EL7534IYZ-T7

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EL7534IYZ-T7 Application Field and Working Principle

EL7534IYZ-T7 is a type of DC/DC switching regulator from the PMIC (Power Management IC) product family. Generally speaking, the device can be used in a number of applications in order to convert, regulate and control power. More specifically, the EL7534IYZ-T7 is designed and optimized for point-of-load (POL) modules and other digital supplies that require high current and/or high accuracy in control.

In terms of physical size, the EL7534IYZ-T7 is a compact, 0.75 x 1.75 mm device that is suitable for automotive and industrial applications as well. It further features 40, 45 and 50V input/output voltage capability, alongside over-voltage protection and extended operating temperature to 105℃. Other features include 2.5A of output current, up to 94% of efficiency and up to 10MHz of switching frequency.

Now, let us look at the working principle of the EL7534IYZ-T7. DC/DC switching regulators are built by connecting a voltage source, diode and capacitor, as well as a current-controlled switch and a transformer. This is shown in the following diagram.

At steady state, the EL7534IYZ-T7 draws a constant current from the voltage source via the diode. The capacitor stores the energy for the voltage regulator. The core of the switching regulator is the control switch, which is used to control the current through the primary of the transformer. When the current is increasing, the control switch is turned on. When the current is decreasing, the control switch is turned off. This is known as the “pulse-width modulation” technique, which is used by the EL7534IYZ-T7.

When the control switch is turned on, the current will flow through the primary of the transformer, which induces a voltage on the secondary. The energy is delivered to the load via the capacitor, while the energy is also transferred to the power source. This process is repeated periodically and produces a regulated voltage across the output.

In summary, the EL7534IYZ-T7 is a type of DC/DC switching regulator from the PMIC family, which can be used to regulate and control power. Its features include 40, 45 and 50V input/output capability, 2.5A output current, 94% efficiency and 10MHz switching frequency. It works by controlling the current through the primary of the transformer, allowing for the transfer of energy to and from the load and power source.

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