PRELIMINARY PFM V•I Chip PFM Power Factor Module • • • • • • • • • F3D480T20A DC+ Input: rectified 120/240 Vac sinusoidal Output: 48 Vdc programmable Output power: Up to 200 W 4,242 Vdc reinforced insulation 90% efficiency 375 W/in3 power density Low profile: 0.25” Surface mount J Lead package Meets EN 61000-3-2 harmonic current limits Product Description ™ +IN PR SC SG F3D480T20A BV RSV PC 8395846576834856 PFM™ –IN +Out Pb S C NRTL US –Out U.S. & FOREIGN PATS. AND PATS. PENDING. MADE IN U.S.A. © Actual Size Absolute Maximum Ratings The PFM (Power Factor Module) is a V•I Chip power component that converts a rectified 120/240 Vac line to an isolated, regulated DC voltage programmable from 26 V to 48 V. Rated at 200 W, the PFM meets EN61000-3-2 harmonic current limits and is available in a double VIC package measuring only 1.69" (43,0) x 1.26" (32,0) x 0.25" (6,2). The PFM power density is 375 W/in3. The PFM is the front-end V•I Chip for AC-DC power systems. It requires only a rectifier, input filter and an output capacitor to provide a high density, power factor corrected, 200 W power supply. The high operating frequency and soft switching allow miniaturization of power train components and make EMI filter components smaller than those required by lower frequency, hard switching converters. Output energy storage is accomplished at SELV levels providing packaging and interconnect flexibility not available with conventional AC Front Ends. PFMs may be paralleled with power sharing for added power or redundancy in single or three phase systems. The output voltage can be programmed to meet the requirements of system loads and/or additional downstream conversion devices such as Vicor’s Pre Regulator Modules (PRMs) and Voltage Transformation Modules (VTMs). Parameter Input voltage (+IN to -IN) Operating Non-operating Input voltage slew rate PC to -IN BV to -IN PR to -OUT SC Output voltage (+OUT to -OUT) Output current Dielectric withstand (input to output) Temperature Operating junction Storage Case peak temperature during reflow Case peak temperature during reflow Min Max Unit Notes 90 0 264 450 25 7 50 7 1.5 55 6 4,242 Vrms Vdc V/µs Vdc Vdc Vdc Vdc Vdc A Vdc Rectified AC sinusoidal 100 ms 125 150 225 245 ˚C ˚C ˚C ˚C -0.3 -0.3 -0.3 -0.3 -0.5 -55 -65 Reinforced insulation 1 Min M-Grade M-Grade MSL 3 MSL 6 Part Numbering F 3 Power Factor Module D Input Designator 3 = 115/230 Vac Package D = Double VIC w/ J leads Input Filter / Rectifier 480 T Output Voltage Designator (VOUT x10) 20 A Output Power Designator (POUT x 0.1) A = Analog Control Product Grade Temperatures (°C) Grade Storage Operating T -40 to150 -40 to125 M -65 to150 -55 to125 PFM L 48 Vdc 200 W Load N Vicor Corporation Tel: 800-735-6200 vicorpower.com Power Factor Module F3D480T20A Rev. 1.0 Page 1 of 14 PRELIMINARY Electrical characteristics Rectified AC Input Source (Conditions: 25˚C case, 75% rated load and specified input voltage range unless otherwise specified.) The PFM operates from a full bridge rectified AC line with the following characteristics: Parameter Min Typ Max Unit Note The PFM is not designed to support output load when the input is 132 to 175 Vrms Source voltage low range 90 132 Vrms Source voltage high range 180 264 Vrms Source frequency range 47 63 Hz Input (Operating from AC input source) Parameter Min Typ Max Unit Note 82 85 Vrms Source voltage Overvoltage shut