GS120/175T48 Family 120W/175W DC-DC CONVERTERS FAMILY Type Vi Vo Io GS120T48-3.3 GS120T48-3.3E 38 to 60 V 3,35 V 35 A GS175T48-5 GS175T48-5E 38 to 60 V 5,075 V 35 A GS175T48-12 GS175T48-12E 38 to 60 V 12,0 V 15 A GS175T48-15 GS175T48-15E 38 to 60 V 15,0 V 12 A FEATURES UL, CSA, TUV approved High output power (up to 175W) High efficiency (82% typ. on GS175T48-5 module) Parallel operation with equal current sharing Synchronization pin Remote ON/OFF Remote load voltage sense compensation Output short-circuit protection Undervoltage lock-out Minimal overshoot during load transients Output overvoltage protection 500VDC input to output isolation voltage Internal input and output filtering Softstart PCB or chassis mountable Optional additional finned heatsink Mechanical dimensions 125 • 66,5 • 19 (4,92 • 2,62 • 0,75) DESCRIPTION The GS120/175T48family includes 120/175W DCDC converters used to generate fixed isolated output voltages with an output current up to 35A from a wide range input voltage (38 to 60V). The suffix E Identifies the metric threading on the planar heatsink (see fig. 1). OPTION Type Ordering Number Description Thermal Resistance Dimensions L • W • H mm (inches) HS01 Additional finned heatsink (See fig. 7) 2.8°C/W 125 • 66.5 • 15 ( 4.92 • 2.62 • 0.59) June 1994 1/10 GS120/175T48 FAMILY GS120T48-3.3ELECTRICAL CHARACTERISTICS (Tamb = 25°C unless otherwise specified) Symbol Parameter Test Conditions Min Typ Max Unit Input Voltage Vo = 3.35V Io = 0 to 35A (Operating Conditions) 38 48 60 VDC Input Undervoltage Lockout Vo = 3.35V Io = 0 to 35A 32 34 36 VDC Average Input Current Vi = 0 to 60V Io = 35A 4.2 A Inrush Transient Peak Current Vi = 60V Io = 35A 0.2 A s Reflected Input Current Vi = 38 to 60V BW = 5Hz to 20MHz Io = 35A (See fig. 2) 20 mApp Vien Enable Input Voltage Vi = 38 to 60V Io = 0 to 35A 1.2 V lien Enable Input Current Vi = 38 to 60V Io = 0 to 35A Vien = 0V -1 mA Inhibit Voltage Vi = 38 to 60V Io = 0 to 35A Vien = open 18 V Pi Input Power Vi = 38 to 60V Io = 0A (No Load) 1.5 2 W Vo Total Output Voltage Regulation Vi = 38 to 60V Io = 0 to 35A 3.25 3.35 3.45 V Vost Short-term Output Voltage Regulation Vi = 38 to 60V Io = 0 to 35A 3.30 3.35 3.40 V Vots Total Static Tolerance Vi = 38 to 60V Io = 0 to 35A 3.28 3.35 3.42 V Vol Output Overvoltage Limit Initiation Vi = 38 to 60V Io = 0 to 35A 4 4.5 5.2 VDC Vor Output Ripple Voltage Vi = 38 to 60V Io = 35A 20 30 mVpp Von Output Noise Voltage Vi = 38 to 60V Io = 35A 50 80 mVpp ∆Vo Total Remote Sense Compensation Vi = 38 to 60V 0.6 V δVo Peak Load Transient Response Vi = 48V δIo = 5A slope = 0.1A/µs 60 mVp Vi Viuv li lipk lir Viinh 0 8 2 Io Output Current Vi = 38 to 60V Vo = 3.35V 0 35 A Iol Overcurrent Limit Initiation Vi = 48V 36 39 A Iosc Shortcircuit Output Current Vi = 48V Vo = 0.2 to 0.5V 51 A ts Load Transient Settling Time Vi = 48V δIo = 5A slope = 0.1A/µs 