TOS 30 Series Datasheet & Application Note Non–Isolated DC/DC Power Module 4.5 to 5.5Vdc or 6 to 14Vdc Input TOS 30-05: TOH 30-05: TOS 30-12T: TOH 30-12T: 4.5Vdc to 5.5Vdc input voltage; 0.8Vdc to 3.63Vdc output voltage; 30A output current 4.5Vdc to 5.5Vdc input voltage; 0.8Vdc to 3.63Vdc output voltage; 30A output current 6Vdc to 14Vdc input voltage; 0.8Vdc to 3.63Vdc output voltage; 20/30A output current 6Vdc to 14Vdc input voltage; 0.8Vdc to 5.5Vdc output voltage; 25/30A output current Features • RoHS directive compliant • High efficiency 93% @ 5Vin and 3.3Vout, full load • SMD & SIP packages • Low profile: TOS 30-xxT: 33.0 X 13.5 X 8.8mm (1.30 X 0.53 X 0.35 inch) TOH 30-xxT: 50.8 X 12.7 X 8.8mm (2.00 X 0.50 X 0.35 inch) • Output voltage programmable from 0.8Vdc to 5.5Vdc via external resistor • Delivers up to 30A of output current • No minimum load • Low output ripple and noise • Fixed switching frequency (300KHz) • Remote ON/OFF • Remote Sense • Input under-voltage lockout Applications • Output over-current protection • Intermediate Bus architecture • Over temperature protection • Workstations and Servers • Cost – efficient open frame design • Distributed power architecture • ISO 9001 certified manufacturing facilities • Telecommunications equipment • UL 60950-1, EN 60950-1 and CB-scheme pending • LANs/WANs • Enterprise Networks Option • Positive logic remote ON/OFF • Latest generation IC’s (DSP, FPGA,ASIC) • Current sharing and Microprocessor powered applications • Extra GND pin General Description • Long pins TOS 30-xxT (SMD type), TOH 30-xxT (SIP type) are non-isolated DC/DC converters that can deliver up to 30A of output current with full load efficiency of 93% at 5V input and 3.3V output. These modules provide precisely regulated output voltage programmable via external resistor from 0.8Vdc to 3.63Vdc for TOS(H) 30-05T and TOS 30-12T. TOH 30-12T output voltage is programmable from 0.8Vdc to 5.5Vdc. Their open frame construction and small footprint enable designers to develop cost- and space-efficient solutions. Table of contents Absolute Maximum Rating Output Specification Input Specification General Specification Feature Specification Characteristic Curves Test Configurations Output Voltage Programming Remote Sense Short Circuitry Protection Output Over Current Protection Created by Traco Electronic AG P2 P2 & P3 P3 P3 P4 P5 – P16 P17 P18 P18 P18 P19 Thermal Consideration Remote ON/OFF Control Voltage Sequencing Active Load Sharing Mechanical Data Recommended Pad Layout Soldering and Reflow Consideration Packaging Information Part Number Structure Safety and Installation Instruction MTBF and Reliability www.tracopower.com P19 P20 P21 & P22 P23 P24 P25 P26 P27 & P28 P29 P29 P29 Date: June 6th, 2012 / Rev.: 1.2 / Page 1 / 29 Application Note Single Output Absolute Maximum Rating Parameter Input Voltage (Continuous) Sequencing pin voltage Operating Ambient Temperature Storage Temperature Device TOS(H) 30-05T TOS(H) 30-12T TOS(H) 30-05T TOS(H) 30-12T All All Min -0.3 -0.3 -0.3 -0.3 -40 -55 Max 6 15 6 15 85 125 Unit Vdc Vdc °C °C Output Specifications Parameter Operating Output Range (Selected by an external resistor) Device TOS30-05T TOH30-05T TOS 30-12T TOH 30-12T Voltage Accuracy All (VIN = VIN nom; Iout =Iout max; TA = 25°C) Output Regulation Line (VIN min to VIN max at Full Load) All Load(0% to 100% of Full Load) All Output Ripple & Noise (see page 17) (VIN = VIN nom; Iout =Iout max; TA = 25°C) Cout = 1μF Ceramic // 10μF Tantalum capacitor Peak-to-Peak (5Hz to 20MHz bandwidth) All Temperature Coefficient (TA min to TA max) All Output Voltage Overshoot All (VIN min to VIN max; Iout =Iout max; TA = 25°C) External Capacitance ESR ≥ 1mΩ All ESR ≥ 10mΩ All Output Current TOS 30-05T TOH 30-05T TOS 30-12T 0.8V ≤ Vout ≤ 2.75V 2.75 V < Vout ≤ 3.63V TOH 30-12T 0.8V ≤ Vout ≤ 2.75V 2.75 V < Vout ≤ 5.50V Output Over Current Protection (Hiccup Mode) All Output Short-Circuit Current All (Vout ≤ 250mV) (Hiccup Mode) Created by Traco Electronic AG www.tracopower.com Min 0.8 0.8 0.8 0.8 Typ -1.5 0.1 75 0.4 0 0 0 0 0 0 Max 3.63 3.63 3.63 5.5 Unit +1.5 % Vout (set) 0.2 0.4 % Vout (set) % Vout (set) 1 mV pk-pk % Vout (set) 3 % Vout (set) 2’000 10’000 μF μF 30 30 30 20 30 25 Vdc Adc 150 % Iout 3.5 Adc Date: June 6th, 2012 / Rev.: 1.2 / Page 2 / 29 Application Note Single Output Output Specifications (Continued) Dynamic Load Response (ΔIout / Δt = 5A/μs; VIN = VIN nom; TA = 25°C) Load change from 50% to 100% or 100% to 50% of Iout max Cout = 1μF Ceramic//10μF Tantalum capacitor Peak Deviation Setting Time (Vout < 10% peak deviation) Dynamic Load Response (ΔIout / Δt = 5A/μs; VIN = VIN nom; TA = 25°C) Load change from 50% to 100% or 100% to 50% of Iout max Cout = 2 ×150μF polymer capacitors Peak Deviation Setting Time (Vout < 10% peak deviation) All All 350 40 mV μs All All 250 40 mV μs Unit TOS(H) 30-05T TOS(H) 30-12T TOS(H) 30-05T TOS(H) 30-12T TOS(H) 30-05T TOS(H) 30-12T Min Typ Max 4.5 5.0 5.5 Vin min = Vout set + 1.5V 6.0 12 14 Vin min = Vout set + 2.4V 27 26 4.4 5.5 4.3 5.0 All 100 mA pk-pk Input Specifications Parameter Operating Input Voltage Device TOS(H) 30-05T TOS(H) 30-12T Maximum Input Current (VIN = VIN min; Vout = Vout set; Iout = Iout max) Under Voltage Lockout Turn-on Threshold Under Voltage Lockout Turn-off Threshold Input reflected ripple current (see page 17) (5 to 20MHz, 1μH source impedance) General Specifications Device Vout = 0.8Vdc Vout = 1.2Vdc Vout = 1.5Vdc Vout = 1.8Vdc Vout = 2.5Vdc Vout = 3.3Vdc Efficiency (see page 17) Vout = 0.8Vdc TOS(H) 30-12T Vout = 1.2Vdc (VIN min to VIN max; Iout =Iout max; TA = 25°C) Vout = 1.5Vdc Vout = 1.8Vdc Vout = 2.5Vdc Vout = 3.3Vdc only for TOH 30-12T Vout = 5.0Vdc Switching Frequency All Weight TOS 30-xxT TOH 30-xxT MTBF (see page 29) BELLCORE TR-NWT-000332 All MIL-HDBK-217F Parameter Efficiency (see page 17) TOS(H) 30-05T (VIN min to VIN max; Iout =Iout max; TA = 25°C) Created by Traco Electronic AG www.tracopower.com Min Typ 80.0 85.0 87.0 89.0 92.0 93.0 75.0 81.0 83.5 85.5 88.0 90.0 92.0 300 6.0 7.0 3’100’000 3’600’000 Max Vdc Adc Vdc Vdc Unit % % kHz g hours Date: June 6th, 2012 / Rev.: 1.2 / Page 3 / 29 Application Note Single Output Feature Specifications Parameter On/Off Signal Interface (see page 20) Device code with Suffix “-P” – Positive logic (On/Off is open collector/drain logic input ; Signal referenced to GND) Input High Voltage (Module ON) Input High Current Input Low Voltage (Module OFF) Input Low Current On/Off Signal Interface (see page 20) Device code with no Suffix – Negative logic (On/Off is open collector/drain logic input with external pull-up resistor ; signal referenced to GND) Input High Voltage (Module OFF) Input High Current Input Low Voltage (Module ON) Input Low Current Turn-On Delay and Rise Times (VIN min to VIN max; Iout =Iout max; TA = 25°C) CASE 