IRDC3475 International Rectifier, IRDC3475 Datasheet
IRDC3475
Specifications of IRDC3475
Related parts for IRDC3475
IRDC3475 Summary of contents
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... SupIRBuck TM USER GUIDE FOR IRDC3475 EVALUATION BOARD DESCRIPTION The IR3475 SupIRBuck TM fully integrated and highly efficient DC/DC voltage regulator. The onboard constant on time hysteretic controller and MOSFETs make IR3475 a space-efficient solution that delivers up to 10A of precisely controlled output voltage. IR3475 is housed in a 4mmx5mm QFN package ...
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... V inputs and outputs of the board are listed in Table 1. IRDC3475 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 IRDC3475 Evaluation Board VIN IRDC3475 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 IRDC3475 4 ...
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... PCB Board Layout Fig. 4: Board Layout, Top Layer Fig. 5: Board Layout, Bottom Layer IRDC3475 5 ...
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... PCB Board Layout Fig. 6: Board Layout, Mid-layer I Fig. 7: Board Layout, Mid-layer II IRDC3475 6 ...
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... PGND VIN 13 BOOT 14 VCC FF 15 NC2 EN 16 3VCBP GND -Vout2s +Vout2s 10 5 -Vout1s +Vout1s 9 4 VOUT -Vdd2s +Vdd2s +3. -Vdd1s +Vdd1s VCC 7 2 -Vins +Vins VIN IRDC3475 3 7 ...
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... SPST switch, DIP, SPST, 2 position, SMT IR3475 4mm X 5mm QFN IRDC3475 MANUFACTURER PART NUMBER Murata GRM188R71E105KA12D TDK C2012X5R0J476M TDK C1608X7R1E104K Taiyo Yuden ...
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... L 5V/div 1V/div 1V/div 10A/div Fig. 13: Over Current Protection (tested by shorting VOUT to PGND) 5ms/div 2V/div 20µs/div 20mV/div = 0.1A) OUT 5ms/div 5V/div IRDC3475 = 25 A 5V/div 1V/div 500mV/div Fig. 10: Shutdown 5V/div 5A/div Fig. 12: CCM (I = 10A) OUT 1V/div 500mV/div 2A/div Fig. 14: Over Voltage Protection ...
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... Fig. 15: Load Transient 0-4A TYPICAL PERFORMANCE VIN = 12V, VCC = 5V, VOUT = 1.05V 300kHz, IOUT = 10A, T Fig. 17: Thermal Image (IR3475: 95 20mV/div 50µs/div 5V/div Fig. 16: Load Transient 6-10A = Inductor: 57 IRDC3475 = airflow, A PHASE 5A/div 50µs/div airflow PCB: 44 ...
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... Fig. 19: Switching Frequency vs. Output 1.064 1.062 1.060 1.058 1.056 1.054 Fig. 21: Line Regulation at 10A Load IRDC3475 = 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. IRDC3475 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. IRDC3475 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. IRDC3475 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 IRDC3475 TAC Fax: (310) 252-7903 15 ...