MAX17498BATE+

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The MAX17498BATE+ is a highly integrated power management integrated circuit (PMIC) that provides high efficiency power flow for AC and DC converters, offline switchers and other applications. It features an efficient conversion of input energy into a regulated output voltage and current. The MAX17498BATE+ integrates two high-efficiency synchronous buck regulators with flexible output voltage adjustment. With its built-in current protection and current-sense resistors, the MAX17498BATE+ ensures safe and reliable operation.

The MAX17498BATE+ provides power conversion efficiency up to 97%, improving system efficiency and helping to reduce system power loss. The PMIC also offers both load-independent current limiting and thermal protection that can be used together to protect against short circuits and over-temperature operations. The MAX17498BATE+ can be considered for offline switching mode power supply (SMPS) for AC/DC power sources, including AC/DC wall adapter, USB adaptor and general purpose power supply with adjustable output voltage. The device also provides a wide input voltage range from 3.2V to 14V, which makes it suitable for applications in a broad range of markets such as industrial, consumer and telecom.

The MAX17498BATE+ is based on a PWM-controlled buck converter. The buck converter is a type of switched-mode power supply (SMPS) that steps down the input voltage to a lower voltage that is better suited for the load. In a buck converter, the input voltage is supplied to a power transistor, which is switched at a specific frequency by a control circuit. When the transistor is on, the input voltage is applied to the inductor and charge is stored in the inductor. When the transistor is off, the stored charge from the inductor is then output to the load, producing the output voltage. The PWM control circuit adjusts the ratio of on-time to off-time of the power transistor to control the output voltage.

The MAX17498BATE+ also features an accurate and adjustable load current limit, allowing tighter control over the total power that is being used. The high efficiency and accurate current regulation protects the downstream circuitry from excessive over-current and helps reduce system thermal stress. The high efficiency of the device is further enhanced by its sleep mode, which shuts down the power MOSFETs when Duty cycles become less than 3%.

The MAX17498BATE+ features two channels of 1MHz synchronous buck converters with adjustable output voltages, enabling the device to provide up to 30W of power. The device also offers pre-charged output and synchronous reverse current flow from the output side. This feature helps ensure the power supply will remain stable during start-up even if the output is pre-charged.

The MAX17498BATE+ is a highly integrated PMIC for AC/DC converters, offline switchers, and other applications. It is an efficient power management and conversion device, providing high efficiency, accurate current regulation, and flexible output voltage control. With its built-in protection and current-sense resistors, the MAX17498BATE+ ensures safe and reliable operation. Its wide input voltage range and high efficiency make it ideally suited for use in a wide range of applications.

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