DDR Series www.murata-ps.com 9A Active Power Power Terminator for DDR Memories Typical unit FEATURES For high performance termination of DDR computer memory busses Compatible to JEDEC JESD 79 and 8-9 DDR specifications Ideal for active wideband termination of SSTL-2 logic Non-isolated design with 1.25V typ. @ 9 Amps output 3-5.5V input with 85% (typ.) efficiency Miniature industry standard 1.6 x 0.5 x 0.2 inch surface mount or SIP package Offers unique source/sink DDR requirements plus automatic reference tracking Retains controlled impedances and minimizes distortion of DDR digital data and double-side clocks Operates over -40 to +65C with 200 lfm airflow Standard vertical mount, optional horizontal mount Designed for efficient termination of SSTL-2 (Series Stub Terminated Logic) signals in DDR (Dual Data Rate) memories, the DDR series non-isolated DC/DC converters are powered by the bus supply of 3 to 5.5 Volts and are compatible to industry-standard JEDEC JESD specifications for DDR memories. PRODUCT OVERVIEW The DDR terminators are supplied in a 1.6 by 0.5 inch surface-mount or SIP package measuring only 0.2 inches high. Full output power (3.3VIN) is available up to +65Celsius with only 200 LFM (linear feet per minute) of cooling airflow. No heatsink is required. Modern SSTL-2 logic uses reduced power voltages (typically 2.5 Volts), high switching currents and a relatively narrow voltage threshold window for logic switching. These factors contribute to the 266MHz data transfer rate. The Vtt termination voltage output of the DDR operates approximately at the midpoint voltage of the bus (i.e, about 1.25V) and therefore will either source or sink current up to 9 Amps. To maintain a reliable window in the logic threshold, the design tracks the Vref input voltage at high bandwidth, operating typically at one half the bus Vddq voltage of 2.5V. In addition, the DDR series features a very high current slew rate of up to 40 Amps per microsecond and fast settling while switching from source to sink or sink to source. These features insure no data errors on the memory bus. The DDR is supplied either in a vertical SIP (Single Inline Package) mount or a horizontal pinned mount. The converter meets UL 60950-1, CSA and IEC safety certifications and both conducted and radiated EMI (electromagnetic interference) specifications. The output is rated for continuous short circuit protection and the on-board controller will shut down the converter if the temperature reaches 110C or output current exceeds 11 Amps. The DDR-9-W3H-C is available with RoHS reduction of hazardous substance compliance. SIMPLIFIED SCHEMATIC 3%.3% ). 6). 2%-/4% /./&& ). #/.42/,,%2 62%& ).054 #/--/. /6%2 4%-0%2!452% #/--/. 6/54 3)'.!, '2/5.$ n3%.3% ). Typical topology is shown For full details go to www.murata-ps.com/rohs www.murata-ps.com/support MDC_DDR Series.B03 Page 1 of 5 DDR Series 9A Active Power Power Terminator for DDR Memories DDR MEMORY APPLICATION 6$$1 6 -EMORY -ODULES 6## TO 6 3%.3% 6). 6/54 644 62%& 62%& !'0 'RAPHICS $)-. 7 -%-/29 #/.42/,,%2 $$2 !#4)6% 4%2-).!4/2 #/- $)- #05 #/3NUBBER !RRAY LINES TYPICAL "US 4RANSCEIVERS 0#) "US n3%.3% 2%-/4% /./&& MECHANICAL SPECIFICATIONS 1.60 (40.64) HORIZONTAL MOUNT Case B9 0.50 (12.70) 14 13 12 11 10 9 8 7 6 5 4 3 2 Pin 1 PLASTIC HEADER INPUT/OUTPUT CONNECTIONS Function P66 Pin Function P66 1 +Sense Input 8 Common 2 -Sense Input 9 Common 3 On/Off Input 10 Common 4 +Input 11 -Output 5 +Input 12 -Output 6 +Input 13 -Output 7 Common 14 VREF Input 0.35 (8.89) Component locations are typical. Actual units may vary slightly. 