Crane Aerospace & Electronics Power Solutions Maximum Flexible Power (MFP) Single Output Point of Load Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter maximum Flexible Power (MFP) in a Single 7 Amp point of load. A Use-Anywhere Power solution for digital and non-digital systems. Features No external components required • • • • • • • • • • • • • • • Operating temperature -70° to +150°C Cold start at -90°C Up to 92% efficiency, flat down to 30% load Qualified up to MIL-PRF-38534 Class K Radiation hardness assurance (RHA) up to level F, 300 kRad(Si) TID, available on request Input voltage range 3.0 to 6.0 VDC Input transient survivability to 15 VIN for up to 1 sec. Inhibit and sync functions Current monitoring Current sharing pin for parallel operation Five pin-selectable, preset voltages: -- 0.64, 0.8, 1.6, 2.5 and 3.3 -- Output voltage continuously adjustable from 0.64 to 3.5 V with resistors Indefinite output short circuit protection Adjustable start-up sequencing Remote sense and voltage margining Internal solid state power switch provides many benefits including inrush current limiting History of proven performance Interpoint, a Crane Co. Company, was issued its first standard microcircuit drawing (SMD) for a Class H hybrid in 1992. Our first Class K hybrid SMD was issued in 1997 and we were one of the first companies to certify manufacturing to Class K. Our Redmond site has a DSCC approved Radiation Hardness Assurance (RHA) plan. Our products are on DSCC SMDs with RHA “P”, “R,” or “F” code for 30, 100 and 300 kRad(Si), respectively. Crane Aerospace & Electronics Electronics Group (Interpoint Brand) PO Box 97005 • Redmond WA 98073-9705 425.882.3100 • [email protected] www.craneae.com/interpoint Description The MFP Series™ of DC/DC converters do not require any external components to achieve all specified performance levels. They are a high-reliability, high-efficiency point of load converter for use with a 3.3 VDC input bus or a 5 VDC input bus. The MFP0507S model has the flexibility to be set for any output voltage from 0.64 VDC to 3.5 VDC. The converter operates from an input of 3.0 to 6.0 VIN with an undervoltage shutdown at 2.75 V, an overvoltage shutdown of 8.5 V and up to a 15 V transient for up to 1 second. The non-isolated, feature-rich MFP uses a Buck converter design with synchronous rectification. The design allows the unit to operate synchronously to no output load, ensuring high efficiency at the lightest loads without switching off the synchronous devices. Important features include a solid state switch, inrush current limiting, synchronization with an external system clock and the ability to current share allowing multiple devices to supply a common load. The MFP includes an internal house keeping supply that is active at inputs as low as 2 VDC and provides a boosted and regulated voltage supply for internal use. This internal supply is one of the reasons that this product can provide full power at very high efficiency at input voltages as low as 3 VDC. No external power source or external bias is required. The MFP converters are designed for the large, fast transient load currents typical to digital loads. See Figure 4 for a typical connection diagram. The MFP Series is intended to be powered by a fully regulated power source. US Patents Interpoint converters may use one or more of the following US patents 5,521,807, 5,694,303 and 5,631,822. Page 1 of 19 MFP0507S Technical Preview Rev D - 2010.11.18 Technical Preview: Contains preliminary information Crane Aerospace & Electronics Power Solutions Maximum Flexible Power (MFP) Single Output Point of Load Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter Table of Contents Electrical Characteristics Tables Table 1: Absolute Maximum Ratings . . . . . . . . . . . . . . . . . 3 Table 2: Input Specifications . . . . . . . . . . . . . . . . . . . . . 3 Table 3: Output Specifications . . . . . . . . . . . . . . . . . . . . 4 Figure 1: Efficiencies . . . . . . . . . . . . . . . . . . . . . . . . . 6 Pin Out Table 4: MFP0507S Pin Out . . . . . . . . . . . . . . . . . . . . . 7 Model Numbering Key . . . . . . . . . . . . . . . . . . . . . . . . 7 Mechanical Information . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 2: MFP0507S Case Dimensions . . . . . . . . . . . . . . . . 8 Thermal and Mounting Considerations . . . . . . . . . . . . . . . . . . 9 Figure 3: Infrared Image of MFP . . . . . . . . . . . . . . . . . . . 9 Table 5: Chomeric Material Specifications, Thermal Pad . . . . . . 10 Pin Functions and Applications Figure 4: Typical Connection Diagram . . . . . . . . . . . . . . . 11 Pin 1: ENABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Pin 4: SYNC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Table 6: ENABLE Capacitance for Sequencing . . . . . . . . 12 Figure 5: ENABLE and SYNC Equivalent Circuit . . . . . . . . . 12 Pins 2 and 3: +V IN and VIN Common . . . . . . . . . . . . . . . . 