Description
m o .c U 4 t e e h S a at Applications Frequency Synchronous Buck .D High Converters for Computer Processor Power w w High Frequency Isolated DC-DC w .
Features
* s × Vin × f + (Qrr × Vin × f ) ⎝ 2 ⎠
* dissipated primarily in Q1.
Ploss = (Irms 2 × Rds(on ) ) ⎛ Qgd +⎜I × × Vin × ig ⎝ + (Qg × Vg × f ) + ⎛ Qoss × Vin × f ⎞ ⎝ 2 ⎠ ⎞ ⎞ ⎛ Qgs 2 f⎟ + ⎜ I × × Vin × f ⎟ ig ⎠ ⎝ ⎠
This simplified loss equation includes the terms Qgs2 and Qoss which are new to Power
Applications
* Frequency Synchronous Buck . D High Converters for Computer Processor Power w w High Frequency Isolated DC-DC w Converters with Synchronous Rectification
l l l
PD - 95443A
IRFR3707ZPbF IRFU3707ZPbF
HEXFET® Power MOSFET
for Telecom and Industrial Use Lead-Free
Benefits l Very Low RDS(on) at 4.5V V
