VND5E025MKTR-E Integrated Circuits (ICs)

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Power management integrated circuits (PMIC) have multiple roles in electrical devices and systems, one of which is the distribution of power throughout a system. The VND5E025MKTR-E is a power distribution switch, load drivers, and sensor device designed to provide a flexible power source switch or power source current pulse control, as well as driving various types of external loads.

Background

VND5E025MKTR-E was developed as part of the Renesas portfolio of power Management integrated circuits (PMICs) to support its range of microcontrollers and microprocessors. It packs a lot of features, including two-phase switching mode power converter that supports step-down output voltage from 4.5V to 0.6V and two-phase current boost DC/DC with output current of up to 200mA each, into a single-channel structure.

Features

• Two Phase-Switching mode converter in a single channel configuration
• Input voltage range up to 19V
• Output voltage range from 0.6V to 4.5V
• Two-phase boost setup with up to 200mA output current each
• Programmable modes to reduce EMI emissions
• Wide range of applications, including power distribution switching, load driver, and sensor device

Application Field

VND5E025MKTR-E is a perfect fit for a variety of consumer markets, such as handhelds, wearables, audio systems and consumer electronics. It is also applicable for industrial automation, medical systems and consumer appliances. Its features and specifications make it ideal to drive displays, LCD backlights, audio signal paths, pressure and temperature sensors, imaging components, and other similar signal-sensitive and logic loads.

Working Principle

The VND5E025MKTR-E is a two-phase, full-bridge switching, power distribution switch and load drivers device. It is designed with a modular MOSFET structure, where two MOSFETs comprise each of the two phases or channels. The two MOSFETs are controlled by a pair of control pins, which are merged in series to establish a full bridge configuration.

The device also features a second controller module to provide current-mode control to the two MOSFETs, as well as two synchronous rectifier switches configured to maximize efficiency in the two-phase circuit. The two controllers are capable of switching up to 1 MHz each, and can be programmed according to application by setting the output MOSFET ON resistance and switching frequency.

The VND5E025MKTR-E also incorporates an adjustable hysteresis voltage to optimize performance under various applications and operating conditions. The hysteresis voltage can be programmed using a programmable resistor or internal registers. In addition, the device has several advanced features such as thermal protection, overvoltage protection and overcurrent protection, which help protect the device against any over-stress conditions.

Conclusion

The VND5E025MKTR-E is a two-phase power distribution switch, load drivers, and sensor device. It can be used in a variety of applications, like driving displays, audio signal paths, pressure and temperature sensors, and more. The device features advanced features and user programming that makes it ideal for any application.

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