13 Figure 6: Input Voltage vs Maximum Output Voltage . . . . . . 13 Pin 5: Remote SENSE . . . . . . . . . . . . . . . . . . . . . . . 14 Figure 7: SENSE Pin Voltage Margining . . . . . . . . . . . . . 14 Pin 6: SHARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Figure 8: Typical Share Connection . . . . . . . . . . . . . . 15 Pins 7 and 8: TRIM A and TRIM B . . . . . . . . . . . . . . . . . 16 Table 7: User Configurable Output Voltages . . . . . . . . . . 16 Pins 9 and 10: VOUT Common and +VOUT . . . . . . . . . . . . . 16 Figure 9: Maximum Rated Output Current . . . . . . . . . . . 16 Performance Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Figures 10 and 11: Input Ripple Current . . . . . . . . . . . . . . . 17 Figures 12 and 13: Output Ripple Voltage . . . . . . . . . . . . . 17 Figures 14 and 15: Load Transient Response . . . . . . . . . . . 17 Figure 16: SHARE as Monitor for Output Current . . . . . . . . . 17 Figure 17: Operating Frequency vs Temperature and VIN . . . . . 17 Screening Tables Screening Table 1: Element Evaluation . . . . . . . . . . . . . . . 18 Screening Table 2: Environmental Screening . . . . . . . . . . . www.craneae.com/interpoint Page 2 of 19 MFP0507S Technical Preview Rev D - 2010.11.18 Technical Preview: Contains preliminary information 19 Crane Aerospace & Electronics Power Solutions Maximum Flexible Power (MFP) Single Output Point of Load Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter Electrical Characteristics: -55 to +125°C TC, 5 VDC VIN (VIN NOM), 100% load, free run, unless otherwise specified. Table 1: Absolute Maximum Ratings Parameter Condition Symbol Min Typ Max Units Operating Temperature All -70 — +150 °C Storage Temperature All TC — +155 °C — TSTG -90 Maximum Weight — — — 23 grams — — — 300 °C Lead Soldering Temperature 1 10 seconds max Table 1, Note 1. Caution: Heat from reflow or wave soldering may damage the device. Solder pins individually with heat application not exceeding 300°C for 10 seconds per pin. TAble 2: Input SpecificationS Parameter Input Voltage Range Input Under Voltage Lockout Input Current State Condition External Synchronization Switching Frequency 8.5 6.0 6 VIN TRAN 8.5 — 15 V — 6 — 2.2 2.5 3.0 VDC VIN = 3 V — IIN — 180 230 110 140 — IIN — VIN = 3 V IIN — 105 120 IIN — 50 65 1.6 — 2.3 2.2 — — VPIN 1 — — 1.5 IPIN 1 — — 4 — — VIN = 6 V — VIN = 6 V — Pin 1 Open 5 VIN 3 to 6 V ENABLE Pin Current Unit Disabled 5 VIN 3 to 6 V VIN VPIN 1 Standard Frequency Range — 5 — 270 — 330 Extended Frequency Range 2 — — — 270 — 600 VDC mA VDC mA kHz Amplitude — — — 3.0 5.0 6.0 V Duty Cycle — — — 40 50 60 % Frequency Source Impedance — — — — — 1.5 kOhms -55 to +125°C — 17 — 280 — 330 -70 to +150°C — 17 — 270 — 340 Table 2, Notes: 1. 50 microsecond minimum transition time. 2. Efficiency may be reduced by up to 2% at full load due to switching losses. www.craneae.com/interpoint Units 5.0 Transient 1 Threshold Unit Disabled Max 3.3 or 5.0 6 Threshold Unit Enabled Typ 0 6 — Open Circuit Voltage Min 3.0 — Operating No Load Symbol VIN Continuous Disabled Enable/Disable (Pin 1) Input Figure Page 3 of 19 MFP0507S Technical Preview Rev D - 2010.11.18 Technical Preview: Contains preliminary information kHz Crane Aerospace & Electronics Power Solutions Maximum Flexible Power (MFP) Single Output Point of Load Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter Electrical Characteristics: -55 to +125°C TC, 5 VDC VIN (VIN NOM), 100% load, free run, unless otherwise specified. TAble 2: Input SpecificationS Parameter (Continued) State Power Dissipation Condition No Load Full Load — Fault Power Output Short Input Ripple Current V1 (0.8V) VIN = 3 20 Hz - 20 MHz V1 (0.8V) VIN = 6 V V4 (3.3V) 20 Hz - 20 MHz IRMS Average Figure Symbol Min — — — — 0.7 — — — 1.24 1.83 — — — — 2.5 — 200 — — 200 _ — 200 — — 60 — mARMS Min Typ Max Units — — — IIN-RIP — — Figure Symbol Typ Max Units W mA p-p TAble 3: OUTPUT SpecificationS Parameter Operating Voltage Accuracy State Condition V1 0.8, 25°C 0.778 V1 0.8, -55 to +125°C 4 V1 0.8, -70 to +150°C Callout 1 V2 1.6, -55 to +125°C 4 V2 1.6, 25°C V2 1.6, -70 to +150°C 50% Load V3 2.5, -55 to +125°C Callout 1 V4 3.3, 25°C V4 3.3, -55 to +125°C 4 V4 3.3, -70 to +150°C V1, V2, V3, V4 Line Regulation -70 to +150°C VOUT -55 to +125°C Total Regulation VOUT (Calculated) -55 to +125°C V 1, V 2, V 3, V 4 www.craneae.com/interpoint Callout 1 V2 V3 1.550 1.634 1.600 — VIN 3 to 6 V — 1.666 2.548 2.500 50% Load to Full — 2.403 2.598 3.360 — 3.300 3.175 -70 to +150°C Page 4 of 19 MFP0507S Technical Preview Rev D - 2010.11.18 Technical Preview: Contains preliminary information VDC VDC 20 — — — 3.393 VDC 3.426 20 mV TBD — VR TOTAL 2.573 3.241 VR LOAD VR LINE 1.650 1.534 2.428 VDC 0.838 — IO 50% Load to Full 0.830 2.453 3.208 25°C -70 to +150°C 0.800 0.762 V4 25°C -55 to +125°C V1, V2, V3, V4 Callout 1 4 V3 2.5, -70 to +150°C VOUT 0.770 1.566 V3 2.5, 25°C Load Regulation V1 0.822 20 — — 20 mV TBD -3.00 ±1.5 3.00 -4.00 ±2.5 4.00 % Crane Aerospace & Electronics Power Solutions Maximum Flexible Power (MFP) Single Output Point of Load Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter Electrical Characteristics: -55 to +125°C TC, 5 VDC VIN (VIN NOM), 100% load, free run, unless otherwise specified. TAble 3: OUTPUT SpecificationS (Continued) Parameter State Output Ripple 25°C and Noise V1, V2, V3, V4 Output Current Condition -55 to +125°C 20 Hz to 20 MHz 12 and 13 -70 to +150°C Symbol VOUT-RIP V1 0.8, -55 to +125°C V1 0.8, -70 to +150°C V2 1.6, -55 to +125°C V2 1.6, -70 to +150°C Output Power Figure VIN = 3 to 6 V 9 IOUT — 30 60 — 40 80 0 — 7.0 0 — 6.0 0 — 6.4 — 4.0 — 5.0 V3 2.5, -70 to +150°C 0 — 4.0 V4 3.3, -55 to +125°C 0 — 5.0 V4 3.3, -70 to +150°C 0 — 4.0 0 — 5.6 V1 0.8, -70 to +150°C 0 — 4.8 V1 0.8, -55 to +125°C 9 VIN = 3 to 6 V POUT 0 — 10.2 0 — 6.4 0 — 12.5 V3 2.5, -70 to +150°C 0 — 10.0 0 — 16.5 V4 3.3, -70 to +150°C 0 — 13.2 — — 5000 66.7 73 — 63.5 — — — — — 80.4 84 — 78.4 — — V4 3.3, -55 to +125°C — — V1 0.8, 25°C V1 0.8, -55 to +125°C — 1 V1 0.8, -70 to +150°C V2 1.6, 25°C V2 1.6, -55 to +125°C V2 1.6, -70 to +150°C V3 2.5, 25°C V3 2.5, -55 to +125°C 1 — 1 V3 2.5, -70 to +150°C V4 3.3, 25°C V4 3.3, -55 to +125°C 1 V4 3.3, -70 to +150°C www.craneae.com/interpoint 50 0 V3 2.5, -55 to +125°C Efficiency Max 25 0 V2 1.6, -55 to +125°C External Load Typ — V3 2.5, -55 to +125°C V2 1.6, -70 to +150°C Capacitance Min — EFF1 EFF2 EFF3 EFF4 Page 5 of 19 MFP0507S Technical Preview Rev D - 2010.11.18 Technical Preview: Contains preliminary information — — — 86.8 89 — 85.4 — — — — — 89.5 92 — 88.5 — — — — — Units mV p-p A W µF % % % % Crane Aerospace & Electronics Power Solutions Maximum Flexible Power (MFP) Single Output Point of Load Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter Electrical Characteristics: -55 to +125°C TC, 5 VDC VIN (VIN NOM), 100% load, free run, unless otherwise specified. TAble 3: OUTPUT SpecificationS (Continued) Parameter State Turn On Peak Enable Deviation V1, V2, V3, V4 Turn On Settling Time Condition Figure Symbol Min Typ Max — — — — 50 — 50 Step Start VIN 0 to VIN-NOM Release of Inhibit/Enable IIN 0 to Max Step Start VIN = 0 to 6 V VIN 3.3V (settle to 2%) IO 50 - 100% 14 and 15 Load Transient Peak Deviation VIN 3.3V (settle to 2%) IO 50 - 100% 14 and 15 V1, V2, V3, V4 Output Voltage Trim V1, V2, V3, V4 VIN 5V (settle to 2%) @ 1 A / µs to 2%, V1, V2, V3, V4 Output Load Transient Response VIN 5V (settle to 2%) — @ 1 A / µs Positive Output difference from VOUT to VSENSE Voltage Margining Positive Output difference from VOUT to VSENSE Sequence Time Delay — — 4 7 — — 4 7 — — — 250 — — — 250 — — — 250 — — 250 mV pk ms µs mV pk See Table 7 in the Pin 7 and 8, TRIM section — Remote Sense — — Units — 4 — — — 0.20 VDC — — — — — 0.20 VDC See Table 6 in the PIn 1, ENABLE section 95 90 85 5 VIN 3.3 VOUT 5 VIN 2.5 VOUT 3.3 VIN 1.6VOUT 3.3 VIN 0.8 VOUT Efficiency 80 75 Refer to “Table 3: Output Specifications” for maximum output currents. 70 65 60 55 50 0 0.5 1 1.5 2 2.5 3 Output Current 3.5 4 Figure 1: Efficiencies www.craneae.com/interpoint Page 6 of 19 MFP0507S Technical Preview Rev D - 2010.11.18 Technical Preview: Contains preliminary information 4.5 5 Crane Aerospace & Electronics Power Solutions Maximum Flexible Power (MFP) Single Output Point of Load Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter pin Out Pin Number Designation Function If Pin is not Used 1 ENABLE Enable, provides remote turn on and off Leave open 2 +V IN Positive Input Always used 3 V IN COM Input Common Always used 4 SYNC Synchronization Leave open 5 SENSE Sense, voltage drop compensation Connect to + VOUT pin 10 6 SHARE Current Share, parallel operation, or current monitor Leave open 7 TRIM A Preset Output Voltage and Trim See Figure 4 and Table 7 8 TRIM B Preset Output Voltage and Trim See Figure 4 and Table 7 9 V OUT COM Output Common (also SENSE Return) Always used 10 +V OUT Positive Output Always used Table 4: MFP0507S Pin Out model numbering key Maximum Flexible Power Nominal Input Voltage MFP 05 07 S V 1 / KR Output Current Number of Outputs (S = single) Case Option (leave blank for standard case, add V for downleaded case 1 ) Screening and RHA (ST, WT, 883, HP, HR, KP, KR, or KF see screening tables 1 and 2 for more information) Model Numbering Key Note: 1. Downleaded case V is a future option which will be announced when available. www.craneae.com/interpoint Page 7 of 19 MFP0507S Technical Preview Rev D - 2010.11.18 Technical Preview: Contains preliminary information Crane Aerospace & Electronics Power Solutions Maximum Flexible Power (MFP) Single Output Point of Load Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter mechanical Information TOP VIEW CASE D3 MFP Series Single 0.972 (24.69) 1 0.822 (20.88) 2 0.672 (17.07) 0.522 (13.26) 3 10 5 8 9 4 0.372 (9.45) 0.222 ±0.010 (6.54 ±.025) 1.200 max (30.48) 7 6 1.200 max (30.48) Seam seal 0.346 max. (8.79) 0.040 ±0.002 dia. (1.02 ±.05) 0.240 ±0.010 (6.10 ±0.25) Flatness