a t iv e T ent High Effiency DC /DC Converter 20 Watt TSI-20N Series TSI-20N series is a small size (33×21.5×6mm size) and light weight ( g) step-down DC-DC converter with 20W. Since it can operate from ultra low output voltage of 0.8V, it can be used for latest DSP, ASIC applications. High efficiency, ulra high-speed response by synchronous rectification topology. No external components required. Input: +3.3V/+5.0V Output: +1.8V, +2.0V, +2.5V, +3.3V (+0.8V ~ +3.6V) Features - High-speed response - Non-Isolated Type Converter - Ultra high Efficiency 93% - Amazing Minimum Size - ON/OFF Control - Operating Temp. -40°C~+85°C - Adjustable Output - No Heat Sink required - Latest Power-IC adopted - High Reliability, High Performance - Synchronous Rectification Circuit - Additional external capacitor not required - Short-Circuit, Over-Current Protection Model Standard Input Input Voltage Output Output Non-Load Ripple & Efficiency Package Voltage Range Voltage Current Current Noise Vdc Vdc~Vdc Vdc A mA(typ) mVpp(typ) %(typ) type SIP 6 3 40 93 DIP TSI 20N-0510V TSI 20N-0510D 5.0 +3.0~5.5 (*1) +3.3(0.8~3.6) TSI 20N-0510S SMD (*1) Input Voltage should be 0.5V or more higher than output voltage. Specification Standard Output Voltage When Vadj pin is open, output voltage will be set at +3.3V. (The accuracy of output V setting is ±3% max.) Adjustable Output V Rang Output Voltage is adjustable according to the range above. Line Reg. 0.7%typ. 1.5%max. (For the regulation of Input Voltage Range 3.8~5.5V) Load Reg. 2.0%typ. 4.0%max. (For 0~6A of Load Reg., at Rating Input. Temp. Coefficient ±0.02%/°C typ. (For the change of Operating Temp. -10°C~+50°C) Ripple & Noise 120mVpp max. (Rating Input, Rating Output, Room Temp.) (Measurements Frequency Band Width 20MHz) Efficiency 93% (Rating Input/ Output, Room Temp., Refer Table 1) Over-Current Protection Operates at 105% or moreRating Load Current, auto recovery type. Avoid long time of short-circuit condition. Over-Voltage Protection None Standby Current 2.4mA typ. Remote ON/OFF Between 1pin(ON/OFF) 5~8pin(S.GND) [Open: Output ON, Short: Output OFF(Refer to application)] Remote Sensing The voltage between converter's output pin voltage between 7-8pin and sensing voltage difference [voltage between 6-9pin] is 10% of sensing voltage (0.1V~0.3V) or below. Operating Temp. Range Operating Temp. -40°C~+85°C (Refer to the thermal derating graph.) Storage Temp. Range Storage Temp. -40°C~+85°C Humidity Range 20% ~ 95%R.Hmax. (Max. Wet-bulb Temp. 35°C, non-condensing) Cooling Condition Refer to the thermal derating graph Vibration 5~10Hz Every amplitude 10mm (3directions, each for 1hour), 10~55Hz acceleration 2G (3directions, each for 1hour) Weight 4g typ. External Dimensions SIP type W=24 L=33 H=5.0 typ. (mm ) (For dimensions refer to outline.) DIP type W=22.25 L=33 H=6.0 typ. (mm ) (For dimensions refer to outline.) SMD type W=23.9 L=33 H=6.0 typ. (mm ) (For dimensions refer to outline.) * The above specification will be provided at rating value, when there is no specified condition described. 1 T e n ta tiv e TSI 20N Series 1. TSI 20N-0510V (SIP type) 5.0m ax 33m ax 1 12 0.5 3.0typ on/off 2 Vin 3 Vin Vin 5 GND 6 GND 7 GND 8 GND 9 Vout - Dimensions: mm 10 Vout - Dimension difference with 11 Vout 12 V.ADJ Pin Function 0.25 P2.54×11=27.94 Function 1 4 24max 3.5±1.5 21.5(+1,-0.5) 0.8 1.0typ Pin nothing specified ±0.5 2. TSI 20N-0510D (DIP type) 33m ax C/L 13 0.25 12 6.0max 1 22.25±0.6 21.5(+1,-0.5) 24 3.5±1.5 0.5 P2.54×11=27.94 Pin Function 1 on/off 11 Vout 2 Vin 12 V.ADJ 3 Vin 13 NC 4 Vin 14 +S 5 GND 15 -S 6 GND 22 NC 7 GND 23 P-Good 8 GND 24 NC Function 9 Vout 10 Vout Pin Function Pin 1 on/off 11 Vout 2 Vin 12 V.ADJ 3 Vin 13 NC 4 Vin 14 +S 4 Vin 15 -S 5 GND 22 NC 6 GND 23 P-Good 7 GND 24 NC 8 GND 24 NC 8 GND 9 Vout 10 Vout - Dimensions: mm - Dimension difference with nothing specified ±0.5 3. TSI 20N-0510S (SMD type) 33m ax C/L 13 23.9 ±0.8 21.5(+ 1,-0.5 ) 24 A 12 Detailed figure of com ponent 0.5 0 ~ 10° A 0.25 6.0m ax 1 (1.2) P2.54×11=27.94 - Dimensions: mm - Dimension difference with nothing specified ±0.5 2 T e n ta tiv e TSI 20N Series Standard Connection Circuit Diagram V out V out V in TSI20N BSV Series S eries V in C1 +S R1 V adj on/off GND Load C2 R2 -S SW O pen = O n S hort= O ff Figure 6 R 1:V out D own s etted res istor R 2:V out U P setted resis tor Note 1: When not using the ON/OFF control, keep ON/OFF pin open. Note 2: When not adjusting output, keep V.ADJ pin open. Note 3: When it includes inductance in input line or switch ing element is connected to the input side or the wire is long, to fulfill the performance C1 will be required. Also to lower the input impedance we recommend a pattern that has an additional C1, and to verify on a actual equipment. Or, by adding C2 you can lower the output ripple more. Recommended Capacitor C1=33 µF10WV C2=2.2 µF~22µF C2: An output capacitor is built-in so it is not required, however by connecting 2.2 µF~22 µF you can lower the noise more Note 4: There is no +S, Pin in TSI 20N-0510V SIP type. Method of Adjusting Output Voltage When using at 3.3V without adjusting output voltage, keep V.ADJ pin (12Pin) open. By connecting a resistor between +Vout pin (9~11Pin)~V.ADJ pin (12Pin), you can adjust the output voltage in the range of 0.8~3.3V. (Vout Down Control) By connecting a resistor between Vadj pin (12Pin)~GND pin (5~8Pin), you can adjust the output voltage in the range of 3.3V~3.6V. (Vout Up Control) To calculate external resistance, please refer to the equation below. After calculating external resistance, please check output voltage and adjust resistance value. To set in the range of 0.8V~3.3V 9,10 ,1 1 +V ou t BSV S eries Rx Rz 12 R1 Lo ad -Rz Rx × Ry × Vs R2= Ry (Vo-Vs) -Rx × Vs -Rz Ry R2 5,6,7,8 Rx × Ry (Vo-Vs) Rx × Vs-Ry (Vo-Vs) To set in the range of 3.3V~3.6V V .AD J Vs R1= Vo= Requested output V Adjustable voltage range=0.8~3.6V Rx=10.2k ohm Ry=2.7k ohm GND Rz=0.1K ohm Figure 7 Vs=0.703V 3 a t iv e T ent TSI 20N Series Remote ON/OFF Control - ON/OFF Function By using this ON/OFF control function, the output can be ON/OFF controlled without intermitting input. This is an effective function when composing a power supply system sequence. And this can also be used as a power standby function for saving power control. TSI20N B SV Series S eries - Not using ON/OFF Function To not use the ON/OFF function, keep ON/OFF pin open. 1 - Method of ON/OFF Control Between ON/OFF pin (1Pin ) and S.GND (5~8Pin) Open ---- Output=ON Short ---- Output=OFF (0~0.7V 1•A max.) 5,6,7,8 G ND E xam ple on/off or To prevent reverse connection of Input Power Supply (ex.) FUS E +V in +V out 9,10,11 2,3,4 This prodcut is a non-isolated type DC-DC converter that steps-down from (+) to (+). If you connect the input voltage reversed by mistake, on/off +Vin D1 TSI20N B SV S eries Series 1 V .A D J 12 Load it will be damaged. 5,6,7,8 If there is a possibility of reverse connection, please add a protection as the right figure. GND The right figure is an example using huse and diode. Over-Voltage Protection (ex.) FUS E This product does not have a built-in over-voltage protection. +V in 9 ,1 0,11 2 ,3 ,4 +V out If the switching element in this converter is damaged in short mode input voltage +Vin will be output as is. However, to prepare for damage at over-voltage mode, we recommend to add a circuit to intercept the supplying power circuit. SCR o n/off + V in 1 TSI20N BSV Series S eries V .A D J 12 O verV oltage detec tion circuit L oa d 5 ,6 ,7 ,8 Note1: When it is damaged at over-voltage mode, ON/OFF control does not operate. G ND Note2: When there is a ON/OFF function on the supplying power side, this may be used. Note 3: Be sure that the DC power supply on the supplying side has the capacity to fuse the fuse. Soldering Conditions Solder under the following conditions. 