MIC2310-1ZTS

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Introduction

MIC2310-1ZTS is a PMIC – Hot Swap Controllers manufactured by ON Semiconductor. It is an integrated circuit with an array of built-in power control, sequencing and protection functions which enable the safe insertion and removal of hot swap power sources from the system. The MIC2310-1ZTS is designed to support a wide range of applications including servers and storage, networking, automotive, industrial, embedded system and home products. This product also offers additional features such as input reverse-polarity protection, adjustable control and delay times, power and control pin short-circuit protection, adjustable start-up delay, and adjustable current limit.

Application

The MIC2310-1ZTS Hot Swap Controller is designed to provide a simple and efficient solution for safe and reliable insertion and removal of hot-swappable power sources in systems. The MIC2310-1ZTS also allows for the integration of power sources in systems without the risk of damaging internal components. The following applications take advantage of this product’s hot-swapping capabilities.

• Servers and storage systems
• Networking and telecommunications
• Industrial and automotive
• Embedded systems
• Home applications

Working Principle

When the MIC2310-1ZTS device is inserted into the system, two main functions are triggered. First, a start-up delay is activated to allow the power source to begin stabilizing before any loads are applied. Secondly, the hot swap control circuit itself begins a sequence to bring the device up to the correct voltage and current level. This process is controlled by three different stages of operation.

Phase 1: Soft Start

During this stage the voltage on the hot swap control pin is monitored by a comparator integrated in the MIC2310-1ZTS. As soon as the voltage reaches the upper voltage limit (set by the user), the load is enabled and regulated with a transistor. The voltage across the load is gradually increased to the set point.

Phase 2: Constant Voltage

During this stage, the allowable output voltage is monitored by an additional comparator. If the voltage exceeds or drops below the programmed hysteresis values, the device automatically adjusts the voltage to a constant value.

Phase 3: Constant Current

Finally, the device will regulate the current supplied by the power source. This is done by monitoring the average current drawn by the load. If the current exceeds the programmed limit, the transistor is switched off to avoid overloading the power supply.

Additional Features

In addition to the three phases of hot-swap control, the MIC2310-1ZTS also provides several other features. These include:

• Input reverse-polarity protection
• Adjustable start-up delay and current limit
• Short-circuit protection
• Soft shutdown capability
• Remote sensing of output voltage

Conclusion

The MIC2310-1ZTS Hot Swap Controller is a robust, integrated circuit designed to support a wide range of hot-swap applications. It uses a three stage control system to safely and reliably provide power to the system during insertion and removal of the power source. Additionally, it is equipped with several other features such as adjustable start-up delay and current limit to ensure safe and reliable operation. All these features make the MIC2310-1ZTS an ideal Hot Swap Controller for a variety of applications.

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