0.020O.001 (5.08) 0.100 TYP (2.54) 1.30 (33.02) 0.13 (3.30) 0.045 (1.14) 0.165 (4.19) COPPER LEADS 6%24)#!, -/5.4 Case B10 490 #/00%2 ,%!$3 $)! 0,!34)# (%!$%2 Dimensions in inches (mm) MDC_DDR Series.B03 Page 2 of 5 DDR Series 9A Active Power Power Terminator for DDR Memories Performance/Functional Specifications Typical at TA = +25C under nominal line voltage, VOUT = 1.25V, full-load conditions unless noted. Input Input Voltage Range 3 to 5.5 Volts (3.3V nominal) Start-Up Threshold 2 Volts min., 2.5 Volts typ. Input Current, Current Sourcing Mode At 3.3VIN, 1.25VOUT At 3.3VIN, 0.9VOUT At 5VIN, 1.25VOUT At 5VIN, 0.9VOUT 4.15 Amps max. 3.18 Amps max. 2.75 Amps max. 2.13 Amps max. Inrush Transient 0.003A2/sec, maximum No-load Input Current 70mA typ., 100mA max. Short Circuit Current 4 Amps Shut Down Mode Input Current 7mA Input Reflected Ripple Current 10mAp-p VREF Input Range 0.7 to 1.45V VREF External Reference Current 0.1A (VREF min. to max., IOUT = 9A) Remote On/Off Control +Positive Logic Remote Sense Range Environmental Operating Temperature Range (Ambient) No derating, vertical mount -40 to +65C @ 200 lfm airflow Derating See derating curves PCB/Case Temperature Range -40 to +100C, no derating. Thermal Protection/Shutdown 110C Storage Temperature Range -55 to +125C Altitude 0 to 10,000 feet Relative Humidity 10% to 90%, non-condensing Physical, Safety Outline Dimensions 1.60 x 0.50 x 0.20 inches 40.64 x 12.7 x 5.08mm Weight 0.25 ounces (7g) On = no connection, open collector or 0.8V to +VIN max. applied at 60A. Off = 0 to 0.7V or pulled low. Pin Material Nickel plate over copper alloy + 10% of VOUT Output Pin Dimensions 0.02 inches (0.508mm) Calculated MTBF TBD hours Electromagnetic Interference Conducted (FCC part 15, EN55055) Radiated (FCC part 15, EN55055) Safety UL/cUL 60950-1, CSA-C22.2 No.234 IEC/EN 60950-1 Maximum Output Power 11.36 Watts (VREF = 1.25V) Minimum Loading No minimum load Maximum Capacitive Loading 2000F, OSCON low-ESR (0.02) 10,000F (aluminum electrolytic) Output Voltage Accuracy VREF 1% Current limit inception is given at either cold start-up or after warm-up for VREF = 0.9 or Total Accuracy (Line, Load, Temp.) 5% Mean Time Before Failure is calculated using the Telecordia (Bellcore) SR-332 Method 1, See Absolute Maximum Ratings for allowable input voltage. Input Ripple Current is tested and specified over a 5-20 MHz bandwidth. Input filtering is CIN = 200F, CBUS = 1000F, LBUS = 1H. 1.25V. Case 3, ground fixed conditions, TCASE = +40C, Full load. Output Current, Source +9.00 Amps maximum Output Current, Sink -9.00 Amps maximum Short Circuit Current 13 Amps Short Circuit Duration Continuous, output shorted to ground Input Voltage 7Vdc max., 100msec duration Short Circuit Protection Fold back technique, autorecovery Input Reverse Polarity None Current Limit Inception 11 Amps, sourcing mode Output Current Current-limited. Device can withstand indefinite short circuit. Transfer Characteristics Efficiency, Current Sourcing Mode, 9A load 83% typ., 85% max. At 3.3VIN, 1.25VOUT At 3.3VIN, 0.9VOUT 78% typ., 80% max. At 5VIN, 