of base: 0.003 inch per inch 11 x 0.190 (4.83) Figure 2: MFP0507S Case Dimensions Size (nominal) •Single 1.195 x 1.195 x 0.340 Materials •Header - Cold Rolled Steel / Nickel •Cover - Kovar/Nickel •Pins - 3:1 Cu Cored alloy 52/Gold over Nickel •Compression glass seal Case dimensions in inches (mm) Tolerance ±0.005 (0.13) for three decimal places. ±0.01 (0.3) for two decimal places unless otherwise specified. Please refer to the numerical dimensions for accuracy. www.craneae.com/interpoint Page 8 of 19 MFP0507S Technical Preview Rev D - 2010.11.18 Technical Preview: Contains preliminary information Crane Aerospace & Electronics Power Solutions Maximum Flexible Power (MFP) Single Output Point of Load Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter Thermal and Mounting Considerations Thermal Considerations The MFP is designed to be mounted close to the pointof-use which, in many cases, may be on a printed circuit board. The high efficiency of the MFP reduces the issues normally associated with the converter’s internal dissipation. The maximum internal dissipation occurs when the product is configured as a 3.3 volt output at full load. This condition will result in a dissipation of not more than 1.83 watts. This dissipation is nearly uniformly distributed over the base area of 1.4 square inches. Full load power loss is largely independent of output voltage, for instance at 0.8 volts and full load the internal power loss maximum is again 1.83 watts. In order to determine the cooling or heat sinking requirements in the application, the maximum product power dissipation should be calculated from the product efficiency and output power. Graphs and tabled values in the specification table can be used to find the efficiency given the input voltage, selected output voltage and output load. The internal dissipation, difference between output and input power, can be calculated from the equation below. where: POUT = output power ɛ = efficiency PDISS = POUT (1 - Many applications will not require special efforts at cooling, however, this depends on ambient temperatures, adjacent components, and other factors. If product cooling is required for safe operation convention and/ or conduction can be used. Thermal considerations require that the base of the MFP be maintained at a safe temperature of less than the maximum rating. All components internal to the MFP are bonded to the metal base of the package. The base is the surface that is important if conduction cooling is used. It is a good practice to bond the device to the PCB or mounting surface with a thermally conductive pad. Such pads provide some degree of conduction cooling to the mounting surface depending on the amount of voiding at the interface. In the case of the side leaded MFP package, this thermal pad will firmly locate the device to the surface so that the lead connections only manage the electrical requirements and not the mechanical requirements. In Figure 3 below, the thermal rise internal to the MFP can be seen to be only 6°C. This low thermal rise gives the end user more flexibility in board design options to meet applicable derating guidelines. ε) / ε F = thermal resistance of converter attachment to board ∆ T = PDISS x F TCASE = TBASE - ∆ T MFP www.craneae.com/interpoint Figure 3: Infrared Image, Full Load with 6 VIN, 3.3 VOUT at Page 9 of 19 MFP0507S Technical Preview Rev D - 2010.11.18 Technical Preview: Contains preliminary information Crane Aerospace & Electronics Power Solutions Maximum Flexible Power (MFP) Single Output Point of Load Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter Thermal and Mounting Considerations (cont.) Mounting Considerations Interpoint recommends Chomeric’s double-sided adhesive materials for attachment of the MFP to a circuit board or metal surface. Because of the MFP’s efficiency the thermal characteristics of the Chomeric materials are not required even though the Chomeric material provides good thermal conductivity. The following information refers to products attached using Chomeric double-sided adhesive. Vibration Testing The MFP was tested in Random vibration using both the T1680 and T404 to mount the units to an aluminum vibration fixture. Testing was performed to the most severe level in MIL-STD-883 Method 2026; Condition 2, Letter K, overall GRMS 51.1, for 15 minutes per axis, 3 axes and passed. No mounting detachment occurred. Application Recommended size for the adhesive tapes is 1.18 x 1.18 inches. Application of the tapes is a matter of peeling the release liners and attaching to the MFP and circuit board respectively. See Chomeric’s data sheets and application notes for details. The T404 material does require higher application pressure. The T1680 material is specifically made for low pressure attachment of hybrids, ceramic and flat packages. Removal Refer to Chomeric’s application notes for Thermattach Tape. Specifications Refer to Table 5: Chomeric Material Specifications for