THD 12-WI Series Application Note DC/DC Converter 9 to 36Vdc or 18 to 75 Vdc input voltage 3.3 to 15 Vdc Single Output and ±5 to ±15 Vdc Dual Output 12Watts Output Power Features • RoHS compliant • Single output up to 3.5A • Dual Output up to ±1.2A • Standard 24 PIN DIP • Five-sided continuous shield • No minimum load required • High power density • High efficiency up to 88% • Small size 31.8Î20.3Î10.4mm (1.25Î0.8Î0.450 inch) • Input to output isolation (1500VDC / 60 seconds) • 4:1 ultra wide input voltage range • Fixed switching frequency • Input under-voltage protection • Output over-voltage protection • Over-current protection • Output short circuit protection • Remote on/off E188913 Applications • Distributed power architectures • Workstations • Computer equipment • Communications equipment Complete THD 12-WI datasheet can be downloaded at: http://www.tracopower.com/products/thd12WI.pdf General Description The THD 12-WIseries offer 12 watts of output power from a package in an IC compatible 24pin DIP. THD 12-WI series have 4:1 ultra wide input voltage of 9-36VDC, 18-75VDC. THD 12-WI series features 1500VDC of isolation, short circuit protection and five sided shielding. All models are particularly suited to telecommunications, industrial, mobile telecom and test equipment applications. Table of contents Absolute Maximum Rating Output Specification Input Specification General Specification Characteristic Curves Test Configurations EMC Considerations Input Source Impedance Output Over Current Protection Output Over Voltage Protection Created by Traco Electronic AG Arp. P2 P2 P3 P4 P5 - P32 P33 P34 & P35 P36 P36 P36 Thermal Consideration Remote ON/OFF Control Mechanical Data Recommended Pad Layout Soldering and Reflow Consideration Packaging Information Part Number Structure Safety and Installation Instruction MTBF and Reliability www.tracopower.com P36 P37 P38 P38 P39 P39 P40 P40 P40 Date: June 24th, 2008 / Rev.: 1.1 / Page 1 / 40 Application Note 12W SINGLE & DUAL OUTPUT Absolute Maximum Rating Parameter Model Input Voltage Continuous Transient (100ms) Max Unit THD 12-24xxWI THD 12-48xxWI THD 12-24xxWI THD 12-48xxWI 40 80 50 100 Vdc V Vdc V All 5 V/ms 85 105 125 °C °C °C Input Voltage Variation (complies with EST300 132 part 4.4) Operating Ambient Temperature (with derating) Operating Case Temperature Storage Temperature All All All Min -40 -55 Output Specification Parameter Output Voltage (Vin = Vin nom; Full Load; TA = 25°C) Output Regulation Line (Vin min to Vin max at Full Load) Load (0% to 100% of Full Load) DIP type Output Ripple & Noise (see page 21) Peak-to-Peak (5Hz to 20MHz bandwidth) Temperature Coefficient Output Voltage Overshoot (Vin = Vin min to Vin max; Full Load ; TA = 25°C) Dynamic Load Response (Vin = Vin nom; TA = 25°C) Load step change from 75% to 100% or 100 to 75% of Full Load Peak Deviation Setting Time (Vo< 10% peak deviation) Output Current Output Over Voltage Protection (only Single Output; Zener diode clamp) Output Over Current Protection Output Short Circuit Protection Created by Traco Electronic AG Arp. Model THD 12-xx10WI THD 12-xx11WI THD 12-xx12WI THD 12-xx13WI THD 12-xx21WI THD 12-xx22WI THD 12-xx23WI Min 3.260 5.039 11.856 14.820 ±4.940 ±11.856 ±14.820 All -0.2 -0.5 Typ 3.3 5.1 12 15 ±5.0 ±12.0 ±15.0 All All All 0 All All 200 250 THD 12-xx10WI THD 12-xx11WI THD 12-xx12WI THD 12-xx13WI THD 12-xx21WI THD 12-xx22WI THD 12-xx23WI THD 12-xx10WI THD 12-xx11WI THD 12-xx12WI THD 12-xx13WI All All www.tracopower.com -0.02 0 0 0 0 0 0 0 Max 3.340 