isl6744a Intersil Corporation, isl6744a Datasheet - Page 6

• Manufacturer Part Number: isl6744a
• Description: Intermediate Bus Pwm Controller
• Manufacturer: Intersil Corporation

Typical Performance Curves
FIGURE 1. OSCILLATOR CT DISCHARGE CURRENT GAIN
FIGURE 3. CAPACITANCE vs OSCILLATOR FREQUENCY
600
500
400
300
200
100
65
60
55
50
45
40
0
100
0.01
200
0.02
(RTD = 49.9kΩ)
300
0.03
400
0.04
RTD CURRENT (mA)
500
0.05
CT (pF)
6
600
0.06
1.07
1.06
1.05
1.04
1.03
1.02
1.01
1.00
0.99
0.98
700
0.07
FIGURE 5. TIMING CAPACITOR VOLTAGE vs RTD
0
800
0.08
10
900
0.09 0.10
20
1000
30
ISL6744A
40
RTD (kΩ)
50
1-10
1-10
60
100
10
FIGURE 4. CHARGE CURRENT vs TEMPERATURE
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
0.95
4
3
10
70
-40
FIGURE 2. DEADTIME vs CAPACITANCE
20
-25
CT = 470pF
80
-10
30
90
5
100
40
TEMPERATURE (°C)
CT = 680pF
20
RTD (kΩ)
50
35
60
50
CT = 1000pF
70
65
CT = 220pF
CT = 100pF
80
80
October 8, 2007
95
90
FN6554.0
110
100