Rainbow-electronics MAX1567 Manuale Utente Scaricare il pdf (Pagina 34)

MAX1566/MAX1567

Six-Channel, High-Efficiency, Digital

Camera Power Supplies

Designing a PC Board

Good PC board layout is important to achieve optimal

performance from the MAX1566/MAX1567. Poor design

can cause excessive conducted and/or radiated noise.

Conductors carrying discontinuous currents and any

high-current path should be made as short and wide as

possible. A separate low-noise ground plane contain-

ing the reference and signal grounds should connect to

the power-ground plane at only one point to minimize

the effects of power-ground currents. Typically, the

ground planes are best joined right at the IC.

Keep the voltage-feedback network very close to the

IC, preferably within 0.2in (5mm) of the FB_ pin. Nodes

with high dV/dt (switching nodes) should be kept as

small as possible and should be routed away from

high-impedance nodes such as FB_. Refer to the

MAX1566/MAX1567 EV kit data sheet for a full PC

board example.

Chip Information

TRANSISTOR COUNT: 9420

PROCESS: BiCMOS

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Rainbow-electronics MAX1567 Manuale Utente Pagina 34