thermal conductivity, temperature range and out-gassing. Table 5: Chomeric Material Specifications Thermal Conductivity Temperature Range Outgassing Data W/m-K °C %TML/%CVCM CHO-THERM 1671 (Note 2) 2.6 -60 to +200 0.76 0.07 Rougher surfaces CHO-THERM T1680 (Note 1) 0.65 -60 to +200 1.27 0.23 Smooth surfaces THERMATTACH T404 (Note 1) 0.4 -30 to +125 None Smooth surfaces Material Table 5, Notes: 1. Chomeric’s Thermattach Tape T404 and Cho-Therm T1680 are two excellent choices for circuit board mounting. Both have a Kapton insulating barrier with pressure sensitive adhesive (PSA) on both sides. www.craneae.com/interpoint Mounting Application 2.Chomerics Cho-Therm 1671 is a good choice for mounting on rougher surfaces. This material has a fiberglass barrier with PSA on one side. It can be obtained with PSA on both sides if needed. Page 10 of 19 MFP0507S Technical Preview Rev D - 2010.11.18 Technical Preview: Contains preliminary information Crane Aerospace & Electronics Power Solutions Maximum Flexible Power (MFP) Single Output Point of Load Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter Pin Functions and Applications 1 EN CT1 + 2 + V IN – 3 V IN COM VIN DC 3 4 SYNC IN + 3.3 V _ Load + 2.5 V _ Load + 1.2 V _ Load V OUT COM 9 TRIM B 8 6 SHARE TRIM A 7 1 MFP Single POL Converter 2 + V IN 3 V IN COM 4 SYNC IN +V OUT 10 V OUT COM 9 5 SENSE TRIM B 8 6 SHARE TRIM A 7 1 EN CT3 MFP Single POL Converter 2 + V IN 3 V IN COM 4 SYNC IN +V OUT 10 V OUT COM 9 5 SENSE TRIM B 8 6 SHARE TRIM A 7 1 EN CT4 12.7 k MFP Single POL Converter 2 2 + V IN IOUT Monitoring 3 V IN COM 4 SYNC IN 5 4 +V OUT 10 5 SENSE 1 EN CT2 MFP Single POL Converter +V OUT 10 + 0.8 V _ Load V OUT COM 9 5 SENSE TRIM B 8 6 SHARE TRIM A 7 External ENABLE Figure 4: Typical Connection Diagram using ENABLE, TRIM, SENSE, For more information: 1 2 Pins 7 and 8, TRIM section 3 Pin 5, Remote SENSE section 4 Pin 1, ENABLE section, sequencing. Table 6 lists CT values. Pin 6, SHARE section and IOUT 5 www.craneae.com/interpoint Page 11 of 19 MFP0507S Technical Preview Rev D - 2010.11.18 Technical Preview: Contains preliminary information Monitoring Crane Aerospace & Electronics Power Solutions Maximum Flexible Power (MFP) Single Output Point of Load Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter Pin Functions and Applications Pin 1: ENABLE Function The MFP provides an enable pin that will allow normal power conversion to occur if left open or unconnected. The ENABLE pin allows remote turn-on and turn-off control of the MFP. Connecting this pin to ground will disable power conversion, resulting in no output voltage and greatly reduced current consumption. The MFP ENABLE function will work with an open collector device connected to the pin or with a logic high voltage from a digital device as long as the logic high voltage is greater than the minimum voltage listed in the specification for enabled operation. The enable pin is active high at > 0.8 V or with a floating input. Sequencing: The start-up of the MFP can be delayed with the addition of an external capacitor connected to the ENABLE pin. This feature is useful in sequencing the start-up of multiple point of load converters in a system requiring a specific startup sequence for various low-voltage loads. The startup delay is roughly equal to 1 millisecond per microfarad of capacitance. More precise external capacitance values can be found in Table 6 where it can be seen that there is a variation in startup delay time as the input voltage varies. The listed delay is from the beginning of application of power to the beginning of internal power conversion. There will be an additional delay as the power converter begins a normal start-up sequence and ramps to final output voltage. Pin 4: SYNC The MFP includes a synchronization feature, a key capability in low noise system design. The internal conversion oscillator can be synchronized with a system clock or with a bus voltage source. The MFP is designed to synchronize with a 300 kHz system but can be synchronized with sources up to 600 kHz, a frequency range used by many DC/DC converters. A synchronized system prevents the generation of low frequency sub harmonics in the audio range. The synchronization input amplitude can range from 3 VDC to 6 VDC. Figure 17 illustrates the relationship between operating frequency, temperature and input voltage. The external synchronization timing cycle can be varied cycle to cycle for systems employing spread-spectrum clocking or for slave sharing clock interleaving. The DC level of the sync pin (pin 4) can be used to detect the state of the input voltage protection switch. UNDER VOLTAGE / OVER VOLTAGE PROTECTION ENABLE 1 2.2 k 22.1 k + V IN 2 Figure 5: ENABLE and SYNC Equivalent Circuit Case V IN COM 10 DC/DC 220 µF 330 µF 9 3 Case V OUT COM Case HOUSEKEEPING 5.11 k SYNC IN 4 +V OUT CONTROL CLOCK Table 6: Enable Capacitance Values for Start-Up Delay Enable Capacitance: Delay from Enable Release to Start of