uRAM3H21 - Vicor Corporation

uRAM3H21 Output Ripple Attenuation Module

The MicroRAM has an internal passive filter that effectively attenuates ripple in the 50kHz to 1MHz range. An active filter provides attenuation from low frequency up to the 1MHz range. The user must set the headroom voltage of the active block with the external RHR resistor to optimize performance. The MicroRAM must be connected as shown in Figures 1 or 2 d.

Features

• >40dB ripple attenuation from 60Hz to 1MHz
• Integrated OR’ing diode supports N+1 redundancy
• Significantly improves load transient response
• Efficiency up to 98%
• User selectable performance optimization
• Combined active and passive filtering
• 3-30Vdc input range
• 20 and 30 Ampere ratings Data Sheet MicroRAM TM Output Ripple Attenuation Module Patents Pending Shown actual size: 2.28 x 1.45 x 0.5 in 57,9 x 36,8 x 12,7 mm Product Highlights Vicor’s MicroRAM output ripple attenuation module combines both active and passive filtering to achieve greater than 40dB of noise attenuation.