1 : On/Off input is enable and then input power is applied (delay from instant at which VIN = VIN min until Vout = 10% of Vout set) Device Min All All All All 3.0 CASE 2 : Input power is applied for at least one second and then the On/Off input is enable (delay from instant at which Von/off is enable until Vout = 10% of Vout set) Output Voltage Rise Time (time for Vo to rise from 10% of Vo(set) to 90% of Vout set) -0.3 3.0 -0.3 www.tracopower.com Max Unit VIN max 200 1.2 3.3 Vdc μA Vdc mA VIN max 3.3 1.2 200 Vdc mA Vdc μA All 2.5 5 ms All 2.5 5 ms 10 ms 0.5 V °C 2 ms All Remote Sense Range (see page 18) Over Temperature Protection (see page 19) Sequencing Slew Rate Capability (see page 21 & 22) (VIN min to VIN max; Iout min to Iout max; Vseq < Vout) Sequencing Delay Time (see page 21 & 22) (Delay from VIN min to application of voltage on SEQ pin) Tracking Accuracy (see page 21 & 22) (VIN min to VIN max; Iout min to Iout max; Vseq < Vout) Power-up (2V/ms) Power-down (1V/ms) Active Load Share Accuracy (see page 23) Number of Unit in Parallel Created by Traco Electronic AG All All All All Typ All All 125 All All All All All 10 ms 100 200 10 200 400 mV % Iout 5 Date: June 6th, 2012 / Rev.: 1.2 / Page 4 / 29 Application Note Single Output Characteristic Curves All test conditions are at 25°C. The figures are identical for TOS 30-05T Efficiency versus Output Current Vout = 0.8Vdc Efficiency versus Output Current Vout = 1.2Vdc Efficiency versus Output Current Vout = 1.5Vdc Efficiency versus Output Current Vout = 1.8Vdc Efficiency versus Output Current Vout = 2.5Vdc Efficiency versus Output Current Vout = 3.3Vdc Created by Traco Electronic AG www.tracopower.com Date: June 6th, 2012 / Rev.: 1.2 / Page 5 / 29 Application Note Single Output Characteristic Curves (Continued) All test conditions are at 25°C. The figures are identical for TOS 30-05T Derating Output Current versus Ambient Temperature with Airflow Vin = Vin nom, Vout = 0.8Vdc Derating Output Current versus Ambient Temperature with Airflow Vin = Vin nom, Vout = 1.8Vdc Derating Output Current versus Ambient Temperature with Vin = Vin nom, Vout = 3.3Vdc Typical Output Ripple and Noise. Vin = Vin nom, Vout = 0.8Vdc, Full Load Typical Output Ripple and Noise. Vin = Vin nom, Vout = 1.8Vdc, Full Load Typical Output Ripple and Noise. Vin = Vin nom, Vout = 3.3Vdc, Full Load Created by Traco Electronic AG www.tracopower.com Date: June 6th, 2012 / Rev.: 1.2 / Page 6 / 29 Application Note Single Output Characteristic Curves (Continued) All test conditions are at 25°C. The figures are identical for TOS 30-05T Transient Response to Dynamic Load Change from 100% to 50% to 100% of Full Load Vin = Vin nom, Vout = 0.8Vdc Transient Response to Dynamic Load Change from 100% to 50% to 100% of Full Load Vin = Vin nom, Vout = 3.3Vdc Created by Traco Electronic AG www.tracopower.com Transient Response to Dynamic Load Change from 100% to 50% to 100% of Full Load Vin = Vin nom, Vout = 1.8Vdc Typical Input Start-Up and Output Rise Characteristic Vin = Vin nom, Vout = 3.3Vdc, Full Load Date: June 6th, 2012 / Rev.: 1.2 / Page 7 / 29 Application Note Single Output Characteristic Curves (Continued) All test conditions are at 25°C. The figures are identical for TOH 30-05T Efficiency versus Output Current Vout = 0.8Vdc Efficiency versus Output Current Vout = 1.2Vdc Efficiency versus Output Current Vout = 1.5Vdc Efficiency versus Output Current