5.161 12.144 15.180 ±5.060 ±12.144 ±15.180 Unit +0.2 +0.5 % 85 mV pk-pk +0.02 %/°C 3 % Vout Vdc mV µs 3500 2400 1000 800 ±1200 ±500 ±400 mA 3.9 6.2 Vdc 15 18 150 % FL. Continuous, automatics recovery Date: June 24th, 2008 / Rev.: 1.1 / Page 2 / 40 Application Note 12W SINGLE & DUAL OUTPUT Input Specification Parameter Model THD 12-24xxWI THD 12-48xxWI Operating Input Voltage Input Current (Maximum value at Vin = Vin nom; Full Load) THD 12-2410WI THD 12-2411WI THD 12-2412WI THD 12-2413WI THD 12-2421WI THD 12-2422WI THD 12-2423WI THD 12-4810WI THD 12-4811WI THD 12-4812WI THD 12-4813WI THD 12-4821WI THD 12-4822WI THD 12-4823WI THD 12-2410WI THD 12-2411WI THD 12-2412WI THD 12-2413WI THD 12-2421WI THD 12-2422WI THD 12-2423WI THD 12-4810WI THD 12-4811WI THD 12-4812WI THD 12-4813WI THD 12-4821WI THD 12-4822WI THD 12-4823WI THD 12-24xxWI THD 12-48xxWI Input Standby current (Typical value at Vin = Vin nom; No Load) Under Voltage Lockout Turn-on Threshold Under Voltage Lockout Turn-off Threshold Typ 24 48 610 301 307 302 298 Vdc mA 309 301 301 55 55 25 25 20 25 25 mA 20 20 13 13 10 13 13 All 20 www.tracopower.com Unit 610 THD 12-24xxWI THD 12-48xxWI All All Max 36 75 602 614 610 610 625 9 18 8 16 Input reflected ripple current (see page 21) (5 to 20MHz, 12µH source impedance) Start Up Time (Vin = Vin nom and constant resistive load) Power up Remote ON/OFF Remote ON/OFF Control (see page 25) (The On/Off pin voltage is referenced to negative input) On/Off pin High Voltage (Remote ON) On/Off pin Low Voltage (Remote OFF) On/Off pin Low Voltage, input current Created by Traco Electronic AG Arp. Min 9 18 Vdc Vdc mA pk-pk ms 450 5 3.0 0 12 1.2 2.5 Vdc Vdc mA Date: June 24th, 2008 / Rev.: 1.1 / Page 3 / 40 Application Note 12W SINGLE & DUAL OUTPUT General Specification Parameter Efficiency (see page 21) (Vin = Vin nom; Full Load; TA = 25°C) Model THD 12-2410WI THD 12-2411WI THD 12-2412WI THD 12-2413WI THD 12-2421WI THD 12-2422WI THD 12-2423WI THD 12-4810WI THD 12-4811WI THD 12-4812WI THD 12-4813WI THD 12-4821WI THD 12-4822WI THD 12-4823WI Min All 1500 Isolation voltage 60 seconds Input to Output DIP TYPE Input to Case, Output to Case DIP TYPE Isolation resistance Isolation capacitance Switching Frequency Weight MTBF Bellcore TR-NWT-000332, TC = 40°C MIL-STD-217F Created by Traco Electronic AG Arp. All All All All All www.tracopower.com Typ 84.0 87.0 86.0 86.0 Max Unit 84.0 86.0 86.0 % 84.0 87.0 87.0 88.0 85.0 87.0 87.0 Vdc 1500 1 1500 400 18.0 2’350’000 875’000 GO pF KHz g hours Date: June 24th, 2008 / Rev.: 1.1 / Page 4 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-2410WI Efficiency versus Output Current Efficiency versus Input Voltage. Full Load Derating Output Current versus Ambient Temperature and Airflow Vin = Vin nom Created by Traco Electronic AG Arp. www.tracopower.com Typical Output Ripple and Noise. Vin = Vin nom; Full Load Transient Response to Dynamic Load Change from 100% to 75% to 100% of Full Load ; Vin = Vin nom Typical Input Start-Up and Output Rise Characteristic Vin = Vin nom; Full Load Date: June 24th, 2008 / Rev.: 1.1 / Page 5 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-2410WI (Continued) Conduction Emission of EN55022 Class A Vin = Vin nom; Full Load Using ON/OFF Voltage Start-Up and Vout Rise Characteristic Vin = Vin nom; Full Load Conduction Emission of EN55022 Class B Vin = Vin nom; Full Load Power Dissipation versus Output Current Created by Traco Electronic AG Arp. www.tracopower.com Date: June 24th, 2008 / Rev.: 1.1 / Page 6 