QSB7524S12 Power Supplies - Board Mount

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DC-DC Converters are devices used to convert a direct current from one voltage level to a different voltage level. This is accomplished by employing a series of switching elements and an electrical transformer. The type of DC-DC converter that is used is based on the current needs and the application that the device will be used for. One type of DC-DC converter that is often used for various on and off-board applications is the QSB7524S12.

Application Field

The QSB7524S12 is a single step-down voltage converter that is suitable for output voltages of 1.5V to 5V. This makes it a great choice for applications where lower voltage is required. It can also be used in various types of motor control applications as the switching frequency is 25 kHz to 100kHz. This makes it suitable for use with Brushless DC (BLDC) motors, stepping motors and others. It is also often used in automotive applications such as electric power steering, air conditioning systems and other components where reliable power is needed.

Working Principle

The QSB7524S12 is a single-start step-down converter that uses the pulse width modulation (PWM) to adjust the voltage output. The internal high-speed power MOSFETs can provide high efficiency with low electromagnetic interference (EMI) features. The PWM control of the QSB7524S12 is implemented by a current mode PWM controller with an integrated high-voltage power MOSFETs. The internal power MOSFETs offer fast switching speeds and high efficiency of up to 94%.

The design of the PWM control circles around the idea of voltage regulation. The QSB7524S12 starts a voltage conversion cycle by charging an external input capacitor until the voltage reaches the maximum level. The voltage is then converted to a lower level by discharging the capacitor. The voltage conversions are continuously repeated to maintain the regulated voltage. This type of converter can also work in both discontinuous conduction mode (DCM) and continuous conduction mode (CCM) depending on the load requirements.

The QSB7524S12 is a highly efficient and reliable DC-DC converter that is suitable for a wide range of applications. It can handle input voltages between 9V and 60V and is capable of delivering output voltages of 1.5V to 5V. The high efficiency and fast switching speed make it an ideal choice for various motor control applications as well as other automotive applications.

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