down 265 275 Power factor 0.94 Undervoltage shut down Vrms Source voltage 47 – 63 Hz Inrush current 5 A pk Output Parameter Min Typ Max Unit Note Set point Output may be trimmed down from factory set point via external trim resistor. See page 4, SC pin 47.5 48.0 48.5 Vdc Output voltage trim range 26 48 48.0 Vdc Output current 0 4.1 A Vout = 48 Vdc Output power 0 200 W Vout = 48 Vdc see Fig. 22 for heat sink information OVP set point 56 58 Vdc Line regulation 0.3 1 % Load regulation 0.5 1 % Efficiency 88 90 No load power dissipation 0.75 Current share accuracy Switching frequency ripple Line frequency ripple % 120 Vrms 75% load W Meets Energy Star no load limit 5 10 % 240 300 mV pk-pk 350 750 mV rms 1.12 2.0 V pk-pk 2.5 5.0 S ~1.2 MHz with 10 µF ceramic bypass capacitance With 10,000 µF output capacitor Start up time From application of power 2.0 Dynamic response Voltage deviation Recovery time 6 500 No overshoot % mS Of Vout Output capacitance 1,500 2,200 10,000 µF Hold-up capacitance 1,500 2,200 10,000 µF Required for PFC. Output ripple is a function of output and hold-up capacitance. See Fig.8 for hold-up time. 5.5 6.0 A Current limited Short circuit protection Vicor Corporation Tel: 800-735-6200 vicorpower.com Power Factor Module F3D480T20A Rev. 1.0 Page 2 of 14 PRELIMINARY Electrical (cont.) (conditions: 25˚C case, 75% rated load and specified input voltage range) Control Pins (See page 4 for pin description) Pin Min BV (Bias Voltage) -0.5 Typ Max Unit 48 V Note Referenced to -IN 5.2 Vdc Referenced to -IN PC (Primary Control) DC voltage 4.8 5.0 Module disable threshold 2.3 2.4 Module enable threshold 2.5 Disable hysteresis 100 Current limit 2.0 Vdc 2.6 Vdc 3.5 mA mV 2.7 PC pulled low Analog control PR (Parallel Port) Voltage 0.6 Source current 7.5 1 V Referenced to SG, see PR pin pg.4 mA External capacitance 100 pF 1.25 Vdc SC (Secondary Control) Voltage 1.23 1.24 Internal capacitance 1.0 Referenced to SG nF External capacitance 0.7 µF General Parameter Min Typ Max Unit Note Over temperature shut down Junction-to-case thermal impedance 125 130 0.6 135 °C °C/W Junction temperature Case-to-ambient thermal impedance Dielectric withstand Insulation resistance Capacitance Leakage current Line fuse Rating 2.3 °C/W 4,242 10 110 30 250 4 Mechanical Weight Length Width Height 1.0 / 30 1.69 / 43 1.26 / 32 0.25 / 6.2 Vdc M ohms pF µA Vac A Always ascertain and observe applicable safety, regulatory and agency specifications oz / g in / mm in / mm in / mm Contact Vicor for information regarding soldering of the PFM to printed circuit boards. Reflow parameters Resistance to cleaning Solvents Agency approvals (pending) 46 mm x 46 mm x11mm heatsink #31474 with 300 LFM Input to output Input to output Input to output IEC 68-2-45 XA Method 1 Water Isopropyl alcohol cTÜVus CE +55 ±5˚C +35 ±5˚C UL/CSA 60950, EN 60950 Low voltage directive Electromagnetic Compatibility (configured as illustrated in Fig. 18 ) Harmonic currents EN 61000-3-2, Amendment 14 See Fig. 11 Line disturbance / immunity EN 61000-4-11 Interruptions and brownouts Transient / surge immunity EN 61000-4-5 2 kV – 50 µs line or neutral to earth 1 kV – 50 µs line to neutral Conducted emissions EN 55022, Level B Flicker / inrush With filter ( see Fig. 18 ) EN 61000-3-3 Vicor Corporation Tel: 800-735-6200 vicorpower.com Power Factor Module F3D480T20A Rev. 1.0 Page 3 of 14 PRELIMINARY Pin/Control