MAX17023CAUI/V+T

Working Principle

The MAX17023CAUI/V+T utilizes a buck switching topology to regulate the input voltage. The chip itself contains three stages: the inductor current sense amplifier, the buck regulator and the full-bridge driver. The job of the inductor current sense amplifier is to measure the voltage drop across an inductor and adjust the buck regulator accordingly. The buck regulator then takes the voltage and current signals from the inductor current sense amplifier and uses them to adjust the MOSFET gate voltages to regulate the output voltage. Finally, the full-bridge driver takes the gate voltage signals from the buck regulator and drives the MOSFETs to regulate the output voltage.

The chip contains several features that help make the buck switching topology more efficient and reliable. It has a peak current limit and a soft start feature allowing for smooth transitioning from startup to load current. It also has a 5-bit digital-to-analog converter (DAC) for accurately setting the overvoltage, undervoltage, and over-current thresholds. Additionally, the chip has auto PFM/PWM switching capabilities, allowing for increased efficiency when handling light loads, and a frequency-mode feature for synchronizing to an external clock.

The MAX17023CAUI/V+T also contains a variety of protection features, including over-current protection, over-voltage protection, under-voltage protection and thermal protection. This helps ensure the stability and reliability of the power supply, even in challenging and hazardous conditions. Additionally, this chip is optimized for single-phase and multiphase architectures and features improved light-load efficiency. The combination of these features allows the MAX17023CAUI/V+T to provide fast transient response, high efficiency, and excellent line and load regulation.