IRDC3473 International Rectifier, IRDC3473 Datasheet
IRDC3473
Specifications of IRDC3473
Related parts for IRDC3473
IRDC3473 Summary of contents
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... SupIRBuck TM USER GUIDE FOR IRDC3473 EVALUATION BOARD DESCRIPTION The IR3473 SupIRBuck TM fully integrated and highly efficient DC/DC voltage regulator. The onboard constant on time hysteretic controller and MOSFETs make IR3473 a space-efficient solution that delivers precisely controlled output voltage. IR3473 is housed in a 4mmx5mm QFN package ...
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... V inputs and outputs of the board are listed in Table 1. IRDC3473 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 IRDC3473 Evaluation Board VIN IRDC3473 GROUND VOUT = +1.05V GROUND 3 ...
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... PCB Board Layout Fig. 3: Board Layout, Bottom Components Fig. 2: Board Layout, Top Components IRDC3473 4 ...
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... PCB Board Layout Fig. 4: Board Layout, Top Layer Fig. 5: Board Layout, Bottom Layer IRDC3473 5 ...
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... PCB Board Layout Fig. 6: Board Layout, Mid-layer I Fig. 7: Board Layout, Mid-layer II IRDC3473 6 ...
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... PGND VIN 13 BOOT 14 VCC FF 15 NC2 EN 16 3VCBP GND -Vout2s +Vout2s 10 5 -Vout1s +Vout1s VOUT 9 4 -Vdd2s +Vdd2s +3. -Vdd1s +Vdd1s VCC 7 2 -Vins +Vins 6 1 VIN IRDC3473 3 7 ...
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... SPST switch, DIP, SPST, 2 position, SMT IR3473 4mm X 5mm QFN IRDC3473 MANUFACTURER PART NUMBER Murata GRM188R71E105KA12D TDK C2012X5R0J476M TDK C1608X7R1E104K Taiyo Yuden ...
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... L 5V/div 1V/div 500mV/div 10A/div Fig. 13: Over Current Protection (tested by shorting VOUT to PGND) 5ms/div 5V/div 5µs/div 20mV/div = 0.1A) OUT 2ms/div 5V/div IRDC3473 = 25 A 5V/div 1V/div 500mV/div Fig. 10: Shutdown 10V/div 5A/div Fig. 12: CCM (I = 6A) OUT 1V/div 500mV/div 2A/div Fig. 14: Over Voltage Protection ...
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... Fig. 15: Load Transient 0-3A TYPICAL PERFORMANCE VIN = 12V, VCC = 5V, VOUT = 1.05V 300kHz, IOUT = 6A, T Fig. 17: Thermal Image (IR3473: 70 50mV/div 100µs/div 10V/div Fig. 16: Load Transient 3- Inductor: 49 IRDC3473 = airflow, A 5A/div 100µs/div airflow PCB ...
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... Fig. 19: Switching Frequency vs. Output 1.090 1.085 1.080 1.075 1.070 1.065 1.060 1.055 1.050 1.045 1.040 Fig. 21: Line Regulation at 6A Load IRDC3473 = 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 less than 0.1mm for 1 oz. Copper less than 0.23mm for 3 oz. Copper. IRDC3473 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. IRDC3473 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. IRDC3473 14 ...
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... IR WORLD HEADQUARTERS: Data and specifications subject to change without notice. 02/2011 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 Visit us at www.irf.com for sales contact information IRDC3473 TAC Fax: (310) 252-7903 15 ...