QD48 Dual Quarter Brick Family DC-DC Converter Data Sheet The new QD48 Family of dual output, 48 V input, DC-DC converters from Power-One offers unprecedented performance in a quarter brick package by providing two independently regulated high current outputs. This is accomplished by the use of patent pending circuit and packaging techniques to achieve ultra-high efficiency, excellent thermal performance and a very low body profile. In telecommunications applications the QD48 converters provide up to 15 A per channel simultaneously - 30 A total with thermal performance far exceeding existing dual quarter bricks and comparable to dual half bricks. Unique to quarter bricks, the QD48 converters utilize independent power trains and control functions for each output, allowing very tight output voltage regulation and very low channel interference. In some applications they can be used to replace two single-output quarter bricks. Low body profile and the preclusion of heatsinks minimize airflow shadowing, thus enhancing cooling for downstream devices. The use of 100% surface-mount technologies for assembly, coupled with Power-One's advanced electric and thermal circuitry and packaging, result in a product with extremely high reliability. The QD48 family provides any combination of standard voltages from 5.0 V to 1.2 V in an industry standard seven-pin package. Outputs can be trimmed from -10% to +10% of the nominal output voltage, thus providing outstanding design flexibility. The QD48 family is designed to be a drop-in replacement for existing dual designs, and utilizes a common trim function for both outputs. The converters are also available in a surface mount package. Inclusion of this new converter in new designs can result in a significant reliability improvement over other available duals because of its optimized thermal efficiency. Telecommunications * Data communications * Wireless * Servers NOV 11, 2003 revised to NOV 20, 2006 Features * * * * * * * * * * * * * * * * * * * Applications * QD48S Converter Page 1 of 3 RoHS lead-free solder and lead-solder-exempted products are available Two independently regulated outputs in any combination of voltages from 1.2 V to 5.0 V Simultaneously delivers 15 A per output from 1.2 V to 3.3 V; 10 A for 5 V output Minimal cross-channel interference Can replace two single-output quarter bricks High efficiency - no heat sink required High reliability On-board differential input LC- filter Start-up into pre-biased outputs No minimum load required on either output Available in through-hole and SM packages Industry-standard pinout Industry-standard footprint: 1.45" x 2.30" Low profile: 0.26" [6.6 mm] Low weight: 1 oz [28 g] typical Meets Basic Insulation requirements of EN60950 Withstands 100 V input transient for 100 ms Positive or negative logic ON/OFF referenced to input Fixed-frequency operation Both outputs trimmed via common external trim resistor, range: +10%/-10% of VNOM for both outputs * UL 60950 recognized in US and Canada and DEMKO certified per IEC/EN 60950 * Meets FCC Class B and IEC/EN 55022 Class B conducted requirements with external filter www.power-one.com QD48 Dual Quarter Brick Family DC-DC Converter Data Sheet Physical Information QD48S Platform Notes * * * * * 7 1 All dimensions are in inches [mm] Connector Material: Copper Connector Finish: Gold over Nickel Module Weight: 1 oz [28 g] typical Recommended surface mount pads: Min. 0.080" X 0.112" Max. 0.092"X 0.124" 6 2 TOP VIEW 5 3 4 Pin Connections Pin # Function SIDE VIEW QD48S Pinout (Surface mount) Height Option A B C D Vin (+) ON/OFF Vin (-) VOUT1(+) RTN [Vo1(-) +Vo2(-)] TRIM 7 VOUT2 (+) [HT] (Max. Height) +0.000 [0.00] - 0.038 [-0.97] 0.303 [7.69] 0.336 [8.53] 0.500 [12.70] 0.400 [10.16] [CL] (Min. Clearance) +0.016 [+0.41] -0.000 [-0.00] 0.030 [0.77] 0.063 [1.60] 0.227 [5.77] 0.127 [3.23] 7 1 6 2 1 2 3 4 5 6 Pin Option TOP VIEW 5 3 4 A B C SIDE VIEW 0.005 [0.13] 0.188 [4.77] 0.145 [3.68] 0.110 [2.79] QD48T Platform Notes * * * * QD48T Pinout (Through-hole) NOV 11, 2003 revised to NOV 20, 2006 PL Pin Length * Page 2 of 3 All dimensions are in inches [mm] All pins are 0.040"[1.02] diameter with 0.078" [1.98] shoulder Pin material: Brass Pin Finish: Tin/Lead over Nickel Pin Length: Options shown on page 3 Module Weight: 1 oz [28 g] typical www.power-one.com QD48 Dual Quarter Brick Family DC-DC Converter Data Sheet Converter Part Numbering Scheme Product Series Input Voltage Mounting Scheme Output Voltage 1 (VOUT1 ) Output Voltage 2 (VOUT2) QD 48 S 025 033 S Surface Mount 012 1.2 V 015 1.5 V 018 1.8 V 020 2.0 V 025 2.5 V 033 3.3 V 015 1.5 V 018 1.8 V 020 2.0 V 025 2.5 V 033 3.3 V 050 5.0 V Dual QuarterBrick Format 36-75 V T Throughhole - ON/OFF Logic Maximum Height [HT] Pin Length [PL] Special Features N S 0 0 SMT S 0.273" SMT 0 0.00" Through hole A 0.303" B 0.336" C 0.500" D 0.400" Through hole A 0.188" B 0.145" C 0.110" N Negative P Positive Note: Always specify VOUT2 as the higher of the two output voltages. 0 STD The example above describes P/N QD48S025033-NS00: 36-75 V input, dual output, surface mounting, 2.5 V and 3.3 V outputs @ 15 A each, negative ON/OFF logic. Please consult factory regarding availability of a specific version. RoHS Ordering Information: * No RoHS suffix character is required for lead-solder-exemption compliance. * For RoHS compliance to all six substances, add the letter "G" as the last letter of the part number. NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not designed, intended for use in, or authorized for use as components in life support systems, equipment used in hazardous environments, or nuclear control systems without the express written consent of the respective divisional president of Power-One, Inc. TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice. NOV 11, 2003 revised to NOV 20, 2006 Page 3 of 3 www.power-one.com