MIC2070-1BQS

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The MIC2070-1BQS is a high-frequency voltage-mode PWM controller with support for synchronous Rectified Boost (SRB) used for driving external N-channel MOSFETs. With boosted output efficiency, it is suitable for multiple power conversion applications, from 10 Watt to 1 kilowatt.

High-frequency operation means stronger EMI suppression and considerably lower ripple voltage on the output. This makes the MIC2070-1BQS an ideal choice for many high-voltage power conversion applications. The internal synchronous rectifier boost architecture allows the MIC2070-1BQS to further improve the efficiency of existing designs. The MIC2070-1BQS comes with both constant off-time and constant on-time control modes.

The MIC2070-1BQS is an integrated power conversion solution which combines the PWM controller, the synchronous rectifier boost, and the high-side MOSFET driver with short-circuit protection features. It is designed to minimize external component count. The MIC2070-1BQS can be used for output voltage up to 100V, with up to 95% efficiency.

The MIC2070-1BQS has built-in under-voltage lockout (UVLO) and over-current protection (OCP) features, as well as a low-side MOSFET driver for paralleling with other power converters. It also provides a soft-start feature for easy, glitch-free system start-up. The MIC2070-1BQS can be set up to provide either buck or boost output, or even SEPIC outputs.

The key feature of the MIC2070-1BQS is that it supports high-frequency operation, allowing stronger EMI radiation suppression and smaller filter sizes to reduce component costs. To adjust the output voltage, the controller utilises an external resistor divider to set the feedback voltage. Internal loop compensation ensures an adequate transient response of the PWM control loop. The MIC2070-1BQS is a reliable and robust solution for high-voltage power conversion.

The MIC2070-1BQS is an ideal choice for power converters requiring high efficiency, and provides a cost-effective solution for applications in the 10 Watt to 1 kilowatt range. It features a wide input voltage range, and is suitable for automotive, industrial, and consumer applications. The MIC2070-1BQS is a reliable, robust, and high-frequency power conversion solution which provides versatile features to simplify design and reduce component costs.

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