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-2411WI Efficiency versus Output Current Efficiency versus Input Voltage. Full Load Derating Output Current versus Ambient Temperature and Airflow Vin = Vin nom Created by Traco Electronic AG Arp. www.tracopower.com Typical Output Ripple and Noise. Vin = Vin nom; Full Load Transient Response to Dynamic Load Change from 100% to 75% to 100% of Full Load ; Vin = Vin nom Typical Input Start-Up and Output Rise Characteristic Vin = Vin nom; Full Load Date: June 24th, 2008 / Rev.: 1.1 / Page 7 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-2411WI (Continued) Conduction Emission of EN55022 Class A Vin = Vin nom; Full Load Using ON/OFF Voltage Start-Up and Vout Rise Characteristic Vin = Vin nom; Full Load Conduction Emission of EN55022 Class B Vin = Vin nom; Full Load Power Dissipation versus Output Current Created by Traco Electronic AG Arp. www.tracopower.com Date: June 24th, 2008 / Rev.: 1.1 / Page 8 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-2412WI Efficiency versus Output Current Efficiency versus Input Voltage. Full Load Derating Output Current versus Ambient Temperature and Airflow Vin = Vin nom Created by Traco Electronic AG Arp. www.tracopower.com Typical Output Ripple and Noise. Vin = Vin nom; Full Load Transient Response to Dynamic Load Change from 100% to 75% to 100% of Full Load ; Vin = Vin nom Typical Input Start-Up and Output Rise Characteristic Vin = Vin nom; Full Load Date: June 24th, 2008 / Rev.: 1.1 / Page 9 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-2412WI (Continued) Conduction Emission of EN55022 Class A Vin = Vin nom; Full Load Using ON/OFF Voltage Start-Up and Vout Rise Characteristic Vin = Vin nom; Full Load Conduction Emission of EN55022 Class B Vin = Vin nom; Full Load Power Dissipation versus Output Current Created by Traco Electronic AG Arp. www.tracopower.com Date: June 24th, 2008 / Rev.: 1.1 / Page 10 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-2413WI Efficiency versus Output Current Efficiency versus Input Voltage. Full Load Derating Output Current versus Ambient Temperature and Airflow Vin = Vin nom Created by Traco Electronic AG Arp. www.tracopower.com Typical Output Ripple and Noise. Vin = Vin nom; Full Load Transient Response to Dynamic Load Change from 100% to 75% to 100% of Full Load ; Vin = Vin nom Typical Input Start-Up and Output Rise Characteristic Vin = Vin nom; Full Load Date: June 24th, 2008 / Rev.: 1.1 / Page 11 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-2413WI (Continued) Conduction Emission of EN55022 Class A Vin = Vin nom; Full Load Using ON/OFF Voltage Start-Up and Vout Rise Characteristic Vin = Vin nom; Full Load Conduction Emission of EN55022 Class B Vin = Vin nom; Full Load Power Dissipation versus Output Current Created by Traco Electronic AG Arp. www.tracopower.com Date: June 24th, 2008 / Rev.: 1.1 / Page 12 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-2421WI Efficiency versus Output Current Efficiency versus Input Voltage. Full Load Derating Output Current versus Ambient Temperature and Airflow Vin = Vin nom Created by Traco Electronic AG Arp. www.tracopower.com Typical Output Ripple and Noise. Vin = Vin nom; Full Load Transient Response to Dynamic Load Change from 100% to 75% to 100% of Full Load ; Vin = Vin nom Typical Input Start-Up and Output Rise Characteristic Vin = Vin nom; Full Load Date: June 24th, 2008 / Rev.: 1.1 / Page 13 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-2421WI (Continued) Conduction Emission of EN55022 Class