Output rise (25°C) Units CAPACITANCE (CT) 0.22 0.33 0.47 0.68 1.0 1.5 2.2 3.3 4.7 6.8 10 µF VIN 3.3 V 0.8 1.1 1.6 2.2 3.1 4.6 6.7 1.0 14.1 20.2 29.7 ms VIN 5.0 V 0.4 0.5 0.7 0.9 1.3 1.8 2.6 3.9 5.5 7.8 11.4 ms www.craneae.com/interpoint Page 12 of 19 MFP0507S Technical Preview Rev D - 2010.11.18 Technical Preview: Contains preliminary information Crane Aerospace & Electronics Power Solutions Maximum Flexible Power (MFP) Single Output Point of Load Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter Pin Functions and Applications VIN Common Input Voltage The input voltage range for normal operating conditions is 3.0 to 6.0 VDC (Figure 6). For input ripple current see page 17, Figures 10 and 11. The VIN Common pin is connected to VOUT Common and case ground. The input and output should share the same ground plane in the power system design. Additional Input Block Features Input Under and Over Voltage Protection The MFP includes a solid state switch on the input section. This switch opens for fault conditions including input voltages below the minimum and transient voltages above the maximum. The safe operating range includes ground and extends to 8.5 VDC indefinitely and up to 15 volts as a time limited transient. The switch will only close when certain internal conditions are met, including the proper operation of the internal housekeeping supply and a safe input voltage range. No Single Point Failure The solid state switch (SSS) can be used to provide one additional level of reliability: “no single point failure” will result in a connection from input voltages to output loads. The SSS can be opened by grounding of the ENABLE Pin. The status of the SSS can be determined by detecting the voltage on the SYNC pin. A logic low on this pin indicates that the SSS is open. No External Bias Required An internal housekeeping supply that is active at inputs as low as 2 VDC provides a boosted and regulated voltage supply for internal use. This internal supply is one of the reasons that this product can provide full power at very high efficiency at input voltages as low as 3 VDC. No external power source or external bias is required. Input Reflected Noise and Inrush Current Limit Substantial input capacitance is included and the input solid state switch previously described is designed to provide associated inrush current limiting. The substantial input capacitance and high SSS provide a “pi” filter configuration that results in very low reflected ripple current. The very low input noise and inrush limiter make the MFP unique among point of load converters. 3.4 3.3 3.0 2.5 Operating Input 2.0 1.6 1.5 1.0 0.8 0.64 0.5 0 0 1.0 2.0 Figure 6: Input www.craneae.com/interpoint 2.75 3.3 3.0 Input Voltage (V) voltage vs Page 13 of 19 MFP0507S Technical Preview Rev D - 2010.11.18 Technical Preview: Contains preliminary information 4.25 4.0 5.0 6.0 Safe Input, Output Disabled and Safe Input, Output Shutdown Region 3: +VIN Under Voltage Shutdown and Output Voltage (V) Pins 2 8.5 Maximum Output Voltage 15.0 Crane Aerospace & Electronics Power Solutions Maximum Flexible Power (MFP) Single Output Point of Load Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter Pin Functions and Applications Pin 5: SENSE The MFP includes a positive remote sense. The SENSE pin is intended to be used to maintain the desired preset voltage at the point-of-use by connecting the remote sense to the +Vout supply in close proximity to the load. Up to 0.3 volts of power line drop can be accommodated. If the SENSE pin lead is not connected to the output positive power pin, the output will rise a total of 0.4 volts. If connections have no voltage drop, the formula for the resistor is RX = [ The output voltage can be margined upward from the preset value as much as 0.2 volts by the addition of a resistor between the positive SENSE pin and the output power pin. The amount of increase in the output voltage by margining will reduce the available remote sense range by the same amount. The sum of margined voltage and voltage sense drop must be less than 0.2 volts. 1000 (0.2697) (VOUT - 3.3) -1 ] in ohms +VOUT Pin 10 SENSE Pin 5 Sense margining can be used to adjust VOUT from 3.3 to 3.5. Connections must be made as close as possible to Common and to RX. This method uses the SENSE pin’s voltage compensation function to raise the output voltage. Therefore, there will not be an option to compensate for voltage drop at the load. TRIM A Pin 7 TRIM B Pin 8 + Rx VOUT - VOUT COM Pin 9 Figure 7: SENSE Pin Voltage Margining, VOUT from 3.3 to 3.5 1, 2 Figure 7, Notes: 1. For external connections see page 11, “Figure 4: Typical Connection Diagram.” 