IRDC3865 International Rectifier, IRDC3865 Datasheet
IRDC3865
Specifications of IRDC3865
Related parts for IRDC3865
IRDC3865 Summary of contents
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... SupIRBuck TM USER GUIDE FOR IRDC3865 EVALUATION BOARD DESCRIPTION The IR3865 SupIRBuck TM fully integrated and highly efficient DC/DC voltage regulator. The onboard constant on time hysteretic controller and MOSFETs make IR3865 a space-efficient solution that delivers up to 10A of precisely controlled output voltage in a 4mm x 5mm QFN package. ...
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... V inputs and outputs of the board are listed in Table 1. IRDC3865 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 IRDC3865 Evaluation Board VIN IRDC3865 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 IRDC3865 4 ...
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... PCB Board Layout Fig. 4: Board Layout, Top Layer Fig. 5: Board Layout, Bottom Layer IRDC3865 5 ...
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... PCB Board Layout Fig. 6: Board Layout, Mid-layer I Fig. 7: Board Layout, Mid-layer II IRDC3865 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 VIN IRDC3865 3 7 ...
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... Bill of Materials IRDC3865 8 ...
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... OUT 5V/div 1V/div 1V/div 10A/div Fig. 13: Over Current Protection (tested by shorting VOUT to PGND) 5ms/div 5V/div 10µs/div 20mV/div = 0.1A) OUT 2ms/div 5V/div IRDC3865 = 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 (IR3865: 81 20mV/div 50µs/div 5V/div Fig. 16: Load Transient 6-10A = Inductor: 52 IRDC3865 = airflow, A PHASE 5A/div 50µs/div airflow PCB: 39 ...
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... Fig. 19: Switching Frequency vs. Load Current 1.062 1.060 1.058 1.056 1.054 1.052 1.050 Fig. 21: Line Regulation at 10A Load IRDC3865 airflow Load 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. IRDC3865 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. IRDC3865 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. IRDC3865 14 ...
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... IR WORLD HEADQUARTERS: Data and specifications subject to change without notice. 06/2011 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 Visit us at www.irf.com for sales contact information IRDC3865 TAC Fax: (310) 252-7903 15 ...