MAX1771EPA+

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The MAX1771EPA+ is a high-efficiency, high-bandwidth, peak current DC-DC switching controller suitable for use in off-line and multiple-output supplies, high-frequency converters, active OR-ing, LED drivers, and other applications. With its high-speed pulse-width modulation (PWM) frequency and its high-efficiency on/off switch-mode operation, the MAX1771EPA+ provides reliable power conversion and control.

The MAX1771EPA+ is a 5V to 30V Operating Voltage, 1.5A-15A Peak Current Switching Controller designed to be able to meet a wide range of applications. It is an active OR-ing and/or active OR-ing, with a selectable PWM (pulse width modulation) frequency of up to 1MHz and a 22V/microsecond-ishslew rate for fast current overshoot protection. It has a selection of features that allow for flexibility and customizable operation, such as: 3-Phase Full Bridge Operation, Multiphase Operation, and Low Voltage Cut-Off protection.

The MAX1771EPA+ includes a variety of features for improved performance. The On-chip Oscillator helps provide a fixed switching frequency that reduces the need for external components. The Programmable Frequency Selection feature allows the user to select an internal oscillator frequency based on the application. The High-Precision Duty Cycle (DCC) feature helps to reduce the system-level current differences encountered in multiple output applications.

The MAX1771EPA+ also offers a range of current protection features. It includes an integrated over-current protection device that turns off a single over-current switch if the load current exceeds a predetermined limit. This is helpful in active OR-ing applications, where it helps to reduce the likelihood of a device failure. In addition, an under-voltage lockout feature is integrated to protect the system from low voltage conditions.

The MAX1771EPA+ also features built-in protection from ground faults, which prevents a single fault from damaging the entire system. This is beneficial to OR-ing applications, which are likely to have multiple ground sources. The MAX1771EPA+ enables fault current to be rapidly shut off while other sources of current remain unaffected.

In addition, the MAX1771EPA+ has an integrated start-up circuit that is designed to help reduce the time it takes to start up the system. The built-in soft-start circuit helps to reduce inrush current and minimize external stress on components during startup. The built-in error amplifier helps to ensure that the output voltage remains well controlled and close to the target voltage during operation.

The MAX1771EPA+ is a reliable and efficient switching controller that can handle high-frequency, high-power applications with ease. Its feature set makes it suitable for use in a wide range of off-line and multiple-output supplies, high-frequency converters, active OR-ing, LED drivers, and other applications. It offers features such as an integrated over-current protection device, under-voltage lockout, efficient start-up circuity, and programmable frequency selection, which helps to make this device a dependable and flexible choice for those needing a reliable power conversion and control solution.

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