A Vin = Vin nom; Full Load Using ON/OFF Voltage Start-Up and Vout Rise Characteristic Vin = Vin nom; Full Load Conduction Emission of EN55022 Class B Vin = Vin nom; Full Load Power Dissipation versus Output Current Created by Traco Electronic AG Arp. www.tracopower.com Date: June 24th, 2008 / Rev.: 1.1 / Page 14 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-2422WI Efficiency versus Output Current Efficiency versus Input Voltage. Full Load Derating Output Current versus Ambient Temperature and Airflow Vin = Vin nom Created by Traco Electronic AG Arp. www.tracopower.com Typical Output Ripple and Noise. Vin = Vin nom; Full Load Transient Response to Dynamic Load Change from 100% to 75% to 100% of Full Load ; Vin = Vin nom Typical Input Start-Up and Output Rise Characteristic Vin = Vin nom; Full Load Date: June 24th, 2008 / Rev.: 1.1 / Page 15 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-2422WI (Continued) Conduction Emission of EN55022 Class A Vin = Vin nom; Full Load Using ON/OFF Voltage Start-Up and Vout Rise Characteristic Vin = Vin nom; Full Load Conduction Emission of EN55022 Class B Vin = Vin nom; Full Load Power Dissipation versus Output Current Created by Traco Electronic AG Arp. www.tracopower.com Date: June 24th, 2008 / Rev.: 1.1 / Page 16 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-2423WI Efficiency versus Output Current Efficiency versus Input Voltage. Full Load Derating Output Current versus Ambient Temperature and Airflow Vin = Vin nom Created by Traco Electronic AG Arp. www.tracopower.com Typical Output Ripple and Noise. Vin = Vin nom; Full Load Transient Response to Dynamic Load Change from 100% to 75% to 100% of Full Load ; Vin = Vin nom Typical Input Start-Up and Output Rise Characteristic Vin = Vin nom; Full Load Date: June 24th, 2008 / Rev.: 1.1 / Page 17 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-2423WI (Continued) Conduction Emission of EN55022 Class A Vin = Vin nom; Full Load Using ON/OFF Voltage Start-Up and Vout Rise Characteristic Vin = Vin nom; Full Load Conduction Emission of EN55022 Class B Vin = Vin nom; Full Load Power Dissipation versus Output Current Created by Traco Electronic AG Arp. www.tracopower.com Date: June 24th, 2008 / Rev.: 1.1 / Page 18 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-4810WI Efficiency versus Output Current Efficiency versus Input Voltage. Full Load Derating Output Current versus Ambient Temperature and Airflow Vin = Vin nom Created by Traco Electronic AG Arp. www.tracopower.com Typical Output Ripple and Noise. Vin = Vin nom; Full Load Transient Response to Dynamic Load Change from 100% to 75% to 100% of Full Load ; Vin = Vin nom Typical Input Start-Up and Output Rise Characteristic Vin = Vin nom; Full Load Date: June 24th, 2008 / Rev.: 1.1 / Page 19 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-4810WI (Continued) Conduction Emission of EN55022 Class A Vin = Vin nom; Full Load Using ON/OFF Voltage Start-Up and Vout Rise Characteristic Vin = Vin nom; Full Load Conduction Emission of EN55022 Class B Vin = Vin nom; Full Load Power Dissipation versus Output Current Created by Traco Electronic AG Arp. www.tracopower.com Date: June 24th, 2008 / Rev.: 1.1 / Page 20 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-4811WI Efficiency versus Output Current Efficiency versus Input Voltage. Full Load Derating Output Current versus Ambient Temperature and Airflow Vin = Vin nom Created by Traco Electronic AG Arp. www.tracopower.com Typical Output Ripple and Noise. Vin = Vin