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| ISL6446 Datasheet, PDF (10/20 Pages) Intersil Corporation – Dual (180° Out-of-Phase) PWM and Linear Controller | |||
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ISL6446
Typical Performance Curves
Oscilloscope plots are taken using the ISL6446EVAL1Z evaluation board, VIN = 12V, VOUT1 = 5V, VOUT2 = 3.3V, fs = 300kHz, unless
otherwise noted. (Continued)
VIN = 12V
EN/SSx TIED
VOUT1 = 5V TOGETHER
VOUT2 = 3.3V
EN/SSx
VIN = 12V
VOUT1 = 5V
VOUT2 = 3.3V
EN/SSx TIED
TOGETHER
EN/SSx
VOUT1
VOUT1
VOUT2
IOUT1 = 0A
IOUT2 = 0A
FIGURE 10. EN/SS START-UP
VOUT2
IOUT1 = 25A
IOUT2 = 25A
FIGURE 11. EN/SS START-UP
VIN = 12V
VOUT1 = 5V
VOUT2 = 3.3V
EN/SSx
VOUT1
VOUT2
IOUT1 = 0A
IOUT2 = 0A
FIGURE 12. EN/SS SHUT-DOWN
VIN = 12V
VOUT1 = 5V
VOUT2 = 3.3V
EN/SSx
VOUT1
IOUT1 = 25A
IOUT2 = 25A
VOUT2
FIGURE 13. EN/SS SHUT-DOWN
VIN = 12V
VOUT1 = 5V
IOUT = 0A
EN/SSx
PHASE
LGATE
VOUT
FIGURE 14. PRE-BIASED START-UP (VOUT PRE-BIASED AT 3.5V)
VIN = 12V
VOUT1 = 5V
IOUT = 10A~20A
EN/SS
VOUT
IL
PHASE
FIGURE 15. OVERCURRENT PROTECTION
10
FN7944.0
July 10, 2012
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