DC/DC Point-of-Load (POL) Converter Input: 2.4 to 5.5Vdc or 8.3 to 14Vdc, Output: Vout = 0.75 to 3.3Vdc or 0.75 to 5.0Vdc, I out = 6A, 10A or 16A

Transcription

1 TOS Series Application Note DC/DC Point-of-Load (POL) Converter Input:. to 5.5Vdc or 8.3 to 1Vdc, Output: Vout =.75 to 3.3Vdc or.75 to 5.Vdc, I out = A, 1A or 1A (Pending) Applications Intermediate Bus architecture Workstations and Servers Distributed power architecture Telecommunications equipment LANs/WANs Enterprise Networks Latest generation IC s (DSP, FPGA, ASIC) and Microprocessor powered applications Features RoHS directive compatible High efficiency - up to % SMD & SIP packages Low profile: TOS -xxsm:.3x11.x.55mm (.8x.5x.58 inch) TOS -xxsil:.9x1.x.1mm (.9x.x. inch) TOS 1-xxSM: 33.x13.5x7.75mm (1.3x.53x.35 inch) TOS 1-xxSIL: 5.8x1.7x7.3mm (.x.5x.87 inch) TOS 1-xxSM: 33.x13.5x7.75mm (1.3x.53x.35 inch) TOS 1-xxSIL: 5.8x1.7x7.3mm (.x.5x.87 inch) Output voltage adjustable from.75vdc to 3.3Vdc or from.75vdc to 5.Vdc via external resistor Delivers up to A (TOS ), 1A (TOS 1) or 1A (TOS 1) No minimum load Low output ripple and noise Fixed switching frequency (3KHz) Remote ON/OFF Input under-voltage lockout Output over-current protection Over temperature protection Cost efficient open frame design ISO 1 certified manufacturing facilities UL 95-1 and CB pending Option Positive remote ON/OFF Complete TOS datasheet can be downloaded at: General Description TOS xx-xxsm (SMD package) and TOS xx-xxsil (SIP package) are non-isolated DC/DC Point-of-Load converters that can deliver up to A (TOS -xxyyy), 1A (TOS 1-xxyyy) or 1A (TOS 1-xxyyy) of output current with an efficiency of up to % at 3.3V output voltage. These modules provide precisely regulated output voltage adjustable via external resistor between.75vdc and 3.3Vdc (TOS xx-5yyy) or.75vdc and 5.Vdc (TOS xx-1yyy) over a wide input voltage range between V in =. and 5.5Vdc (TOS xx-5yyy) or 8.3Vdc and 1.Vdc (TOS xx-1yyy). Their open frame construction and small footprint enable designers to develop cost- and space-efficient solutions. Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 1 / 37

2 Table of contents Description Page Absolute Maximum Rating Output Specification 3 & Input Specification General Specification Feature Specification 5 Characteristic Curves TOS -5yyy - 8 Characteristic Curves TOS -1yyy 9-11 Characteristic Curves TOS 1-5yyy 1-1 Characteristic Curves TOS 1-1yyy Characteristic Curves TOS 1-5yyy 18 - Characteristic Curves TOS 1-1yyy 1-3 Thermal Consideration & 5 Short Circuitry Protection Output Over Current Protection Output Voltage Programming Remote Sense 7 Remote ON/OFF Control 7 Input Filtering 8 Output Filtering 8 Test Configurations 9 Mechanical Data TOS -xxyyy 3 Recommended Pad Layout TOS -xxyyy 31 Mechanical Data TOS 1-xxyyy & TOS 1-xxyyy 3 Recommended Pad Layout TOS 1-xxyyy & TOS 1-xxyyy 33 Soldering and Reflow Considerations 3 Packaging Information TOS -xxyyy 35 Packaging Information TOS 1-xxyyy & TOS 1-xxyyy 3 Safety and Installation Instruction 37 MTBF and Reliability 37 ABSOLUTE MAXIMUM RATINGS Parameter Device Min Max Unit Input Voltage (Continuous) TOS xx-5yyy TOS xx-1yyy Operating Ambient Temperature All - 85 C Storage Temperature All C Vdc Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page / 37