nom; Full Load Transient Response to Dynamic Load Change from 100% to 75% to 100% of Full Load ; Vin = Vin nom Typical Input Start-Up and Output Rise Characteristic Vin = Vin nom; Full Load Date: June 24th, 2008 / Rev.: 1.1 / Page 21 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-4811WI (Continued) Conduction Emission of EN55022 Class A Vin = Vin nom; Full Load Using ON/OFF Voltage Start-Up and Vout Rise Characteristic Vin = Vin nom; Full Load Conduction Emission of EN55022 Class B Vin = Vin nom; Full Load Power Dissipation versus Output Current Created by Traco Electronic AG Arp. www.tracopower.com Date: June 24th, 2008 / Rev.: 1.1 / Page 22 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-4812WI Efficiency versus Output Current Efficiency versus Input Voltage. Full Load Derating Output Current versus Ambient Temperature and Airflow Vin = Vin nom Created by Traco Electronic AG Arp. www.tracopower.com Typical Output Ripple and Noise. Vin = Vin nom; Full Load Transient Response to Dynamic Load Change from 100% to 75% to 100% of Full Load ; Vin = Vin nom Typical Input Start-Up and Output Rise Characteristic Vin = Vin nom; Full Load Date: June 24th, 2008 / Rev.: 1.1 / Page 23 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-4812WI (Continued) Conduction Emission of EN55022 Class A Vin = Vin nom; Full Load Using ON/OFF Voltage Start-Up and Vout Rise Characteristic Vin = Vin nom; Full Load Conduction Emission of EN55022 Class B Vin = Vin nom; Full Load Power Dissipation versus Output Current Created by Traco Electronic AG Arp. www.tracopower.com Date: June 24th, 2008 / Rev.: 1.1 / Page 24 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-4813WI Efficiency versus Output Current Efficiency versus Input Voltage. Full Load Derating Output Current versus Ambient Temperature and Airflow Vin = Vin nom Created by Traco Electronic AG Arp. www.tracopower.com Typical Output Ripple and Noise. Vin = Vin nom; Full Load Transient Response to Dynamic Load Change from 100% to 75% to 100% of Full Load ; Vin = Vin nom Typical Input Start-Up and Output Rise Characteristic Vin = Vin nom; Full Load Date: June 24th, 2008 / Rev.: 1.1 / Page 25 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-4813WI(Continued) Conduction Emission of EN55022 Class A Vin = Vin nom; Full Load Using ON/OFF Voltage Start-Up and Vout Rise Characteristic Vin = Vin nom; Full Load Conduction Emission of EN55022 Class B Vin = Vin nom; Full Load Power Dissipation versus Output Current Created by Traco Electronic AG Arp. www.tracopower.com Date: June 24th, 2008 / Rev.: 1.1 / Page 26 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-4821WI Efficiency versus Output Current Efficiency versus Input Voltage. Full Load Derating Output Current versus Ambient Temperature and Airflow Vin = Vin nom Created by Traco Electronic AG Arp. www.tracopower.com Typical Output Ripple and Noise. Vin = Vin nom; Full Load Transient Response to Dynamic Load Change from 100% to 75% to 100% of Full Load ; Vin = Vin nom Typical Input Start-Up and Output Rise Characteristic Vin = Vin nom; Full Load Date: June 24th, 2008 / Rev.: 1.1 / Page 27 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-4821WI (Continued) Conduction Emission of EN55022 Class A Vin = Vin nom; Full Load Using ON/OFF Voltage Start-Up and Vout Rise Characteristic Vin = Vin nom; Full Load Conduction Emission of EN55022 Class B Vin = Vin nom; Full Load Power Dissipation versus Output Current Created by Traco Electronic AG Arp. www.tracopower.com Date: June 24th, 