The CY8CLEDAC01 is a digital current-mode controller incorporating
proprietary primary side control technology. This new
technology eliminates the cost and complexity in traditional
designs which use opto-isolated feedback and secondary-side
The CY8CLEDAC01 uses an advance digital control algorithm
to reduce system design time and improve reliability. The control
algorithm has cycle-by-cycle adaptive digital regulation; this
enables accurate secondary-side constant-current operation
without the need for secondary-side sense and control circuits.
The cycle-by-cycle adaptive digital regulation features fast
dynamic response and tight output regulation using critical
discontinuous conduction mode (CDCM) when driving LED
loads. The control algorithm for cycle-by-cycle regulation has
internal compensation for guaranteed system phase and gain
margins; requiring no external components for loop compensation.
The CY8CLEDAC01 has full featured circuit protection not
normally available with other primary-side control solutions. The
built-in protection features include over-voltage protection
(OVP), output short circuit protection (OSCP), peak current limit
protection (PCLP), and current-sense resistor short protection
(CSSP), over-temperature protection (OTP).
The CY8CLEDAC01 also operates as a voltage-mode controller
with all the current-mode controller features, allowing it to
operate as a AC-to-DC front-end for intelligent LED controllers
such as Cypress’s PowerPSoC® family.