NR263S Datasheet, PDF (22/29 Pages) Sanken electric – Light Load High Efficiency Synchronous Buck Regulator IC

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8.2.2 PCB Layout & Recommended Land Pattern
The pattern example of the printed circuit board for our Demo Board is shown in the Fig8-6. (Double sided PCB)
PCB Size：40mm×40mm
Thickness：1.6mm
Copper foil thickness：35μm
Fig. 8-4 Component mounting side (surface)
Fig. 8-5Back side (see from surface)
Fig. 8-6 Our demo board circuit diagram for NR260S series
(In reference for NR263S)
C1,C2:10μF/25V C3:0.1μF C4,C5:22μF/16V C7:0.047μF R3:≦10Ω
R1:100kΩ
R4 & R5:Short R6:Open L1:6.8μH
*Part number will match the silk-prints of the demo board.
*Optional Parts
C11：Phase advance capacitor･･･For experiment
C12：Bypass capacitor (IN to AGND&PGND)･･･For experiment
C13：Snubber circuit capacitor･･･For experiment, R10：Snubber circuit resistor･･･For experiment
R2：Open (R2 is not used in the NR260S series)
R3：Resistor for spike noise reduction･･･For experiment
D1：The Schottky barrier diode for Efficiency improvement･･･For experiment
It is recommended a Schottky barrier diode having a smaller V_F than the parasitic diode V_F of the Lo-side MOSFET.
NR263S series-DSE Rev.1.0
SANKEN ELECTRIC CO.,LTD
22
2016.03.09
http://www.sanken-ele.co.jp/en/
© SANKEN ELECTRIC CO.,LTD. 2016