IR3553MTRPBF International Rectifier, IR3553MTRPBF Datasheet - Page 10

• 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.
60
50
40
30
20
10
0
1.30
1.25
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
1.30
1.25
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
200
Figure 13: Normalized Power Loss vs. VCC Voltage
Figure 15: VCC Current vs. Switching Frequency
5.00
120
Figure 14: Power Loss vs. Output Inductor
300
130
10
5.25
Vcc=6.8V
Vcc=5V
140
5.50
400
March 12, 2012 | FINAL DATASHEET
IN
150
=12V, V
5.75
Output Inductor (nH)
500
VCC Voltage (V)
160
6.00
fsw (kHz)
OUT
600
170
=1.2V, ƒ
6.25
180
700
6.50
190
SW
800
= 400kHz, L=150nH (0.29mΩ), VCC=7V, T
6.75
200
7.00
900
210
9.0
7.5
6.0
4.5
3.0
1.5
0.0
-1.5
-3.0
-4.5
-6.0
9.0
7.5
6.0
4.5
3.0
1.5
0.0
-1.5
-3.0
-4.5
-6.0
40A Integrated PowIRstage®
1000
Figure 17: Switching Waveform, I
Figure 16: Switching Waveform, I
Figure 18: PWM to SW Delays, I
AMBIENT
400ns/div
400ns/div
40ns/div
= 25°C, no heat sink, no air flow,
OUT
OUT
IR3553
OUT
= 10A
= 40A
= 0A
PWM
5V/div
SW
5V/div
GATEL
10V/div
PWM
5V/div
SW
5V/div
GATEL
10V/div
PWM
2V/div
SW
5V/div