® PI2001-EVAL1 Cool-ORing ™ Series PI2001-EVAL1 Active ORing Evaluation Board User Guide Contents Cool-ORing™ Series Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 1 PI2001 Product Description . . . . . . . . . . . . . . . . . . Page 2 Evaluation Board Terminal Description . . . . . . . . Page 2 Evaluation Board Schematic . . . . . . . . . . . . . . . . . Page 3 Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 3 Evaluation Board Configuration . . . . . . . . . . . . . . Page 4 Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 4 PCB Layouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 10 Evaluation Board Mechanical Drawing . . . . . . . Page 11 The PI2001-EVAL1 Evaluation Board is intended to acquaint the user with the benefits and features of the Cool-ORingTM PI2001 Universal Active ORing controller. It is not designed to be installed in end-use equipment. Please read this document before setting up the PI2001-EVAL1 Evaluation Board and refer to the PI2001 product data sheet for device specifications, functional description and characteristics. PI2001-EVAL1 Evaluation Board featuring the Cool-ORing PI2001 Universal Active ORing controller. During operation, the power devices and surrounding structures can be operated safely at high temperatures. • Remove power and use caution when connecting and disconnecting test probes and interface lines to avoid inadvertent short circuits and contact with hot surfaces. • When testing electronic products always use approved safety glasses. Follow good laboratory practice and procedures. Introduction The PI2001-EVAL1 allows the user to test the basic principle and operational characteristics of an Active ORing function in a redundant power architecture, while also experiencing the benefits and value of the PI2001 solution versus conventional Active ORing solutions. The PI2001-EVAL1 evaluation board is configured to receive two independent power source inputs, per a typical redundant power architecture, through two Active ORing channels that are combined to form a redundant power output. Each channel contains a PI2001 controller and an N-channel power MOSFET. The MOSFET foot print can take an SO-8 or Power SO-8 MOSFET package. Each channel is capable of up to 20 A, for high current Active ORing, above 20 A, the two channels provided on the evaluation board can be paralleled in a master / slave configuration and OR’d with a second evaluation board. Picor Corporation • www.picorpower.com The PI2001-EVAL1 evaluation board is designed with optimized PCB layout and component placement to represent a realistic high density final design for an embedded Active ORing solution for ≤ 7 Vbus applications requiring up to 20 A. This evaluation board is intended as an easy and simple way to test the electrical and thermal performance of the PI2001 Active ORing controller. Both dynamic and steady state testing of the PI2001 can be completed on the PI2001-EVAL1 evaluation board, in addition to using the key features of the product. Dynamic testing can be completed under a variety of system level fault conditions to check for response time to faults. This document provides basic instructions for initial start-up and configuration of the evaluation board. Further information on the functionality of the PI2001 can be found in the PI2001 product data sheet. P12001-EVAL1 User Guide Rev 1.1 Page 1 of 11 Cool-ORingTM PI2001 Product Description The Cool-ORing PI2001 with an external industry standard N-channel MOSFET provides a complete Active ORing solution designed for use in redundant power system architectures. The PI2001 controller with N-channel MOSFET enables extremely low power loss with fast dynamic response to fault conditions, critical for high availability systems. A master / slave