Programmable Buck Regulators support EnergyStar® applications.
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Press Release Summary:
Series SMB20X DC-DC buck regulators are single or dual output step-down converters with high-side MOSFET supplying up to 4 A output current. Serial digital interface and non-volatile memory facilitate configuration and programming. Input voltage range is +4.5-16 V and output range is +0.8-5.0 V, accurate to 2.5% over load/line/temperature, while output voltage is programmable in 100 mV or ~10 mV steps. Output enable, sequencing, softstart, and output voltage monitoring are also programmable.
Original Press Release:
Summit's Tiny Programmable Single and Dual Integrated Buck Regulators Support "Green" Standards in Multimedia Consumer Electronics
Digital control enables advanced power management for the latest multimedia SoC's while high integration reduces size, cost and time to market
Sunnyvale, Calif. - Summit Microelectronics has announced new programmable power manager (PPM) integrated circuits that will bring sophisticated digital power control and programmability to a much wider range of high-volume consumer applications than previously available. Summit's new SMB20X family supports advanced power management for "green" and EnergyStar® applications, including digital LCD/LED televisions, cable/satellite/IP set-top boxes, and other multimedia, broadband and small-office-home-office (SoHo) communications equipment.
The new family members include the SMB207/207A/208/208A/209/209A single- and dual-output integrated DC-DC buck regulators. The SMB20X family combines Summit's digital programmability with dense integration, ultra-compact size, and cost-effective bill-of-materials (BoM) necessary for mass-market consumer products.
With a serial digital interface and on-board non-volatile memory, the SMB20X family can be easily configured during development and re-programmed in system by host software. The result is a flexible, digitally controlled power supply design that is easily customizable without tedious hardware design cycles or complex microcontroller-style GPIO-based control. The integration of advanced power control functions eliminates external components and cost, improves functionality and performance, and minimizes development time.
"Summit once again raises the bar by expanding its line of programmable power managers with the SMB20X family of buck regulators," stated Abid Hussain, Summit vice-president of marketing and applications. "The unprecedented combination of flexibility, integration, reduced BoM and solution size brings true digital power management to whole new segments of high-volume, cost-sensitive applications and enables advanced power-saving techniques to meet stringent Energy Star(TM) and other "green" energy-saving standards."
Features
The SMB20X Family integrates a single or dual step-down DC-DC buck regulator with on-board high-side MOSFET(s) supplying up to 1A+1A (SMB207), 2A+ 2A (SMB208) or 4A (SMB209) output currents. Input voltage range is +4.5V to +16V and output voltage range is +0.8V to +5.0V, accurate to 2.5% over load/line/temperature. Output voltage is programmable in either 100mV steps (SMB207/208/209) or ~10mV steps (SMB207A/208A/209A). Switching frequency is programmable to 500kHz or 1MHz with 180° phase interleave for SMB207/208. Light load efficiency is supported by automatic pulse-skipping operation. Integrated frequency compensation and feedback resistors minimize BoM count, cost and design effort.
Output enable, sequencing, softstart and output voltage (UV) monitoring are all programmable as well. Output voltage monitoring is coupled to "PowerGood" or "RESET" signals with programmable output assignment and output channels can be enabled via the serial I2C interface or by the ENABLE pins. Nominal output voltages maybe changed once the system is powered up, enabling the latest SoC's to reduce platform power using advanced voltage/clock scaling modes. The SMB20X"A" versions with the ~10mV "fine step" output voltage programming allow for easy voltage margining to support easy system validation and characterization of these same advanced SoC's.
Tiny 3mm x 3mm QFN packaging and minimal external components yield an ultra-compact (typically <100mm2) solution size. Programmed configuration is held in the OTP non-volatile memory but may be changed in system by host software via the I2C port. The rated operating temperature range is -40C to +85C.
Applications
The SMB20X Family is ideal for a wide range of multimedia consumer and broadband/SoHo applications such as digital LCD/LED/plasma/IP televisions, digital cable/satellite/IP set-top boxes and media gateways, broadband cable/DSL modems, wireless SoHo routers and switches.
Pricing and Availability
The SMB20X family is available in a tiny thermally-enhanced, RoHS-compliant , lead-free 3mm X 3mm, 20-pad QFN. Available now in production quantities, the SMB20X family is priced between $1.00 each for the SMB207 to $1.40 each for the SMB208A/209A respectively in quantities of 10,000 units.
DESIGN SOFTWARE AND PROGRAMMER FOR PROTOTYPE DEVELOPMENT
To speed user product development, Summit offers customers the SMB208EV companion evaluation board and a graphical user interface (GUI) software so designers can quickly see the features and benefits and design a prototype intelligent power supply solution with the SMB20X Family. This is a complete development tool that lets designers easily manipulate the characteristics of their systems. The SMB208EV design kit includes menu-driven Microsoft Windows (R) GUI software to automate programming tasks and also includes all necessary hardware to interface to the USB port of a laptop or PC.
Once a user completes design and prototyping, the SMB208EV automatically generates a HEX data file that can be transmitted to Summit for review and approval. Summit then assigns a unique customer identification code to the HEX file and programs the customer's production devices prior to final electrical test operations. This ensures that the device will operate properly in the end application.
About Summit Microelectronics: "Programmable Power for a Digital World(TM)"
Summit Microelectronics is the leader in flexible, mixed-signal integrated power management solutions, for the consumer, communications and computing markets, combining high-performance analog power with powerful digital control in a single chip. This integration and flexibility combined with a simple GUI-based development tool and non-volatile configuration yields the lowest total BoM cost while reducing system design time and effort. For more information visit www.summitmicro.com.
"MobileGreen Technologies(TM)"
Summit Microelectronics actively supports industry efforts towards creating a greener planet. The Company's MobileGreen(TM) technologies significantly reduce the energy consumption and waste material footprint in our customers' products. For more information visit www.summitmicro.com/MobileGreen.
Summit Microelectronics URLs:
The URL for the SMB208 product family is
http://www.summitmicro.com/prod_select/summary/SMB208/SMB208.htm
The URL for the SMB208 product family fact sheet PDF is
http://www.summitmicro.com/prod_select/summary/SMB208/SMB208FactSheet.pdf