340°C~360°C within 3sec. 2. With soldering dip 240°C~260°C within 10sec. 3. Reflow method (only for SMD type) Temp. M ain heating 1. With soldering iron P reheating Preheating Temp.: 150±10°C, within 1min. Main heating temp.: 235°Cmax. 10sec max. Reflowing frequency: once T im e 4 TSI 20N Series Block Diagram V in 4 V in 3 V in 2 V o ut 9 V o ut 10 V o ut 11 P O W E R @ IC L1 +S 14 c on trol C1 Rz VFB+ VFB- P-Good ON/OFF C2 Rx Ry G ND 5 G ND 6 O N /O F F 1 P -G o od 23 V .A D J 12 G ND 7 G ND 6 -S 15 * There is no P-Good, +S, -S pin inTSI 20-0510S (SIP type). Thermal Derating Please set this product in a place with good circulation. And when using this product in an environment that ambient temp. is 40°C or more, please refer to the thermal derating below. 1 .5m /s 1 00 90 L oa d C u rre nt D eratin g ra te (% ) 0 .5m /s 80 0 m/s 70 60 50 40 30 20 10 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 85 Am bien t Te m p. (°C ) 5 a ti v e T ent TSI 20N Series Method to decrease noise Usually TSI 20N series is used adding an input/output capacitor, and making the most of the converter's performance and to decrease the noise more, consider the following items when designing the M a k e th e lo o p sp a c e s ma ll print board. + V in 1. Use low impedance capacitor which has good high frequency +V out M a k e th e lo o p sp a c e s ma ll + V in TSI20N characteristic. lead inductance. 3. Make the wiring loop space small between the (+) and (-) of both input -V in Load C1 GND M a k e th e le a d sh o rt and output pin side as much as possible. You can decrease the effect + V o ut BSV Series Series + V in 2. Shorten lead of each capacitor as much as possible, and make it low C2 M a k e th e le a d sh o rt of leakage inductance. 4. Design the print pattern of the main circuit thick and short as much as possible. Precautions Reliability Test - For this product parallel/ series operation is not possible. - For mounting this product, please do not use connector or socket. The Test Items Test Conditions performance may not be fulfilled by the effect of contacting resistor. Low-temp. storage -40°C 1000hrs. Leave without energizing Mount to print board by soldering. High-temp. storage +85°C 1000hrs. Leave without energizing Heat shock -40°C~+125°C 30min. Each 100cycle - This product has a built-in over-current, short protection, but long time of short circuit will cause failure, so please avoid that. - May not be used in a use of that would affect lives or properties directly by the failure of this product. Please confrim before adopting. - Product can not be used under oscillation, strike or temp. condition that are out of the specification. Contact for any questions. High-temp. Load +85°C 1000hrs. Rating input, output 3.3V (3A) Withstand humidity load +40°C 90~9%RH 1000hrs. Leave at rating input/ output Withstand flux Leave in IPA for 5min. Solder withstand heat 260°C±5°C 10sec. And 350°C±10°C for 3sec. Oscillation 5~10Hz Every amplitude 10mm, - There is possibility of damage from static. When the worker has electrified static, electrical discharge by grounding, and recommend 10^55Hz Acceleration 2G (3directions, each for 1 hour) Striking - This product does not have a built-in fuse. Connect a huse to the Acceleration 20G (3directions, 3times each), Striking time 11±6ms working on a table grounded. Evaluation +input line for protection when over-current flows into input at Should be nothing extraordinary in electrilcal characteristics and appearance abnormal. Please be sure that the supplying power has the capacity before or after the test. to cut the fuse. - This product does not have a built-in over-voltage protection. When over-voltage occurs by the abnormality in the module there is a mode that input voltage comes out at output as it is, and this may cause smoke and ignition. To prevent this, be sure to add over-voltage protection. - There is no test result report attached for this product. Jenatschstrasse 1 • CH-8002 Zurich • Switzerland Tel. +41-1284 2911 • Fax +41-1201 1168 • e-mail: sales @ traco.ch • internet: http://www.tracopower.com 6