HIGHEST ACCURACY, SCALABLE, VRD/VRM-10 POWER CHIPSET REDUCES CAPACITANCE BY 60% IN SERVERS AND DESKTOPS
SUNNYVALE, CA-October 20, 2003-Maxim Integrated Products
(NASDAQ: MXIM) introduces the highest performance VRD/VRM-10 power chipset, consisting of the MAX8525 interleaved 2-to-8 phase, scalable, PWM controller and the MAX8523 high-current, high-speed, dual-phase gate driver. The MAX8525 features pin-selectable 2-, 3-, and 4-phase operation, as well as true 6- and 8-phase operation in master-slave mode. This operation provides output-current scalability for server, workstation, desktop, and networking applications.
The MAX8525 requires 60% less capacitance than its nearest competitor, reducing size and cost. Its proprietary, precision "Rapid Active Average" current sense, 0.4% accurate reference, and low-offset error amplifier provide the fastest and highest accuracy voltage positioning in the industry, thus reducing the need for output capacitors. The peak current-mode control and finite-gain precision error amplifier provide the fastest transient response to further reduce capacitor requirements.
The MAX8523 and MAX8525 offer two options for current sensing: high-accuracy current sensing using sense resistors or low-cost, lossless, temperature-compensated current sensing. Peak-current-mode architecture simplifies compensation using ceramic, polymer, or electrolytic capacitors. The 150kHz to 1.2MHz phase-switching frequency optimizes size, cost, and efficiency.
Packaged in a compact, 16-pin QSOP, the MAX8523 dual-phase driver permits high-frequency, small form factor (SFF) VRM designs. The MAX8525 VRD/VRM 10-controller is packaged in a 28-pin QSOP. Adjustable dead time for the high-side driver, adaptive dead time for the low-side driver, and its 4.5V to 6.5V gate voltage range, optimize design with a variety of MOSFETs.
The MAX8523/MAX8525 chipset is competitively priced to address high-volume server and desktop applications. The MAX8524 PWM controller is also available for legacy VRD/VRM9.1 designs.
The MAX8552 single-phase, wide-input gate driver is scheduled to release in July 2003. Used with the MAX8524/MAX8525 controllers, it provides greater layout flexibility and addresses desk-note and LCD PC applications. All products are specified for the extended-industrial (-40°C to +85°C) temperature range. Evaluation kits are available to speed designs.
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