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| ISL78236 Datasheet, PDF (14/24 Pages) Intersil Corporation – Dual 3A Current Sharing 2.5MHz High Efficiency Synchronous Buck Regulator | |||
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ISL78236
Typical Operating Performance for Dual PWM Operation
Unless otherwise noted, operating conditions are: TA = +25°C; VOUT1 = 1.8V; VOUT2 = 1.8V; IOUT1 = 0A to 3A; IOUT2 = 0A to 3A, L1 = L2 = 0.6µH,
COUT1 = 2x22µF, COUT2 = 2x22µF, FSW = 2.5MHz. (Continued)
VIN = 5V
LX2 5V/DIV
VIN = 5V
LX2 5V/DIV
VOUT2 0.5V/DIV
IL2 1A/DIV
PG2 5V/DIV
FIGURE 29. OUTPUT SHORT CIRCUIT CHANNEL 2
VOUT2 1V/DIV
IL2 1A/DIV
PG2 5V/DIV
FIGURE 30. OUTPUT SHORT CIRCUIT RECOVERY (FROM HICCUP)
CHANNEL 2
1V/DIV
4ns/DIV
1V/DIV
4ns/DIV
FIGURE 31. LX JITTER AT NO LOAD, VIN = 3V
1V/DIV
4ns/DIV
FIGURE 32. LX JITTER AT 3A LOAD, VIN = 3V
1V/DIV
4ns/DIV
FIGURE 33. LX JITTER AT NO LOAD, VIN = 5V
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FIGURE 34. LX JITTER AT 3A LOAD, VIN = 5V
FN8624.0
April 28, 2014
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