Vout = 1.8Vdc Efficiency versus Output Current Vout = 2.5Vdc Efficiency versus Output Current Vout = 3.3Vdc Created by Traco Electronic AG www.tracopower.com Date: June 6th, 2012 / Rev.: 1.2 / Page 8 / 29 Application Note Single Output Characteristic Curves (Continued) All test conditions are at 25°C. The figures are identical for TOH 30-05T Derating Output Current versus Ambient Temperature with Airflow Vin = Vin nom, Vout = 0.8Vdc Derating Output Current versus Ambient Temperature with Airflow Vin = Vin nom, Vout = 1.8Vdc Derating Output Current versus Ambient Temperature with Airflow Vin = Vin nom, Vout = 3.3Vdc Typical Output Ripple and Noise. Vin = Vin nom, Vout = 0.8Vdc, Full Load Typical Output Ripple and Noise. Vin = Vin nom, Vout = 1.8Vdc, Full Load Typical Output Ripple and Noise. Vin = Vin nom, Vout = 3.3Vdc, Full Load Created by Traco Electronic AG www.tracopower.com Date: June 6th, 2012 / Rev.: 1.2 / Page 9 / 29 Application Note Single Output Characteristic Curves (Continued) All test conditions are at 25°C. The figures are identical for TOH 30-05T Transient Response to Dynamic Load Change from 100% to 50% to 100% of Full Load Vin = Vin nom, Vout = 0.8Vdc Transient Response to Dynamic Load Change from 100% to 50% to 100% of Full Load Vin = Vin nom, Vout = 3.3Vdc Created by Traco Electronic AG www.tracopower.com Transient Response to Dynamic Load Change from 100% to 50% to 100% of Full Load Vin = Vin nom, Vout = 1.8Vdc Typical Input Start-Up and Output Rise Characteristic Vin = Vin nom, Vout = 3.3Vdc, Full Load Date: June 6th, 2012 / Rev.: 1.2 / Page 10 / 29 Application Note Single Output Characteristic Curves (Continued) All test conditions are at 25°C. The figures are identical for TOS 30-12T Efficiency versus Output Current Vout = 0.8Vdc Efficiency versus Output Current Vout = 1.2Vdc Efficiency versus Output Current Vout = 1.5Vdc Efficiency versus Output Current Vout = 1.8Vdc Efficiency versus Output Current Vout = 2.5Vdc Efficiency versus Output Current Vout = 3.3Vdc Created by Traco Electronic AG www.tracopower.com Date: June 6th, 2012 / Rev.: 1.2 / Page 11 / 29 Application Note Single Output Characteristic Curves (Continued) All test conditions are at 25°C. The figures are identical for TOS 30-12xxx Derating Output Current versus Ambient Temperature with Airflow Vin = Vin nom, Vout = 0.8Vdc Derating Output Current versus Ambient Temperature with Airflow Vin = Vin nom, Vout = 3.3Vdc Typical Output Ripple and Noise. Vin = Vin nom, Vout = 1.8Vdc, Full Load Created by Traco Electronic AG www.tracopower.com Derating Output Current versus Ambient Temperature with Airflow Vin = Vin nom, Vout = 1.8Vdc Typical Output Ripple and Noise. Vin = Vin nom, Vout = 0.8Vdc, Full Load Typical Output Ripple and Noise. Vin = Vin nom, Vout = 3.3Vdc, Full Load Date: June 6th, 2012 / Rev.: 1.2 / Page 12 / 29 Application Note Single Output Characteristic Curves (Continued) All test conditions are at 25°C. The figures are identical for TOS 30-12T Transient Response to Dynamic Load Change from 100% to 50% to 100% of Full Load Vin = Vin nom, Vout = 0.8Vdc Transient Response to Dynamic Load Change from 100% to 50% to 100% of Full Load Vin = Vin nom, Vout = 3.3Vdc Created by Traco Electronic AG www.tracopower.com Transient Response to Dynamic Load Change from 100% to 50% to 100% of Full Load Vin = Vin nom, Vout = 1.8Vdc Typical Input Start-Up and Output Rise Characteristic