2. See page 16, “Table 7: User Configurable Outputs” for output voltages from 0.64 to 3.3. www.craneae.com/interpoint Page 14 of 19 MFP0507S Technical Preview Rev D - 2010.11.18 Technical Preview: Contains preliminary information Crane Aerospace & Electronics Power Solutions Maximum Flexible Power (MFP) Single Output Point of Load Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter Pin Functions and Applications Pin 6: SHARE The MFP includes a current share feature that allows multiple units to operate as a single supply capable of providing a total current that is the sum of the maximum from each of the units that are operated in parallel. In connecting units in parallel, the SHARE pin is connected between units and all but one unit, the master, will have TRIM A and TRIM B pins tied to the positive SENSE pin. The master will have the TRIM pins configured for the desired output voltage while the other units in parallel will match the current and voltage of the master unit. Two connections are critical to sharing between two units. The SHARE pins of the two (or more) units must be tied together and the TRIM A and TRIM B outputs must be tied together and shorted to +Vout and SENSE for each unit that is not the Master. The master unit will be the one with the highest pre-set output voltage. In the case of Figure 8, callout 3, the master is configured with both TRIM pins open for a 0.8 V output. The SHARE pin can be used as an output current monitor because the voltage on this pin is proportional to unit current. See page 11, Figure 4, callout 5. The SHARE pin can be used to drive an MFP as a voltage controlled current source where the output current will be proportional to the applied voltage with an offset. Output currents corresponding to SHARE pin voltages are shown in Figure 16: SHARE as Monitor for Output Current. Connections for current monitoring are also shown in Figure 4. 1 DC/DC Converter 1 EN MFP Single POL Converter 2 + V IN MASTER +V OUT 10 3 V IN COM + V IN V IN COM INHIBIT +V OUT 5 SENSE TRIM B 8 6 SHARE TRIM A 7 V OUT COM 1 EN SYNC IN SYNC OUT 2 MFP Single POL Converter 2 + V IN SLAVE 3 V IN COM +V OUT 10 V OUT COM 9 4 SYNC IN System Clock For more information: 1 Pin 1, ENABLE section 2 Pin 4, SYNC section 3 V OUT COM 9 4 SYNC IN 5 SENSE TRIM B 8 6 SHARE TRIM A 7 3 Pins 7 and 8, SHARE section above Figure 8: Typical Share Connection www.craneae.com/interpoint with Optional Sync Page 15 of 19 MFP0507S Technical Preview Rev D - 2010.11.18 Technical Preview: Contains preliminary information + LOAD — + V IN DC – Crane Aerospace & Electronics Power Solutions Maximum Flexible Power (MFP) Single Output Point of Load Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter Pin Functions and Applications and 8: TRIM A and TRIM B Pins 9 Output Voltage Set and Adjustment The MFP0507S, single output model has the flexibility to be set for any voltage from 0.64 to 3.3 VDC. The MFP includes five precision set-points that can be accomplished with pin connections alone and no trim resistor. An open circuit on both TRIM pins results in a 0.80 VDC output, grounding one or the other or both pins results in precise output voltages of 1.6 VDC, 2.5 VDC or 3.3 VDC. One other preset voltage is possible using the SENSE pin (pin 5). Connecting both trim pins to the positive SENSE pin results in 0.64 VDC. In-between values of output voltage can be set with the use of external trim resistors in series with the trim pins to ground. Any voltage intermediate to the pre-set voltages is available by adding a trim resistor between Common and both TRIM pins. Table 7 lists available pin-configurable and adjust/trim output voltages. Output Voltage using pin configurations or Trim resistors Desired Voltage 0.64 Pin Configurable TRIM Resistor (RT) 1 from ground to pin 7 and 8 Fixed SENSE pin Vs Both pins 7 and 8 connected to SENSE pin 5 — Both pins 7 and 8 open – 0.9 Fixed V1 Adjust – 57.6 k 1.0 Adjust – 27.4 k 1.2 Adjust – 12.7 k 1.5 Adjust – 6.19 k 1.6 Fixed V2 TRIM A, pin 7 open. TRIM B, pin 8 grounded — — 3.57 k 2.61 k 0.8 1.8 Adjust 2.0 Adjust — 2.5 Fixed V3 TRIM A, pin 7 grounded. TRIM B, pin 8 open 3.3 Fixed V4 Both pins 7 and 8 grounded 10: +VOUT and VOUT Common See page 17, Figures 11 and 12 for typical output ripple plots. Maximum Possible Overload Current 8.5 8.0 Operation not Specified or Guaranteed in this Region 7.0 Normal Operating Region 6.0 5.0 VIN= 3.0V V = IN 6.0 V V = IN 5.0 V VIN= 4.0V 4.0 0 0.64 1.0 1.5 2.0 2.5 3.0 3.5 Output Voltage (V) Figure 9: Maximum Rated Output Current — Table 7, Notes: 1. Formula for RT in Table 7 for VOUT below 3.3 and above 0.8 V: — 6.031 RT = - 2.4 in kOhms VOUT - 0.804 Table 7: User Configurable Output Voltages 1, 2 www.craneae.com/interpoint and Due to the Buck topology, the required output voltage of the MFP must always be at least 0.8 V lower than the input. Precise values of achievable output voltages and currents as a function of VIN are shown on page 15, Figure 8. Output Current (A) Pins 7 2. See page 14, “Figure 7 SENSE Pin Voltage Margining, VOUT from 3.3 to 3.5.” Page 16 of 19 MFP0507S Technical Preview Rev D - 2010.11.18 Technical Preview: Contains preliminary information Crane Aerospace & Electronics Power Solutions Maximum Flexible Power (MFP) Single Output Point of Load Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter 40 mV/div 100 mA/div 100 mA/div Typical Performance Curves: 25°C TC, 5 VDC VIN, 100% load, free run, unless otherwise specified. 