feature allows the paralleling of PI2001 solutions for high current Active ORing requirements. The PI2001 can also drive multiple paralleled MOSFETs. The PI2001 controller with a low Rds(on) N-channel MOSFET provides very high efficiency and low power loss during steady state operation. The PI2001 controller provides an active low fault flag output to the system during excessive forward current, light load, reverse current, over-voltage, under-voltage, and over-temperature fault conditions. A temperature sensing function indicates a fault if the maximum junction temperature exceeds 160°C. The undervoltage and over-voltage thresholds are programmable via an external resistor divider. Figure 1 shows a photo of the PI2001-EVAL1 evaluation board, with two PI2001 controllers and two N-channel MOSFETs used to form the two Active ORing channels. The board is built with two identical Active ORing circuits with options and features that enable the user to fully explore the capabilities of the PI2001 universal Active ORing controller. Terminals Rating Vin1, Vin2 Vaux1, Vaux2, (R2 = R4 = 10 Ω) 8V / 24 A -0.3 V to 17.3 V / 40 mA SL1, SL2 -0.3 V to 8.0 V / 10 mA FT1, FT2 -0.3 V to 17.3 V / 10 mA Figure 1 – PI2001-EVAL1 Evaluation Board (1.8" x 1.8") Terminal Description Vin1 Power Source Input #1 or bus input designed to accommodate up to 20 A continuous current. Vaux1 Auxiliary Input Voltage #1 to supply PI2001 VC power. Vaux1 should be equal to Vin1 plus 5 V or higher. See details in Auxiliary Power Supply (Vaux) section of the PI2001 data sheet. Rtn1 Vaux1 Return Connection: Connected to Ground plane Gnd Vin & Vout Return Connection: Three Gnd connections are available and are connected to a common point, the Ground plane. Input supplies Vin1 & Vin2 and the output load at Vout should all be connected to their respective local Gnd connection. SL1 PI2001 (U1) Slave Input-Output Pin: For monitoring U1 slave pin. When U1 is configured as the Master, this pin functions as an output that drives slaved PI2001 devices. When U1 is configured in Slave mode, SL1 serves as an input. SL2 PI2001 (U2) Slave Input-Output Pin: For monitoring U2 slave pin. When U2 is configured as the Master, this pin functions as an output that drives slaved PI2001 devices. When U2 is configured in Slave mode, SL2 serves as an input. Vin2 Power Source Input #2 or bus input designed to accommodate up to 20 A continuous current. Vaux2 Auxiliary Input Voltage #2 to supply PI2001 VC power. Vaux2 should be equal to Vin2 plus 5 V or higher. See details in Auxiliary Power Supply (Vaux) section of the PI2001 data sheet. Rtn2 Vaux2 Return Connection: Connected to Ground plane FT1 PI2001 (U1) Fault Pin: Monitors U1 fault conditions FT2 PI2001 (U2) Fault Pin: Monitors U2 fault conditions Vout Output: Q1 and Q2 MOSFET Drain pins connection, connect to the load high side. Table 1 – PI2001-EVAL1 Evaluation Board terminals description Jumper J1, J3 J2 Description BK Jumpers: Connect jumper across M for master mode and across S for slave mode. Remove jumper to adjust reverse fault blanking time using Rbk. Rbk is R7 for U1 and R14 for U2 shown in the schematic, Figure 2. Slave Jumper: Remove the jumper unless one of the PI2001 is configured in slave mode. Table 2 – PI2001-EVAL1 Evaluation Board jumpers description Picor Corporation • www.picorpower.com P12001-EVAL1 User Guide Rev 1.1 Page 2 of 11 Q1 FDS8812NZ VI N1 R1 8.45K 1% 3 2 1 C4 Not Installed R2 13.3 K 1% 8 7 6 5 VOUT Vout2 Vaux1 Gnd1 U1 PI2001 10 8 R3 10.0 SN 2 FT1 C3 22uF Gnd3 Gnd4 VC OV FT SL BK 3 VC1 6 FT1 5 BK1 Vaux1 R4 D1 4.99K SL1 R5 R6 2.00 K 1% S R7 1 2.00 K 1% 4 GND Vaux1 UV GATE SP 7 GND 9 Vout1 C6 Not Installed 4 Vin1 J1 Not Installed C1 1uF M Rtrn1 SL1 J2 Q2 FDS8812NZ 8 3 7 2 6 1 5 SL2 VI N2 Vin2 C5 Gnd2 R9 13.3 