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High-Performance and Highly Versatile Triple Controller Offers Sequencing and Tracking Control for Networks, Servers, and Telecom Applications
Triple-Output Buck Controller with Tracking/Sequencing
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Note to Editor:
- The MAX15003 is a triple-output, synchronous, step-down controller capable of delivering up to 15A per output while providing excellent line and load regulation.
- Adjustable parameters allow designers to optimize trade-offs in performance, size, and cost.
- This device offers independent control for sequencing and tracking (ratiometric or coincident) the outputs during power-up and power-down.
- This product is ideal for high-performance, small-sized power supplies in networks and servers, and telecom applications.
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SUNNYVALE, CA—February 27, 2008—Maxim Integrated Products (Pink Sheets: MXIM) introduces the MAX15003, a triple-output synchronous step-down controller that delivers at least 15A per output while maintaining excellent line and load regulation. The current limit, output voltage (down to 0.6V), switching frequency (200kHz to 2MHz), and the external compensation network can all be adjusted. With this exceptional design flexibility, the designer can optimize performance, board space, and cost. The MAX15003 is optimized for high-performance, small size power-management solutions in networks and servers, and telecom applications.
High Integration and Flexible Operation Replace Discrete Solutions
The MAX15003 reduces the need for multiple ICs to produce three rails. Integrating the three controllers into this single package is far more practical and powerful than the competitive multiple-IC solution. The MAX15003 thus allows for a small, compact solution in space-constrained applications.
The MAX15003 can operate at a high-switching frequency (up to 2.2MHz) and 120° out-of-phase. This reduces both the amount of input capacitance and the size of the inductor, and allows smaller passive components to be used.
The ability to track voltages during power-up/down (especially coincident tracking) is often difficult and done with an external discrete solution that adds board space and cost. Integrating sequencing and tracking control in the MAX15003 provides two important benefits. First, it eliminates the need for an external discrete solution or reference input signal, and it offers the option of ratiometric tracking, coincident tracking, or sequencing for both power-up and power-down.
Three power-good indicators and an integrated reset further reduce overall component count.
Flexible Controllers Simplify Design
Each of the MAX15003's PWM sections use a voltage-mode control scheme with external compensation to provide good noise immunity and maximum flexibility with a wide selection of inductor values and capacitor types. Each PWM section operates at the same, fixed switching frequency that is programmable from 200kHz to 2.2MHz. The switching frequency can easily be set with an external resistor or synchronized to an external clock signal by using the SYNC input. A logic-enable input for each controller turns each output on and off independently. Each controller also features a digital soft-start and soft-stop.
The MAX15003 is offered in a thermally enhanced 48-pin, 7mm x 7mm TQFN package, and is fully specified from -40°C to +125°C. Prices start at $3.52 (1000-up, FOB USA). For more information please visit: http://www.maxim-ic.com/Triple-Controller
For a dual controller with tracking and sequencing, Maxim also offers the MAX15002.
Maxim Integrated Products, a two billion dollar company, designs and manufactures ICs for analog and mixed-signal applications. The company's broad portfolio of 27 product categories is among the industry's deepest, with over 5400 products.
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