3 OUTPUT SPECIFICATIONS Parameter Device Min Typ Max Unit Operating Output Voltage Range (Selected via an external resistor) Voltage Accuracy (VIN = VIN nom ; Iout = Iout max ;TA = 5 C) Output Regulation Line (VIN, min to VIN, max at Full Load) Load(% to 1% of Full Load) Output Ripple & Noise (VIN = VIN nom ; Iout = Iout max; TA = 5 C) Cout = 1µF Ceramic // 1µF Tantalum capacitor RMS (5Hz to MHz bandwidth) Peak-to-Peak (5Hz to MHz bandwidth) RMS (5Hz to MHz bandwidth) Peak-to-Peak (5Hz to MHz bandwidth) TOS xx-5 TOS xx Vdc All - + % Vout set All All TOS 1-1 and TOS 1-1 All other TOS xx-xx % Vout set % Vout set mv rms mv pk-pk mv rms mv pk-pk Temperature Coefficient All. % Vout set Output Voltage Overshoot (VIN=. ~ 5.5V; Iout = Iout max ; TA = 5 C) (VIN= 8.3 ~ 1.V; Iout = Iout max ; TA = 5 C) TOS xx-5 TOS xx-1 1 % Vout set External Capacitance ESR 1mΩ ESR 1mΩ ESR 1mΩ ESR 1mΩ Output Current TOS -5 All other TOS xx-xx TOS -xx TOS 1-xx TOS 1-xx Output Over Current Protection (Hiccup Mode) TOS -5 TOS xx-1 TOS 1-5 TOS 1-1 Output Short-Circuit Current TOS -xx (Vout 5mV) (Hiccup Mode) TOS 1-xx TOS 1-xx Dynamic Load Response (ΔIo /Δt =.5A/µs ; VIN = VIN nom ; TA = 5 C) TOS -5 Load change from 5% to 1% or 1% to 5% of Iout max Cout = 1µF Ceramic // 1µF Tantalum capacitor Peak Deviation Setting Time (Vout < 1% peak deviation) (ΔIo /Δt =.5A/µs ; VIN = VIN nom ; TA = 5 C) Load change from 5% to 1% or 1% to 5% of Iout max Cout = 1µF Ceramic // 1µF Tantalum capacitor Peak Deviation Setting Time (Vout < 1% peak deviation) (ΔIo /Δt =.5A/µs ; VIN = VIN nom ; TA = 5 C) Load change from 5% to 1% or 1% to 5% of Iout max Cout = 1µF Ceramic // 1µF Tantalum capacitor Peak Deviation Setting Time (Vout < 1% peak deviation) TOS -5 TOS 1-5 TOS 1-5 All other TOS xx-xx All other TOS xx-xx µf µf µf µf Adc % Iout Adc mv µs mv µs mv µs Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 3 / 37

4 OUTPUT SPECIFICATIONS Parameter Device Min Typ Max Unit Dynamic Load Response (ΔIo /Δt =.5A/µs ; VIN= VIN nom ; TA = 5 C) TOS -xx 5 mv Load change from 5% to 1% or 1% to 5% of Iout max Cout = 15µF polymer capacitors Peak Deviation Setting Time (Vo < 1% peak deviation) (ΔIo /Δt =.5A/µs ; VIN= VIN nom ; TA = 5 C) Load change from 5% to 1% or 1% to 5% of Iout max Cout = 15µF polymer capacitors Peak Deviation Setting Time (Vo < 1% peak deviation) (ΔIo /Δt =.5A/µs ; VIN= VIN nom ; TA = 5 C) Load change from 5% to 1% or 1% to 5% of Iout max Cout = 15µF polymer capacitors Peak Deviation Setting Time (Vo < 1% peak deviation) INPUT SPECIFICATIONS Parameter Device Min Typ Max Unit Operating Input Voltage Vout set < VIN.5V Vdc Maximum Input Current Adc (VIN=VIN,min ; Vo,set=3.3V ; Io=Io,max) Input No Load Current (VIN = 5V; Iout = A; module enabled) Input No Load Current (VIN = 5V; Iout = A; module disabled) Vout =.75V Vout =3.3V 5 ma ma All. ma Under Voltage Lockout Turn-on Threshold. Vdc Under Voltage Lockout Turn-off Threshold. Vdc Input reflected ripple current All 35 ma pk-pk (5 to MHz, 1µH source impedance) TOS -xx TOS 1-xx TOS 1-xx TOS 1-xx TOS 1-xx µs mv µs mv µs GENERAL SPECIFICATIONS Parameter Device Min Typ Max Unit Efficiency (Vin nom; Iout max ; Vout max;ta = 5 C) TOS -5 TOS -1 TOS 1-5 TOS 1-1 TOS 1-5 TOS 1-1 Switching Frequency All 3 KHz Weight TOS 5-xx.8 All other TOS-xx-xx. g MTBF TOS -5 TOS TOS TOS hours TOS 1-5 TOS % % % % % % Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page / 37

