ISL85402EVAL1Z 查看數據表（PDF） - Intersil
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ISL85402EVAL1Z Datasheet PDF : 22 Pages
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Performance Curves (Continued)
ISL85402
VOUT BUCK 100mV/DIV (5V OFFSET)
VIN_BOOST_INPUT 5V/DIV
PHASE_BOOST 10V/DIV
VOUT BUCK 100mV/DIV (5V OFFSET)
VIN_BOOST_INPUT 5V/DIV
PHASE_BOOST 10V/DIV
PHASE_BUCK 10V/DIV
PHASE_BUCK 10V/DIV
20ms/DIV
FIGURE 21. BOOST BUCK MODE, BOOST INPUT STEP FROM
36V TO 3V, VOUT BUCK = 5V, IOUT_BUCK = 1A
10ms/DIV
FIGURE 22. BOOST BUCK MODE, BOOST INPUT STEP FROM
3V TO 36V, VOUT BUCK = 5V, IOUT_BUCK = 1A
VOUT 5V/DIV
IL_BOOST 2A/DIV
PHASE_BOOST 20V/DIV
PHASE_BUCK 20V/DIV
10ms/DIV
FIGURE 23. BOOST BUCK MODE, VO = 9V, IO = 1.8A, BOOST INPUT
DROPS FROM 16V TO 9V DC
95
15V VIN
90
85
30V VIN
80
75
5V VIN
6V VIN
70
65
9V VIN
60
55
50
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4
LOAD CURRENT (A)
FIGURE 24. EFFICIENCY, BOOST BUCK, 500kHz, VOUT 12V,
TA = +25°C
12
FN7640.1
April 25, 2013
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