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Details, datasheet, quote on part number:QPI-1L
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| Part: | QPI-1L |
| Category: | RF & Microwaves => Filters |
| Description: | The QPI-1 Active Emi Filter Provides Conducted<<<>>>common-mode (CM) And Differential-mode (DM)<<<>>>attenuation From 150 KHZ to 30 Mhz. Active<<<>>>filtering Provides Superior Differential Attenuation<<<>>>at Low Frequencies. The Product is Designed For Use<<<>>>on a Nominal 48 Vdc, (36-76 Vdc) Bus. The Qpi S 12A<<<>>>rating Supports Multiple DC-DC Converters Drawing<<<>>>up to 576W at Nominal Input Voltage And 60 C PCB<<<>>>interface Temperature. |
| Company: | |
| Datasheet: | Download QPI-1L datasheet File size : 148 kB |
| Request For quote: | Find where to buy QPI-1L
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Datasheet text preview:
P R E L I M I N A RY
QuietPowerTM
QPI-1L
QPI-1, 12 Amp Active EMI Filter for DC-DC Converters
Description
The QPI-1 active EMI filter provides conducted common-mode (CM) and differential-mode (DM) attenuation from 150 kHz to 30 MHz. Active filtering provides superior differential attenuation at low frequencies. The product is designed for use on a nominal 48 Vdc, (36-76 Vdc) bus. The QPI's 12A rating supports multiple DC-DC converters drawing up to 576W at nominal input voltage and 60°C PCB interface temperature. Active filtering improves the transient response of the filtered DC-DC converter(s) by virtually eliminating ringing on the input in response to load transients, as is often seen in passive filter solutions. Units can be connected in series for higher attenuation, or in parallel for higher current. The QPI-1 is available in a 1.0" x 1.0"x 0.2" SiP (System-in-Package) with LGA mounting. QPI-EVAL1 kits are available with a mounted QPI-1 and screw or pin terminal options for vertical and a second layer (mezzanine board) horizontal mounting. Check www.picorpower.com for the evaluation board data sheet.
Features QPI-1
· >40 dB CM attenuation at 500 kHz · >80 dB DM attenuation at 500 kHz · 80 Vdc (max input) · 12 Amp rating · 100 Vdc surge 100 ms · 1,500 Vdc Hi-pot hold off to Shield Plane · 1.0" x 1.0" x 0.2" SiP (System-in-Package) · SMT Land Grid Array · -40° to +100°C PCB temperature (See Fig. 5) · Active filtering improves transient response · Efficiency 99% · Parallelable for higher currents · Connect in series for higher attenuation · Agency Approvals Pending
Typical Application
SUPPLY+
QPI Performance
BUS+ Cb* 47µF BUS-
QPI+
QPI-1
QPI-
Cc* 10µF
SHIELD PLANE SUPPLY-
TO CHASSIS OR SAFETY COMMON
Y-CAP/SHIELD PLANE
*NOTE: Cb REQUIRED FOR HIGH TRANSIENT LOADS Cc IS CERAMIC, LOW ESR & ESL
Figure 1 - QPI-1 circuit on input bus. Picor Corporation · www.picorpower.com
Converter
Figure 2 - Insertion loss curves showing common-mode and differential -mode attenuation. QPI-1 Data Sheet Rev. 1.3 Page 1 of 4
P R E L I M I N A RY
Absolute Maximum Ratings Exceeding these parameters may result in permanent damage to the product.
Pins BUS+ to BUSBUS+ to BUSBUS+/BUS- to Shield Plane QPI+ to QPIPackage Package Package Package Package Package Package All Pins Parameter Input voltage Input voltage BUS Inputs to Shield Hipot Input to output current Power Dissipation Operating Temperature Thermal Resistance Junction Temperature Thermal Resistance Storage Temperature Re-flow Temperature ESD 20 second exposure @ HBM Notes Continuous 100ms Transient Per test std Continuous @ 25°C VBUS = 48V, IBUS = 12 Adc, 25°C PCB to QPI Interface Free Air Internal @ Pdmax and 15°C/W PCB Layout Fig. 6 -40 -40 Min -0.5 -0.5 Max 80 100 +/-1500 12 4.0 100 50 160 15 125 212 +/-2 Units Vdc Vdc Vdc Adc W °C °C/W °C °C/W °C °C kV
Note 1: Refer to Figure 5 for current derating curve.
