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ISL78205 Datasheet, PDF (10/16 Pages) Intersil Corporation – 2.5A Buck Controller with Integrated High-Side MOSFET
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ISL78205
Typical Performance Curves (Continued)
VOUT 2V/DIV
PHASE 20V/DIV
VOUT 2V/DIV
PHASE 20V/DIV
2ms/DIV
FIGURE 9. VIN 36V, PRE-BIASED START-UP
VOUT 20mV/DIV (5V OFFSET)
PHASE 20V/DIV
5µs/div
FIGURE 11. SYNCHRONOUS BUCK, VIN 36V, IO 2A
2ms/DIV
FIGURE 10. SYNCHRONOUS BUCK MODE, VIN 36V, IO 2A,
ENABLE ON
VOUT 2V/DIV
PHASE 20V/DIV
2ms/div
FIGURE 12. SYNCHRONOUS BUCK MODE, VIN 36V, IO 2A,
ENABLE OFF
VOUT 100mV/DIV (5V OFFSET)
IOUT 1A/DIV
PHASE 20V/DIV
1ms/div
FIGURE 13. VIN 24V, 0A TO 2A STEP LOAD
10
PHASE 5V/DIV
VOUT 10mV/DIV (5V OFFSET)
20µs/div
FIGURE 14. NON-SYNCHRONOUS BUCK, FORCE PWM MODE,
VIN 12V, NO LOAD
FN7926.0
September 22, 2011
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