5 FEATURE SPECIFICATIONS Parameter Device Min Typ Max Unit On/Off Signal interface 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 All All All All -.. VIN max Vdc µa Vdc ma On/Off Signal interface 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 TOS xx-5 TOS xx-5 TOS xx-5 TOS xx VIN max Vdc ma Vdc µa On/Off Signal interface 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 TOS xx-1 TOS xx-1 TOS xx-1 TOS xx VIN max Vdc ma Vdc µa Turn-On Delay and Rise Times (VIN = VIN nom ; Iout = Iout max ; TA=5 C) CASE 1 : On/Off input is set to logic Low (Module ON) and then input power is applied (delay from instant at which VIN = VIN min until Vout = 1% of Vout set) TOS xx-5 TOS xx ms ms CASE : Input power is applied for at least one second and then the On/Off input is set to Logic Low (delay from instant at which Von/off =.3V until Vout = 1% of Vout set) TOS xx-5 TOS xx ms ms Output Voltage Rise Time (time for Vo to rise from 1% of Vout set to % of Vout set) Remote Sense Range TOS xx-5 TOS xx-1 TOS 1-xx and TOS 1-xx only Over Temperature Protection TOS -5 TOS -1 All other TOS xx-xx ms ms.5 V C Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 5 / 37

6 Characteristic Curves All test conditions are at 5 C.The figures are identical for either TOS -5SM and TOS -5SIL Vout =.75Vdc Vout = 1.Vdc Vout =.5Vdc Vout = 3.3Vdc Vout = 1.5Vdc Output Ripple and Noise VIN = 5Vdc ; Vout =.75Vdc ; Iout = A Vout = 1.8Vdc Output Ripple and Noise VIN = 5Vdc ; Vout = 1.8Vdc ; Iout = A Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page / 37

7 Characteristic Curves All test conditions are at 5 C.The figures are identical for either TOS -5SM or TOS -5SIL Output Ripple and Noise VIN = 5Vdc ; Vout = 3.3Vdc ; Iout = A Dynamic Load 5% of Full Load Step Change VIN = 5Vdc ; Vout = 3.3Vdc; Cout = 15µF polymer capacitors Dynamic Load 5% of Full Load Step Change VIN = 5Vdc ; Vout = 1.8Vdc Input and Output Start-Up VIN = 5Vdc ; Vout = 3.3Vdc ; Iout = A Dynamic Load 5% of Full Load Step Change VIN = 5Vdc ; Vout =.5Vdc Start-Up Using Remote On/Off VIN = 5Vdc ; Vout = 3.3Vdc ; Iout = A Dynamic Load 5% of Full Load Step Change VIN = 5Vdc ; Vout = 3.3Vdc Output Short Circuit, Input Current VIN = 5Vdc ; Vout = 3.3Vdc Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 7 / 37

8 Characteristic Curves All test conditions are at 5 C.The figures are identical for either TOS -5SM and TOS -5SIL and Airflow VIN = 5Vdc; Vout =.75Vdc and Airflow VIN = 5Vdc; Vout = 1.8Vdc and Airflow VIN = 5Vdc; Vout = 3.3Vdc Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 8 / 37

9 Characteristic Curves All test conditions are at 5 C.The figures are identical for either TOS -1SM and TOS -1SIL Vout =.75Vdc Vout =.5Vdc Vout = 1.Vdc Vout = 3.3Vdc Vout = 1.5Vdc Vout = 1.8Vdc Vout = 5Vdc Output Ripple and Noise VIN = 1Vdc; Vout =.75Vdc; Iout = A Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 9 / 37

