For more information, please visit the product page. rev. PART NUMBER: VPOL16A-12-SIP page 1 of 12 date 08/2007 DESCRIPTION: point of load converter features * industry standard pin out * high efficiency to 94% * 300 KHz switching frequency * 9.0-14 VDC wide input range * 0.75-5.0 VDC wide output range * over temperature protection * continuous short circuit protection * remote on/off * cost-efficient open frame design * UL/C-UL60950-1 (E222736) certified 1. INTRODUCTION 2. VPOL16A-12-SIP CONVERTER FEATURES 7. APPLICATIONS 7.1 Layout Design Challenges. 3. GENERAL DESCRIPTION 3.1 Electrical Description 7.2 Convection Requirements for Cooling 3.2 Thermal Packaging and Physical Design. 7.4 Power De-Rating Curves 4. TECHNICAL SPECIFICATIONS 7.5 Efficiency vs Load Curves 5. MAIN FEATURES AND FUNCTIONS 5.1 Operating Temperature Range 7.6 Input Capacitance at the Power Module 5.2 Over-Temperature Protection (OTP) 7.8 Remote Sense Compensation 5.3 Output Voltage Adjustment 7.8 VPOL16A-12-SIP Series Output Voltage Adustment. 5.4 Safe Operating Area (SOA) 7.9 Output Ripple and Noise Measurement 5.5 Over Current Protection 7.10 Output Capacitance 5.6 Remote ON/OFF 7.11 VPOL16A-12-SIP Reflow Profile 5.7 UVLO (Under-Voltage Lockout) 6. SAFETY 6.1 Input Fusing and Safety Considerations. 7.3 Thermal Considerations 7.7 Test Set-Up 8. MECHANICAL OUTLINE DIAGRAMS 8.1 VPOL16A-12-SIP Mechanical Outline Diagrams 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 For more information, please visit the product page. rev. PART NUMBER: VPOL16A-12-SIP page 2 of 12 date 08/2007 DESCRIPTION: point of load converter The converter is also protected against over-temperature conditions. If 1. Introduction the converter is overloaded or the ambient temperature gets too high, the converter will shut down to protect the unit. This application note describes the features and functions of CUI INC's VPOL16A-12-SIP series of Non Isolated DC-DC Converters. These are L1 Q1 +VIN +VO highly efficient, reliable and compact, high power density, single output DC/DC converters. These “Point of Load” modules serve the needs Q2 C1 specifically of the fixed and mobile telecommunications and computing D1 C2 R sense +SENSE market, employing economical distributed Power Architectures. The VPOL16A-12-SIP series provide precisely regulated output voltage range from 0.75V to 5.0Vdc over a wide range of input voltage (Vi=9.0 – COM COM 14Vdc) and can operate over an ambient temperature range of –40°C to +85°C. Ultra-high efficiency operation is achieved through the use of synchronous rectification and drive control techniques. PWM IC ON/OFF The modules are fully protected against short circuit and over- High efficiency topology, typically 94% at 5.0Vdc Industry standard footprint Wide ambient temperature range, -40°C to +85°C Cost efficient open frame design Programmable output voltage via external resistor from 0.75 to TRIM Figure 1. Electrical Block Diagram qualification program, ensure that all VPOL16A-12-SIP series 2. VPOL16A-12-SIP Converter Features R trim ERR AMP R2 temperature conditions. CUI INC's world class automated manufacturing methods, together with an extensive testing and converters are extremely reliable. R1 3.2 Thermal Packaging and Physical Design. The VPOL16A-12-SIP series uses a multi-layer FR4 PCB construction. All surface mount power components are placed on one side of the PCB, and all low-power control components are placed on the other side. Thus, the Heat dissipation of the power components is optimized, ensuring that control components are not thermally stressed. The converter is an open-frame product and has no case or case pin. The open-frame design has several advantages over encapsulated closed devices. Among these