Not Recommended for New Designs Quiet-Power QPI-21 S CUNRTLS Active EMI Input Module for 48 Vdc Bus Product Description Features 45 dB CM attenuation at 250 KHz (50 ) The QPI-21 active EMI lter attenuates conducted common- mode (CM) and differential-mode (DM) noise o ver the 80 dB DM attenuation at 250 KHz (50 ) CISPR22 frequency range of 150 kHz to 30 MHz. The product 80 Vdc (max input) is designed for use in 48 Vdc bus (36 76 Vdc) systems, with 100 Vdc surge 100 ms 100 Vdc surge capability. The QPI-21s 14 A rating supports 1,500 Vdc hipot hold off to shield plane multiple DC-DC converter loads up to an ambient temperature of 65C without de-rating. Designed for the 14 A rating telecom and ITE bus range, the QPI-21 supports the PICMG 25.3 x 25.3 x 5.0 mm Lidded SiP (System-in-Package) 3.0 specication for ltering system boards to the EN55022 24.9 x 24.9 x 4.4 mm Open-frame SiP Class B limits. Low profile LGA package In comparison to passive solutions, the use of active ltering -40 to +125C Ambient temperature (see Figure 14) reduces component size and therefore reduces the overall package size. The Picor QPI-21 smaller size saves valuable Efficiency >99% board real estate and the reduced height enhances airow. Connect in series for higher attenuation The QPI-21 is available as a lidded or an open-frame SiP Pads for additional X filtering capacitance (System-in-Package) module with LGA mounting. Evaluation cTVus approved to UL/CSA 60950-1 and EN 60950-1 boards are available to allow for quick in-circuit testing of the CE marked to the LVD and RoHS Recast Directive QPI-21LZ within an existing system design. as applicable Applications QuietPower ATCA blades QPI-21LZ Telecom base stations IBA & distributed power U.S. PATENT NO. 6,898,092 Network switches and routers 2 Figure 1 QPI-21LZ (~1 in area) Optical line-cards TD-SCMA wireless infrastructure Typical Applications CX1 XY+ XY- BUS+ BUS+ QPI+ IN+ OUT+ CIN CB1 SENSE+ PC SC LOAD PR BUS- BUS- QPI- SENSE- Shield IN- OUT- CY1 CY2 CY3 CY4 Chassis/Shield Shield Plane b Figure 2 Typical QPI-21 circuit with a Vicor brick converter. Optional X (CX1) filter capacitor shown. b CB1, CX1 capacitors, referenced in all schematics, are a 47uF electrolytic United Chemi-Con EMVE101ARA470MKE0S or equivalent. Quiet-Power Rev 1.5 vicorpower.com 800 927.9474 Page 1 of 15 08/2015QPI-21 Not Recommended for New Designs Order Information Part Number Part Number c QPI-21LZ QPI-21 LGA Package, RoHS Compliant QPI-21LZ-01 QPI-21 LGA Package, RoHS Compliant, open frame package Evaluation Board Also Available A QPI-21LZ mounted on a carrier board designed for use with DOSA compliant footprint dc-dc converters. Screw terminal blocks to QPI-21-CB1 allow for easy connection into an existing system. Absolute Maximum Ratings Exceeding these parameters may result in permanent damage to the product. CY1 to CY4, referenced in all schematics, are 4.7nF hi-voltage safety capacitors Vishay VY1472M63Y5UQ63V0 or equivalent. CIN is the converter manufacturers recommended value for input capacitor. Name Rating Input Voltage, BUS+ to BUS-, continuous -80 to 80 Vdc Input Voltage, BUS+ to BUS-, 100 ms transient -100 to 100 Vdc BUS+/ BUS- to Shield pads, hi-pot -1500 to 1500 Vdc Input to output current, continuous 25C T 14 Adc A Input to output current, 10 seconds 25C T 20 Adc A d Power dissipation, 65C T , 14 A 2.9 W A Operating temperature - T -40 to 125C A d Thermal resistance - R , using PCB layout in Figure 24 20C/W J-A d Thermal resistance - R 8C/W J-PCB Storage temperature, JEDEC Standard J-STD-033B -55 to 125C Reflow temperature, 20 s exposure 245C ESD, Human body model (HBM) -2000 to 2000 V Electrical Characteristics Parameter limits apply over the operating temp. range, unless otherwise noted. Parameter Conditions Min Typ Max Unit d BUS+ to BUS- input range Measured at 14 A, 65C ambient temperature 30 80 Vdc d BUS+ to QPI+ voltage drop Measured at 14 A, 65C ambient temperature 156 mVdc d BUS- to QPI- voltage drop Measured at 14 A, 65C ambient temperature 50 mVdc Common mode attenuation VBUS = 48 V, Frequency = 250 KHz, line impedance = 50 45 dB Differential mode attenuation VBUS = 48 V, Frequency = 250 KHz, line impedance = 50 80 dB Input bias current at 80 V Input current from BUS+ to BUS- 8 mA c QPI-21LZ is a non-hermetically sealed package. Please read the Post Solder Cleaning section on Page 14. d See Figure 14 for the current de-rating curve. Quiet-Power Rev 1.5 vicorpower.com 800 927.9474 Page 2 of 15 08/2015