10 Characteristic Curves All test conditions are at 5 C. The figures are identical for either TOS -1SM and TOS -1SIL Output Ripple and Noise VIN = 1Vdc; Vout = 3.3Vdc; Iout = A Dynamic Load 5% of Full Load Step Change VIN = 1Vdc; Vout = 5.Vdc Output Ripple and Noise VIN = 1Vdc; Vout = 5.Vdc; Iout = A Dynamic Load 5% of Full Load Step Change VIN =1Vdc; Vout = 5.Vdc; Cout = 15µF polymer capacitors Dynamic Load 5% of Full Load Step Change VIN = 1Vdc; Vout = 1.8Vdc Input and Output Start-Up VIN = 1Vdc; Vout = 3.3Vdc; Iout = A Dynamic Load 5% of Full Load Step Change VIN = 1Vdc; Vout = 3.3Vdc Start-Up Using Remote On/Off VIN = 1Vdc; Vout = 3.3Vdc; Iout = A Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 1 / 37

11 Characteristic Curves All test conditions are at 5 C.The figures are identical for either TOS -1SM and TOS -1SIL Output Short Circuit, Input Current VIN = 5Vdc; Vout = 3.3Vdc and Airflow VIN = 1Vdc; Vout = 3.3Vdc and Airflow VIN = 1Vdc; Vout =.75Vdc and Airflow VIN = 1Vdc; Vout = 5Vdc and Airflow VIN = 1Vdc; Vout = 1.8Vdc and Airflow VIN = 1Vdc; Vout =.5Vdc Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 11 / 37

12 Characteristic Curves All test conditions are at 5 C.The figures are identical for either TOS 1-5SM and TOS 1-5SIL Vout =.75Vdc Vout =.5Vdc Vout = 1.Vdc Vout = 1.5Vdc Vout = 3.3Vdc Output Ripple and Noise VIN = 5Vdc; Vout =.75Vdc; Iout = 1A Vout = 1.8Vdc Output Ripple and Noise VIN = 5Vdc; Vout = 1.8Vdc; Iout = 1A Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 1 / 37

13 Characteristic Curves All test conditions are at 5 C.The figures are identical for either TOS 1-5SM and TOS 1-5SIL Output Ripple and Noise VIN = 5Vdc; Vout = 3.3Vdc; Iout = 1A Dynamic Load 5% of Full Load Step Change VIN = 5Vdc; Vout = 3.3Vdc; Cout = 15µF polymer capacitors Dynamic Load 5% of Full Load Step Change VIN = 5Vdc; Vout = 1.8Vdc Input and Output Start-Up VIN = 5Vdc; Vout = 3.3Vdc; Iout = 1A Dynamic Load 5% of Full Load Step Change VIN = 5Vdc; Vout =.5Vdc Start-Up Using Remote On/Off VIN = 5Vdc; Vout = 3.3Vdc; Iout = 1A Dynamic Load 5% of Full Load Step Change VIN = 5Vdc; Vout = 3.3Vdc Output Short Circuit, Input Current VIN = 5Vdc; Vout = 3.3Vdc Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 13 / 37

14 Characteristic Curves All test conditions are at 5 C.The figures are identical for either TOS 1-5SM and TOS 1-5SIL and Airflow VIN = 5Vdc; Vout =.75Vdc and Airflow VIN = 5Vdc; Vout = 1.8Vdc and Airflow VIN = 5Vdc; Vout = 3.3Vdc Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 1 / 37

15 Characteristic Curves All test conditions are at 5 C.The figures are identical for either TOS 1-1SM and TOS 1-1SIL Vout =.75Vdc Vout =.5Vdc Vout = 1.Vdc Vout = 1.5Vdc Vout = 3.3Vdc Vout = 5Vdc Vout = 1.8Vdc Output Ripple and Noise VIN = 1Vdc; Vout =.75Vdc; Iout = 1A Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 15 / 37