Vin = Vin nom, Vout = 3.3Vdc, Full Load Date: June 6th, 2012 / Rev.: 1.2 / Page 13 / 29 Application Note Single Output Characteristic Curves (Continued) All test conditions are at 25°C. The figures are identical for TOS 30-12SIL Efficiency versus Output Current Vout = 0.8Vdc Efficiency versus Output Current Vout = 1.2Vdc Efficiency versus Output Current Vout = 1.5Vdc Efficiency versus Output Current Vout = 1.8Vdc Efficiency versus Output Current Vout = 2.5Vdc Efficiency versus Output Current Vout = 3.3Vdc Created by Traco Electronic AG www.tracopower.com Date: June 6th, 2012 / Rev.: 1.2 / Page 14 / 29 Application Note Single Output Characteristic Curves (Continued) All test conditions are at 25°C. The figures are identical for TOS 30-12SIL Efficiency versus Output Current Vout = 5.0Vdc Derating Output Current versus Ambient Temperature with Airflow Vin = Vin nom, Vout = 0.8Vdc Derating Output Current versus Ambient Temperature with Airflow Derating Output Current versus Ambient Temperature with Airflow Vin = Vin nom, Vout = 1.8Vdc Vin = Vin nom, Vout = 3.3Vdc Typical Output Ripple and Noise. Vin = Vin nom, Vout = 0.8VdcFull Load Created by Traco Electronic AG www.tracopower.com Typical Output Ripple and Noise. Vin = Vin nom, Vout = 1.8VdcFull Load Date: June 6th, 2012 / Rev.: 1.2 / Page 15 / 29 Application Note Single Output Characteristic Curves (Continued) All test conditions are at 25°C. The figures are identical for TOS 30-12SIL Typical Output Ripple and Noise. Vin = Vin nom, Vout = 3.3VdcFull Load Transient Response to Dynamic Load Change from 100% to 50% to 100% of Full Load Vin = Vin nom, Vout = 0.8Vdc Transient Response to Dynamic Load Change from 100% to 50% to 100% of Full Load Vin = Vin nom, Vout = 1.8Vdc Transient Response to Dynamic Load Change from 100% to 50% to 100% of Full Load Vin = Vin nom, Vout = 3.3Vdc Typical Input Start-Up and Output Rise Characteristic Vin = Vin nom, Vout = 3.3VdcFull Load Created by Traco Electronic AG www.tracopower.com Date: June 6th, 2012 / Rev.: 1.2 / Page 16 / 29 Application Note Single Output Testing Configurations Input reflected-ripple current measurement test up 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 Efficiency = o Vin × I in Created by Traco Electronic AG × 100% www.tracopower.com Date: June 6th, 2012 / Rev.: 1.2 / Page 17 / 29 Application Note Single Output Output Voltage Programming Output voltage can be programmed from 0.8Vdc to 5Vdc by connecting an external resistor between Trim and GND pins. Without this external resistor, the output voltage will be 0.8Vdc. Using the following equation to calculate the value of external resistor for desired output voltage. Trim equation R trim = -100 ] Ω [ Vout1200 – 0.80 Vout set (Vdc) R trim (Ω) 0.8 1.2 1.5 1.8 2.5 3.3 5.0 * Open 2900 1614 1100 605 380 185 * Vout = 5Vdc, only for TOH 30-12T Remote Sense To minimum the effects of distribution losses by regulating the voltage at the Remote Sense pin. The voltage between the Sense pin and Vout pin must not exceed 0.5Vdc. When using Remote Sense, the output voltage of the module can increase, which if the same output current is maintained, the output power of the module increase, too. Assure that the output power of the module is equal or below the maximum rated output power. When the Remote Sense feature is not being used, leaf the Remote Sense pin unconnected. Remote Sense circuit configuration Short Circuitry