Datasheet

Vybrid Power Consumption and Options, Rev. 0
10 Freescale Semiconductor
Powering options
Figure 3. Vybrid power supply block diagram
8.2 Power options
The recommended circuit presented in Figure 3 (and used on the Vybrid tower module) is not very
efficient. Particularly in the case of low power applications, better powering options can be defined. The
powering options are presented in following paragraphs. Note that the efficiency of DC/DC converters
(usually 90-95%) is not taken into account.
All power options for the Vybrid controller solutions include:
• External ballast transistor powered from V
DD
(default)
• External ballast transistor powered from V
SDRAM