16 Characteristic Curves All test conditions are at 5 C.The figures are identical for either TOS 1-1SM and TOS 1-1SIL Output Ripple and Noise VIN = 1Vdc; Vout = 3.3Vdc; Iout = 1A Dynamic Load 5% of Full Load Step Change VIN = 1Vdc; Vout = 5.Vdc Output Ripple and Noise VIN = 1Vdc; Vout = 5.Vdc; Iout = 1A Dynamic Load 5% of Full Load Step Change VIN =1Vdc; Vout = 5.Vdc; Cout = 15µF polymer capacitors Dynamic Load 5% of Full Load Step Change VIN = 1Vdc; Vout = 1.8Vdc Input and Output Start-Up VIN = 1Vdc; Vout = 3.3Vdc; Iout = 1A Dynamic Load 5% of Full Load Step Change VIN = 1Vdc; Vout = 3.3Vdc Start-Up Using Remote On/Off VIN = 1Vdc; Vout = 3.3Vdc; Iout = 1A Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 1 / 37

17 Characteristic Curves All test conditions are at 5 C.The figures are identical for either TOS 1-1SM and TOS 1-1SIL Output Short Circuit, Input Current VIN = 5Vdc; Vout = 3.3Vdc and Airflow VIN = 1Vdc; Vout = 5Vdc and Airflow VIN = 1Vdc; Vout =.75Vdc and Airflow VIN = 1Vdc; Vout = 1.8Vdc and Airflow VIN = 1Vdc; Vout = 3.3Vdc Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 17 / 37

18 Characteristic Curves All test conditions are at 5 C.The figures are identical for either TOS 1-5SM and TOS 1-5SIL Efficiency versus Output Current Vout =.75Vdc Efficiency versus Output Current Vout =.5Vdc Efficiency versus Output Current Vout = 1.Vdc Efficiency versus Output Current Vout = 1.5Vdc Efficiency versus Output Current Vout = 3.3Vdc Output Ripple and Noise VIN = 5Vdc; Vout =.75Vdc; Iout = 1A Efficiency versus Output Current Vout = 1.8Vdc Output Ripple and Noise VIN = 5Vdc; Vout = 1.8Vdc; Iout = 1A Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 18 / 37

19 Characteristic Curves All test conditions are at 5 C.The figures are identical for either TOS 1-5SM and TOS 1-5SIL Output Ripple and Noise VIN = 5Vdc; Vout = 3.3Vdc; Iout = 1A Dynamic Load 5% of Full Load Step Change VIN = 5Vdc; Vout = 3.3Vdc; Cout = 15µF polymer capacitors Dynamic Load 5% of Full Load Step Change VIN = 5Vdc; Vout = 1.8Vdc Input and Output Start-Up VIN = 5Vdc; Vout = 3.3Vdc; Iout = 1A Dynamic Load 5% of Full Load Step Change VIN = 5Vdc; Vout =.5Vdc Start-Up Using Remote On/Off VIN = 5Vdc; Vout = 3.3Vdc; Iout = 1A Dynamic Load 5% of Full Load Step Change VIN = 5Vdc; Vout = 3.3Vdc Output Short Circuit, Input Current VIN = 5Vdc; Vout = 3.3Vdc Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 19 / 37

20 Characteristic Curves All test conditions are at 5 C.The figures are identical for either TOS 1-5SM and TOS 1-5SIL and Airflow VIN = 5Vdc; Vout =.75Vdc and Airflow VIN = 5Vdc; Vout = 1.8Vdc OUTPUT CUR R ENT,Io(A) and Airflow VIN = 5Vdc; Vout = 3.3Vdc Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page / 37

21 Characteristic Curves All test conditions are at 5 C.The figures are identical for either TOS 1-1SM and TOS 1-1SIL Vout =.75Vdc Vout = 1.Vdc Vout = 1.5Vdc Vout = 1.8Vdc Vout =.5Vdc Vout = 3.3Vdc Vout = 5Vdc Output Ripple and Noise VIN = 1Vdc; Vout =.75Vdc; Iout = 1A Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 1 / 37

22 Characteristic Curves All test conditions are at 5 C.The figures are identical for either TOS 1-1SM and TOS 1-1SIL Output Ripple and Noise VIN = 1Vdc; Vout = 3.3Vdc; Iout = 1A Dynamic Load 5% of Full Load Step Change VIN = 1Vdc; Vout = 5Vdc Output Ripple and Noise VIN = 1Vdc; Vout = 5.Vdc; Iout = 1A Dynamic Load 5% of Full Load Step Change VIN =1Vdc; Vout = 5.Vdc; Cout = 15µF polymer capacitors Dynamic Load 5% of Full Load Step Change VIN = 1Vdc; Vout = 1.8Vdc Input and Output Start-Up VIN = 1Vdc; Vout = 3.3Vdc; Iout = 1A Dynamic Load 5% of Full Load Step Change VIN = 1Vdc; Vout = 3.3Vdc Start-Up Using Remote On/Off VIN = 1Vdc; Vout = 3.3Vdc; Iout = 1A Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page / 37