advantages are: 5.0Vdc Efficient Thermal Management: the heat is removed from the No minimum load requirement (Stable at all loads) heat generating components without heating more sensitive, small Remote ON/OFF signal control components. Remote sense compensation Environmental: Lead free open-frame converters are more easily Fixed switching frequency re-cycled. Continuous short-circuit protection and over current protection Cost Efficient: No encapsulation. Cost efficient open-frame Over-temperature protection (OTP) construction. Monotonic Startup with pre-bias at the output. Reliable: Efficient cooling provided by open frame construction UL/IEC/EN60950 Certified. offers high reliability and easy diagnostics. 3. General Description 3.1 Electrical Description A block diagram of the VPOL16A-12-SIP Series converter is shown in Figure 1. Extremely high efficiency power conversion is achieved through the use of synchronous rectification and drive techniques. Essentially, the powerful VPOL16A-12-SIP series topology is based on a non-isolated synchronous buck converter. The control loop is optimized for unconditional stability, fast transient response and a very tight line and load regulation. In a typical pre-bias application the VPOL16A-12-SIP series converters do not draw any reverse current at start-up. The output voltage can be adjusted from 0.75 to 5.0vdc, using the TRIM pin with a external resistor. The converter can be shut down via a remote ON/OFF input that is referenced to ground. This input is compatible with popular logic devices; a 'positive' logic input is supplied as standard. Positive logic implies that the converter is enabled if the remote ON/OFF input is high (or floating), and disabled if it is low. 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 For more information, please visit the product page. rev. page 3 of 12 date 08/2007 DESCRIPTION: point of load converter PART NUMBER: VPOL16A-12-SIP 4. Technical Specifications (All specifications are typical at nominal input, full load at 25°C unless otherwise noted.) Device PARAMETER NOTES and CONDITIONS ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous Operating Temp erature See Thermal Considerations Section Min. Typical Max. Units ALL 0 15 Vdc ALL -40 +85 °C ALL -55 +125 °C ALL 9.0 14 Vdc Storage Temperature INPUT CHARACTERISTICS Operating Input Voltage Input Under-Voltage Lockout Turn -On Voltag e Threshold Turn -Off Voltag e Threshold Lockout Hysteresis Voltage ALL ALL ALL ALL 12 8.0 7.7 0.3 Vdc Vdc Vdc Maximum Input Current Vin=0 to 14Vdc , Io=Io,max. No-Load Input Current Vo=0.75V Vo=1.2V Vo=1.5V Vo=1.8V Vo=2.0V Vo=2.5V Vo=3.3V Vo=5.0V ALL Off Converter Input Current Shutdown input idle current ALL 10 mA ALL 0.1 As 2 Inrush Current (I t) Input Reflected-Ripple Current 11 40 50 50 60 60 65 75 75 A mA 2 P-P thru 1uH inductor, 5Hz to 20MHz ALL 300 mA Output Voltage S et Point Vin=Nominal Vin , Io=Io.max, Tc=25 ALL -1.5% Vo,set +1.5% Vdc Output Voltage Trim Adjustment Range Selected by an extern al resistor ALL OUTPUT CHARACTERISTIC 0.75 5.0 Vdc Output Voltage Regulation Load Regulation Io=Io.min to Io.max ALL -0.5 +0.5 % Line Regulation Vin=low line to high line ALL -0.2 +0.2 % Tempera ture Coefficient Ta=-40° C to 85°C ALL -0.03 +0.03 %/°C Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth 75 mV Peak-to-Peak RMS External Capacitive Load Full Load, 1uF ceramic and 10uF tantalum ALL Full Load, 1uF ceramic and 10uF tantalum ALL 30 mV Lo w ESR ALL 8000 uF 16 A 28 A Operating Output Current Range ALL 0 18 Output DC Current-Limit Inception Output Voltage =90% Nominal Output Voltage ALL Shout Circuit Protection Continuous with Hiccup Mode ALL 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 23 For more information, please