MAX17602ATA+T

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The MAX17602ATA+T is a low-temperature operating device from Maxim Integrated, specifically designed to provide actuation and termination for hot swap applications that are typically used in power supplies, ATE systems, and communications equipment. The MAX17602ATA+T combines an advanced high-current DMOS FET driver with an internal control circuit, allowing all the required functions such as overcurrent detection, fault protection, and temperature protection to be fulfilled in a single, low-cost device.

This device is used in a wide range of Power Management (PMIC) applications, such as gate drivers for hot swap power supplies, motor control, and voltage regulators.

Working Principle

The MAX17602ATA+T contains an internal control circuit, which is responsible for the main operation. The main purpose of this circuit is to provide the necessary gate drive voltage for the high-current DMOS FET gate driver. This gate drive voltage is generated by a charge-pump operating in pulse-width modulation (PWM) mode. The PWM period and duty ratio of the gate drive voltage is adapted to the overcurrent and temperature conditions of the system in order to maintain a safe operation and protect the load.

In order to achieve proper and safe operation, the MAX17602ATA+T has two pins dedicated to overcurrent and temperature sensors. These sensors monitor the current and the temperature of the load, and give a signal to the control circuit accordingly. This signal will cause the control circuit to adjust the gate drive voltage by changing the PWM duty cycle of the charge-pump circuit.

The MAX17602ATA+T also has two fault flags, one for an overcurrent condition and one for a temperature condition. In case of any of these events, the corresponding flag will be raised and the device will be disabled in order to shut down the power supply. Additionally, this fault flag can also be used for diagnostic purposes.

The MAX17602ATA+T is an excellent choice for hot swap power supply applications due to its ability to protect the load from dangerous current and temperature over-loops. This device is also excellent for motor control, since it provides a precise and precise gate drive voltage as well as precise current and temperature sensing capabilities.

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