IR3553_15 datasheet(11/22 Pages) IRF

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July 16, 2014 | DATASHEET V3.3

IR3553

40A Integrated PowIRstage®

TYPICAL OPERATING CHARACTERISTICS (CONTINUED)

Circuit of Figure 32, VIN=12V, VOUT=1.2V, ƒSW = 400kHz, L=150nH (0.29mΩ), VCC=7V, TAMBIENT = 25°C, no heat sink, no air flow,

8-layer PCB board of 3.7” (L) x 2.6” (W), no PWM controller loss, no inductor loss, unless specified otherwise.

Figure 19: Body-Braking® Delays

Figure 20: PWM Tri-state Delays, IOUT = 10A

Figure 21: PWM Tri-state Delays, IOUT = 10A

Figure 22: Diode Emulation Mode, IOUT = 3A

Figure 23: Body-Braking® Mode, IOUT = 3A

Figure 24: Diode Emulation Setup through BBRK# Capacitor

VCC

2V/div

BBRK#

1V/div

2ms/div

10V/div

BBRK#

5V/div

GATEL

5V/div

40ns/div

PWM

5V/div

PWM

2V/div

5V/div

100ns/div

PWM

2V/div

5V/div

100ns/div

PWM

2V/div

5V/div

400ns/div

GATEL

10V/div

PWM

2V/div

5V/div

400ns/div

GAETL

10V/div

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