Functions SC – secondary control (analog control models only) Power Factor Module (PFM) DC+ PR SC SG The output voltage may be programmed, margined or trimmed down by connecting a voltage source or resistor between the SC port and SG port. The slew rate of the output voltage may be reduced by controlling the rate-of-rise for the voltage at the SC port ( e.g. to limit inrush into a capacitive load). +IN BV RSV PC +OUT The following expression should be used to calculate the required set point resistor value. No resistor is required if the user desires a nominal 48 V output. -IN -OUT BOTTOM VIEW R = ( Vo / (48 - Vo) ) 30.1 kΩ Figure 1— PFM pin out Where: R = the set point resistor Vo = the desired output voltage set point Primary side Example: +IN / -IN – DC voltage The PFM operates from a full wave rectified AC voltage within the limits shown on page 2. PFMs have internal over / undervoltage lockout functions that prevent operation outside of the specified rms input range. PFMs will turn on when the input voltage rises above its undervoltage lockout. If the input voltage exceeds the overvoltage lockout, PFMs will shut down until the overvoltage fault clears. Vo R 42 V 211 kΩ 36 V 90.3 kΩ Table 1 1.25 V Full Scale BV - bias voltage A 47 µF 50 V electrolytic capacitor must be connected between this port and –IN to provide energy storage for the primary bias circuit. μP 30.1 kΩ RSV – reserved ref 1.25 V PC – primary control The PFM voltage output is enabled when the PC pin is open circuit (floating). To disable the PFM output voltage, the PC pin is pulled to –IN. Open collector optocouplers, transistors, or relays can be used to control the PC pin. When using multiple PFMs in a high power array, the PC ports should be tied together to synchronize their turn on. SC 1 nF SG Figure 2—Functional block diagram Secondary side DC+ SG – signal return (analog control models only) A hold-up capacitor should be connected between this port and SG to provide output hold-up in the event of an input power failure. For 10 ms hold-up at full load, a 2,200 µF 50 V electrolytic capacitor is recommended. DC+ should not be back driven. This port should be used as reference for the SC, PR, and DC+ ports. Care must be taken to insure there are no low impedance paths between -OUT and SG. Such a path could allow current to bypass the internal current sense resistor. PR – parallel port (analog control models only) + OUT / -OUT – voltage output The PR port signal, which is proportional to the PFM output power, supports current sharing among PFMs. To enable current sharing, PR ports should be interconnected. No bypass capacitance should be used when interconnecting PR ports and steps should be taken to minimize stray capacitance and noise coupling into this line (e.g, by minimizing the width of PR port interconnect traces that lay over, or in proximity to, signal grounds or power / ground planes). The PR port is referenced to SG. These ports provide the isolated DC output voltage. The –OUT pin is separated from the SG (Signal Return) pin by the internal current sensing resistor. Vicor Corporation Tel: 800-735-6200 vicorpower.com Safety consideration Care must be exercised to insure appropriate spacing, clearance and creepage distances are maintained between line side terminals and secondary SELV terminals. Power Factor Module F3D480T20A Rev. 1.0 Page 4 of 14 