Protection Hiccup and auto-recovery mode. During short circuit, converter will not perform any output voltage. The average current during this condition will be very low and due to that is the device safe in short circuit condition. Created by Traco Electronic AG www.tracopower.com Date: June 6th, 2012 / Rev.: 1.2 / Page 18 / 29 Application Note Single Output Output Over Current Protection To provide protection in an over output current condition, the unit is equipped with internal current-limiting circuitry and can endure over load (over current) continuously. During over output current protection the device enters into a hiccup mode. Hiccup-mode is a method of operation whose purpose is to protect the device from being damaged during an over-current fault condition. It also enables the power supply to restart when the fault condition will be removed. The typical average output current during hiccup is 3.5A. Thermal Consideration The power module operates in a variety of thermal environments; however, sufficient cooling should be provided to ensure reliable operation of the unit. Heat is removed by conduction, convention, and radiation to the surrounding environment. Proper cooling can be verified by measuring the point as shown at the figure below. The temperature at this point should not exceed 115°C. When Operating, adequate cooling must be provided to maintain a test point temperature of ≤115°C. Although the maximum Temperature of the power modules is 115°C, you can limit this Temperature to a lower value to increase extremely the reliability. The unit will shutdown if the thermal reference point exceeds 125°C (typical), but the thermal shutdown is not intended as a guarantee that the unit will survive temperature beyond 125°C. The module will automatically restarts after cooling down. TOH 30-xxT BOTTOM VIEW TOS 30-xxT TOP VIEW Created by Traco Electronic AG www.tracopower.com Date: June 6th, 2012 / Rev.: 1.2 / Page 19 / 29 Application Note Single Output Remote ON/OFF Control Two remote ON/OFF control logic options are available for TOS(H)-SERIES. Positive logic On/Off signal, no device code suffix, turns the module ON during a logic High on the On/Off pin and turns OFF during a logic Low. Positive logic On/Off signal, device code suffix “-N”, turns the module OFF during a logic High on the On/Off pin and turns ON during a logic Low. The On/Off pin is an open collector/drain logic input signal (Von/off) that is referenced to GND. Circuit configuration for using Positive logic Circuit configuration for using Negative logic Created by Traco Electronic AG www.tracopower.com Date: June 6th, 2012 / Rev.: 1.2 / Page 20 / 29 Application Note Single Output Voltage Sequencing Dual voltage supply architectures often need coordinated management of both core and I/O voltages during power-up and power-down, a requirement called sequencing. IF not use voltage sequencing, please left open SEQ pin. Ratiometric Start-up VI/O VCORE Both of supply voltages have different slew-rate during power-up and power-down. So they reach the regulation point at the same time during power-up. And reach to zero at the same time during power-down. Simultaneous Start-up VI/O VCORE TOS(H) 30-05T TOS(H) 30-12T Both voltages start ramping up with identical slew-rate. After the core or lower voltage reaches its regulation point, the I/O voltage continues with the same slew-rate until it reaches its