IFX91041EJVXUMA1 Integrated Circuits (ICs)

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IFX91041EJVXUMA1 is a monolithic integrated DC-DC step-down power switch from Infineon\'s Bold Family of regulators and is specifically designed for high power applications with up to 8A load. This switch combines high efficiency and low power loss with low ripple, low component count and excellent thermal performance. As part of the Bold Family of power components, it offers excellent protection and power management functions, such as Under Voltage Lock-out (UVLO), Over-Current and thermal protection, as well as brown-in/brown-out (BIBO) operation.

The IFX91041EJVXUMA1 is an ideal choice for Industrial, Automotive and Telecom applications. It can convert a wide input voltage (from 6V up to 28V) into an adjustable output voltage (0.9V to 18V) at up to 8A of load current. It also switches at a wide frequency range of 100 kHz up to 3MHz and comes in a 16-pin SSO-Power Mini-SO (SMD) package size.

Application Field:

The IFX91041EJVXUMA1 is designed for high power applications and features Infineon\'s MOSFET technology, which makes this device suitable for all kinds of applications, both linear, step-down or buck-boost converters.

Industrial applications: The IFX91041EJVXUMA1 is suitable for a wide range of industrial applications, such as:

• Switch-mode drives
• Utilities (e.g. solar inverters)
• Multi-rail power systems
• UPS systems
• Load sharing systems
• DC-DC converters

Automotive applications: The IFX91041EJVXUMA1 is an ideal choice for high-voltage applications in the automotive industry. It is suitable for use as a load distributor, a load switch, and an input changeover switch for automotive body controllers.

Telecommunication applications: This switch is designed to handle communication applications requiring high efficiency, low noise and fast switching times. It is suitable for high power base stations, wireless backhaul, or server/storage applications.

Working Principle:

The IFX91041EJVXUMA1 is based on Infineon\'s MOSFET technology and features a voltage mode control scheme. It is also equipped with an integrated low-loss driver and boosted gate voltage, both of which allow the device to switch at frequencies up to 3MHz.

When the power switch is in the on-state, the input voltage is applied to the power switch gate through an integrated gate driving power transistor. This drives the gate above the source voltage, allowing current to flow between the drain and source terminals. When the power switch is in the off-state, the integrated gate driving power transistor disconnects the power switch from the input voltage, allowing the power switch to open.

The integrated PWM controller regulates the output voltage to the desired value by using an internal feedback loop. The reference voltage and constant switching frequency are generated internally and can be adjusted by programming external components.

The integrated thermal protection feature helps protect the device from over-temperature events. This feature monitors the junction temperature of the device, and if the temperature exceeds a certain threshold, the device will shut down, protecting the device from heat damage.

The IFX91041EJVXUMA1 also features an integrated over-current protection feature. This feature monitors the current through the device, and if the current exceeds a certain threshold, the power supply will shut down, protecting the device from further damage.

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