PRELIMINARY PFM Theory of Operation The PFM power-processing module consists of two major functional blocks: an Adaptive Voltage Transformation Module (VTM) that interfaces directly to the rectified line followed by a microprocessor controlled Post Regulator Module (PRM). In contrast to offline power factor correction topologies, input current shaping and energy storage are accomplished on the secondary side of the isolation boundary. +IN Adaptive VTM The Adaptive VTM acts as a nearly ideal DC-to-DC transformer. It accepts the rectified AC input from the power source, configures its step down ratio, or K factor, based on the magnitude of the input voltage, and produces an isolated DC output that instantaneously tracks the input. The Adaptive VTM configures itself by paralleling input cells in low voltage input mode or by series configuration of input cells in high voltage input mode. Operating over the worldwide AC mains, the Adaptive VTM reduces the voltage variation applied to the PRM stage from 3 to1 to 1.5 to1. This reduction in voltage range allows greater performance and economy than would be possible without Adaptive Transformation, which is enabled by Vicor’s proprietary class of Cascaded Topologies. The PFM uses a Sine Amplitude Converter (SAC) Cascaded Topology providing zero-voltage/zero-current switching through a low Q resonant circuit to eliminate switching losses. The SAC can be operated efficiently at high frequencies, typically in the 3 MHz range. The high operating frequency allows miniaturization of power train components with a commensurate increase in converter power density. High operating frequency and soft switching makes EMI filtering components smaller than those required by lower frequency, hard switching converters. To PRM Control –IN Figure 3— 120 Vac input configuration +IN To PRM Control –IN Figure 4— 240 Vac input configuration Vicor Corporation Tel: 800-735-6200 vicorpower.com Power Factor Module F3D480T20A Rev. 1.0 Page 5 of 14 PRELIMINARY PFM Theory of Operation cont. PRM with PFC The output of the VTM drives the PFC/PRM. The PFC/PRM (Figure 5 ) is a microprocessor controlled, high-efficiency, zero-voltage switching buck-boost regulator providing output voltage regulation and input current shaping. The input voltage, isolated and adaptively transformed by the VTM, and the PRM’s output voltage and output current are sampled by the microprocessor. The processor uses a digital algorithm to develop a control signal used to simultaneously regulate the output voltage and shape the module input current, providing harmonic current reduction. This control signal is fed to the switch management ASIC. This provides proper switch timing, maintaining zero-voltage switching under all operating conditions. Energy storage is accomplished outside the PFM by means of an output capacitor that may be sized to meet the user’s hold up requirements. DC+ External Cap +OUT To External Cap and Load From VTM –OUT ZVS Control μ Controller Figure 5 — The PRM with PFC +IN T2 1 Q1 2 T1 T2 2 Q2 Q5 +OUT 1 1 PC BV T2 T2 2 2 Q3 –OUT T1 1 Q6 Frequency Lock/Control T2 2 1 T2 Proprietary Analog Buck-Boost Control 1 Q4 VREF 1.25 V 30.1 kΩ μP 1.25 V Full Scale PR SG SC 2 1 nF –IN Figure 6 — Functional block diagram of the PFM Vicor Corporation Tel: 800-735-6200 vicorpower.com Power Factor Module F3D480T20A Rev. 1.0 Page 6 of 14 PRELIMINARY (conditions: 25˚C case, 75% rated load and specified input voltage range) 220 30 200 25 Hold-up Time (mS) Output Power Electrical 180 160 140 120 100 26 37 20 15 10 5 0 48 50 100 Output Voltage 150 200 Output Power (W) Figure 7 — Output power rating vs. trimmed output voltage Figure 8 — Hold up time with 2,200 µF output and hold-up capacitors with 48 Vdc output 91 25.0 90 Power Dissipation (W) Efficiency (%) 89 88 87 86 85 84 83 82 50 75 100 125 150 175 20.0 15.0 10.0 5.0 0.0 200 50 Output Power (W) 75 100 125 150 175 200 Output Power (W) Figure 9 — Efficiency vs. Output Power (120 Vrms, 48 Vdc) Figure 10 — Power Dissipation vs. Output Power (120 Vrms, 48 Vdc) PFM Harmonic Current 2.50 Measured Value Limit 2.00 + DC+ 4.0 A Amperes +In 1.50 Rectified 120 / 240 Vac 0.5 μF 600 V + 47 μF 50 V 1.00 BV RSV PC PR SC -In Optional Hold-up Cap. 2,200 μF 50 V SG PFM Output Cap. +OUT – + -OUT + 2,200 μF 50 V Load 0.50 0.00 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 Harmonic Figure 11 — Harmonic Current vs. EN61000-3-2 limits (115 Vrms 180 W Out) Vicor Corporation Tel: 800-735-6200 vicorpower.com Figure 12 — PFM test circuit Power Factor Module F3D480T20A Rev. 1.0 Page 7 of 14 PRELIMINARY Electrical (cont.) Figure 13 — Typical Input Current (230 Vrms 200 W Out) Figure 14 — Transient Response Input:120 Vac, 60 Hz Output step load: 10% to 90% to 10% Figure 15 — Output Ripple (Line frequency) Figure 16 — Output Ripple (Switching frequency) Vicor Corporation Tel: 800-735-6200 vicorpower.com Power Factor Module F3D480T20A Rev. 1.0 Page 8 of 14 PRELIMINARY Electrical (cont.) PFM Applications L2 HOLD-UP CAP DC+ F1 L +In PR SC VC PC TM IL NC PR + C4 R1 120 / 240 Vac Filter/ Rectifier + BV RSV PC SG PFM C1 F2 +OUT -In N +Out Factorized Bus (Vf) RCD L1 1 2 4 3 C6 -OUT R2 –In –Out L3 Refer to Fig.18 -In VTM K Ro +Out -Out 1.2 Vdc 100 A -Out V048F015T100 P048F048T24AL C2 TM VC PC L O A D +Out +In ROS + + C5 PRM-AL +In VH SC SG OS NC CD C3 Connect to a copper shield plane under the PFM Ref Des Description F1 F2 C1 C2, C3 C4, C5 C6 L1 L2 Ros RCD R1 R2 Fuse, 3.15 A, 5x20 Fuse 6 A 47 μF, 50 V 4.7 nF, 250 V, Y2 2,200 μF, 50 V 88 μF 63 V Dual winding inductor, 0.1 nH / winding Ferrite bead, 6 A 33 ohm @ 100 MHz 2.9 K Ω 32.4 Ω 1/16 Watt for adj. see SC pin p.11 1/16 Watt 10 Ω Vicor P/N 30707-476 19726-972 29852-R10 29187-33R0 Figure 17 — Typical FPA (Factorized Power Architecture) from the wall plug to the point of load. See PRM data sheet (P048F048T24AL) for other output voltage / current options. Vicor Corporation Tel: 800-735-6200 vicorpower.com Power Factor Module F3D480T20A Rev. 1.0 Page 9 of 14 PRELIMINARY Electrical (cont.) Input Filter and Rectifier The circuit shown below provides AC line rectification, transient suppression, and conducted emissions filtering to comply with standards imposed by the EMC (Electromagnetic Compatibility) directive. These include the transient immunity standard EN 61000-4-5, and the conducted emissions standard EN 55022, level B. C10 C12 D10 R1 DC+ 2 3 0 D1 L1 2 5 1 D2 +In PR SC Z1 1 6 F1 L D5 C1 120 / 240 VAC C2 C3 Q1 C6 D7 C4 N R2 Z2 D3 BV RSV PC D8 C9 Z3 3 4 SG PFM +OUT D6 D4 C16 D9 1 C7 C5 C8 C14 C15 -In C11 C17 2 J2 -OUT C13 Connect to a copper shield plane under the PFM REF DES C1 - C4 C5 C6 C7, C8, C14, C15 C9 C10 - C13 D1 - D4 Q1 D5, D6, D10 D7 D8 D9 F1 J1 - J3 L1 R1 R2 Z1 Z2, Z3 DESC CAP X7R 0.1uF 630V 1812 CAP X7R 