FLS6617MX

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The FLS6617MX is a feature-rich DC-DC power management integrated circuit (PMIC) designed for a variety of applications. As part of the family of PMICs created to meet the needs of designers in a range of industry sectors, this PMIC is best suited to applications requiring precision step-down DC-DC conversion and strong current drive capabilities. This article will outline the applications and operational principles of the FLS6617MX.

Applications: The FLS6617MX is a suitable PMIC solution for use in lower power consumer and industrial applications. It is ideal for applications requiring low current step-down DC-DC conversion such as motor control, printer control, optical drives, and telecom systems. In addition, it is suitable for applications requiring high current pulse width modulation (PWM) and/or voltage/frequency mode switching, such as LED lighting, radio frequency (RF) power amplifiers, and battery-powered applications. The FLS6617MX is also well-suited for use in microprocessor systems due to its programmable slope compensation which provides increased flexibility in responding to microprocessor-generated noise.

Working Principle: The FLS6617MX provides multi-phase buck regulation in a single package. It includes an internal high-speed switch mode regulator with a non-overlapping multi-phase architecture, providing accurate and efficient power conversion. Additionally, the FLS6617MX features an efficient synchronous rectification for superior efficiency in a small package size. The PMIC also features an integrated low side FET driver for PWM power sequencing as well as a voltage-over-current protection (VOCP) system for safe and reliable operation.

In a typical step-down DC-DC application, the input voltage is regulated to the required output voltage. The FLS6617MX uses a four-phase design to efficiently control the output voltage, with each phase operating at a different frequency. This allows for better load transient responses and improved performance overall. The FLS6617MX also provides programmable slope compensation, allowing the PMIC to respond more efficiently to microprocessor-generated noise. The PMIC provides excellent tight loop control and low output voltage ripple, which helps to minimize EMI.

The FLS6617MX also features a low on-state resistance power switch for improved efficiency, and a built-in overcurrent protection system for maximum safety. The OCP system monitors the current of the power switch and protects it from overload conditions. Additionally, the FLS6617MX includes a low side FET driver for PWM power sequencing. The driver includes adjustable deadtime and blanking time to ensure exact timing of power switches.

The FLS6617MX is a highly efficient, low-power DC-DC PMIC, ideally suited for a range of industrial and consumer applications. With its multiple operating modes, programmable slope compensation, and advanced switching power technology, the FLS6617MX provides high precision and reliability for applications requiring step-down DC-DC conversion and/or controlled PWM switching.

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