2008 / Rev.: 1.1 / Page 28 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-4822WI Efficiency versus Output Current Efficiency versus Input Voltage. Full Load Derating Output Current versus Ambient Temperature and Airflow Vin = Vin nom Created by Traco Electronic AG Arp. www.tracopower.com Typical Output Ripple and Noise. Vin = Vin nom; Full Load Transient Response to Dynamic Load Change from 100% to 75% to 100% of Full Load ; Vin = Vin nom Typical Input Start-Up and Output Rise Characteristic Vin = Vin nom; Full Load Date: June 24th, 2008 / Rev.: 1.1 / Page 29 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-4822WI (Continued) Conduction Emission of EN55022 Class A Vin = Vin nom; Full Load Using ON/OFF Voltage Start-Up and Vout Rise Characteristic Vin = Vin nom; Full Load Conduction Emission of EN55022 Class B Vin = Vin nom; Full Load Power Dissipation versus Output Current Created by Traco Electronic AG Arp. www.tracopower.com Date: June 24th, 2008 / Rev.: 1.1 / Page 30 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-4823WI Efficiency versus Output Current Efficiency versus Input Voltage. Full Load Derating Output Current versus Ambient Temperature and Airflow Vin = Vin nom Created by Traco Electronic AG Arp. www.tracopower.com Typical Output Ripple and Noise. Vin = Vin nom; Full Load Transient Response to Dynamic Load Change from 100% to 75% to 100% of Full Load ; Vin = Vin nom Typical Input Start-Up and Output Rise Characteristic Vin = Vin nom; Full Load Date: June 24th, 2008 / Rev.: 1.1 / Page 31 / 40 Application Note 12W SINGLE & DUAL OUTPUT Characteristic Curves All test conditions are at 25°C. The figures are identical for THD 12-4823WI (Continued) Conduction Emission of EN55022 Class A Vin = Vin nom; Full Load Using ON/OFF Voltage Start-Up and Vout Rise Characteristic Vin = Vin nom; Full Load Conduction Emission of EN55022 Class B Vin = Vin nom; Full Load Power Dissipation versus Output Current Created by Traco Electronic AG Arp. www.tracopower.com Date: June 24th, 2008 / Rev.: 1.1 / Page 32 / 40 Application Note 12W SINGLE & DUAL OUTPUT Testing Configurations Input reflected-ripple current measurement test up Component L C Value 12µH 47µF Voltage ---100V Reference ---Aluminum Electrolytic Capacitor Peak-to-peak output ripple & noise measurement test up Output voltage and efficiency measurement test up Note: All measurements are taken at the module terminals. V × Io × 100% Efficiency = o Vin × I in Created by Traco Electronic AG Arp. www.tracopower.com Date: June 24th, 2008 / Rev.: 1.1 / Page 33 / 40 Application Note 12W SINGLE & DUAL OUTPUT EMC considerations Suggested Schematic for EN55022 Conducted Emission Class A Limits recommended Layout With Input Filter To meet conducted emissions EN55022 CLASS A needed the following components: THD 12-24xxWI Component C1 C2, C3 Value 1µF 1000pF Voltage 50V 2KV 1210 MLCC 1206 MLCC Reference Component C1 C2, C3 Value 0.47µF 1000pF Voltage 100V 2KV 1812 MLCC 1206 MLCC THD 12-48xxWI Created by Traco Electronic AG Arp. www.tracopower.com Reference Date: June 24th, 2008 / Rev.: 1.1 / Page 34 / 40 Application Note 12W SINGLE & DUAL OUTPUT EMC considerations (Continued) Suggested Schematic for EN55022 Conducted Emission Class B Limits recommended Layout With Input Filter To meet conducted emissions EN55022 CLASS B needed the following components: THD 12-24xxWI Component Value Voltage Reference C1 4.7µF 50V 1812 MLCC C3, C4 1000pF 2KV 1206 MLCC L1 325µH ---Common Choke, P/N: TCK-050 THD 12-48xxWI Component C1, C2 C3, C4 