IR3476 datasheet(11/21 Pages) IRF

Part #	IR3476

Description	12A Highly Integrated SupIRBuck Continuous 12A Load Capability

PDF	21 Pages

Scroll/Zoom	100%

Manufacturer	IRF [International Rectifier]

Direct Link	http://www.irf.com

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11 / 21 page

March 27, 2013 | V2.2 | PD97603

IR3476

12A Highly Integrated SupIRBuck

TYPICAL OPERATING DATA

Tested with demoboard shown in Figure 4, VIN = 12V, VCC = 5V, VOUT = 1.05V, Fs = 300kHz, TA = 25

oC, no airflow, unless

otherwise specified.

Figure 17: Load Transient 0‐8A

Figure 19: DCM/FCCM Transition

Figure 21: Thermal Image at VIN = 12V, IOUT = 12A

(IR3476: 98

oC, Inductor: 58oC, PCB: 47oC)

Figure 18: Load Transient 4‐12A

Figure 20: FCCM/DCM Transition

Figure 22: Thermal Image at VIN = 19V, IOUT = 12A

(IR3476: 104

oC, Inductor: 61oC, PCB: 50oC)

VOUT

PHASE

50mV/div 10V/div 5A/div

20µs/div

VOUT

PHASE

FCCM

PHASE

VOUT

FCCM

PHASE

VOUT

50mV/div 10V/div 5A/div

20µs/div

5V/div 10V/div 500mV/div 5A/div

10µs/div

2V/div 10V/div 500mV/div 5A/div

5µs/div

IR3476 Datasheet(PDF) 11 Page - International Rectifier