LTM8045IY#PBF

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DC–DC converters are used to convert the voltage from a higher DC voltage input to a lower DC voltage output. The LTM8045IY#PBF is one such converter. This converter uses a two-phase, interleaved, synchronous, buck-boost topology to provide a regulated output voltage. This converter also allows for a power factor correction (PFC) function to improve efficiency and power density.

The LTM8045IY#PBF can be used in a variety of applications such as battery charger, automotive, communication, data storage, LED and point-of-load applications. This converter has an input voltage range of 6V to 20V and an adjustable output voltage ranging from 0.8V to 15V with a maximum current of 7.5A. It also has a very small form factor making it suitable for space-constrained applications.

The operating principle of the LTM8045IY#PBF involves using an internal synchronous buck-boost PWM controller. This PWM is set to run at a fixed frequency and provides variable duty cycles on its outputs. These outputs are connected to the two PhaseSync gate drivers which in turn operate two N-channel power MOSFETs arranged in a synchronous buck-boost topology. The voltage at the load is then regulated by controlling the duty cycle of the PWM. The operating frequency can be adjusted for optimal performance or efficiency.

The LTM8045IY#PBF also includes PFC functionality to improve efficiency and power density. This is done by regulating the voltage at the input side of the converter. The PFC controller compensates for the current drawn at the source and safely transfers it to the output. This helps to reduce power loss and maximize efficiency.

The LTM8045IY#PBF has several integrated protection features for safe and reliable operation. It includes under-voltage lock-out, over-voltage protection, over-load protection and short-circuit protection. It also includes thermal monitoring that will shut down the converter in the event of high temperatures.

In conclusion, the LTM8045IY#PBF is a two-phase, interleaved synchronous, buck-boost dc–dc converter. This device is suitable for use in a variety of applications due to its adjustable output voltage range and its small form-factor. It also provides power factor correction capabilities to increase efficiency and power density. The integrated protection and monitoring features ensure safe and reliable operation.

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