L1 Created by Traco Electronic AG Arp. Value 1.5µF 1000pF 325µH Voltage 100V 2KV ---- www.tracopower.com Reference 1812 MLCC 1206 MLCC Common Choke, P/N: TCK-050 Date: June 24th, 2008 / Rev.: 1.1 / Page 35 / 40 Application Note 12W SINGLE & DUAL OUTPUT Input Source Impedance The power module should be connected to a low impedance input source. Highly inductive source impedance can affect the stability of the power module. Input external L-C filter is recommended to minimize input reflected ripple current. The inductor is simulated source impedance of 12µH and capacitor is Nippon chemi-con KZE series 47µF/100V. The capacitor must as close as possible to the input terminals of the power module for lower impedance. Output Over Current Protection When excessive output currents occur in the system, circuit protection is required on all power supplies. Normally, overload current is maintained at approximately about 150 percent of rated current for THD 12-WI series. Fold back-mode is a method of operation in a power supply whose purpose is to protect the power supply from being damaged during an over-current fault condition. It also enables the power supply to operate normally when the fault is removed. One of the problems resulting from over current is that excessive heat may be generated in power devices; especially MOSFET and Schottky diodes and the temperature of those devices may exceed their specified limits. A protection mechanism has to be used to prevent those power devices from being damaged. The operation of fold back is as follows. When the current sense circuit sees an over-current event, the output voltage of the module will be decreased for low power dissipation and decrease the heat of the module. Output Over Voltage Protection The output over-voltage protection consists of output Zener diode that monitors the voltage on the output terminals. If the voltage on the output terminals exceeds the over-voltage protection threshold, then the Zener diode clamps the output voltage. Thermal Consideration 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. Proper cooling can be verified by measuring the point as the figure below. The temperature at this location should not exceed 105°C. When Operating, adequate cooling must be provided to maintain the test point temperature at or below 105°C. Although the maximum point Temperature of the power modules is 105°C, you can limit this Temperature to a lower value for extremely high reliability. Measurement shown in inches and (millimeters) Created by Traco Electronic AG Arp. TOP VIEW www.tracopower.com Date: June 24th, 2008 / Rev.: 1.1 / Page 36 / 40 Application Note 12W SINGLE & DUAL OUTPUT Remote ON/OFF Control The positive logic remote ON/OFF control circuit is included. Turns the module ON during a logic High on the On/Off pin and turns OFF during a logic Low. The On/Off pin is an open collector/drain logic input signal (Von/off) that referenced to GND. If not using the remote on/off feature, please open circuit between on/off pin and -Vin pin to turn the module on. Remote ON/OFF Implementation Isolated-Closure Remote ON/OFF Level Control Using TTL Output Level Control Using Line Voltage Created by Traco Electronic AG Arp. www.tracopower.com Date: June 24th, 2008 / Rev.: 1.1 / Page 37 / 40 Application Note 12W SINGLE & DUAL OUTPUT Mechanical Data DIP TYPE Pin size is 0.02(0.5) Dia or 0.01 x 0.02 (0.25 x 0.50) Rectangular Pin 0.08(2.0) 16 9 14 11 0.60(15.2) PIN 1 2 3 0.20 (5.1) 1.25 (31.8) BOTTOM VIEW 0.80 (20.3) 1 2 3 23 