MP2632B datasheet(41/43 Pages) MPS

41 / 43 page

MP2632B

– 3A SW CHARGER, 3A BOOST, ALL-IN-ONE

MP2632B Rev. 1.0

www.MonolithicPower.com

3/9/2018

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

PCB Layout Guidelines

Efficient PCB layout is critical for specified

noise, efficiency, and stability requirements. For

best results, follow the guidelines below.

1. Route the power stage adjacent to their

grounds.

2. Minimize the high-side switching node (SW,

inductor) trace lengths in the high-current

paths.

3. Keep the switching node short and away

from all small control signals, especially the

feedback network.

4. Place the input capacitor as close to VIN and

PGND as possible.

5. Place the local power input capacitors

connected from SYS to PGND as close to

the IC as possible.

6. Place the output inductor close to the IC.

7. Connect the output capacitor between the

inductor and PGND of the IC.

8. Connect the power pads for VIN, SYS, SW,

BATT, and PGND to as many copper

planes on the board as possible for high-

current applications.

This

improves

thermal

performance

because the board conducts heat away

from the IC.

Connect a ground plane directly to the

return of all components through vias. Use

a star ground design approach to keep the

circuit

block

currents

isolated

(power-

signal/control-signal).

This reduces noise coupling and ground-

bounce issues. A single ground plane for

this design provides good results.

10. Place the ISET, OLIM, and ILIM resistors

very close to their respective IC pins.

MP2632B Datasheet(PDF) 41 Page - Monolithic Power Systems

MP2632B Datasheet(HTML) 41 Page - Monolithic Power Systems

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43

Datasheet Download

Link URL