IR3553MTRPBF International Rectifier, IR3553MTRPBF Datasheet - Page 12

• Manufacturer Part Number: IR3553MTRPBF
• Description: The IR3553 integrated PowIRstage is a synchronous buck gate driver IC with co‐packed control and synchronous MOSFETs and Schottky diode.
• Manufacturer: International Rectifier

Specifications of IR3553MTRPBF

• Package: PQFN / 4 x 6
• Iout (a): 40
• Switch Freq (khz): up to 1.0MHz
• Input Range (v): 4.5 - 15
• Output Range (v): 0.25 - (VCC -2.5)

TYPICAL OPERATING CHARACTERISTICS (CONTINUED)
Circuit of Figure 32, V
8-layer PCB board of 3.7” (L) x 2.6” (W), no PWM controller loss, no inductor loss, unless specified otherwise.
Figure 25: Diode Emulation Setup through BBRK# Input
Figure 26: Diode Emulation Setup through BBRK# Input
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
Figure 27: Current Sense Amplifier Output vs. Current
0
12
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March 12, 2012 | FINAL DATASHEET
10
IN
=12V, V
4ms/div
4ms/div
15
Output Current (A)
OUT
20
=1.2V, ƒ
25
SW
= 400kHz, L=150nH (0.29mΩ), VCC=7V, T
30
35
40A Integrated PowIRstage®
VCC
2V/div
BBRK#
2V/div
VCC
2V/div
BBRK#
2V/div
40
Figure 30: Current Sense Amplifier Output, I
Figure 29: Current Sense Amplifier Output, I
Figure 28: Current Sense Amplifier Output, I
AMBIENT
2us/div
2us/div
2us/div
= 25°C, no heat sink, no air flow,
IR3553
OUT
= 20A, 300kHz
OUT
OUT
= 20A
= 0A
V(IOUT)-
V(REFIN)
0.2V/div
IL
10A/div
SW
20V/div
V(IOUT)-
V(REFIN)
0.2V/div
IL
10A/div
SW
20V/div
V(IOUT)-
V(REFIN)
0.2V/div
IL
10A/div
SW
20V/div