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ISL6185 Datasheet, PDF (15/20 Pages) Intersil Corporation – Dual USB Port Power Supply Controller
Test Circuits (Continued)
ISL6185
5V
0-VIN
10k
FLT
VIN
OUT
ISL6185
EN
10µF
OUTPUT
10
EN
0.5VIN
OUTPUT
tON
90%
OUTPUT
90%
10%
tR
0.5VIN
VIN
0V
tOFF
10%
VIN
GND
90%
10%
tF
VIN
-GND
FIGURE 28A. TRANSIENT TEST CIRCUIT
FIGURE 29. TRANSIENT WAVEFORM MEASUREMENT
POINTS
ISL6185xEVAL1Z Schematic and Photo
R1
10k
AGND
V+
A
AGND
V+
EN1
U1
ISL6185
EN2
A
A
R2
FLT1
OUT1
OUT2
FLT2
10k
NOTE: EXPOSED PAD only on DFN packages
R3
10
C2
10µF
R4
10
C3
10µF
FLT1
OUT1
A
OUT2
A
FLT2
FIGURE 30A. ISL6185xEVAL SCHEMATIC
FIGURE 30B. ISL61851EVAL1Z BOARD PHOTO
FIGURE 30. ISL6185xEVAL1Z SCHEMATIC and ISL61851EVAL1Z PHOTOGRAPH
15
FN6937.0
October 22, 2010