K 1% Not Installed C7 Not Installed 4 R8 8.45 K 1% Vaux2 9 10 UV FT2 8 R10 10.0 SN 2 GATE SP 7 U2 PI2001 VC OV FT SL BK VC2 3 6 FT2 5 BK2 R11 D2 Vaux2 R12 2.00 K1% R13 2.00 K1% 1 Vaux2 4 GND 4.99K SL 2 S J3 R14 Not Installed M C2 1uF Rtrn2 Figure 2 – PI2001-EVAL1 Evaluation Board schematic. Item QTY Reference Designator Value 1 2 C1, C2 1 µF 2 1 C3 22 µF 3 4 4 2 5 8 6 7 7 8 2 1 C4, C5, C6, C7 D1, D2 FT1, FT2, Rtn1, Rtn2, SL1, SL2, Vaux1, Vaux2 Gnd1, Gnd2, Gnd3, Gnd4, Vin1, Vin2, Vout1, Vout2 J1, J3 J2 9 2 Q1, Q2 10 11 12 13 14 15 16 2 2 2 2 4 2 2 R1, R8 R2, R9 R3, R10 R4, R11 R5, R6, R12, R13 R7, R14 U1, U2 8.45 KΩ 13.3 KΩ 10 Ω 4.99 KΩ 2.00 KΩ Not Installed PI2001 Description Capacitor, MLCC X5R, 1 µF,16 V Capacitor, MLCC X7R, 22 µF, 25 V Not installed LED, Super Red 1206 THIN 0603 Turret Test point TURRET-1528 Turret Test point TURRET-1502 Header Pins 0.1" pitch Header Pins 0.1" pitch FDS8812NZ 30 V, 20 A, N-MOSFET Resistor,8.45 KΩ,1% Resistor,13.3 KΩ,1% Resistor,10 Ω,5% Resistor, 4.99 KΩ,5% Resistor, 2.00 KΩ,1% 2 x 3mm 2 x 2mm Picor Universal Active ORing Controller Footprint Manufacturer 0603 1210 Lite-On, Inc., Keystone Electronics Keystone Electronics SO-8 Fairchild 0603 0603 0603 0603 0603 0603 3mmx3mm; 10-TDFN PICOR Table 3 – PI2001-EVAL1 Evaluation Board bill of materials Picor Corporation • www.picorpower.com P12001-EVAL1 User Guide Rev 1.1 Page 3 of 11 Reference Designator C1, C2 C3 C4, C5, C6, C7 D1, D2 J1, J3 J2 Q1, Q2 R1, R8 R2, R9 R3, R10 R4, R11 R5, R6 R7, R14 U1, U2 Value 1 µF 22 µF Not installed LED Jumper Jumper N-MOSFET 8.45 KΩ 13.3 KΩ 10 Ω 4.99 KΩ 2.00 KΩ Not Installed PI2001 Functional Description VC Bypass Capacitor Output (Load) Capacitor Snubber to reduce voltage ringing when the device turns off To indicate a fault exist when it is on To select between Master and Slave Modes Connection between SL1 and SL2 ORing Main Switch UV Voltage Divider Resistor ( R2UV in Figure 4) OV Voltage Divider Resistor ( R2OV in Figure 4) VC Bias resistor LED Current Limiter UV Voltage Divider Resistor ( R1UV in Figure 4) BK Delay Timer Programmable Resistor Universal Active ORing Controller Table 4 – Component functional description Initial Test Set Up To test the PI2001-EVAL1 evaluation board it is necessary to configure the jumpers (J1, J2 and J3) first based on the required board configuration. Failure to configure the jumpers prior to the testing may result in improper circuit behavior Baseline Test Procedure (Refer to Figure 3) 1.0 Recommended Equipment 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 Two DC power supplies - 0-10 V; 25 A. DC power supply 12 V; 100 mA. DC electronic load - 50 A minimum. Digital Multimeter Oscilloscope. Appropriately sized interconnect cables. Safety glasses. PI2001 Product Data sheet. Figure 3 – Layout configuration for a typical redundant power application, using PI2001 with both solutions configured in Master Mode. Picor Corporation • www.picorpower.com P12001-EVAL1 User Guide Rev 1.1 Page 4 of 11 Before initial power-up follow these steps to configure the evaluation board for specific end application requirements: 2.0 Undervoltage (UV) and Overvoltage (OV) resistors set up: Vin 2.1 UV and OV programmable resistors are configured for a 3.3 V Vin (BUS voltage) application in a two-resistor voltage divider configuration as shown in Figure 4. UV is set to 2.6 V and OV is set for 3.8 V, R1OV and R1UV are 2.00KΩ 1%. If PI2121-EVAL1 is required to be used in a different Vin voltage . . application please follow the following steps to change the resistor values. UV R1UV PI2001 R2OV OV R1OV 2.1.1 It is important to consider the maximum current that will flow in the resistor divider and maximum error due to UV and OV input . current. R1UV = V_Logic R2UV V(UVTH) IRUV 2.1.2 Set R1UV and