visit the product page. rev. 4 of 12 date 08/2007 DESCRIPTION: point of load converter PART NUMBER: VPOL16A-12-SIP PARAMETER DYNAMIC CHARACTERISTICS page NOTES and CONDITIONS Device Min. Typical Max. Units Output Voltage Transient Response Error Brand 50% Step Load Change, di/dt=0.1A/us ALL 200 mV Setting Time (within 1% Vout nominal) 50% Step Load Change, di/dt=0.1A/us ALL 200 us EFFICIENCY 100% Load ISOLATION CHARACTERISTICS Input to Output Vo=0.75V Vo=1.2V Vo=1.5V Vo=1.8V Vo=2.0V Vo=2.5V Vo=3.3V Vo=5.0V ALL Non-isolation ALL 77 83 86 88 89 90 92 94 % 0 Vdc FEATURE CHARACTERISTICS Switching Frequency ON/OFF Control, Positive Logic Remote On/Off Logic Low (Module Off) Logic High (Module On) ALL or Open Circuit ON/OFF Control, Negative Logic Remote On/Off Logic Low (Module On) or Open Circuit Logic High (Module Off) ON/OFF Current (for both remote on/off logic) Leakage Current (for both remote on/off logic) Turn -On Delay and Rise Time Turn -On Delay Time, From On/Off Control Turn -On Delay Time, From I nput Output Voltage Rise Time Over Temperature Protection GENERAL SPECIFICATIONS MTBF Weight Dimensions VPOL16A-12-SIP packages 300 VPOL16A-12-SIP 0 VPOL16A-12-SIP 0 2.8 Vin KHz 0.4 Vdc Vdc 0.4 Vin Vdc Vdc 1 1 mA mA Ion/off at Von/off =0.0V Logic High, Von/off=14V ALL ALL Von/off to 10 %Vo,set Vin,min. to 10%V o,set 10%Vo,set to 90 %Vo,set ALL ALL ALL ALL 3.5 3.5 3.5 130 ms ms ms °C ALL 0.98 M hours ALL 10 grams Io=100%of Io.max;Ta=2 5°C per MIL-HDBK217F 2x0.512x0.327 inches (50.8x13.0x8.3 mm) 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 For more information, please visit the product page. rev. 5 of 12 date 08/2007 DESCRIPTION: point of load converter PART NUMBER: VPOL16A-12-SIP +Vin ON/OFF Control page +Vo 7. Applications 7.1 Layout Design Challenges. Remote ON/OFF Q1 In optimizing thermal design the PCB is utilized as a heat sink. Also VPOL16A-12-SIP Common Common some heat is transferred from the VPOL16A-12-SIP module to the main board through connecting pins. The system designer or the end user must ensure that other components and metal in the vicinity of the VPOL16A-12-SIP series meet the spacing requirements to which the Figure 3. Positive Remote ON/OFF Input Drive Circuit +Vin +Vo Q1 ON/OFF Control VPOL16A-12-SIP system is approved. Low resistance and low inductance PCB layout traces are the norm and should be used where possible. Due consideration must also be given to proper low impedance tracks between power module, input and output grounds. The recommended VPOL16A-12-SIP footprint is shown as figure 5. Remote ON/OFF Common Common Figure 4. Negative Remote ON/OFF Input Drive Circuit 5.7 UVLO (Under-Voltage Lockout) The voltage on the Vcc pin determines the start of the operation of the 0.29(7.4) LAYOUT PATTERN TOP VIEW All Dimmension In Inches(mm) Tole rance : .XX= ± 0.04 .XXX= ± 0.010 0.33(8.4) 1.1mm PLATED THROUGH HOLE 1.6mm PAD SIZE Figure 5. Recommended VPOL16A-12-SIP Footprint Converter. When the input Vcc rises and exceeds about 8.0V the converter initiates a soft start. The UVLO function in the converter has a hysteresis (about 300mV) built in to provide noise immunity at start-up. 6. Safety 6.1 Input Fusing and Safety Considerations. Agency Approvals: The power Supply shall be submitted to and receive formal approval from the following test agencies. 1.The power supply shall be approved by a nationally recognized rd testing laboratory to UL/CSA 60950 3 Edition (North America) and EN60950 (International) 2. CB Certificate from an internationally recognized test house in accordance with EN 60950. The VPOL16A-12-SIP series converters do not have an internal fuse. However, to achieve maximum safety and system protection, always use an input line fuse. The safety agencies require a time-delay fuse with a maximum rating of 20A. 