IRDC3651
Rev 1.112/20/2006
RD-0616
5
LAYOUT -- MID-LAYERS
The two mid-layers are used primarily for Power Ground.
Figure 3 – Internal layers of IR3651 evaluation board.
Mid-layer 1
Mid-layer 2
Page 1: ...l input J6 Sync input J1 External 12V supply option The IR3651 is a high voltage PWM controller designed for high performance synchronous Buck DC DC applications The IR3651 drives a pair of external N...
Page 2: ...006 RD 0616 2 CONNECTION DIAGRAM for default configuration Note Ground connection pads are located on the bottom side of the circuit board Figure 1 Connections to IR3651 evaluation board 48V Power Sup...
Page 3: ...erent MOSFET configurations can be used eight pin SOIC packages on the top side of the board or MX packaged DirectFets on the bottom side of the board The bottom side location of the DirectFet package...
Page 4: ...e bottom side location of the DirectFet packages allows convenient attachment of a heat sink Figure 3 Bottom layer of the IR3651 evaluation board Heat Sink mounting area optional The IR3651 controller...
Page 5: ...IRDC3651 Rev 1 1 12 20 2006 RD 0616 5 LAYOUT MID LAYERS The two mid layers are used primarily for Power Ground Figure 3 Internal layers of IR3651 evaluation board Mid layer 1 Mid layer 2...
Page 6: ...IRDC3651 Rev 1 1 12 20 2006 RD 0616 6 Figure 4 Schematic of the IR3651 evaluation board...
Page 7: ...sonic ECG ERJ 6ENF4991V 1 R2 17 4k 1 8W 1 RESISTOR thick film 0805 Panasonic ECG ERJ 6ENF1742V 1 R1 28 7k 1 8W 1 RESISTOR thick film 0805 Panasonic ECG ERJ 6ENF2872V 1 R5 255k 1 8W 1 RESISTOR thick fi...
Page 8: ...IRDC3651 Rev 1 1 12 20 2006 RD 0616 8 TYPICAL Output WAVEFORMS Vin 48V Vo 3 3V Room Temperature No Air Flow Figure 5 Startup waveforms 0A load 10A load Cyan VIN Blue VOUT Green IOUT...
Page 9: ...IRDC3651 Rev 1 1 12 20 2006 RD 0616 9 TYPICAL Output WAVEFORMS Vin 48V Vo 3 3V Room Temperature No Air Flow Figure 7 Output Ripple 10A load Blue VOUT Green IOUT Figure 6 0A to 10A Transient...
Page 10: ...0 2006 RD 0616 10 TYPICAL Output WAVEFORMS Vin 48V Vo 3 3V Room Temperature No Air Flow Figure 8 Short Circuit Response Short Circuit Operation and Recovery Short Circuit Detail of Hiccup Blue VOUT Gr...
Page 11: ...IRDC3651 Rev 1 1 12 20 2006 RD 0616 11 TYPICAL Output WAVEFORMS Vin 48V Vo 3 3V Room Temperature No Air Flow Figure 9 Shutdown Blue VOUT Cyan VIN Green IOUT Magenta VSS 0A Load 10A Load...
Page 12: ...IRDC3651 Rev 1 1 12 20 2006 RD 0616 12 TYPICAL Output WAVEFORMS Vin 48V Vo 3 3V Room Temperature No Air Flow Figure 10 Efficiency...
Page 13: ...ure Distribution bottom side Vin 48V Vo 3 3V 10A Load Room Temperature No Air Flow 1 IR5651 Controller 2 Inductor 3 Output Capacitors 1 IRF6646 Sync Rectifier FET 2 IRF6662 Switch FET 3 12V linear sup...
Page 14: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information International Rectifier IRDC3651...
