ISL6227
Typical Operation Performance
100
90
100
90
80
70
60
50
40
30
20
80
70
60
50
40
30
20
EFF@ 5V
EFF@ 5V
EFF@ 12V
EFF@ 19.5V
EFF@ 5V, PWM
EFF@ 12V, PWM
EFF@ 19.5V, PWM
EFF@ 12V
EFF@ 19.5V
EFF@ 5V, PWM
EFF@ 12V, PWM
EFF@ 19.5V, PWM
10
0
10
0
0.01
0.1
1
10
0.01
0.1
1
10
LOAD CURRENT (A)
LOAD CURRENT (A)
FIGURE 1. EFFICIENCY OF CHANNEL 1, 2.5V,
HYS/PWM MODE
FIGURE 2. EFFICIENCY OF CHANNEL 2, 1.8V,
HYS/PWM MODE
2.54
1.83
Vout @ 5V
Vout @ 5V
Vout @ 12V
Vout @ 12V
2.53
2.52
2.51
2.5
Vout @ 19.5V
Vout @ 19.5V
1.82
1.81
1.8
Vout @ 5V, PWM
Vout @ 12V, PWM
Vout @ 5V, PWM
Vout @ 12V, PWM
Vout @ 19.5V, PWM
Vout @ 19.5V, PWM
2.49
2.48
2.47
1.79
1.78
0
1
2
3
4
5
0
1
2
3
4
5
LOAD CURRENT (A)
LOAD CURRENT (A)
FIGURE 3. OUTPUT VOLTAGE OF CHANNEL 1 vs LOAD
FIGURE 4. OUTPUT VOLTAGE OF CHANNEL 2 vs LOAD
308
306
304
302
300
298
296
294
292
0.9025
0.902
0.9015
0.901
0.9005
0.9
0.8995
0.899
0.8985
75% Quantile
75% Quantile
290
Frequency Mean
Vref Mean
0.898
288
286
25% Quantile
25% Quantile
0.8975
-20
0
20
40
60
80
100
120
-20
0
20
40
60
80
100
120
TEMPERATURE (°C)
TEMPERATURE (°C)
FIGURE 5. SWITCHING FREQUENCY OVER TEMPERATURE
FIGURE 6. REFERENCE VOLTAGE ACCURACY OVER
TEMPERATURE
5
INTERSIL [ Intersil ]