0.01uF 500V 1206 CAP 1uF 100V 1206 CAP 0.022uF 630V 1206 CAP 47uF 50V ALEL SMD CAP 4.7nF 250V Y2 DIODE 3A 1KV UF SMD MOSFET TVS 200V 600W SMB ZENER DIODE 15V DIODE 1N4148 ZENER DIODE 24V FUSE 3.15A 250V SMD TERM BLOCK 2 POS SMD CHOKE COMMON MODE RES 200 1% 1206 RES 1K 1% 1206 SIDACTOR 200V MOV 220V MFG TDK KEMET SAMSUNG TDK PANASONIC MURATA CENTRAL SEMI VISHAY ON SEMI DIODES INC. ON SEMI DIODES INC. LITTELFUSE WECO GOWANDA KOA SPEER KOA SPEER LITTELFUSE LITTELFUSE MFG P/N C4532X7R2J104MT000N C1206C103KCRACTU CL31B105KCHNNNE C3216X7R2J223KT0L0U ECE-V1HA470XP GA355DR7GC472KY02L CMR3U-10M SUM45N25-58 P6SMB200AT3 BZT52C15 MMSD4148T1G BZT52C24 0465 3.15 140-A-524-SMD/02 51-935 ERJ-P08J201V RK73H1JT1001F P2000SB V240CH8 Figure 18 — Typical application circuit PFM Evaluation Board C16 PFM C17 Figure 19 — The PFM evaluation board shown (actual size) above illustrates the layout and compact size of a complete AC to 48 Vdc, 200 Watt front end power supply using the PFM. Vicor Corporation Tel: 800-735-6200 vicorpower.com Power Factor Module F3D480T20A Rev. 1.0 Page 10 of 14 PRELIMINARY Electrical (cont.) PFM Applications The block diagram below shows an example of a Factorized Power system from the wall plug to the point-of-load. The PFM directly regulates a primary high power output through a VTM to provide voltage division. A secondary output is independently regulated with a PRM. Auxiliary outputs are derived through a V•I Chip Bus Converter Module (BCM) and non-isolated POL converters. Input Filter / Rectifier PFM VTM L NS NP 120 / 240 Vac Output 1 N PRM VTM NS NP Output 2 L BCM NP niPOL NS L Output 3 niPOL L Output 4 Figure 20 — Typical application using Factorized Power Architecture (FPA) The block diagram below shows a 400 Watt PFC front end with two PFMs in a parallel configuration. Higher power can be achieved by adding additional PFMs. PFM Input Filter / Rectifier 48 Vdc 400 Watts Load L 120 / 240 Vac PFM N Figure 21 — Two PFMs operated in parallel for additional power. Vicor Corporation Tel: 800-735-6200 vicorpower.com Power Factor Module F3D480T20A Rev. 1.0 Page 11 of 14 PRELIMINARY Thermal Management PFM 7 Case-to-ambient thermal resistance with Heatsink #31474 Thermal Resistance (C/W) 6 5 4 3 2 1 0 0 200 400 600 800 1000 1200 Air Velocity (LFM) Figure 22 — Case to ambient thermal resistance vs. airflow using heatsink #31474 (46mm x 46mm x 11mm) with MCMStrate 2 mil interface Vicor Corporation Tel: 800-735-6200 vicorpower.com Power Factor Module F3D480T20A Rev. 1.0 Page 12 of 14 PRELIMINARY Mechanical Drawings 43.0 1.69 6.2 0.25 36.99 1.456 3.01 0.118 (6) 3.01 0.118 1.10 0.043 26.00 1.024 22.00 0.866 24.00 0.945 (2) 8.10 0.319 OUTPUT 30.00 1.181 C L 1.22 0.048 8.56 0.337 INPUT 28.00 1,102 OUTPUT 32.0 1.260 INPUT (3) 22.54 0.887 14.94 0.588 11.10 16.94 0.437 12.94 0.667 0.509 20.00 0.787 10.00 0.394 C L TOP VIEW (COMPONENT SIDE) BOTTOM VIEW NOTES: 1- DIMENSIONS ARE mm/in 2- UNLESS OTHERWISE SPECIFIED, TOLERANCES ARE: .X/(.XX) = ±0.025/(.01); XX/(.XXX) = ±0.13/(.005) Figure 23 — PFM outline drawing 3.26 0.128 36.74 1.446 3.26 0.128 0.51 TYP 0.020 1.38 TYP 0.054 (12) 1.48 0.058 (2) 28.00 1.102 DC+ (2) 8.94 0.352 (6) 1.60 0.063 +IN PR SC SG BV RSV PC (2) 22.54 0.887 (2) (2) 16.94 0.667 14.94 0.588 (2) (2) 11.48 0.452 12.94 0.509 +OUT (4) 8.48 0.334 (2) –IN –OUT RECOMMENDED LAND PATTERN (COMPONENT SIDE SHOWN) (2) 10.00 0.394 (2) 22.00 