1.25VOUT 82.5% typ., 84.5% max. At 5VIN, 0.9VOUT 77% typ., 79% max. Efficiency, Current Sinking Mode, 9A load At 3.3VIN, 1.25VOUT 81% typ., 83% max. At 3.3VIN, 0.9VOUT 74.5% typ., 76.5% max. At 5VIN, 1.25VOUT 80% typ., 82% max. 73.5% typ., 75.5% max. At 5VIN, 0.9VOUT Temperature Coefficient 0.02%/C Absolute Maximum Ratings Storage Temperature -55 to +125 C Lead Temperature +300C, 10 seconds maximum Absolute maximums are stress ratings. Exposure of devices to any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those listed in the Performance/Functional Specifications Table is not implied nor recommended. Ordering Guide Model Number Mounting Single Inline Package (vertical), non-RoHS Switching Frequency 550kHz min., 700kHz max. DDR-9-W3 Line Regulation (VIN = min. to max.) 0.75% DDR-9-W3-C Single Inline Package (vertical), RoHS compliant Load Regulation (VIN = min. to max.) 1.5% DDR-9-W3H Horizontal mount, non-RoHS DDR-9-W3H-C Horizontal mounting, RoHS compliant Dynamic Characteristics Output Slew Rate 40 Amps/sec Load Step, 0 to 9A 175mV, peak deviation Load Step Settling Time, 0 to 9A 200sec Ripple and Noise, 20 MHz bandwidth 40mVp-p, typical 60mVp-p, maximum Turn-On Time (Remote On/Off or VIN to VOUT regulated) 5.5msec MDC_DDR Series.B03 Page 3 of 5 DDR Series 9A Active Power Power Terminator for DDR Memories Typical Performance Curves $$2 7 %FFICIENCY VS ,OAD #URRENT #URRENT 3OURCING -ODE 6/54 6 $$2 7 %FFICIENCY VS ,OAD #URRENT #URRENT 3OURCING -ODE 6/54 6 %FFICIENCY %FFICIENCY 6). 6 6). 6 6). 6 6). 6 DDR-9-W3 Efficiency vs. Load Current (Current Sinking Mode, VOUT = 0.9V) DDR-9-W3 Efficiency vs. Load Current (Current Sinking Mode, VOUT = 1.25V) 86 89 84 87 82 85 80 Efficiency (%) Efficiency (%) ,OAD #URRENT !MPS ,OAD #URRENT !MPS VIN = 3.3V 78 76 VIN = 3.3V 81 79 VIN = 5V 74 83 VIN = 5V 77 72 70 75 -1 -3 -5 Load Current (Amps) -7 -9 -1 -3 -5 -7 -9 Load Current (Amps) MDC_DDR Series.B03 Page 4 of 5 DDR Series 9A Active Power Power Terminator for DDR Memories Typical Performance Curves DDR-9-W3 Maximum Current Temperature Derating (3.3VIN, 1.25VOUT, Current Sourcing Mode) 10 10 9 9 8 8 Output Current (Amps) Output Current (Amps) DDR-9-W3 Maximum Current Temperature Derating (3.3VIN, 0.9VOUT, Current Sourcing Mode) 7 6 0 lfm Airflow 100 lfm 5 200 lfm 4 300 lfm 3 400 lfm 2 7 6 0 lfm Airflow 100 lfm 5 200 lfm 4 300 lfm 3 400 lfm 2 1 1 0 -40 0 15 25 35 45 55 65 75 85 95 105 115 0 -40 125 0 15 25 35 45 Ambient Temperature (C) 10 10 9 9 8 8 7 0 lfm Airflow 100 lfm 5 200 lfm 4 300 lfm 3 400 lfm 2 75 85 95 105 115 125 105 115 125 7 0 lfm Airflow 6 100 lfm 5 200 lfm 4 300 lfm 3 400 lfm 2 1 0 -40 65 DDR-9-W3 Maximum Current Temperature Derating (5VIN, 1.25VOUT, Current Sourcing Mode) Output Current (Amps) Output Current (Amps) DDR-9-W3 Maximum Current Temperature Derating (5VIN, 0.9VOUT, Current Sourcing Mode) 6 55 Ambient Temperature (C) 1 0 15 25 35 45 55 65 75 85 95 Ambient Temperature (C) Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. ISO 9001 and 14001 REGISTERED 105 115 125 0 -40 0 15 25 35 45 55 65 75 85 95 Ambient Temperature (C) This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to: http://www.murata-ps.com/requirements/ Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. (c) 2012 Murata Power Solutions, Inc. www.murata-ps.com/support MDC_DDR Series.B03 Page 5 of 5