Dual-Output Power-Supply

Controller for Notebook Computers

______________________________________________________________________________________

17

_________________EV Kit Information

The MAX786 evaluation kit (EV kit) embodies the

standard application circuit, with some extra pull-

up and pull-down resistors needed to set default logic

signal levels. The board comes configured to accept

battery input voltages between 6.5V and 30V, and pro-

vides up to 25W of output power. All functions are con-

trolled by standard CMOS/TTL logic levels or DIP

switches. The kit can be reconfigured for lower battery

voltages by setting the oscillator to 200kHz and

increasing the 5V output filter capacitor value.

The D1 and D2 comparators can be used as precision

voltage detectors by installing resistor dividers at each

input.

Figure 7. MAX786 EV Kit Top Component Layout and Silk

Screen, Top View

Figure 8. MAX786 EV Kit Ground Plane (Layers 2 and 3),

Top View

Figure 9. MAX786 EV Kit Top Layer (Layer 1), Top View

1.0"

1.0"

1.0"