regulation voltage. The pattern is reversed during the power-down sequence. Created by Traco Electronic AG www.tracopower.com Date: June 6th, 2012 / Rev.: 1.2 / Page 21 / 29 Application Note Single Output Voltage Sequencing (Continued) Sequential Start-up VI/O VCORE Sequential start-up where one of the voltages, often the core voltage, comes up first and reaches its regulated value. After a delay time, the other voltage is required to come up and reach its regulation value. During power-down, the sequencing order of the supply voltages is revered. Created by Traco Electronic AG www.tracopower.com Date: June 6th, 2012 / Rev.: 1.2 / Page 22 / 29 Application Note Single Output Active Load Sharing For additional power requirements, the TOS(H)30-series power module is also available with a parallel option. Up to five modules can be configured, in parallel, with active load sharing. To implement force load sharing, the following connections should be made: The share pins of all units in parallel must be connected together. The path of these connections should be as short as possible. All SENSE pins should be connected to the power bus at the same point. Close proximity and directness are necessary for good noise immunity. When choosing the number of modules required for parallel operation, take note of the fact that current sharing has some tolerance. In addition, under transient conditions such as a dynamic load change and during start-up, all converter output currents will not be equal. To allow such variation and avoid the likelihood of a converter shutting off due to an output current over load, the total capacity of the paralleled system should ≤75% of the sum of the individual converters. All modules should be turned on and turn off together. This is so that all modules start up at the same time avoiding the problem of one converter sourcing current into the other leading to an over-current trip condition. To ensure that all modules start up simultaneously, the on/off pins of all paralleled converters should be tied together and the converters enabled and disabled using the on/off pin. A single trim resistor can be used for all of the paralleled modules. This is accomplished by tying all TRIM pins together and connecting a single resistor to GND. The value of this resistor is given by RTRIM / N, where N is the number of modules paralleled, and RTRIM, is the trim resistor value for a single module. The share bus is not designed for redundant operation and the system will be non-functional upon failure of one of the unit when multiple units are in parallel. In particular, if one of the converters shuts down during operation, the other converters may also shut down due to their outputs hitting current limiting trigger point. In such a situation, unless a coordinated restart is ensured, the system may never properly restart since different converters will try to restart at different times causing an over-load condition and subsequent shutdown. This situation can be avoided by having an external output voltage monitor circuit that detects a shutdown condition and forces all converters to shutdown and restart together. If the current sharing function is chosen, output voltage regulation will not be meet the specifications. Created by Traco Electronic AG www.tracopower.com Date: June 6th, 2012 / Rev.: 1.2 / Page 23 / 29 Application Note Single Output Mechanical Data TOH 