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