23 Characteristic Curves All test conditions are at 5 C.The figures are identical for either TOS 1-1SM and TOS 1-1SIL Output Short Circuit, Input Current VIN = 5Vdc; Vout = 3.3Vdc and Airflow VIN = 1Vdc; Vout = 5Vdc and Airflow VIN = 1Vdc; Vout =.75Vdc and Airflow VIN = 1Vdc; Vout = 1.8Vdc and Airflow VIN = 1Vdc; Vout = 3.3Vdc Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 3 / 37

24 Thermal Consideration of TOS -5yyy 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, convention, 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 15 C (TOS -xxyyy) or 115 C (all other TOS converters). When Operating, adequate cooling must be provided to maintain the test point temperature at or below 15 C (TOS -xxyyy) or 115 C (all other TOS converters). Although the maximum point Temperature of the power modules is 15 C (TOS -xxyyy) or 115 C (all other TOS converters), you can limit this Temperature to a lower value for extremely high reliability. The unit will shutdown if the thermal reference point exceeds 135 C typ. (TOS -xxyyy) or 15 C (all other TOS converters) but the thermal shutdown is not intended as a guarantee that the unit will survive temperature beyond its rating. The module will automatically restarts after it cools down. TOS -5SIL Temperature Measure Point Top View Bottom View TOS -5SM Temperature Measure Point Top View Bottom View Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page / 37

25 TOS -1SIL Temperature Measure Point Top View Bottom View TOS -1SM Temperature Measure Point Top View Bottom View TOS 1-5SIL, TOS 1-1SIL, TOS 1-5SIL and TOS 1-1SIL Temperature Measure Point Top View Bottom View TOS 1-5SM, TOS 1-1SM, TOS 1-5SM and TOS 1-1SM Temperature Measure Point Top View Bottom View Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 5 / 37

26 Short Circuitry Protection Continuous, hiccup and auto-recovery mode. During short circuit, converter still shut down. The average current during this condition will be very low and the device can be safety in this condition. 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 current limiting continuously. When the fault condition occurs, the unit enters hiccup mode. Hiccup-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 restart when the fault is removed. The typical average output current during hiccup is A (TOS ), 3A (TOS 1) and 3.5A (TOS 1). Output Voltage Programming Output voltage can be adjusted from.75vdc to 3.3Vdc (TOS xx-5yyy) or.75vdc to 5.Vdc (TOS xx-1yyy) by connecting an external resistor between Trim and GND pins. Without this external resistor, the output voltage will be.75vdc. Using the following equation to calculate the value of external resistor for desired output voltage. Trim equation 17 TOS xx 5 yyy Rtrim = 511 = Ω Vout TOS xx 1 yyy Rtrim = 1 = Ω Vo.755 TOS xx-5yyy Vout set (V) Rtrim (KΩ).755 Open TOS xx-1yyy Vout set (V) Rtrim (KΩ).755 Open Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page / 37

27 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 Vo pin must not exceed.5v. 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. Make sure that the output power of the module at or below the maximum rated power. When the Remote Sense feature is not being used, leave the Remote Sense pin unconnected. Remote Sense circuit configuration Remote ON/OFF Control Two remote ON/OFF control logic options are available for. Positive logic On/Off signal, device code suffix -P, turns the module ON during a logic High on the On/Off pin and turns OFF during a logic Low. Negative logic On/Off signal, no device code suffix, 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 referenced to GND. Circuit configuration for using Positive logic Circuit configuration for using Negative logic Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 7 / 37

