SP6127EK1-L

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Introduction

SP6127EK1-L is a monolithic regulator that can be used to implement various functions in power supplies and other power related applications. It combines high integration with very low quiescent current, which enables it to provide excellent noise performance and system-on-chip (SoC) integration. It is pin-and-function compatible with most of the SMPS controllers available in the market, with the added benefit of having an extended temperature range and operating frequency range up to 1MHz.

Application Field

The SP6127EK1-L is a DC-DC Buck Converter Controller with Fixed Frequency PWM featuring a constant-on-time (CTR) control method. It is specifically designed for low power portable applications such as mobile phones, digital cameras, PDA\'s, and other battery powered devices. It is also suitable for Step Down, Micro DC-DC and Step Up applications. It provides the most efficient solution for all applications requiring fast transient response and low noise. It is ideal for all applications that require lightweight and small size, like notebook computer and other slim-size system designs.

Working Principle

The SP6127EK1-L is based on the Constant On-Time (CTR) topology. This topology is based on the pulse-width modulation (PWM) technique, where the switching frequency is fixed and the duty cycle is regulated for proper output voltage regulation. The SP6127EK1-L is designed to have an adjustable switching frequency, allowing an optimal balance between performance, noise generation, and size. The preferred frequency range is from 100kHz to 1MHz. It also features short circuit protection, line regulation, over-voltage protection, and over-temperature protection.

Features and Benefits

• High Operating Frequency : The SP6127EK1-L can operate up to 1MHz.
• High Efficiency : Thanks to its CTR control method, it ensures high efficiency and fast transient response.
• On-Time Control : The controller will set the duty cycle in order to keep the on-time of the switching cycle constant, ensuring excellent performance under varying load conditions.
• Integrated FETs : The controller integrates two mosfets, making it easier to integrate it into a system.
• Low Quiescent Current : The controller consumes very low quiescent current, allowing it to achieve a high efficiency at light loads.
• Wide Temperature Range : It is rated from -40°C to +125°C.

Conclusion

The SP6127EK1-L is a DC-DC Buck Converter Controller featuring constant-on-time (CTR) control for low power portable applications. It is pin-and-function compatible with most of the SMPS controllers available in the market and has an extended temperature range and operating frequency range up to 1MHz. Its high integration capability and very low quiescent current offers excellent noise performance and system-on-chip (SoC) integration at a competitive cost. This makes it ideal for all applications that require lightweight and small size, like notebook computer and other slim-size system designs.

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