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Power management

Summit Microelectronics

  • Power management controller

4.5 - 13.5 V, 15 A | SMB211

Article: 00112544

Power management controller

The SMB211/212 are highly integrated and flexible power managers designed for use in a wide range of applications from printers and set- top boxes to servers and network equipment. The built-in non-volatile digital programmability allows system designers to custom tailor the device to suit almost any power supply application.

The SMB211/212 feature a synchronous high current step-down buck converter that can provide an output current of more than 15A. They can operate with an input voltage of +4.5V to +13.5V and provide programmable output voltages that are typically accurate to 1.0%. The SMB211 is available with a switching frequency of 250, 500, 750 and 1000kHz, while the SMB212 is available with a switching frequency of 250, 375, 500 and 625kHz.

Additional sophisticated power control/monitoring functions required by complex systems are built-in and programmed via an industry-standard 2-wire serial interface. These include digitally programmable output voltage set-point and margining, power-on delay, soft-start, switching frequency and UV/OV output voltage monitoring.

The integration of features and built-in flexibility of the SMB211/212 allows the system designer to create a platform solution that can be easily modified via software without major hardware changes. This facilitates rapid design cycles and proliferation from a base design to future generations of product.

Communication is accomplished via an industry standard 2-wire serial bus. All non-volatile programmed settings are stored in non-volatile memory and reset during power-up. The operating temperature range is 30C to +85C and the available package is a 3mm x 3mm QFN-20.

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