R1OV value based on system allowable minimum current and 1% error; IRUV ≥ 100 µA FT FT GND Ref. Desg. U1 U2 R1UV R5 R12 R2UV R1 R8 R1OV R6 R13 R2OV R2 R9 Figure 4 – UV & OV two-resistor divider configuration R2UV = R1UV ( V(UV) –1 V(UVTH) ) Where: V(UVTH) : UV threshold voltage V(UV) : UV voltage set (0.5 V typ) IRUV: R1UV current R2OV = R1OV ( V(OV) –1 V(OVTH) ) Where: V(OVTH) : OV threshold voltage V(OV) : OV voltage set (0.5 V typ) IROV: R1OV current 2.1.3 Example for 2.0 V Vin (BUS voltage), to set UV and OV for ±10% Vin set UV at 1.8 V and OV at 2.2 V. R2UV= R1UV ( ) ( 1.8 V 0.5 V –1 = 5.20 KΩ (or 5.23 KΩ % standard value) R2OV= R1OV ( V(OV ) ) ( 2.2 V –1 = 6.80 KΩ (or 6.81 KΩ % standard value) V(UV) –1 = 2.00 KΩ* V(UVTH) V(OV) TH –1 = 2.00 KΩ* Picor Corporation • www.picorpower.com 0.5 V ) ) P12001-EVAL1 User Guide Rev 1.1 Page 5 of 11 3.0 Blanking timer setup: 3.1 The blanking timer provides noise filtering for typical switching power conversion that might cause premature reverse current detection by masking the reverse fault condition. The shortest blanking time is 50 ns when the BK pin is connected to ground. Connecting an external resistor (RBK, reference designators R7 for U1 and R14 for U2) between the BK pin and ground will increase the blanking time as shown in Figure 5. 4.4 If Vaux is higher than the Clamp voltage, 15.5 V typical, the Rbias value has to be changed using the following equations: 4.4.1 Select the value of Rbias using the following equation: Rbias = Vauxmin – VCclampMAX ICmax 4.4.2 Calculate Rbias maximum power dissipation: Where: RBK ≤ 200 KΩ PdRbias = Note: When BK is connected to VC for slave mode . operation,then the blanking time will be 270 ns typically. Where: (Vauxmax – VCclampMIN)2 Rbias Vauxmin: Vaux minimum voltage Vauxmax: Vaux maximum voltage VCClampMAX: Maximum controller clamp voltage, 16.0 V VCClampMIN: Minimum controller clamp voltage, 14.0 V ICmax: Controller maximum bias current, use 4.2 mA 4.4.3 For example, if the minimum Vaux = 22 V and the maximum Vaux = 28 V Rbias = Vauxmin – VCclampMAX ICmax = 22 V–16 V = 1.429 KΩ 4.2 mA ,use 1.43 KΩ 1% resistor Figure 5 –BK Resistor selection versus Blanking Time 4.0 Auxiliary Power Supply (Vaux): 4.1 The PI2001 Controller has a separate input (VC) that provides power to the control circuitry and the gate driver. An internal voltage regulator (VC) clamps the VC voltage to 15.5 V typically. 4.2 Connect independent power source to Vaux inputs of PI2001-EVAL1 Evaluation Board to supply power to the VC input. The Vaux voltage should be 5V higher than Vin (redundant power source output voltage) to fully enhance the MOSFET. If the MOSFET is replaced with different MOSFET, make sure that Vaux= Vin + 0.5 V + required voltage to be enhance the MOSFET. PdRbias = (Vauxmax – VCclampMIN)2 = (28 V–14.0 V)2 =137 mW Rbias 1.43 KΩ Note: Minimize the resistor value for low Vaux voltage levels to avoid a voltage drop that may reduce the VC voltage lower than required to drive the gate of the internal MOSFET. 4.3 10 Ω bias resistors (Rbias, reference designators R3 and R10) are installed on the PI2001-EVAL1 between each Vaux input and VC pin of one of the PI2001 controller. Picor Corporation • www.picorpower.com P12001-EVAL1 User Guide Rev 1.1 Page 6 of 11 5.0 Hook Up of the Evaluation Board 5.1 OV and UV resistors values are configured for a 3.3 V input voltage. If you are using the evaluation board in a different input voltage level you have to adjust the resistor values by replacing R1, R2, R8 and R9, or remove R2, R5, R9 and R12 to disable UV and OV. Please refer to the UV/OV section for details to set R1, R2, R8 and R9 proper values. 5.2 Verify that the jumpers J1 and J3 are installed for master mode [across M] and no Jumper on J2. 