ISL6307IRZ-T

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The ISL6307IRZ-T is a high power DC/DC switching controller, designed to provide high efficiency in applications requiring intermediate bus voltage conversion and adjustments. It is a highly integrated product which simplifies power supply design. The device comprises of an internal 600mV reference which enables applications to accurately regulate the output voltage.

The ISL6307IRZ-T operates from a voltage range of 4.5V to 16V with a wide output voltage range of 0.8V − 37V. It features a maximum peak output current capability of 40A, allowing it to support a wide range of external power MOSFETs. The ISL6307IRZ-T also features integrated ORing SuperMAST© MOSFETs, allowing it to support up to four paralleled power MOSFETs at an input voltage of 16V.

In addition, the internal high side power MOSFET is pre-biased at the start-up to reduce the output in-rush current. Other on-chip features of the ISL6307IRZ-T include short-circuit protection, thermal shutdown protection, and over-voltage protection. The combination of these features with the device\'s efficient digital control loop allows for high power density designs.

Working principle:

The ISL6307IRZ-T operates by using pulse-width modulation (PWM) to provide a high efficient intermediate bus voltage conversion and adjustments. The device generates a regulated DC output by switching on and off the internal NMOS transistor, operating in a frequency range of 400kHz to 1MHz and with an adjustable duty cycle ranging from 1.89% to 99.7%.

At start up, the internal pre-biased switches provide the current to the internal voltage reference. The voltage reference provides a stable output voltage, and is monitored by the internal comparator. The output voltage is adjusted by a feedback loop that modulates the duty cycle of the internal NMOS switch, allowing the output to be regulated at the desired voltage.

Application field

The ISL6307IRZ-T is a high power DC/DC switching controller, designed to provide high efficiency in applications requiring intermediate bus voltage conversion and adjustments. This device is ideal for voltage regulators, USB-PD, automotive infotainment and powertrain systems, power data computing, and battery management systems. Additionally, the device can be used in applications where space is a concern and ultra-low power consumption is required, such as IoT and wearables.

In summary, the ISL6307IRZ-T is a highly integrated DC/DC switching controller with an advanced PMOS control architecture. Its wide input and output voltage range combined with superior transient response make it suitable for a variety of intermediate bus voltage conversion and adjustment applications. The combination of features found in the ISL6307IRZ-T make it a powerful and efficient solution for compact, power-sensitive designs.

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