1 µs/div 5 VIN, 3.3 VOUT, 5 A load 1 µs/div 3.3 VIN, 1.2 VOUT, 5 A load 1 µs/div 3.3 VIN, 1.2 VOUT, 5 A load MFP0507S Input Ripple (IIN) MFP0507S Input Ripple (IIN) MFP0507S Output Ripple Figure 11 Figure 12 100 mV/div 100 mV/div 40 mV/div Figure 10 500 µs/div 1 µs/div 5 VIN, 3.3 VOUT, 5 A load 500 µs/div 3.3 VIN, 1.2 VOUT, 5 A load 5 VIN, 3.3 VOUT, 5 A load MFP0507S Load Transient MFP0507S Output Ripple MFP0507S Load Transient Figure 14 Figure 13 SHARE as Monitor for Output Current Figure 15 Operating Frequency vs Temperature and Input Voltage 5.0 320 KHz Operating Frequency Output Current (A) 318 KHz 4.0 3.0 2.0 1.0 0 VOUT = 0.8V 0 0.50 VOUT = 1.6V 1.0 VOUT = 2.5V VOUT = 3.3V 1.5 2.0 SHARE Voltage (V) Figure 16: SHARE as Monitor for Output Current www.craneae.com/interpoint 316 KHz 314 KHz 312 KHz 310 KHz Vin=6V 308 KHz 306 KHz Vin=5V 304 KHz Vin=3V Vin=4V 302 KHz 2.5 300 KHz -80° -40° 0° 40° Temperature Figure 17: Operating Frequency vs 80° 120° Temperature and 160° C VIN This graph illustrates the performance of proprietary Interpoint technology Page 17 of 19 MFP0507S Technical Preview Rev D - 2010.11.18 Technical Preview: Contains preliminary information Crane Aerospace & Electronics Power Solutions Maximum Flexible Power (MFP) Single Output Point of Load Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter MIL-PRF-38534 Element Evaluation Component-Level Test Performed /St and /WT non-QML 1 M/S 2 Element Electrical P3 n /883 and /H Class H QML /K Class K QML M/S 2 P3 M/S 2 P3 n n n n Element Visual n n n n Internal Visual n n Temperature Cycling n n Constant Acceleration n n Interim Electrical n Burn-in n Post Burn-in Electrical n Steady State Life n Voltage Conditioning Aging n Visual Inspection n Final Electrical n n n n Wire Bond Evaluation n n n n SEM n SLAM™/C-SAM: Input capacitors only Add’l test, not req. by H or K n Notes: 1. Non-QML products do not meet all of the requirements of MIL-PRF-38534. 2. M/S = Active components (Microcircuit and Semiconductor Die) 3. P = Passive components Definitions: Element Evaluation: Component testing/screening per MIL-STD-883 as determined by MIL-PRF-38534 SEM: Scanning Electron Microscopy SLAM™: Scanning Laser Acoustic Microscopy C-SAM: C - Mode Scanning Acoustic Microscopy Screening Table 1: Element Evaluation www.craneae.com/interpoint Page 18 of 19 MFP0507S Technical Preview Rev D - 2010.11.18 Technical Preview: Contains preliminary information n Crane Aerospace & Electronics Power Solutions Maximum Flexible Power (MFP) Single Output Point of Load Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter Class H and K, MIL-PRF-38534 Environmental Screening NON-QML 1 QML 2 Class H /ST TEST Performed /WT /883 Non-destruct bond pull, Method 2023 Pre-cap Inspection, Method 2017, 2032 n Class K /HP /HR /KP /KR /KF n n n n n n n n n n n n n n n n n n n n n n n n n n n n3 n3 n3 n n n n n n n n n n n n n n n Temperature Cycle (10 times) Method 1010, Cond. C, -55°C to +150°C, ambient Constant Acceleration Method 2001, 3000 g (Qual 5000 g) PIND, Test Method 2020, Cond. A Pre burn-in test, Group A, Subgroups 1 and 4 Burn-in Method 1015, +125°C case, typical 4 96 hours n 160 hours 2 x 160 hours (includes mid-BI test) Final Electrical Test, MIL-PRF-38534, Group A, Subgroups 1 and 4: +25°C case n Subgroups 1 through 6, -70°C, +25°C, +150°C case n Subgroups 1 through 6, -55°C, +25°C, +125°C case n n n n n n Gross Leak, Method 1014, Cond. C n n n n n n Fine Leak, Method 1014, Cond. A n n n n n n n n n n3 n3 n3 n n n Hermeticity Test Gross Leak, Dip (1 x 10-3) n n Radiography, Method 2012 Post Radiography Electrical Test, +25°C case Final visual inspection, Method 2009 n n 5 RHA P: 30 kRad(Si) total dose RHA R: 100 kRad(Si) total dose 5 RHA F: 300 kRad(Si) total dose SEE LET 85 n n n n n n n 6 n MeV-cm2/mg n n n n n Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Notes: 1. /ST (standard) and /WT (wide temperature) are non-QML products may not meet all of the requirements of MIL-PRF-38534. 2. All processes are QMP qualified and performed by QMP qualified operators. 3. Not required by DSCC but performed to assure product quality. 4. Burn-in temperature designed to bring the case temperature to +125°C minimum. 5. Includes low dose rate to the rated total dose (TID) 6. LDR to 100k TID. Screening Table 2: Environmental Screening RHA options are available on request. Formal classification and jurisdiction are pending. MFP Series Single, MFP0507S Technical Preview Rev D - 2010.11.18. This Technical Preview contains preliminary information. Interpoint reserves the right to make changes in products or specifications without notice. MFP Series is a trademark of Interpoint. Copyright © 2010 Interpoint Corporation. All rights reserved. www.craneae.com/interpoint Page 19 of 19