RAA230223GSB#HA0

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DC-DC switching regulators, more commonly referred to as step-down converters, are power devices that convert a higher input voltage to a lower output voltage while efficiently regulating the desired output voltage. Whether it’s controlling the power of digital microprocessors or optimizing the performance of power supply designs, DC-DC converters can provide a compact and reliable solution.

RAA230223GSB#HA0 Overview

The RAA230223GSB#HA0 is a high-efficiency, bipolar, step-down DC-DC converter. It utilizes the MOSFET and rectifier technology to provide an output voltage range of 2.3~3.3V and a wide 4.8V to 18V input voltage range. It is capable of providing a maximum output current of 1.5A while delivering an output ripple voltage of 25mV and a noise of 200mV, making it ideal for applications that require low noise levels. The integrated quasi-resonant system reduces the number of EMI components required, which provides increased system efficiency, reduced cost, and reduced PCB area.

RAA230223GSB#HA0 Application Field

The RAA230223GSB#HA0 is ideally suited for portable and battery powered applications such as digital media players, wireless communications equipment, digital cameras, battery powered tools and especially digital cellular phones. Other potential applications for this power module include LCD monitor power supplies, external hard disk drives, PDA and other handheld electronic devices.

RAA230223GSB#HA0 Working Principle

The RAA230223GSB#HA0 is based on a quasi-resonant switching frequency topology, which combines the advantages of both continuous and discontinuous conduction with the output voltage rails. This type of power converter design is used to minimize the switching frequency ripple, which leads to a lower switching loss and less noise on the input current. At the same time, it allows the power device to switch faster, which provides a higher efficiency.

The RAA230223GSB#HA0 also supports power saving functions such as soft startup, power good, short circuit protection, and over temperature protection. It provides an accurate current limit and a wide range voltage setting range. The power stage of the module includes two power MOSFETs, two rectifier diodes, one inductor, one capacitor, and other components.

Advantages of RAA230223GSB#HA0

The RAA230223GSB#HA0 offers numerous advantages over other DC-DC switching converters, including:

• High efficiency – up to 95% efficiency at full load.
• Low noise – low ripple and low output noise.
• Wide input voltage range – 4.8V to 18V.
• Wide output voltage range – 2.3V to 3.3V.
• High accurate current limit – excellent load protection.
• Low standby power – less than 5mW at no load.
• Low EMI – the quasi-resonant system reduces the number of components used, which leads to lower EMI radiation.
• Small size – the power module is very small, which makes it suitable for portable and battery powered applications.
• Protections – over temperature protection, short circuit protection, and so on.

Conclusion

The RAA230223GSB#HA0 is a high-efficiency, bipolar, DC-DC switching converter that exhibits excellent load protection and low noise characteristics. Its wide 4.8V to 18V input and 2.3V to 3.3V output voltage range, as well as its low standby power consumption, make it ideal for applications such as digital media players, wireless communications equipment, digital cameras, battery powered tools and especially digital cellular phones. The numerous advantages of the power module, such as its high efficiency, low noise, wide input and output voltage, and low EMI, have made it a popular choice for designers looking for an easy and efficient way to power their systems.

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