TSM108ID

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The TSM108ID is a chip commonly used for controlling DC-DC power supplies in many applications. It is a voltage regulator specifically for DC-DC switching controllers, and is designed with a built-in pulse-width modulation control block. The chip offers enhanced protection with its built-in self-protection functions and fault recovery features. This article is aimed at discussing the key features of the TSM108ID, application fields and its working principle.

Key Features

The TSM108ID offers a wide input voltage range of 4.5V to 30V and can provide output voltage of up to 28V. It supports a wide range of switching frequencies from 100KHz to 1.2MHz for applications that require faster transient response. The high efficiency of the TSM108ID, up to 95%, means it is well suited for low-power applications where energy saving is essential. The operating temperature range of the chip is from - 40°C to +85°C and its adjustable start current helps in smooth start up of the power devices. Other key features include:

• Built-in boot strap FET for higher efficiency
• Programmable soft-start and soft-stop
• Programmable switching frequency
• Over voltage, under voltage, and thermal protection
• 3-state PWM controller

Application fields

The TSM108ID can be used in almost any application where a DC-DC switching power supply is required. It is commonly used in applications such as distributed power systems, office automation, LCD monitors, and automotive applications. The chip can also be used to power microprocessors and power amplifiers, as well as battery operated portable devices. Due to its wide operating temperature range and high efficiency, the TSM108ID is also suitable for use in industrial and communication applications.

Working principles

The TSM108ID integrates a high-speed control loop that uses Pulse-Width Modulation (PWM) control for regulating output voltage. This type of control loop is generally used in DC-DC switching controllers. The control loop consists of an error amplifier, an internal feedback comparator and an external voltage reference. The PWM signal generated by the error amplifier is then sent to the power stage, which produces a pulse-width modulation signal to switch the power devices on and off. The amplitude of this signal is proportional to the output voltage of the TSM108ID, which is then monitored and regulated by the feedback loop.

In summary, the TSM108ID is an excellent chip for DC-DC switching controllers. It offers a wide input voltage range, high efficiency and an adjustable start current, making it suitable for a variety of applications. Its built-in protection features make it a reliable and secure solution for powering devices in harsh conditions. Its working principle is based on PWM control, which is a very simple and efficient way to regulate voltage from DC-DC switching controllers.

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