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 For more information, please visit the product page. rev. 6 of 12 date 08/2007 DESCRIPTION: point of load converter PART NUMBER: VPOL16A-12-SIP 7.2 Convection Requirements for Cooling To predict the ap proximate cooling needed for the module, refer to the Power De-rating curves in Figures 8 & 9 . These de-rating curves are approximations of the ambient temperatures and airflows required to keep the power module temperature below its maximum rating. Once the module is assembled in the actual system, the module’s temperature should be checked as shown in Figure 6 to ensure it does not exceed 120°C. Proper cooling can be verified by measuring the power module’s temperature at Q1-pin 6 as shown in Figure 7. W ind Tunnel page 7.3 Thermal Considerations The power module operates in a variety of thermal environments; however, sufficient cooling should be provided to help ensure reliable operation of the unit. Heat is removed by conduction, convection, and radiation to the surrounding environment. The thermal data presented is based on measurements taken in a set-up as shown in Figure 6. Figures 8 & 9 represent the test data. Note that the airflow is parallel to the long axis of the module as shown in Fig 6 for the VPOL16A-12-SIP. The temperature at either location should not exceed 120 °C. The output power of the module should not exceed the rated power for the module (VO, set x IO, max). The VPOL16A-12-SIP thermal data 25.4(1.0) presented is based on measurements taken in a wind tunnel. The test setup shown in Figure 7 and EUT need to solder on 33mm x Bakelite 40.38mm(1.300'' x 1.59'') test pcb. Note that airflow is parallel to the long axis of the module as shown in Fig 6. Power Module 76.2(3.0) Thermocuple Location for measuring ambient temperature and airflow 12.7(0.5) Air flow Note : Dimensions are in millimeters and (inches) Figure 6. Thermal Test Setup Figure 7. Temperature Measurement Location for VPOL16A12-SIP 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 For more information, please visit the product page. rev. DESCRIPTION: point of load converter PART NUMBER: VPOL16A-12-SIP TYPICAL POWER DERATING FOR 5 Vin 3.3 Vout 18 16 Output Current(A) 14 12 10 0LFM 100LFM 200LFM 300LFM 8 6 4 2 0 0 10 20 30 40 50 60 70 80 90 100 Ambient Temperature(o C) NOTE: 1. specific input & output derating curves available, please contact CUI INC for detail 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 page 7 of 12 date 08/2007 For more information, please visit the product page. rev. page 8 of 12 date 08/2007 DESCRIPTION: point of load converter PART NUMBER: VPOL16A-12-SIP 7.5 Efficiency vs Load Curves (Fig. 9) VPOL16A-12-SIP Vo=3.3V (Eff Vs Io) VPOL16A-12-SIP Vo=5.0V (Eff Vs Io) 95% 95% Efficincy (%) 100% Efficincy (%) 100% 90% 90% 85% 85% 9.0V 12V 14V 80% 75% 70% 9.0V 12V 14V 80% 75% 70% 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 0 Current Load (A) VPOL16A-12-SIP Vo=2.5V (Eff Vs Io) 100% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Current Load (A) VPOL16A-12-SIP Vo=2.0V (Eff Vs Io) 100% 95% 95% Efficincy (%) Efficincy (%) 90% 90% 85% 85% 80% 9.0V 12V 14V 80% 75% 70% 9.0V 12V 14V 75% 70% 65% 60% 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Current Load (A) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Current Load (A) 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 For more information, please visit the product page. rev. page 9 of 12 date 08/2007 DESCRIPTION: point of load converter PART NUMBER: VPOL16A-12-SIP VPOL16A-12-SIP Vo=1.8V (Eff Vs Io) VPOL16A-12-SIP Vo=1.5V (Eff Vs Io) 95% 95% 90% 90% 85% Efficincy (%) 100% Efficincy (%) 100% 85% 80% 80% 9.0V 