L6910A L6910

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Figure 10. PCB and Components Layouts

Figure 11. PCB and Components Layouts

Figures 10 and 11 show the demo board layout.

Considering the flexibility in the power mosfet configuration (up to three mosfet for both high side and low side),

it is possible to obtain different application idea with the same board.

In the following paragraphs, it will be described the standard demo-board configuration (8A) and the high current

configuration.

APPLICATION IDEA: 5V TO 12V INPUT; 0.9V TO 5V / 8A OUTPUT

This is a typical bus termination application in which the output voltage is programmed by the switch to 1.2V typ

(it can range from 0.9V to 5V) and the maximum output current is of 8A DC. The power mosfet are configured

with one STS12NF30L (30V, 10m

Ω typ @ Vgs=4.5V ) for both hgih side and low side.

Inductor selection

Since the maximum output current is 8A, to have a 15% ripple (1A) in worst case the inductor chosen is 4.1

µH.

SUMIDA CEE125 series inductor has been chosen with a 4.2

µA typical value.

Component Side

Internal Signal GND Layer

Internal Power GND Layer

Solder Side