STMicroelectronics’ Single-chip Digital-Energy Controller Simplifies Design and will increase Flexibility in LED-Lighting Functions

STMicroelectronics’ STNRG012 is a extremely built-in and space-saving digital energy controller with superior distortion mitigation that delivers a super answer for LED-lighting functions.

The system comprises a multimode power-factor correction (PFC) controller, resonant half-bridge controller, and 800V startup circuit, managed by a digital engine. The PFC controller adjustments dynamically between transition-mode, discontinuous-current mode (DCM), and valley skipping for optimum effectivity. The half-bridge controller executes ST’s patented time-shift management (TSC) for correct mushy switching.

With an input-voltage vary as much as 305VAC, the STNRG012 additionally operates from a DC provide concentrating on designs into each battery-powered and line-powered functions as much as 300W.

The digital engine is hosted on an 8-bit core and performs optimized management algorithms. It manages the PFC and half-bridge circuits through high-speed state-machine event-driven (SMED) peripherals. Further devoted {hardware} IP blocks together with an influence supervisor and burst-mode engine guarantee sturdy operation and decrease energy consumption in idle mode. System security options together with surge safety and anti-capacitive safety for the half-bridge are built-in and managed by {hardware} to make sure quick motion for superior reliability.

The STNRG012 shops working parameters and calibration coefficients on-chip in non-volatile reminiscence (NVM), which permits customers to customise settings and program the system throughout manufacturing. Digital programming additionally saves exterior parts historically used for configuration, decreasing the invoice of supplies and circuit dimension. A UART port for monitoring and communication simplifies testing and permits real-time supervision for enhanced reliability.

The STNRG012 is in manufacturing now and accessible in a 20-pin small-outline (SO-20) package deal for $2.08, for orders of 1000 items.

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