED driver, controller fit on same chip - Embedded.com

LED driver, controller fit on same chip


The PowerPSoC family of integrated embedded power controllers provide a single-chip solution for controlling and driving high-power LEDs. Developed by Cypress Semiconductor, the family integrates four constant-current regulators and four 32-V, 1-A MOSFETs with company's PSoC programmable system-on-chip (SoC), which includes a microcontroller, programmable analog and digital blocks, and memory. The result is an end system with fewer components, faster design cycles, lower power consumption, and higher reliability. Additional applications include white goods and industrial control.

The PSoC architecture consists of an 8-bit MCU, eight programmable digital blocks to serve as timers, counters, PWMs, and UARTs; six programmable analog blocks for functions such as amplifiers, ADCs, DACs, filters, and comparators; 16 kbytes of flash memory.

Other features of the PowerPSoC include up to four programmable hysteretic controllers for controlled current output; four low-side gate drivers with programmable drive strength; a 2-MHz switching frequency; and an auxiliary power regulator that provides the ability to power the chip from a single power supply.

The companion software for PowerPSoC, the PSoC Designer development tool, lets designers quickly and efficiently program the controllers for different lighting and power options. It also allows changes late in the design cycle without having to change the circuit board layout.

The CY3268 demonstration kit drives four LEDs in a 2.5- by 3.5-in form-factor with basic reprogramming/debugging capability. A PowerPSoC evaluation kit (CY3267) is also available for prototyping. It offers a modular approach with interface for daughter-cards to support multiple applications, multiple protocols and customer-specific daughter cards.

More information is available at www.cypress.com/psoc. In addition, free on-line training can be found www.cypress.com/psoctraining.

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