Wide Vin range, 3A Buck Module with integrated passives suitable for industrial applications
Alpha and Omega Semiconductor Limited (AOS) a designer, developer, and global supplier of a broad range of power semiconductors, power ICs, and digital power products today announced the release of the AOZ29303QI, a simple-to-use highly integrated buck module. The product is available in a 9mm x 6mm QFN 48-lead exposed pad package with a 3.7mm height. AOZ29303QI can deliver an output current of 3A with input voltage up to 30V and output voltage up to 5.5V. The new device offers a simple, compact solution suited to a wide variety of applications such as industrial, factory automation, networking, and general-purpose point of load.
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The buck module comprises a controller IC, power MOSFET, rectifier diode, bootstrap capacitor, and an inductor. It can achieve up to 93% peak efficiency. When operating in low output current conditions, the device will run in a proprietary pulse energy mode (PEM) to achieve high efficiency by reducing switching loss. Under this mode, the regulators can still maintain 85% efficiency in 10mA light load operation making it an ideal choice for “always on” applications.
A suite of operation protections is available for this integrated module: cycle-by-cycle Over-Current Protection (OCP), output Over-Voltage Protection (OVP), output Short-Circuit Protection (SCP), and Over-Temperature Protection (OTP). External components required to realize a complete solution are minimal and offer the user flexibility to choose soft-start time, operating frequency, external compensation, and output voltage setting.
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“AOS’ first module is based on our AOZ128x family of regulators that has been adopted in a range of industrial applications such as factory automation, automated meter reading for its ease of use and wide operating range,” said Peter Cheng, Power IC Senior Marketing Director at AOS. “By offering a module option, AOS’ intention is to offer system designers an even simpler implementation, speeding time to market and improving solution size.”
Technical Highlights
- Operating Input Range: 4.5V to 30V
- Output Programmable Range: 0.8V to 5.5V
- 32V Absolute Maximum rating
- Maximum Output Current: 3A
- Protection Features: Over-Current Protection, Under-Voltage Lock-Out, Over-Voltage Protection,
Output Short-Circuit Protection, and Over-Temperature Protection - Programmable Soft-Start, Adjustable Switching Frequency
- Package: 9mm x 6mm QFN-48L
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