IRDC3476 International Rectifier, IRDC3476 Datasheet
IRDC3476
Specifications of IRDC3476
Related parts for IRDC3476
IRDC3476 Summary of contents
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... SupIRBuck TM USER GUIDE FOR IRDC3476 EVALUATION BOARD DESCRIPTION The IR3476 SupIRBuck TM fully integrated and highly efficient DC/DC voltage regulator. The onboard constant on time hysteretic controller and MOSFETs make IR3476 a space-efficient solution that delivers up to 12A of precisely controlled output voltage. IR3476 is housed in a 20-lead 5mmx6mm QFN package ...
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... V inputs and outputs of the board are listed in Table 1. IRDC3476 has two input supplies, one for biasing (VCC) and the other for input voltage (VIN). Separate supplies should be applied to these inputs. VCC input should be a well regulated 4.5V to 5.5V supply connected to VCC and PGND. Enable (EN) is controlled by the first switch of SW1, and FCCM option can be selected by the second switch of SW1 ...
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... CONNECTION DIAGRAM Control Switch for: EN FCCM GROUND VCC = +5.0V Fig. 1: Connection Diagram of IRDC3476 Evaluation Board VIN= +12V GROUND IRDC3476 GROUND VOUT = +1.05V 3 ...
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... PCB Board Layout Fig. 2: Board Layout, Top Components Fig. 3: Board Layout, Bottom Components IRDC3476 4 ...
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... PCB Board Layout Fig. 4: Board Layout, Top Layer Fig. 5: Board Layout, Bottom Layer IRDC3476 5 ...
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... PCB Board Layout Fig. 6: Board Layout, Mid-layer I Fig. 7: Board Layout, Mid-layer II IRDC3476 6 ...
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... IRDC3476 7 ...
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... Bill of Materials IRDC3476 8 ...
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... L 5V/div 1V/div 1V/div 10A/div Fig. 13: Over Current Protection (tested by shorting VOUT to PGND on demoboard) 5ms/div 5V/div 20mV/div 10µs/div = 0.1A) OUT 2ms/div 5V/div IRDC3476 = 25 A 5V/div 1V/div 500mV/div Fig. 10: Shutdown 5V/div 5A/div Fig. 12: CCM (I = 12A) OUT 1V/div 500mV/div 2A/div Fig. 14: Over Voltage Protection ...
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... Fig. 15: Load Transient 0-8A TYPICAL PERFORMANCE VIN = 12V, VCC = 5V, VOUT = 1.05V 300kHz, IOUT = 12A, T Fig. 17: Thermal Image (IR3476: 98 50mV/div 20µs/div 10V/div Fig. 16: Load Transient 8-12A = Inductor: 58 IRDC3476 = airflow, A PHASE 5A/div 20µs/div airflow PCB: 47 ...
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... Fig. 19: Switching Frequency vs. Output 1.060 1.058 1.056 1.054 1.052 1.050 Fig. 21: Line Regulation at 12A Load IRDC3476 = airflow Load Current (A) Current Input Voltage ( ...
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... Pad lands (the 4 big pads) length and width should be equal to maximum part pad length and width. However, the minimum metal to metal spacing should be no less than; 0.17mm for 2 oz. Copper or no less than 0.1mm for 1 oz. Copper or no less than 0.23mm for 3 oz. Copper. IRDC3476 12 ...
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... The land pad should be Solder Mask Defined (SMD), with a minimum overlap of the solder resist onto the copper of 0.05mm to accommodate solder resist misalignment. Ensure that the solder resist in between the lead lands and the pad land is ≥ 0.15mm due to the high aspect ratio of the solder resist strip separating the lead lands from the pad land. IRDC3476 13 ...
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... The maximum length and width of the land pad stencil aperture should be equal to the solder resist opening minus an annular 0.2mm pull back in order to decrease the risk of shorting the center land to the lead lands when the part is pushed into the solder paste. IRDC3476 14 ...
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... R 2.644 S 1.500 t1, t2 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 Visit us at www.irf.com for sales contact information Data and specifications subject to change without notice. 11/10 IRDC3476 MILIMITERS INCHES MIN MAX MIN 0.450 0.0138 0.0177 2.541 0.0961 0.1000 ...