Three-channel Programmable DC-DC System Power Managers - Summit Microelectronics
Description
SMB214A/B/C
High-power, Three-channel Programmable DC-DC System Power Managers
FEATURES & APPLICATIONS
• Digital programming of all major parameters via I2C interface and non-volatile memory • Output voltage set point • Input/battery voltage monitoring • Output power-up/down sequencing • Dynamic voltage control of all outputs • UV/OV monitoring of all outputs • Enable/Disable outputs independently • User friendly Graphical User Interface (GUI) • Three synchronous step-down output channels • Integrated RESET monitor • +2.
7V to +6.
0V Input Range • Highly accurate output voltage: <2.
5% • Factory programmable dead times • 0% to 100% Duty Cycle operation • Undervoltage Lockout (UVLO) with hysteresis • Operating frequency: 400kHz (SMB214A), 800kHz (SMB214B), 1MHz (SMB214C) Preliminary Information
INTRODUCTION
The SMB214A/B/C are highly integrated and flexible threechannel power managers designed for use in a wide range of applications.
The built-in digital programmability allows system designers to custom tailor the device to suit almost any multichannel power supply application from digital camcorders to set-top boxes.
Complete with a user friendly GUI, all programmable settings, including output voltages and input/output voltage monitoring, can be customized with ease.
The SMB214A/B/C integrate all the essential blocks required to implement a complete three-channel power subsystem consisting of three synchronous step-down “buck” controllers.
Additionally sophisticated power control/monitoring functions required by complex systems are built-in.
These include digitally programmable output voltage set point, powerup/down sequencing, enable/disable, dynamic voltage management and UV/OV monitoring on all channels.
The integration of features and built-in flexibility of the SMB214A/B/C allows the system designer to create a “platform solution” that can be easily modified via software without major hardware changes.
Combined with the re-programmability of the SMB214A/B/C, thi...
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