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S3F84P4_AN_REV0.00 (PRELIMINARY SPEC) 4 SYSTEM VALIDATION
Table 4-1 System validation of efficiency
#1 #2 #3 #4 #5
BD1 BD2 BD1 BD2 BD1 BD2 BD1 BD2 BD1 BD2
Ips (power supply) (mA) 300 288 306 285 300 288 309 290 308 304
Imcu (m A)
(MCU供电LED)
18 19 18 19 18 19 18 19 18 19
3.82 3.6
3.85 3.60 3.86 3.6 3.90 3.59 3.90 3.65
Vfd V）
357
340 359 340 351 340 359 341 358 360
Vs mV）
87.68 81.6
87.03 82.5 87.35 81.6 87.37 80.95 87.45 81.11
Efficiency（%）
NOTE: BD1 and BD2 represent two boards, where the basic difference lies in the value of sensing resistance,
； . Due to the same reason, the efficiency of BD2 is always better than that
of BD1. The nominal tolerance of VISHAY WSR2 is 1%.
(1)1.0
S
RBD (2)1.1
S
RBD
S
amsun
g
Con
f
idential
16