TPS82085SILR Integrated Circuits (ICs)

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The TPS82085SILR is a DC DC Buck switch regulator specifically designed for space-limited applications. It is a versatile product and suitable for a variety of applications. This article will discuss its application field and working principle.

Application Field

The TPS82085SILR is generally used to provide a high-performance, efficient, and reliable power solution for embedded applications. It is capable of delivering up to 8 A of continuous output current from a 12 V input voltage. It provides smooth line and load regulation regardless of load, temperature, and input voltage variations. This makes it particularly suitable for applications such as applied systems, industrial automation and control, consumer electronics, and networking equipment.

The TPS82085SILR has an adjustable switching frequency, allowing system designers to optimize the thermal and electro-magnetic characteristics of the system. Its current mode control provides excellent line and load transient response, making it ideal for high-efficiency designs. Its output voltage can be adjusted to meet any specific application needs.

The TPS82085SILR is an excellent choice for applications where space is a concern because of its small 16 mm2 package size. Its ultra-compact size makes it suitable for handheld devices, embedded systems, and wearable electronics, which require less board space while preserving reliability.

The TPS82085SILR features programmable cycle-by-cycle current limit to ensure that the load current is never higher than the specified maximum. It also has overvoltage protection and temperature protection to ensure that the device does not overheat and remains within its operating parameters. This makes it suitable for high-temperature, high-load applications.

Working Principle

The TPS82085SILR uses Pulse-Width Modulation (PWM) to regulate the output voltage. It works by creating a square wave signal of variable duty cycle and varying pulse widths. This signal is sent to a switch which is connected to the load and the power source (Vin).

The duty cycle of the square wave signal is used to control the amount of power transferred to the load. In other words, the duty cycle determines how much time a switch is on, allowing energy to flow through it and dissipate into a load. When the duty cycle is low, the switch is closed most of the time, allowing very little power to pass through. As the duty cycle increases, more power is allowed to pass through. This results in a regulated output voltage as the load current varies.

The TPS82085SILR has a soft-start feature which enables it to start up quickly and quietly with reduced output voltage noise. This feature is made up of an internal charge-pump circuit which charges a capacitor and increases the output voltage slowly, ensuring smooth start-up.

The TPS82085SILR is able to regulate an output voltage ranging from 0.8V to 5.5V, depending on the Vin, the output current demand, and other conditions. It is also able to deliver up to 8A of continuous output current.

The TPS82085SILR is a versatile device suitable for embedded systems and high-current applications. Its adjustable switching frequency and programmable current limit make it an ideal solution for efficient and reliable power delivery.

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