22 9 11 0.15 (3.8) PIN CONNECTION Define PIN Define CTRL -INPUT 23 +INPUT -INPUT 22 +INPUT NC NC 16 14 -OUTPUT +OUTPUT 0.40 (10.2) 0.80(20.3) 1. All dimensions in Inches (mm) Tolerance : x.xx±0.02 (x.x±0.5) 2.Pin pitch tolerance ±0.014(0.35) Recommended Pad Layout DIP TYPE 1. All dimensions in Inches (mm) 2. Pin pitch tolerance ±0.35mm 3. Tolerance: x.xx±0.02 (x.x±0.5) x.xxx±0.01 (x.xx±0.25) Created by Traco Electronic AG Arp. www.tracopower.com Date: June 24th, 2008 / Rev.: 1.1 / Page 38 / 40 Application Note 12W SINGLE & DUAL OUTPUT Soldering and Reflow Considerations Lead free wave solder profile for THD 12-WI DIP type Zone Preheat zone Reference Parameter Rise temp. speed: 3°C/ sec max. Preheat temperature: 100~130°C Peak temperature: 250~260°C Peak time (T1+T2 time): 4~6 sec Actual heating Reference Solder: Sn-Ag-Cu ; Sn-Cu Hand Welding : Soldering iron: Power 90W Welding Time: 2~4 sec Temperature: 380~400°C Packaging Information 10 Pcs THD 12-xxxxWI Converters per Tube Created by Traco Electronic AG Arp. www.tracopower.com Date: June 24th, 2008 / Rev.: 1.1 / Page 39 / 40 Application Note 12W SINGLE & DUAL OUTPUT Part Number Structure THD 12 – 48 W 05 Max Output Power: 12 Watt Output Voltage 10 : 3.3Vdc 11 : 5.1Vdc 12 : 12Vdc 13 : 15Vdc 21 : ±5Vdc 22 : ±12Vdc 23 : ±15Vdc Input Voltage Range 24 : 9 ~ 36Vdc 48 : 18 ~ 75Vdc Model Number Input Range Output Voltage Output Current Input Current Max. Load Full Load THD 12-2410WI THD 12-2411WI THD 12-2412WI THD 12-2413WI THD 12-2421WI THD 12-2422WI THD 12-2423WI THD 12-4810WI THD 12-4811WI THD 12-4812WI THD 12-4813WI THD 12-4821WI THD 12-4822WI THD 12-4823WI 9 – 36 Vdc 9 – 36 Vdc 9 – 36 Vdc 9 – 36 Vdc 9 – 36 Vdc 9 – 36 Vdc 9 – 36 Vdc 18 – 75 Vdc 18 – 75 Vdc 18 – 75 Vdc 18 – 75 Vdc 18 – 75 Vdc 18 – 75 Vdc 18 – 75 Vdc 3.3 Vdc 5.1 Vdc 12 Vdc 15 Vdc ±5.0Vdc ±12.0Vdc ±15.0Vdc 3.3 VDC 5.1 VDC 12 VDC 15 VDC ±5.0Vdc ±12.0Vdc ±15.0Vdc 3500mA 2400mA 1000mA 800mA ± 1200mA ± 500mA ± 400mA 3500mA 2400mA 1000mA 800mA ± 1200mA ± 500mA ± 400mA 602mA 614mA 610mA 610mA 625mA 610mA 610mA 301mA 307mA 302mA 298mA 309mA 301mA 301mA (1) Efficiency (%) (2) 84 87 86 86 84 86 86 84 87 87 88 85 87 87 Note 1. Maximum value at nominal input voltage and full load of standard type. Note 2. Typical value at nominal input voltage and full load. Safety and Installation Instruction Fusing Consideration Caution: This power module is not internally fused. An input line fuse must always be used. This encapsulated power module can be used in a wide variety of applications, ranging from simple stand-alone operation to an integrated part of sophisticated power architecture. To maximum flexibility, internal fusing is not included; however, to achieve maximum safety and system protection, always use an input line fuse. The safety agencies require a normal-blow fuse with maximum rating of 3A. Based on the information provided in this data sheet on Inrush energy and maximum dc input current; the same type of fuse with lower rating can be used. Refer to the fuse manufacturer’s data for further information. MTBF and Reliability The MTBF of THD 12-WI SERIES of DC/DC converters has been calculated using Bellcore TR-NWT-000332 Case I: 50% stress, Operating Temperature at 40°C (Ground fixed and controlled environment). The resulting figure for MTBF is 2’350’000 hours. MIL-HDBK 217F NOTICE2 FULL LOAD, Operating Temperature at 25°C. The resulting figure for MTBF is 874’500 hours. Created by Traco Electronic AG Arp. www.tracopower.com Date: June 24th, 2008 / Rev.: 1.1 / Page 40 / 40