12V 14V 75% 70% 65% 60% 9.0V 12V 14V 75% 70% 65% 60% 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 0 Current Load (A) VPOL16A-12-SIP Vo=1.2V (Eff Vs Io) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Current Load (A) VPOL16A-12-SIP Vo=0.75V (Eff Vs Io) 100% 100% 95% 95% 90% 90% Efficincy (%) Efficincy (%) 85% 85% 80% 80% 75% 9.0V 12V 14V 75% 70% 65% 60% 70% 9.0V 12V 14V 65% 60% 55% 50% 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Current Load (A) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Current Load (A) 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 For more information, please visit the product page. rev. Where: 7.6 Input Capacitance at the Power Module The VPOL16A-12-SIP converters must be connected to a low AC source impedance. To avoid probl ems with loop stability source However, the external input capacitors are chosen for suitable ripple handling capability. Low ESR polymers are a good choice. They have Line.reg= VLL is the output voltage of minimum input voltage at full load. high capacitance, high ripple rating and low ESR (typical <100mohm). Current Meter A represents typical measurement methods for ripple current. Input reflected-ripple current is measured with a simulated source Inductance of 1uH. Current is measured at the input of the module. Power Supply +Vin +Sense V 100uF Voltage Meter VPOL16A-12-SIP Common +Vin 2*100uF Tantalum A +Vo + To Oscilloscope Supply VHL _ VLL x 100% VLL Where: VHL is the output voltage of maximum input voltage at full load. Electrolytic capacitors should be avoided. Circuit as shown in Figure 10 + 08/2007 The value of line regulation is defined as: close to the converter input pins to de-couple distribution inductance. Power date VFL is the output voltage at full load VNL is the output voltage at no load inductance should be low. Also, the input capacitors should be placed 1uH 10 of 12 DESCRIPTION: point of load converter PART NUMBER: VPOL16A-12-SIP L1 page V Load Common Figure 11. VPOL16A-12-SIP Series Test Setup 7.8 Remote Sense Compensation VPOL16A-12-SIP 220uF ESR<0.1ohm Remote Sense regulates the output voltage at the point of load. It minimizes the effects of distribution losses such as drops across the connecting pin and PCB tracks (see Figure 12). Please note however, the maximum drop from the output pin to the point of load should not Common Figure 10. Input Reflected-Ripple Test Setup 7.7 Test Set-Up The basic test set-up to measure parameters such as efficiency and load regulation is shown in Figure 11. Things to note are that this converter is non-isolated, as such the input and output share a common ground. These grounds should be connected together via low impedance ground plane in the application circuit. When testing a converter on a bench set-up, ensure that -Vin and -Vo are connected exceed 500mV for remote compensation to work. The amount of power delivered by the module is defined as the output voltage multiplied by the output current (VO x IO). When using TRIM UP, the output voltage of the module will increase which, if the same output current is maintained, increases the power output by the module. Make sure that the maximum output power of the module remains at or below the maximum rated power. When the Remote Sense feature is not being used, leave sense pin disconnected. Figure 12. Circuit Configuration for Remote Sense Operation together via a low impedance short to ensure proper efficiency and load regulation measurements are being made. When testing the CUI INC's VPOL16A-12-SIP series under any transient conditions please ensure that the transient response of the source is sufficient to power the equipment under test. We can calculate the Efficiency Distribution Losses +Vin Load regulation