Electrical Characteristics Parameter limits apply over the operating temp. range unless otherwise noted.
Parameter BUS+ to BUS- Input Range BUS+ to QPI+ Voltage Drop BUS- to QPI- Voltage Drop Common Mode Insertion Loss Differential Mode Insertion Loss Input Bias Current at 80 Volts
THERM1 9 8 QPI+ 7 6 SHIELD 5 4 QPI14 15 16 BUSTHERM2 11 12 13 BUS+ 2 1
Notes Measured at 10A (1) Measured at 10A (1) Measured at 10A (1) VBUS=48V Frequency=500kHz VBUS=48V Frequency=500kHz Input current from BUS+ to BUS-
Min 30
Typ -300 20 45 90 20
Max 80
Units Vdc mVdc mVdc dB dB mA
QPI-1: (bottom view)
BUS+ BUSQPI+ QPISHIELD THERM1 THERM2 12,13,14 1,16,17 7,8,9 2,3,4 5,6 10 11
10
3
Pad Designations
QPI-IL (LGA)
Pin Description
1, 15, 16 BUS- Negative bus voltage 2 - 4 QPI Negative input to the converter 10 THERM1 Internal connection must be electrically floating but maximize copper landing for heat sinking 11 THERM2 Internal connection must be electrically floating but maximize copper landing for heat sinking 12 - 14 BUS+ Positive bus voltage
Picor Corporation · www.picorpower.com QPI-1 Data Sheet Rev. 1.3 Page 2 of 4
5, 6 Shield The shield connects to the converter shield and Y capacitor common point 7- 9 QPI+ Positive input to the converter
P R E L I M I N A RY
Description
The QPI-1 is an active EMI filter providing commonmode and differential-mode noise attenuation from 150 kHz to 30 MHz. Designed for the telecom bus voltage range, the QPI supports the PICMG® 3.0 specification for filtering system boards to the EN 55022 limits. The surface mount LGA, 1.0" x1.0" x 0.2"package saves board space and eases manufacturing by eliminating through-hole assembly. The input of the converter will not exhibit the stepload ringing associated with a passive design's resonant frequencies and Qs. The QPI-1 attenuates noise at all frequencies in the EN55022 band, eliminating the empirical design work of passive approaches and the uncertainty of whether a passive design will actually work with the converters. The QPI-EVAL1 board allows vertical through-hole mounting, freeing up additional PCB real estate as well as providing horizontal mounting pins and screw terminal connection options. The evaluation board offers a plug-in board-level solution to evaluate the QPI-1 in a power system to solve EMI problems at the board and system level. Figure 4 shows the effect of inserting the QPI-1 filter between the DC bus and the converter input under the same test conditions used in Figure 3. The results show the QPI-1 is effective in reducing the noise spectrum well below the EN 55022 quasipeak detection limit. Using the quasi-peak detection measurement mode would lower the amplitudes by the error factor this method introduces.
Figure 4 Conducted EMI profile of a DC-DC Converter with QPI-1.
Thermal Considerations
The current derating curve shown in Figure 5 should be used when the PCB temperature to which the QPI-1 is mounted exceeds 60°C. Refer to Figure 6 for a PCB layout recommendation. For example, the QPI-1, will filter 10A or up to 480W of power from a 48 Vdc bus with an 80°C PCB interface temperature. It will provide filtering for more than twice the 200W per board limit in the PICMG® 3.0 specification.
Test Example
Figure 3 shows the noise spectrum for a typical converter compared the EN 55022 quasi-peak detection limit taken using the standard measurement conditions in the peak detect mode for a conducted EMI test.
14 12 QPI Current (A) 10 8 6 4 2 0 0 10 20 30 40 50 60 70 80 90 100
PCB to QPI Interface Temperature (Deg. C)
Figure 3 Conducted EMI profile of a DC-DC Converter without filter.
Figure 5 QPI-1 Current derating curve. QPI-1 Data Sheet Rev. 1.3 Page 3 of 4
Picor Corporation · www.picorpower.com
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