ILC6360 데이터 시트보기 (PDF) - Impala Linear Corporation

부품명

상세내역

제조사

ILC6360

Step-Up/Step Down DC-DC Converter for 1-Cell Lithium-Ion Batteries

Impala Linear Corporation 

Step-Up/Step-Down DC-DC Converter for 1-Cell Lithium-Ion Batteries

Layout And Grounding Considerations

High frequency switching and large peak currents means

PCB design for DC-DC converters requires careful consid-

eration. A general rule is to place the DC-DC converter cir-

cuitry well away from any sensitive RF or analog compo-

nents. The layout of the DC-DC converters and its external

components are also based on some simple rules to mini-

mize EMI and output voltage ripple.

Layout

1. Place all power components, ILC6360, inductor, input

capacitor and output capacitor as close together as possible.

2. Keep the output capacitor as close to the ILC6360 as

possible with very short traces to the VOUT and GND pins.

Typically it should be within 0.25 inches or 6mm.

3. Keep the traces for the power components wide, typically >

50mil or 1.25mm.

4. Place the external networks for LBI and VFB close to the

ILC6360, but away from the power components as far

as possible.

Grounding

1. Use a star grounding system with separate traces for the

power ground and the low power signals such as LBI/SD

and VFB. The star should radiate from where the power

supply enters the PCB.

2. On multilayer boards use component side copper for

grounding around the ILC6360 and connect back to a

quiet ground plane using vias.

CIN

100µF

VIN

L1

15µH

ON/OFF

R4

ILC6360CIR-ADJ

COUT

10µF 100µF

1

LX

VOUT 8 + +

2 VIN

GND 7

R1

3 LBI/SD LBO 6

4 SYNC

VFB 5

R2

Local "Quiet" Ground

Power Ground

VOUT

R3

Impala Linear Corporation

ILC6360 1.1

(408) 574-3939 www.impalalinear.com

Jan 1999 9

Share Link: