| V•I Chip long-life powertrain for high-performance projectors |
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Modern projector technologies are much more versatile than old slide projectors, enabling the display of images, video, and even data with high clarity, brightness and even portability. Liquid Crystal Display projection technology, for example, has contrast ratios in the range of 3000 to 1. This technology uses three LCD panels as prisms The trend in the mobile projection market is toward smaller, yet more powerful projectors. One Vicor customer leveraged the small package size and high efficiency In the customer’s design, a discrete PFC AC-DC front end provided a nominal 384 Vdc to two 384 Vin – 48 Vout BCM bus converters in parallel. The 48 V bus enabled the customer to reduce line loss and to use PRM regulator and VTM current multiplier combinations at 200 W each to set up the three different voltage rails for red, green and blue LEDs respectively. The V•I Chip modules provided tight load regulation for Vout and very fast transient response for pulsed loads. |
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