FSL137MRIN

The power management integrated circuit (PMIC) is a specialized integrated circuit (IC) that is used to manage and regulate power across different nodes in a system. PMICs are increasingly becoming essential in various electronics equipment, act as a bridge between the supply chain, load and peripherals in an electrical system. The FSL137MRIN is a PMIC which belongs to the category of AC-DC converters and offline switchers, and is increasingly being used in a variety of automotive and industrial applications.

The FSL137MRIN PMIC is an integrated offline converter that consists of a 3-phase synchronous rectifier, a full-bridge DC/DC converter, a single stage flyback regulator, and a hysteretic start-up regulator. This PMIC comes with dual sample-and-hold sources, allowing the signals from the three-phase synchronous rectifier to be received and processed with minimal noise interference. The PMIC also features a temperature protection circuit, over-current protection with pre-bias start-up, and a digital output (logic-level) flag for monitor purposes.

The FSL137MRIN PMIC is primarily used in automotive motor control applications. It provides power to a three-phase motor by receiving its input from a three-phase power source. The PMIC then converts it into the required DC supply and supplies it to the motor. This PMIC also finds extensive applications in industrial motor drives, servo motors, and similar applications. It has a high switching frequency of 500 kHz and high efficiency of up to 95%.

The working principle of the FSL137MRIN PMIC is relatively simple. It starts with a three-phase rectifier, which receives its input from three-phase power supply and rectifies the received power into DC. The full-bridge DC/DC converter then runs this DC power and converts it into the required output voltage. The single stage flyback regulator smoothens out the DC power, resulting in a constant voltage output. The hysteretic start-up regulator then runs in the background and monitors the output voltage for abnormal fluctuations.

In conclusion, the FSL137MRIN PMIC is a reliable and efficient AC-DC converter and offline switcher which finds extensive applications in automotive and industrial motors. It consists of a three-phase rectifer, a full-bridge DC/DC converter, a single-stage flyback regulator, and a hysteretic start-up regulator. It is capable of delivering a high switching frequency of 500 kHz and has an efficiency of up to 95%. Thus, the FSL137MRIN PMIC can be used in a variety of motor control and similar applications.