MAX8550ETI+T

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PMIC - Voltage Regulators - Special Purpose

MAX8550ETI+T is a high-performance DC-DC controller from Maxim Integrated. It is integrated with high-efficiency synchronous rectifiers, allowing for accurate control and monitoring of the voltage levels for a wide range of applications. The device provides up to 8V output, adjustable via an external reference voltage and a programmable output voltage range. It also features a wide input voltage range, and is designed to operate within over-voltage, under-voltage, and over-temperature conditions. The device is protected against reverse current, over-current and short-circuit conditions, as well as current flow to GND.

The MAX8550ETI+T device features a selectable burst/pulse-skipping mode and dual-mode PWM/PFM operation. Additionally, the device provides a number of adjustable features, including soft-start and over-current limit, making it ideal for use in applications where the output voltage is required to remain within a range. The device also supports power-good signal and enables detecting input under-voltage and over-voltage conditions.

The MAX8550ETI+T can be applied in a variety of applications, such as automotive systems, industrial systems, robotics, and low-power embedded applications. It is ideal for systems requiring efficient and robust power conversion solutions, as the device delivers high-efficiency up to 95%.

The following sections cover the working principle, application field, and features of the MAX8550ETI+T device.

Working Principle:

The MAX8550ETI+T device utilizes a synchronous rectifying system, which involves the use of two MOSFETs, a low-side and a high-side, connected in series. The device is powered from a DC voltage source and the MOSFETs are used to control the current flow. The controller monitors the input voltage and the output voltage of the system, and adjusts their level accordingly to maintain the desired output voltage. The high-side MOSFET is responsible for the positive or forward current flow, while the low-side MOSFET is responsible for the negative or reverse current flow.

The device utilizes pulse-skipping operation and is designed to switch between the two modes automatically, depending on the input and output conditions. In the pulse-skipping operation mode, the output voltage is gradually increased or decreased to reduce the inrush current, while in the burst mode the duty cycle of the two MOSFETs is adjusted to maintain the output voltage.

The device also has a programmable over-current protection feature, which limits the output current in the event of an overload condition, helping to protect the system.

Application Field:

The MAX8550ETI+T is ideal for a wide range of applications, including automotive systems, industrial systems, robotics, and embedded applications. The device is well suited for systems requiring constant output voltage, such as in applications which require low noise and high efficiency. The device is also capable of providing fast transient response and the power-good signal enables it to detect any changes in the system\'s input voltage.

In automotive systems, the device can be used to control the voltage levels of powertrain components, as well as provide compliant voltage levels for a wide variety of internal and external sensors. In industrial systems, the device can be used to control the voltage levels of industrial equipment, making it suitable for a variety of applications. In robotics, the MAX8550ETI+T can be used to control the voltage levels of servo motors and actuators, while in embedded applications the device can be used to power a range of low-power and high-power components.

Features:

The MAX8550ETI+T provides a number of features, which make it ideal for a wide range of applications. These features include:

• Wide input voltage range of 5.5V–24V, making it suitable for a wide range of applications
• Adjustable output voltage range of 0.8V–8V, allowing for precise control of the output voltage
• Integrated high-efficiency, synchronous rectifiers, allowing for high-efficiency operation. Up to 95% efficiency.
• Programmable over-current protection, allowing the system to be protected against overload conditions.
• Dual-mode PWM/PFM operation, providing low noise and improved efficiency.
• Selectable burst/pulse-skipping mode, providing a range of different operating modes to suit the needs of the application.
• Power-good signal, allowing the system to detect changes in the input voltage.

The MAX8550ETI+T is a high-performance, high-efficiency DC-DC controller that is ideal for use in a wide range of applications where precise voltage control and performance is required.

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