ISL6236IRZAR5281

ISL6236IRZAR5281 Application Field and Working Principle

The ISL6236IRZAR5281 is a high-efficiency DC/DC power converter, capable of synchronous buck control, developed by Intersil as an advanced PMIC - Voltage Regulators - Special Purpose. This device is specifically designed for automotive powertrain and other power-sensitive applications that demand high efficiency and improved EMI (Electro-Magnetic Interference) performance.

In terms of application field, the ISL6236IRZAR5281 is perfectly suited for 12V and 5V automotive bus power applications in the powertrain. It operates over a wide input voltage range from 8V to 40V and provides a wide output voltage range from 1.0V to 12V. Its low quiescent current, fast transient response and excellent line/load transient response make it suitable for automotive power systems. Additionally, its high power stage EMI is ideal for the demanding requirements often found in automotive powertrain applications.

The working principle of the ISL6236IRZAR5281 is based on synchronous buck controller architecture. The device features two independent switching channels, each with a dedicated level shifter. The two channels can provide single or dual outputs, depending on the application requirements. Each output features synchronous MOSFETs and runs in pulse width modulation (PWM) mode. The PWM signals are generated by the internal control circuit, which is triggered by the feedback signals on the output voltage. The PWM control signals are adjusted dynamically to maintain the output voltage within the desired range. The PWM frequency can be adjusted with the on-board frequency control pin. The device also includes high-frequency soft-start and has an on/off control pin in order to provide additional flexibility.

Overall, the ISL6236IRZAR5281 is a very capable voltage regulator for automotive and other power applications. It has excellent energy efficiency, fast transient response and low EMI. With its wide input and output voltage range, it is a perfect fit for demanding powertrain applications.