概要
説明
The ISL65426EVAL1Z evaluation board is used to evaluate the ISL65426 high-efficiency, dual output, monolithic synchronous buck converter operating over an input voltage range of 2.375V to 5.5V. This single-chip power solution provides two output voltages, which are selectable or externally adjustable from 1V to 80% of the supply voltage while delivering up to 6A of total output current. The two PWMs are synchronized 180° out-of-phase reducing the RMS input current and ripple voltage.
The ISL65426EVAL1Z switches at a fixed frequency of 1MHz and utilizes current-mode control with integrated compensation to minimize the size and number of external components and provide excellent transient response. The internal synchronous power switches are optimized for good thermal performance, high-efficiency, and eliminate the need for an external Schottky diode.
特長
- High efficiency: Up to 95%
- Fixed frequency: 1MHz
- Operates from 2.375V to 5.5V supply
- ±1% reference
- Flexible output voltage options
- Programmable 2-bit VID input
- Adjustable output from 0.6V to 4.0V
- User partitioned power blocks
- Ultra-compact DC/DC converter design
- PWMs synchronized 180° out-of-phase
- Independent enable inputs and system enable
- Stable all ceramic solutions
- Excellent dynamic response
- Independent output digital soft-start
- Power-good (PGOOD) output voltage monitor
- Short-circuit and thermal-overload protection
- Overcurrent and undervoltage protection
- Pb-free plus anneal available (RoHS compliant)
アプリケーション
- FPGA, CPLD, DSP, and CPU core and I/O voltagesXilinx Spartan III™, Virtex II™, Virtex II Pro™, Virtex 4™
- Altera Stratix™, Stratix II™, Cyclone™, Cyclone II™
- Actel Fusion™, LatticeSC™, LatticeEC™
- Low-voltage, high-density distributed power systems
- Point-of-load (POL) regulation
- Distributed power systems
- Set-top boxes
設計・開発
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