and line regulation. +Vo +Sense The value of efficiency is defined as: R-Load Vo x Io x 100% ç= Vin x Iin Common Where: Vo is output voltage, Common Distribution Losses Io is output current, Vin is input voltage, Iin is input current. The value of load regulation is defined as: Load .reg= VFL _ VNL x 100% VNL 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 For more information, please visit the product page. rev. page 11 of 12 date 08/2007 DESCRIPTION: point of load converter PART NUMBER: VPOL16A-12-SIP 7.8 VPOL16A-12-SIP Series Output Voltage Adustment. 7.9 Output Ripple and Noise Measurement The test set-up for noise and ripple measurements is shown in Figure The output Voltage of the VPOL16A-12-SIP can be adjusted in the 14. a coaxial cable with a 50ohm termination was used to prevent range 0.75V to 5.0V by connecting a single resistor on the motherboard impedance mismatch reflections disturbing the noise readings at higher (shown as Rtrim) in Figure 13. When Trim resistor is not connected the frequencies. output voltage defaults to 0.75V +Vin +Vin +Vo Common 1uF Ceramic R-Load Test Jack R-Load Common Common R trim-up Figure 14. Output Voltage Ripple and Noise Measurement Set-Up Common Figure 13. Trim-up Voltage Setup The value of Rtrim-up defined as: 7.10 Output Capacitance CUI INC's VPOL16A-12-SIP series converters provide unconditional stability with or without external capacitors. For good transient response 10500 _ Rtrim = ( _ 1000 ) Vo 0.75 Where: 10uF Tant. VPOL16A-12-SIP Trim VPOL16A-12-SIP +Vo Rtrim-up is the external resistor in ohm, Vo is the desired output voltage low ESR output capacitors should be located close to the point of load. For high current applications point has already been made in layout considerations for low resistance and low inductance tracks. Output capacitors with its associated ESR values have an impact on loop stability and bandwidth. CUI INC's converters are designed to work with load capacitance up-to 8,000uF. It is reco mmended that any To give an exa mple of the above calculation, to set a voltage of 3.3Vdc, additional capacitance, Maximum 8,000uF and low ESR, be connected Rtrim is given by: close to the point of load and outside the remote compensation point. Rtrim = ( 10500 _ 1000 ) _ 3.3 0.75 Rtrim = 3117 ohm 7.11 VPOL16A-12-SIP Reflow Profile An example of the VPOL16A-12-SIP reflow profile is given in Figure 15. Equipment used: SMD HOT AIR REFLOW HD-350SAR Alloy: AMQ-M293TA or N C-SMQ92 IND-82088 SN63 For various output values various resistors are calculated and provided Rtrim (Kohm) Open 22.33 13.0 9.0 7.4 5.0 3.12 1.47 Table 3 – Trim Resistor Values 200 TEMPERATURE (C) Vo,set (V) 0.75 1.20 1.50 1.80 2.00 2.50 3.30 5.0 REFLOW PROFILE 240 in Table 3 for co nvenience. 160 120 80 40 0 0 30 60 90 120 150 180 210 240 TIME (SECONDS) Figure 15 VPOL16A-12-SIP Reflow Profile 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 For more information, please visit the product page. rev. page 12 of 12 date 08/2007 DESCRIPTION: point of load converter PART NUMBER: VPOL16A-12-SIP 8. Mechanical Outline Diagrams 8.1 VPOL16A-12-SIP Mechanical Outline Diagrams Dimensions are in millimeters and inches Tolerance: x.xx ±0.02 in. (0.5mm) , x.xxx ±0.010 in. (0.25 mm) unless otherwise noted Pin Connection SIZE VPOL16A-12-SIP 2.00(50.8) 0.100(2.54) 0.010(0.25) min. 0.025(0.64) 1.000(25.40) 0.400(10.20) 0.23(5.8) 6 7 8 9 10 11 1 2 3 4 5 0.14(3.6) 0.327(8.30)max. 0.512(13.00) 0.050(1.30) 0.28(7.1) 0.025(0.64) Pin 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Function +output +output +sense +output common common +v input +v input no pin trim on/off control Figure 19 VPOL16A-12-SIP Mechanical Outline Diagram 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382