ITZ0948S05 Power Supplies - Board Mount

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DC-DC converters are widely used in many modern, high-performance electronic systems. One of these converters, the ITZ0948S05, is an advanced, scalable DC/DC converter designed specifically for the automotive market. In this article, we will explore the application field and working principle of the ITZ0948S05.

Application Field of the ITZ0948S05

The ITZ0948S05 is a high switching frequency DC-DC converter with a wide input voltage range from 6V to 40V and an output voltage range of 0.8V to 30V. It is suitable for automotive, electric vehicle, and lithium-ion battery power supply applications, as well as other portable electronics.

The ITZ0948S05 is uniquely designed to offer high efficiency and maximum flexibility, as well as high-end features such as over-temperature protection, over-current protection, and under-voltage lockout. It has a wide output current range, from 0.5A to 5A, and is able to support both synchronous and asynchronous buck configurations. The converter also supports a wide range of operating modes, including continuous current mode (CCM), Discontinuous Current Mode (DCM), Pulse-Frequency Modulation (PFM), and Pulse-Width Modulation (PWM).

Working Principle of the ITZ0948S05

The DC-DC converters of the ITZ0948S05 series are based on a synchronous buck topology with an integrated power MOSFET. The converter works by using pulse-width modulation to control the power supplied to the output voltage. The ITZ0948S05 offers adjustable switching frequency, allowing the user to configure the optimal output voltage according to their application requirements.

The ITZ0948S05 can be used in both constant current mode (CCM) and discontinuous current mode (DCM), depending on operating conditions. In CCM, the device operates as a buck converter, and current to the output is kept constant across all input conditions. In DCM, the device operates as a buck-boost converter, and current to the output is allowed to drop to zero before rising again.

The device can also operate in Pulse Frequency Modulation (PFM) and Pulse Width Modulation (PWM) modes. In PFM, the frequency of the pulses varies according to the varying output voltage requirements, while in PWM, the width of the pulses is varied accordingly.The ITZ0948S05 has an internal control loop that monitors the output voltage and adjusts the width of the pulses accordingly.

Conclusion

The ITZ0948S05 is an advanced, highly efficient DC-DC converter designed for automotive, electric vehicle, and lithium-ion battery power supply applications. It has a wide input voltage range, high switching frequency, and adjustable switching frequency. It has multiple operating modes, including CCM, DCM, PFM, and PWM, and supports both synchronous and asynchronous buck configurations. In addition, the device features integrated over-temperature protection, over-current protection, and under-voltage lock-out, providing a reliable, secure, and safe power supply.

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