ISL91127IIAZ-T

ISL91127IIAZ-T application field and working principle

ISL91127IIAZ-T DC DC Switching Regulators are widely used in many diverse applications. This family of high power density switching regulators offer low noise operation, fast time-to-retention under dynamic load conditions, and simplified control loops. The devices feature an on-chip MOSFET that delivers high efficiency and improved thermal management, allowing for efficient operation.

These devices feature integrated advanced control logic that supports current-mode, voltage-mode and Pulse Width Modulation (PWM) control schemes. Programmable output voltage enables precise voltage control and transient response. Digital tracking offers a robust solution for high-side and low-side load-line tracking. These devices provide overload protection for overcurrent and overtemperature, as well as user-selectable slope compensation mode. An integrated clock or sync input provides precise regulation and high frequency operation.

ISL91127IIAZ-T DC DC Switching Regulators address the increasing need for reliable, high power density solutions with output voltage ranges from 0.7V to 6V and maximums of 25A output current. With their ability to maintain currents up to 25A in a very small form factor, the devices are suitable for applications in automotive, industrial, and communications markets.

The ISL91127IIAZ-T DC DC Switching Regulators work by converting a DC input voltage to a lower output voltage with a higher current than the input voltage. The regulator controls the power conversion process through its own internal circuitry that uses the feedback voltage from a shunt resistor placed across the load and an external impedance to regulate the output current. The regulator then adjusts the input voltage using its own PWM control to maintain the proper output voltage.

The ISL91127IIAZ-T devices features adaptive slew rate control, enabling fast transient response and low output voltage ripple, even at high loads. It also features hysteretic operation that provides a stable output voltage with minimal load regulation. In addition, the devices have a control cycle management feature for lower current operation and a programmable synchronous rectifier drive for increased efficiency when operating at high switching frequencies.

Furthermore, the dual-mode overcurrent protection of the ISL91127IIAZ-T DC DC Switching Regulators ensures reliability. It is programmable to either foldback or latch-off modes, allowing for maximum flexibility in system design. Integration of overvoltage, undervoltage, and overtemperature protection for both DC and AC power provides an additional safeguard.

The ISL91127IIAZ-T DC DC Switching Regulators offer unparalleled reliability, performance and flexibility, making them an ideal solution for high current applications. With their high power density and advanced features, they are well suited for the harsh environmental conditions encountered in automotive, industrial, and communications systems.