30-xxT VOUT VOUT VOUT +SENSE GND GND (option) SHARE VIN GND VIN SEQ TRIM ON/OFF SIDE VIEW BOTTOM VIEW TOS 30-xxT SEQ GND VOUT TRIM SENSE SHARE (option) GND (option) GND (option) ON/OFF VIN PIN SIZE: ψ 1.60mm SURFACE MOUNT CONTACT SIDE VIEW BOTTOM VIEW 1. All dimensions in Inches (mm) Tolerance: X.XX ±0.02 (X.X ±0.5) X.XXX ±0.01 (X.XX ±0.25) 2. Pin pitch tolerance: ±0.01 (±0.25) 3. Pin dimension tolerance: ±0.004 (±0.1) Created by Traco Electronic AG www.tracopower.com Date: June 6th, 2012 / Rev.: 1.2 / Page 24 / 29 Application Note Single Output Recommended Pad Layout TOH 30-xxT KEEP OUT AREA THROUGH HOLD 0.043[1.09] PAD SIZE 0.064[1.63] TOS 30-xxT 0.190 [4.83] SENSE 0.190 [4.83] TRIM 0.190 [4.83] VOUT 0.190 [4.83] GND SEQ 0.316 [8.03] 0.405 [10.29] 0.120 [3.05] SHARE 0.190 [4.83] GND (option) GND (option) PAD SIZE : ON/OFF 0.095 0.082[2.41 2.08] 0.027 ON/OFF PAD SIZE : 0.134 0.095 [3.40 2.41] 0.114 [2.89] VIN STANDARD PAD SIZE : 0.140 0.095 [3.56 2.41] TOP VIEW 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 www.tracopower.com Date: June 6th, 2012 / Rev.: 1.2 / Page 25 / 29 Application Note Single Output Soldering and Reflow Considerations Lead free wave solder profile for TOH 30-xxT Zone Reference Parameter. Preheat zone Rise temperature speed: Preheat temperature: Peak temperature: Peak time (T1+T2 time): 3°C/sec max. 100 ~ 130°C 250 ~ 260°C 4 ~ 6 sec Reference Parameter. Rise temperature speed: Preheat time: Preheat temperature: Rise temperature speed: Melting time: Melting temperature: Peak temperature: Peak time: Rise temperature speed: 1 ~ 3°C/sec 60 ~ 90sec 155 ~ 185°C 1 ~ 3°C/sec 20 ~ 40 sec 220°C 230 ~ 240°C 10 ~ 20 sec -1 ~ -5°C/sec Actual heating Lead free re-flow profile for TOS 30-xxT Zone Preheat zone Actual heating Cooling Created by Traco Electronic AG www.tracopower.com Date: June 6th, 2012 / Rev.: 1.2 / Page 26 / 29 Application Note Single Output Packaging Information Packaging information for TOH 30-xxT TOH 30 TOH 30 TOH 06 & TOH 10 & TOH 16 TRAY Created by Traco Electronic AG www.tracopower.com Date: June 6th, 2012 / Rev.: 1.2 / Page 27 / 29 Application Note Single Output Packaging Information (Continued) Packaging information for TOS 30-ssT TOS 30 Created by Traco Electronic AG www.tracopower.com Date: June 6th, 2012 / Rev.: 1.2 / Page 28 / 29 Application Note Single Output Part Number Structure TOH 30- 05T- N S L Suffix – E: Extra GND pin 2 extra GND pins only for SMD TYPE S: SMD Type H: SIP Type Suffix – L: Long Pins 5.08mm ±0.25mm only for SIP TYPE No Suffix: No Current Function Suffix – P: Current Share Max. Output Current TOS(H)30-05T TOS30-12T 0.8V ≤ Vout ≤ 2.75V 2.75 V < Vout ≤ 3.63V TOH30-12T 0.8V ≤ Vout ≤ 2.75V 2.75V < Vout ≤ 5.5V ON/OFF Logic Suffix – N: Negative No Suffix: Positive 30A 30A 20A 30A 25A Input Range 5 : 4.5~5.5Vdc 12 : 6.0~14Vdc 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 slow-blow fuse with maximum rating of 40A. 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 TOS(H)30-SERIES of Non-isolated DC/DC converters has been calculated Bellcore TR-NWT-000332 Case I: 50% stress, Operating Temperature at 40°C (Ground fixed and controlled environment). The resulting figure for MTBF is 3’145’000 hours. MIL-HDBK 217F NOTICE2 FULL LOAD, Operating Temperature at 25℃. The resulting figure for MTBF is 362’600 hours. Created by Traco Electronic AG www.tracopower.com Date: June 6th, 2012 / Rev.: 1.2 / Page 29 / 29