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CY8CLED0xx0x: Topology and Design Guide for Circuits using PowerPSoC® | Cypress Semiconductor

CY8CLED0xx0x: Topology and Design Guide for Circuits using PowerPSoC®

Last Updated: 
Jun 26, 2020

Cypress’s PSoC® family of devices is well established in the field of programmable mixed-signal microcontroller-based technology. The traditional method of implementing power management in high-brightness LED (HB LED) lighting systems involves using similar system-on-chip devices to interface with high-power discrete devices, such as constant current drivers and MOSFET switches.

In PowerPSoC®, the classic PSoC core is combined with high-performance power electronics. This results in an integrated intelligent power electronics solution in a single QFN package. PowerPSoC significantly reduces the bill of material (BOM) cost, part count, and board space when implementing power management systems, while retaining performance. This family of devices (CY8CLED0xx0x) combines up to four independent channels of constant current drivers.

The level of integration and versatility offered by PowerPSoC simplifies design considerably, making it accessible to designers who are less familiar with the power electronics domain. This document addresses the three key topologies supported by PowerPSoC: floating load buck, floating load buck-boost, and grounded boost. It also provides guidelines to address other system considerations, such as working with a 5-V input system and reduction in system wire count. By becoming familiar with the issues and following the guidelines in these chapters, designers can improve the integrity of their designs and achieve first-pass success.