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SMB117 Dataheets PDF



Part Number SMB117
Manufacturers Summit
Logo Summit
Description Four-channel Programmable DC-DC System Power Managers
Datasheet SMB117 DatasheetSMB117 Datasheet (PDF)

SMB113A/B/SMB117/A Preliminary Information High-power, Four-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 • Digital soft-start and output slew rate • Dynamic voltage control of all outputs • UV/OV monitoring of all outputs • Enable/Disable outputs independently • User friendly Graphical .

  SMB117   SMB117


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SMB113A/B/SMB117/A Preliminary Information High-power, Four-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 • Digital soft-start and output slew rate • Dynamic voltage control of all outputs • UV/OV monitoring of all outputs • Enable/Disable outputs independently • User friendly Graphical User Interface (GUI) • Four synchronous step-down output channels • Integrated RESET monitor • +2.7V to +6.0V Input Range • Highly accurate output voltage: <1.5% • Factory programmable dead times • 0% to 100% Duty Cycle operation • Undervoltage Lockout (UVLO) with hysteresis • 250kHz (SMB117A), 400kHz (SMB117), 800kHz (SMB113A), 1MHz (SMB113B) operating frequency • 96 bytes of user configurable nonvolatile memory Applications • Car & Marine Navigation Systems • Set-top Boxes • TVs • DDR Memory • Mobile Computing/PDAs • Office Equipment • DMB Systems SIMPLIFIED APPLICATIONS DRAWING INTRODUCTION The SMB113A/B and SMB117/A are highly integrated and flexible four-channel 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 multi-channel 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 SMB113A/B and SMB117/A integrate all the essential blocks required to implement a complete four-channel power subsystem consisting of four 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 SMB113A/B and SMB117/A 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 SMB113A/B and SMB117/A, this facilitates rapid design cycles and proliferation from a base design to future product generations. The SMB113A/B and SMB117/A are suited to a wide variety of applications with an input range of +2.7V to +6.0V. Higher input voltage operation can easily be implemented with a small number of external components. Output voltages are extremely accurate (<1.5%). Communication is accomplished via the industry standard I2C bus. All user-programmed settings are stored in non-volatile EEPROM of which 96 bytes may be used as general-purpose memory. The devices are offered in both the commercial and the industrial operating temperature range. The package type is a lead-free, RoHS compliant, 5x5 QFN-32. +2.7V to +6.0V or Li-Ion I2C/SMBus Enable Input Reset Input RESET Output (Power Good) SMB113A/B System Control and Monitoring 4 StepDown (Buck) Channels RESET Monitor +0.5V to Vin (Prog.) @ 1.5A/5A CPU Core +0.5V to Vin (Prog.) @ 1.5A/5A Memory, I/O +0.5V to Vin (Prog.) @ 1.5A/5A DSP/Codec +0.5V to Vin (Prog.) @ 1.5A/5A Analog/RF +2.7V to +6.0V or Li-Ion I2C/SMBus Enable Input Reset Input RESET Output (Power Good) SMB117/A System Control and Monitoring 4 StepDown (Buck) Channels RESET Monitor +0.5V to Vin (Prog.) @ 5A/10A CPU Core +0.5V to Vin (Prog.) @ 5A/10A Memory, I/O +0.5V to Vin (Prog.) @ 5A/10A DSP/Codec +0.5V to Vin (Prog.) @ 5A/10A Analog/RF Figure 1 – Applications schematic featuring the SMB113A/B/117/A programmable DC-DC controllers. Note: This is an applications example only. Some pins, components and values are not shown. © SUMMIT Microelectronics, Inc. 2007 757 N. Mary Avenue • Sunnyvale CA 94085 http://www.summitmicro.com/ 2111 2.5 6/11/2010 Phone 408 523-1000 • FAX 408 523-1266 1 GENERAL DESCRIPTION The SMB113A/B and SMB117/A are fully programmable DC-DC controllers that incorporate power delivery and advanced power monitoring and control functionality. The devices integrate four synchronous “buck” stepdown controllers in a space saving package. The SMB113A uses a fixed 800kHz whereas the SMB113B uses a fixed 1MHz, the SMB117 a fixed 400kHz and the SMB117A a fixed 250kHz Pulse Width Modulation (PWM) control circuit. A type-three voltage mode compensation network is used offering a cost effective solution without compromising transient response performance. By utilizing external N- and P– type MOSFET transistors the efficiency and load current level can be customized to fit a wide array of system requirements. The SMB113A/B and SMB117/A contain four buck outputs capable of producing an output voltage less than the input voltage. Each buck output voltage is set by an internal resistor divide.


SMB113B SMB117 SMB117A


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