MIC94063YML TR

The MIC94063YML TR is a power distribution switch and load driver from Micrel. It is primarily used to provide high current and high voltage power distribution and load switching in off-line, high voltage systems. It features an adjustable output current limit, allowing for optimum performance in a variety of systems. The device is packaged in a zero-ohm, 12-pin DFN package.

Features:

• Input supply range of -44V to +100V
• Integrated P-channel MOSFETs with RDS(on) of 19mΩ max.
• Output voltage range of -44V to +100V
• Adjustable current limit up to 5A
• Low quiescent current: 2mA Typical
• Thermal shutdown protection and short battery protection
• Operating temperature range of -40°C to +125°C

Application Field

The MIC94063YML TR is ideally suited for applications in off-line, high voltage systems such as UPS, server systems, motor drives, and industrial automation controls. The device can provide a high level of efficiency by limiting the output current and allowing the output voltage to adjust between the specified range. In addition, it can be used to provide power disribution for multiple downstream devices.

Working Principle

The MIC94063YML TR power distribution switch and load driver has two main components that provide its functionality. The first component is the gate driver, which is a low voltage, low dropout regulator that drives the gate of the integrated MOSFETs. This component allows the device to operate with a low quiescent current. The second component is an over-current sense circuit that is connected between the source and the gate of the MOSFETs. This circuit actively monitors the output current and can limit the output current to a predetermined level in the event of an over-current condition.

In addition to the gate driver and over-current sense circuit, the MIC94063YML TR also contains a number of protection features. These features include thermal shutdown protection, short battery protection, and a polarity reverse protection circuit. The thermal shutdown circuit is designed to shut down the device in the event that the die temperature rises above a predetermined threshold in order to prevent potentially damaging overheating. The polarity reverse protection is designed to protect the device from improper power supply connections.

Overall, the MIC94063YML TR is an ideal solution for high voltage and current power distribution and load switching applications. It is capable of providing adjustable current-limited outputs, protecting the device and downstream system components from damage due to over-current conditions, and protecting the device from incorrect power supply connections.