IP2002PBF

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IP2002PBF is a series of voltage regulators manufactured by Monolithic Power Systems Inc. that provide adjustable current and voltage regulation. Operated in either buck or boost mode, the IC has been designed for applications, from +1.8 to +80 V. The device can operate up to 5A for a single output or up to 2.4A for two outputs, and packs an integrated transistor, a low noise reference voltage, circuit protection functions, and a built-in MOSFET for switching. As such, IP2002PBF is suitable for a wide range of power conditioning applications, such as telecom, computing and networking, general purpose, automotive and industrial applications. IP2002PBF allows power supply designers to select from a range of input voltage sources and provide regulated output with minimal system complexity.

The IP2002PBF switching regulator works with a range of input and output voltage combinations to achieve high efficiency reported to be above 93%. Its input voltage range is between 5 and 40V and its output voltage is adjustable from 0.6 to 40V. It offers integrated circuit protection functions and a built-in MOSFET switch, which guarantees a high switching speed, smooth transfer ratio and minimal system power losses. The series also provides the user with several advantages such as the peak current mode control, integrated power MOSFET, protection against current foldback, output voltage programming with voltage feed-forward, maximum gate drive current limit and adjustable switching frequency.

The IP2002PBF is powered by a Monolithic Power Systems (MPS) CMOS process and include a control circuit, power switches, filter elements and other components. The control circuit, which is operated by the voltage-mode control, integrates a low noise reference voltage, current and feedback control, oscillator, and some protection functions. The low noise reference voltage generation and error amplifier circuit is composed of a linear amplifier and a 5V voltage reference. This voltage is normally used to control the power supply output voltage. The integrated MOSFET switch is controlled by the voltage-mode control and, once enabled, will provide the required power to the output and turn off the MOSFET when the voltage level decreases and reaches a certain threshold.

IP2002PBF includes several protection functions to ensure reliability and safety. It provides over voltage protection, under voltage protection, over-temperature protection, reverse current protection, over-current protection, and input overvoltage protection. In addition to these, it has a frequency-jittering function to reduce EMI, a voltage-feed forward function to reduce load-transient response, a maximum gate-drive-current limiting function for over-current protection, and current-foldback function for over-temperature protection. The IP2002PBF also has an output voltage monitoring pin, used to verify the external part of the output voltage divider, as well as a switching current monitor pin to measure the current passing through the MOSFET.

To conclude, IP2002PBF is a series of voltage regulators from Monolithic Power Systems Inc., specifically designed for DC-DC switching regulators applications. It is suited for a wide range of applications, from +1.8 to +80V and offers up to 5A of current (single output) or up to 2.4A (two outputs). Besides, it includes a reliable, low noise reference voltage circuit, integrated protection functions, and a built-in MOSFET switch to achieve high-efficiency performance.

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