ISL6440EVAL1Z Intersil, ISL6440EVAL1Z Datasheet - Page 7

• Manufacturer Part Number: ISL6440EVAL1Z
• Description: EVALUATION BOARD FOR ISL6440
• Manufacturer: Intersil

Specifications of ISL6440EVAL1Z

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 2, Non-Isolated
• Voltage - Output: 1.8V, 3.3V
• Current - Output: 2A, 2A
• Voltage - Input: 12V
• Regulator Topology: Buck
• Frequency - Switching: 300kHz
• Board Type: Fully Populated
• Utilized Ic / Part: ISL6440
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

Typical Performance Curves
(Oscilloscope Plots Are Taken Using the ISL6440EVAL1B Evaluation Board, VIN = 12V, Unless Otherwise Noted)
FIGURE 11. PWM1 EFFICIENCY vs LOAD (3.3V), VIN = 12V
V
AC COUPLED
I
FIGURE 7. LOAD TRANSIENT RESPONSE VOUT1 (3.3V)
OUT1
OUT1
1A/DIV
100
200mV/DIV
90
80
70
60
FIGURE 9. PWM SOFT-START WAVEFORM
0
V
OUT1
VCC_5V 1V/DIV
1
1V/DIV
LOAD CURRENT (A)
7
2
(Continued)
3
4
ISL6440
FIGURE 12. PWM2 EFFICIENCY vs LOAD (3.3V), VIN = 12V
FIGURE 10. OVERCURRENT HICCUP MODE OPERATION
V
AC COUPLED
V
FIGURE 8. LOAD TRANSIENT RESPONSE VOUT2 (3.3V)
I
SS1 2V/DIV
I
OUT2
OUT1
L1
OUT2
2A/DIV
100
200mV/DIV
1A/DIV
2V/DIV
90
80
70
60
0
1
LOAD CURRENT (A)
2
3
October 4, 2005
FN9040.2
4