5.3 Connect the positive terminal of PS1 power supply to Vin1. Connect the ground terminal of PS1 to its local Gnd. Set the power supply to 3.3 V. Keep PS1 output disabled (OFF). 5.4 Connect the positive terminal of PS2 power supply to Vin2. Connect the ground terminal of PS2 to its local Gnd. Set the power supply to 3.3 V. Keep PS2 output disabled (OFF). 5.5 Connect the positive terminal of PS3 power supply to Vaux1 and Vaux2. Connect the ground terminal of this power supply to Rtn1 and Rtn2. Set the power supply to 12 V. Keep PS3 output disabled (OFF). 5.6 Connect the electronic load to the output between Vout and Gnd. Set the load current to 10 A. 5.7 Enable (turn ON) PS1 power supply output. 5.8 Turn on the electronic load. 5.9 Verify that the electronic load input voltage reading is one diode voltage drop below 3.3 V. 5.10 Enable (turn ON) PS3 power supply output. 5.11 Verify that the electronic load voltage reading increases to a few millivolts below 3.3 V. This verifies that the MOSFET is in conduction mode. 5.12 D1 should be off. This verifies that there is no fault condition. 5.13 Reduce PS1 output voltage to 2 V, 5.14 D1 should turn on, this verifies that the circuit is in an under-voltage fault condition. 5.15 Increase PS1 output to 3.3 V, D1 should turn off, then increase PS1 output to 4 V, D1 should turn on indicating an over-voltage fault condition 5.16 Verify that Vin2 is at 0V. This verifies that the PI2001 (U2) FET (Q2) is off. 5.17 D2 should be on. This is due to a reverse voltage fault condition caused by the bus voltage being high with respect to the input voltage (Vin2). 5.18 Enable (turn ON) PS2 output. 5.19 Verify that both PS1 and PS2 are sharing load current evenly by looking at the supply current. 5.20 Disable (turn OFF) PS1, PS2 and PS3 outputs. 5.22 Verify that the electronic load voltage reading is few millivolts below 3.3 V. This verifies that the PI2001 (U2) MOSFET (Q2) is in conduction mode. 5.23 D2 should be off. This verifies that there is no fault condition. 5.24 Reduce PS2 output voltage to 2 V, 5.25 D2 should turn on, this verifies that the circuit is in an under-voltage fault condition. 5.26 Increase PS2 output to 3.3 V, D2 should turn off, then increase PS2 output to 4 V, D2 should turn on indicating an over voltage fault condition. 5.27 Verify that Vin1 is at 0V. This verifies that the PI2001 (U1) FET (Q1) is off. 5.28 D1 should be on. This is due to a reverse voltage fault condition caused by the bus voltage being high with respect to the input voltage (Vin1). 6.0 Slave Mode: Slave Mode can be demonstrated in two setups; either by using one PI2001-EVAL1 evaluation board as a single ORing function with both PI2001 effectively in parallel or two PI2001-EVAL1 evaluation boards to demonstrate a true redundant 40A system. The following test steps use a single PI2001-EVAL1 in a slave mode application. Note: In this experiment U1 is configured in master mode and U2 is configured in slave mode. 6.1 BK pin (J1) of the master device will be connected to ground [across M] while the slaved device BK pin (J3) is connected to VCC [across S]. Place a jumper across J2 to connect slave pins together. 6.2 Connect the positive terminal of PS1 power supply to Vin1. Connect the ground terminal of this power supply to Gnd. Set the power supply to 3.3 V. Keep PS1 output disabled (OFF). 6.3 Connect the positive terminal of PS2 power supply to Vin2. Connect the ground terminal of this power supply to Gnd. Set the power supply to 3.3 V. Keep PS2 output disabled (OFF). 6.4 Connect the positive terminal of PS3 power supply to Vaux1 and Vaux2. Connect the ground terminal of this power supply to Rtn1 and Rtn2. Set the power supply to 12 V. Keep PS3 output disabled (OFF). 