IRDC3822A International Rectifier, IRDC3822A Datasheet

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IRDC3822A

Manufacturer Part Number
IRDC3822A
Description
BOARD EVAL SYNC BUCK CONVERTER
Manufacturer
International Rectifier
Datasheets
IRDC3822A
Rev 0.0
1
02/22/2008

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IRDC3822A Summary of contents

Page 1

... Rev 0.0 02/22/2008 IRDC3822A 1 ...

Page 2

... This user guide contains the schematic and bill of materials for the IR3822A evaluation board. programmable The guide describes operation and use of the evaluation board itself. Detailed no information for IR3822A is available in the IR3822A data sheet. IRDC3822A MOSFET for optimum cost application and 2 ...

Page 3

... Rev 0.0 02/22/2008 Vcc input should be a well regulated 5V-12V supply Table I. Connections Connection Signal Name VIN+ V (+12V) in VIN- Ground Vcc+ Optional Vcc input Vcc- Ground for Optional Vcc input VOUT- Ground of V out VOUT+ V (+1.8V) out P_Good Power Good Signal IRDC3822A 3 ...

Page 4

... Connection Diagram V CC+ GROUND Fig. 1: Connection diagram of IR3822A evaluation board Rev 0.0 02/22/2008 V = +12v GROUND in P Good IRDC3822A GROUND V = +1.8v OUT 4 ...

Page 5

... Fig. 3: Board layout, bottom overlay (rear view) Rev 0.0 02/22/2008 Fig. 2: Board layout, top overlay IRDC3822A 5 ...

Page 6

... AGND Plain Single point connection between AGND and PGND. Rev 0.0 02/22/2008 Fig. 4: Board layout, mid-layer I. Fig. 5: Board layout, mid-layer II. IRDC3822A PGND Plain 6 ...

Page 7

... Rev 0.0 02/22/2008 1 AGnd3 15 Hg PGood Vcc IRDC3822A ...

Page 8

... Thick film, 1/10W, 1% 0603 300kHz, 6A, SupIRBuck 5x6mm Module Banana Jack, Insulated - Solder Terminal, Black Banana Jack- Insulated - Solder Terminal, Red Banana Jack- Insulated - Solder Terminal, Green IRDC3822A Manufacturer Mfr. Part Number Panasonic EEV-FK1E331P Panasonic ECJ-3YX1C106K Panasonic ECJ-1VB1H104K Panasonic ECJ-1VB1A224K Murata GRM1885C1H181JA01 Murata ...

Page 9

... Fig. 7: Start Load out Fig. 9: Start up with 0.5V Pre Bias, 0A Load Fig. 11: Inductor node at 6A load Ch :LX out Rev 0.0 02/22/2008 :I 4 out :V 3 out IRDC3822A Fig. 8: Start Load out 4 Fig. 10: Output Voltage Ripple, 6A load out , 4 out Fig. 12: Short (Hiccup) Recovery out PGood 9 ...

Page 10

... TYPICAL OPERATING WAVEFORMS Vin=Vcc=12V, Vo=1.8V, Io=3A- 6A, Room Temperature, No Air Flow Fig. 13: Transient Response step Rev 0.0 02/22/2008 out 4 out IRDC3822A 10 ...

Page 11

... TYPICAL OPERATING WAVEFORMS Vin=Vcc=12V, Vo=1.8V, Io=6A, Room Temperature, No Air Flow Fig. 14: Bode Plot at 6A load shows a bandwidth of 52.7kHz and phase margin of 52 degrees Rev 0.0 02/22/2008 IRDC3822A 11 ...

Page 12

... Load Current (A) Efficiency Vin=12V Vcc=5V Fig.15: Efficiency versus load current 2.0 2.5 3.0 3.5 4.0 Load Current (A) Power Loss Vin=12V Vcc=5V Fig.16: Power loss versus load current IRDC3822A 4.5 5.0 5.5 6.0 4.5 5.0 5.5 6.0 12 ...

Page 13

... THERMAL IMAGES Vin=12V, Vo=1.8V, Io=6A, Room Temperature, No Air Flow Rev 0.0 02/22/2008 Fig. 17: Thermal Image at 6A load Test point 3 is IR3822A IRDC3822A 13 ...

Page 14

... The pad lands (the 4 big pads other than the 11 IC pins) 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; no less than 0.1mm for 1 oz. Copper and no less than 0.23mm for 3 oz. Copper. Rev 0.0 02/22/2008 IRDC3822A ...

Page 15

... 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. Rev 0.0 02/22/2008 IRDC3822A ...

Page 16

... 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 to decrease the incidence of shorting the center land to the lead lands when the part is pushed into the solder paste. Rev 0.0 02/22/2008 IRDC3822A ...

Page 17

... This product has been designed and qualified for the Consumer market. Rev 0.0 02/22/2008 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. 11/07 IRDC3822A TAC Fax: (310) 252-7903 ...

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