0.866 20.00 0.787 (2) (2) 26.00 1.024 (2) 30.00 1.181 24.00 0.945 NOTES: 1- DIMENSIONS ARE mm/in 2- UNLESS OTHERWISE SPECIFIED, TOLERANCES ARE: .X/(.XX) = ±0.025/(.01); XX/(.XXX) = ±0.13/(.005) Figure 24 — PFM PCB land and layout information Vicor Corporation Tel: 800-735-6200 vicorpower.com Power Factor Module F3D480T20A Rev. 1.0 Page 13 of 14 PRELIMINARY Warranty Vicor products are guaranteed for two years from date of shipment against defects in material or workmanship when in normal use and service. This warranty does not extend to products subjected to misuse, accident, or improper application or maintenance. Vicor shall not be liable for collateral or consequential damage. This warranty is extended to the original purchaser only. EXCEPT FOR THE FOREGOING EXPRESS WARRANTY, VICOR MAKES NO WARRANTY, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Vicor will repair or replace defective products in accordance with its own best judgement. For service under this warranty, the buyer must contact Vicor to obtain a Return Material Authorization (RMA) number and shipping instructions. Products returned without prior authorization will be returned to the buyer. The buyer will pay all charges incurred in returning the product to the factory. Vicor will pay all reshipment charges if the product was defective within the terms of this warranty. Information published by Vicor has been carefully checked and is believed to be accurate; however, no responsibility is assumed for inaccuracies. Vicor reserves the right to make changes to any products without further notice to improve reliability, function, or design. Vicor does not assume any liability arising out of the application or use of any product or circuit; neither does it convey any license under its patent rights nor the rights of others. Vicor general policy does not recommend the use of its components in life support applications wherein a failure or malfunction may directly threaten life or injury. Per Vicor Terms and Conditions of Sale, the user of Vicor components in life support applications assumes all risks of such use and indemnifies Vicor against all damages. Vicor’s comprehensive line of power solutions includes high density AC-DC and DC-DC modules and accessory components, fully configurable AC-DC and DC-DC power supplies, and complete custom power systems. Information furnished by Vicor is believed to be accurate and reliable. However, no responsibility is assumed by Vicor for its use. Vicor components are not designed to be used in applications, such as life support systems, wherein a failure or malfunction could result in injury or death. All sales are subject to Vicor’s Terms and Conditions of Sale, which are available upon request. Specifications are subject to change without notice. Intellectual Property Notice Vicor and its subsidiaries own Intellectual Property (including issued U.S. and Foreign Patents and pending patent applications) relating to the products described in this data sheet. Interested parties should contact Vicor's Intellectual Property Department. Vicor Corporation 25 Frontage Road Andover, MA, USA 01810 Tel: 800-735-6200 Technical Support: 800-927-9474 Fax: 978-475-6715 email Vicor Express: [email protected] Technical Support: [email protected] Vicor Corporation Tel: 800-735-6200 vicorpower.com Power Factor Module F3D480T20A Rev. 1.0 Page 14 of 14 10/05