DIGITAL POWER PROCESSOR (IXC)
Microcontroller for managing real-time power converters
The SA4011 (IXC) is a mixed signal integrated circuit with analog sensing functions and digital processing. It contains a micro-processor based on a 32-bit RISC core, a set of peripherals for timing control, inter IC communications, data memory, and general purpose digital inputs and outputs (GPIO).
The SA4011 (IXC) provides the timing information for the power MOSFET / SiC / GaN signal processing and performs functions required for power train.
The control of the DC to AC inversion is based on sampling analog signals from the power train by the voltage sensing block of the SA4011 (IXC). These signals are then band-limited with anti-aliasing filters and digitized with high resolution A/D converters. Together with signals acquired from the current sensing block, they form an input to the SA4011 (IXC) control algorithm. The output of this algorithm is a set of signals that control the power train through the driver timing control block.
Two communications ports to the 32-bit micro-controller are available through the UART interfaces.
Features Include
Three 100MHz programmable timing engines supporting eight driver outputs
DC to AC
PWM
Current mode control
Dedicated smart digital PLL for grid sync and dedicated sensing comparator
32-bit RISC micro-controller core operating at up to 50MHz with 64KB of SRAM memory and 4kB of ROM
Rich power control centric analog periphery
Two programmable slope dV/dt sensors (for soft switching timing)
Five 10-bit, 1.4MS/s ADCs; four independent and one multiplexed, followed by digital filters
Twenty-four 10ns fast comparators
Ten 10-bit analog DACs for internal comparator threshold setting
Differential current sensing amplifier interface
Temperature sensing
Sample Applications
Single-panel and dual-panel micro-inverters
High efficiency battery charge controllers
Industrial automation controllers
Switch Mode Power Supplies (SMPS)