28 Input Filtering TOS -5SM / TOS -5SIL module should be connected to a low impedance DC source. A highly inductive source can affect the stability of the module. To make sure the module is stable, input capacitor is necessary that minimize input ripple voltage of the module. TOS -5yyy: To minimize input voltage ripple, 15µF low-esr polymer capacitors in parallel with 7µF ceramic capacitors are recommended at the input of the module. TOS -1yyy: To minimize input voltage ripple, 7µF low-esr tantalum capacitors in parallel with µf very low-esr ceramic capacitors are recommended at the input of the module. TOS 1-5yyy: To minimize input voltage ripple, 3 15µF low-esr polymer capacitors in parallel with 7µF ceramic capacitors are recommended at the input of the module. TOS 1-1yyy: To minimize input voltage ripple, 7µF low-esr tantalum capacitors in parallel with µf very low-esr ceramic capacitors are recommended at the input of the module. TOS 1-5yyy: To minimize input voltage ripple, 15µF low-esr polymer capacitors in parallel with 7µF ceramic capacitors are recommended at the input of the module. TOS 1-1yyy: To minimize input voltage ripple, 7µF low-esr tantalum capacitors in parallel with µf very low-esr ceramic capacitors are recommended at the input of the module. Output Filtering For low output ripple voltage, output capacitor with 1µF ceramic and 1µF tantalum capacitors are needed to comply with the published ripple and noise specifications. To reduce the output ripple and improve the dynamic response to a step load change, additional capacitance at the output can be used. Low ESR polymer and ceramic capacitors are recommended to improve the dynamic response of the module. For stable operation of the module, limit the capacitance to less than the maximum output capacitance as specified in the output specification table. Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 8 / 37

29 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. Vout Iout Efficiency = Vin Iin 1% Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 9 / 37

30 Mechanical Data TOS -xxsil DOH-5T PIN FUNCTION 1 VOUT TRIM 3 GND VIN 5 ON/OFF TOS -xxsm Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 3 / 37

31 Recommended pad layout for TOS -xxsil Recommended Pad Layout Recommended pad layout for TOS -xxsm Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 31 / 37

32 Mechanical Data TOS 1-xxSIL and TOS 1-xxSIL PIN FUNCTION 1 Vo Vo 3 +SENSE Vo 5 GND GND 7 Vin 8 Vin 9 Trim 1 ON/OFF Bottom View Side View TOS 1-xxSM and TOS 1-xxSM Bottom Vies Side View Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 3 / 37

33 Recommended Pad Layout Recommended pad layout for TOS 1-xxSIL and TOS 1-xxSIL Recommended pad layout for TOS 1-xxSM and TOS 1-xxSM Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 33 / 37

34 Lead free wave solder profile for TOS xx-xxsil Soldering and Re-flow Considerations Zone Preheat zone Actual heating Reference Parameter. Rise temp. speed: 3 C/sec max. Preheat temp.: 1~13 C Peak temp.: 5~ C Peak time (T1+T time): ~ sec Lead free re-flow profile for TOS xx-xxsm Zone Preheat zone Actual heating Cooling Reference Parameter. Rise temp. speed: 1~3 C/sec Preheat time: ~sec Preheat temp.: 155~185 C Rise temp. speed: 1~3 C/sec Melting time: ~ sec Melting temp: C Peak temp.: 3~ C Peak time: 1~ sec Rise temp. speed: -1~-5 C/sec Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 3 / 37

35 Packaging information for TOS -xxsil Packaging Information Notes: 1. Material : PS (thick = 1.mm) Packaging information for TOS -xxsm Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 35 / 37

36 Packaging Information Packaging information for TOS 1-xxSIL and TOS 1-xxSIL Notes: 1. Material : PS (thick = 1.mm) Packaging information for TOS 1-xxSM and TOS 1-xxSM Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 3 / 37

37 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 A (TOS ), 15A (TOS 1) and A (TOS 1). 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 the TOS DC/DC converters has been calculated using Bellcore TR-NWT-33 Case I: 5% stress, Operating Temperature at C (Ground fixed and controlled environment) TOS -xxsil and TOS -xxsm: TOS 1-5SIL and TOS 1-5SM: TOS 1-1SIL and TOS 1-1SM: TOS 1-5SIL and TOS 1-5SM: TOS 1-1SIL and TOS 1-1SM: MTBF is hours MTBF = 1,8x1 7 hours MTBF = 1,9x1 7 hours MTBF = 1,8x1 7 hours MTBF = 1,9x1 7 hours Created by Traco Electronic AG Arp. Date: April 3 rd, 7 / Rev.: 1. / Page 37 / 37