MAX5953A/MAX5953B/MAX5953C/MAX5953D
IEEE 802.3af PD Interface and PWM Controllers
with Integrated Power MOSFETs
______________________________________________________________________________________ 21
Layout Recommendations
All connections carrying pulsed currents must be very
short, as wide as possible, and have a ground plane as
a return path. The inductance of these connections
must be kept to a minimum due to the high di/dt of the
currents in high-frequency-switching power converters.
Current loops must be analyzed in any layout pro-
posed, and the internal area kept to a minimum to
reduce radiated EMI. Ground planes must be kept as
intact as possible.
Table 3. Component Suppliers
COMPONENT SUPPLIERS WEBSITE
International Rectifier www.irf.com
Fairchild www.fairchildsemi.com
Power FETS
Vishay-Siliconix www.vishay.com/brands/siliconix/main.html
Dale-Vishay www.vishay.com/brands/dale/main.html
Current-Sense Resistors
IRC www.irctt.com/pages/index.cfm
ON Semi www.onsemi.com
General Semiconductor www.gensemi.com
Diodes
Central Semiconductor www.centralsemi.com
Sanyo www.sanyo.com
Taiyo Yuden www.t-yuden.comCapacitors
AVX www.avxcorp.com
Coiltronics www.cooperet.com
Coilcraft www.coilcraft.com
Magnetics
Pulse Engineering www.pulseeng.com