6.5 Connect the electronic load between Vout and Gnd. Set the load current to 10 A. 6.6 Enable (Turn ON) PS2, and PS3 outputs, and keep PS1 output disabled (OFF). 6.7 Turn on the electronic load. 6.8 Verify that electronic load voltage drops to a diode drop below PS2. This verifies that the Q2 is off due to the Master (U1) not being on. 5.21 Enable (turn ON) PS2 output then Enable PS3 output. Picor Corporation • www.picorpower.com P12001-EVAL1 User Guide Rev 1.1 Page 7 of 11 6.9 Enable (turn on) PS1 output: 6.10 Verify that the electronic load input voltage reading is a few millivolts below 3.3 V and PS1 and PS2 are sharing the load current evenly. This verifies that both MOSFET's, Q1 and Q2, are in conduction mode. 7.0 Input short circuit test 7.1 To emulate a real application, the BUS supplies for this test should have a solid output source such as DC-DC converter that supplies high current and can be connected very close to the evaluation board to reduce stray parasitic inductance. Or use the prospective supply sources of the end application where the PI2001 will be used. 7.2 Stray parasitic inductance in the circuit can contribute to significant voltage transient conditions, particularly when the MOSFET is turned-off after a reverse current fault has been detected. When a short is applied at the output of the input power sources and the . evaluation board input (Vin), a large reverse current is sourced from the evaluation board output through the ORing MOSFET. The reverse current in the MOSFET may reach over 60 A in some conditions before the MOSFET is turned off. Such high current conditions will store high energy even in a small parasitic element, and can be represented as ½ Li2. A 1 nH parasitic inductance with 60 A reverse current will generate 1.8 µJ. When the MOSFET is turned off, the stored energy will be released and will produce a high negative voltage at the MOSFET source and high positive voltage at the MOSFET drain. This event will create a high voltage difference across the drain and source of the MOSFET. 7.3 Apply a short at one of the inputs (Vin1 or Vin2) when the evaluation board is configured with both controllers (U1 and U2) in master mode. The short can be applied electronically using a MOSFET connected between Vin and Gnd or simply by connecting Vin to Gnd. Then measure the response time between when the short is applied and the MOSFET is disconnected (or turned off). An example for PI2001 response time to an input short circuit is shown in Figure 6. Figure 6 – Plot of PI2001 response time to reverse current detection Picor Corporation • www.picorpower.com P12001-EVAL1 User Guide Rev 1.1 Page 8 of 11 Figure 7a – PI2001-EVAL1 layout top layer. Scale 2.0:1 Figure 7c – PI2001-EVAL1 layout mid layer 1. Scale 2.0:1 Picor Corporation • www.picorpower.com Figure 7b – PI2001-EVAL1 layout mid layer 2. Scale 2.0:1 Figure 7d – PI2001-EVAL1 layout Bottom layer. Scale 2.0:1 P12001-EVAL1 User Guide Rev 1.1 Page 9 of 11 Mechancial Drawing 1.800 PI2001-EVAL1 Q1 Vin1 rB 9/2007 1.600 C6 C4 R3 C1 D1 R7 1.450 1.350 1.500 Vaux1 R2 R6 Gnd FT1 R4 R1 R5 1.200 Vout IC1 Rtrn1 1.100 J1 J2 0.950 0.850 SL1 C3 SL2 Q2 Vin2 R14 IC2 Vaux2 Gnd D2 FT2 Rtrn2 Picor Corporation • www.picorpower.com 0.000 1.800 0.400 0.500 0.150 0.000 0.000 Cool-ORing 1.250 J3 0.300 R9 R13 Gnd R8 R12 0.200 R11 1.650 0.450 0.350 C7 C2 C5 R10 0.600 0.700 P12001-EVAL1 User Guide Rev 1.1 Page 10 of 11 Vicor’s comprehensive line of power solutions includes high-density AC-DC & DC-DC modules and accessory components, fully configurable AC-DC & 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. No license is granted by implication or otherwise under any patent or patent rights of Vicor. 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. Picor Corporation • www.picorpower.com P12001-EVAL1 User Guide Rev 1.1 7/08