ISL83485IP

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The ISL83485IP is an integrated power module designed to provide efficient and reliable power supply designs with minimum component count. This module integrates a low-resistance power switch, LLC resonant converter, and low-dropout linear regulator. It is an ideal choice for various power applications including telecom, networking, and industrial control.

Application Field

The ISL83485IP is widely used in applications requiring a low-cost, reliable and efficient power supply, such as telecom, industrial control, and motor control applications. The module integrates a high-efficiency, LLC resonant converter along with a low-dropout linear regulator, allowing for precise control of output and comprehensive protection features.

The module also includes an integrated power switch and MOSFET, allowing for efficient operation and improved thermal performance over traditional discrete designs. The ISL83485IP is capable of operating over a wide input voltage range, providing flexible power supply designs.

Working Principle

The ISL83485IP operates on a buck-boost topology, with an integrated LLC resonant converter, power switch, and low-dropout linear regulator. The power stage consists of a high-side power MOSFET, a low-side power MOSFET, and a synchronous driver connected to a transformer.

The LLC resonant converter works to supply a precisely regulated output voltage by keeping the power MOSFETs in resonance. The switching frequency is approximately 130 kHz and the system is self-protected against peak and short circuit conditions.

The low-dropout linear regulator operates in parallel with the LLC resonant converter and is used to supply very low current requirements and to maintain a smooth output voltage. The linear regulator is able to provide a dropout voltage as low as 0.3 V and supports output currents up to 10 mA.

The ISL83485IP also includes integrated protection features including overvoltage and short circuit protection. The module is able to protect itself, the power components, and the load in the event of an overvoltage or short circuit condition.

In summary, the ISL83485IP integrated power module is a low-cost, reliable, and efficient choice for various power applications. It integrates a high-efficiency LLC resonant converter and a low-dropout linear regulator, and also provides various protection features for superior system performance.

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