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XRP7714ILB-0X18-F Datasheet(PDF) 11 Page - Exar Corporation |
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XRP7714ILB-0X18-F Datasheet(HTML) 11 Page - Exar Corporation |
11 / 29 page X XR RP P7 77 71 14 4 Q Qu ua ad d C Ch ha an nn neell D Diig giitta all P PW WM M S Stteep p D Do ow wn n C Co on nttrro olllleerr © 2010 Exar Corporation 11/29 Rev. 1.1.4 FEATURES AND BENEFITS General DPWM Benefits: • Eliminate temperature and time variations associated with passive components in: − Output set point − Feedback compensation − Frequency set point − Under voltage lock out − Input voltage measurement − Gate drive dead time • Tighter parameter tolerances including operating frequency set point • Easy configuration and re-configuration for different Vout, Iout, Cout, and Inductor selection by simply changing internal PID coefficients. No need to change external passives for a new output specification. • Higher integration: Many external circuits can be handled by monitoring or modifying internal registers • Selectable DPWM frequency and Controller Clock Frequency Other Benefits: • A single voltage is needed for regulation [no External LDO required]. • I2C interface allows: − Communication with a System Controller or other Power Management devices for optimized system function − Access to modify or read internal registers that control or monitor: − Output Current − Input and Output Voltage − Soft-Start/Soft-Stop Time − ‘Power Good’ − Part Temperature − Enable/Disable Outputs − Over Current − Over Voltage − Temperature Faults − Adjusting fault limits and disabling/enabling faults − Packet Error Checking (PEC) on I2C communication • 6 Configurable GPIO pins, (4 if I2C is in use). Pins can be configured in several ways: − Fault reporting (including OCP, OVP, Temperature, Soft-Start in progress, Power Good) − Allows a Logic Level interface with other non-digital IC’s or as logic inputs to other devices − Possible to configure as traditional ‘enable’ pin for all 4 outputs − 2 GPIOs can be dedicated to the I2C Interface as required by the customers design • Frequency and Synchronization Capability − Selectable switching frequency between 300kHz and 1.5MHz − Channel to channel phase relationship is a fixed 90 degrees − Main oscillator clock and DPWM clock can be synchronized to external sources − ‘Master’, ‘Slave’ and ‘Stand-alone’ Configurations are possible • Internal MOSFET Drivers − Internal FET drivers (3Ω/6Ω) for each Channel − Built-In Automatic Dead-time adjustment − 30ns Rise and Fall times • PowerArchitect™ Design and Configuration Software: − In its simplest form only VIN, VOUT, and Iout for each channel is required. − The software calculates configuration register content based upon customer requirements. PID coefficients for correct loop response (for automatic or customized designs) can be generated and sent to the device. − Configurations can be saved and/or recalled − GPIOs can be configured easily and intuitively − Synchronization configuration can be adjusted − Interface can be used for real-time debugging and optimization • Customizing XRP7714 with customer parameters − Once a configuration is finalized it can be sent to EXAR and can reside in pre-programmed parts that customers can order with an individual part number. − Allows parts to be used without I2C interface System Benefits: • Reliability is enhanced via communication with the system controller which can obtain real time data on an output voltage, input voltage and current. • System processors can communicate with the XRP7714 directly to obtain data or make adjustments to react to circuit conditions • A system process or could also be configured to log and analyze operating history, perform diagnostics and if required, take the supply off-line after making other system adjustments. • If customer field service is a possibility for your end product, parameter reporting and history would provide additional capabilities for troubleshooting or aid in future system upgrades. |
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Similar Description - XRP7714ILB-0X18-F |
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