200 µs ton Turn-on Time Vi = 48V Io = 35A Vien = from high to low 5 ms Vi = 0 to 60V Vien = low Vis Isolation Voltage fs Switching Frequency η Io = 35A 3 10 500 V Vi = 38 to 60V Io = 0 to 35A 160 175 Efficiency Vi = 38 to 60V Io = 35A 76 77 Case to Ambient 200 kHz % °C/W R th Thermal Resistance Tcop Operating Case Temperature Range – 10 +85 °C Tstg Storage Temperature Range – 40 +105 °C 2/10 5.2 GS120/175T48 FAMILY GS175T48-5 ELECTRICAL CHARACTERISTICS (Tamb = 25°C unless otherwise specified) Parameter Symbol Vi Viuv li lipk lir Test Conditions Min Typ Max Unit Input Voltage Vo = 5.075V Io = 0 to 35A (Operating Conditions) 38 48 60 VDC Input Undervoltage Lockout Vo = 5.075V Io = 0 to 35A 32 34 36 VDC Average Input Current Vi = 0 to 60V 6.1 A Inrush Transient Peak Current Vi = 60V Io = 35A 0.2 A2 s Reflected Input Current Vi = 38 to 60V BW = 5Hz to 20MHz Io = 35A (See fig. 2) 30 mApp 1.2 V -1 mA 18 V 1.5 2 W Io = 35A Vien Enable Input Voltage Vi = 38 to 60V Io = 0 to 35A lien Enable Input Current Vi = 38 to 60V Io = 0 to 35A Vien = 0V Inhibit Voltage Vi = 38 to 60V Io = 0 to 35A Vien = open Pi Input Power Vi = 38 to 60V Io = 0A (No Load) Vo Total Output Voltage Regulation Vi = 38 to 60V Io = 0 to 35A 4.94 5.075 5.21 V Vost Short-term Output Voltage Regulation Vi = 38 to 60V Io = 0 to 35A 5.002 5.075 5.148 V Vots Total Static Tolerance Vi = 38 to 60V Io = 0 to 35A 4.97 5.075 5.18 V Output Overvoltage Limit Initiation Vi = 38 to 60V Io = 0 to 35A 6 6.3 7 VDC 30 mVpp Viinh Vol 0 8 Vor Output Ripple Voltage Vi = 38 to 60V Io = 35A 20 Vi = 38 to 60V Io = 35A 50 Von Output Noise Voltage ∆Vo Total Remote Sense Compensation Vi = 38 to 60V δVo Peak Load Transient Response Vi = 48V δIo = 5A slope = 0.1A/µs Io Output Current Vi = 38 to 60V Vo = 5.075V 0 Iol Overcurrent Limit Initiation Vi = 48V 36 39 A Iosc Shortcircuit Output Current Vi = 48V Vo = 0.2 to 0.5V 51 A ts Load Transient Settling Time Vi = 48V δIo = 5A slope = 0.1A/µs 250 µs ton Turn-on Time Vi = 48V Io = 35A Vien = from high to low 5 ms Vi = 0 to 60V Vien = low Io = 35A 3 80 mVpp 0.6 V 100 mVp 35 A 10 Vis Isolation Voltage fs Switching Frequency Vi = 38 to 60V Io = 0 to 35A 160 175 η Efficiency Vi = 38 to 60V Io = 35A 81 82 Case to Ambient 500 V 200 kHz % °C/W R th Thermal Resistance Tcop Operating Case Temperature Range – 10 +85 °C Tstg Storage Temperature Range – 40 +105 °C 5.2 3/10 GS120/175T48 FAMILY GS175T48-12 ELECTRICAL CHARACTERISTICS (Tamb = 25°C unless otherwise specified) Parameter Symbol Vi Viuv li lipk lir Test Conditions Min Typ Max Unit Input Voltage Vo = 12V Io = 0 to 15A (Operating Conditions) 38 48 60 VDC Input Undervoltage Lockout Vo = 12V Io = 0 to 15A 32 34 36 VDC Average Input Current Vi = 0 to 60V 5.5 A Inrush Transient Peak Current Vi = 60V Io = 15A 0.2 A2 s Reflected Input Current Vi = 38 to 60V BW = 5Hz to 20MHz Io = 15A (See fig. 2) 20 mApp 1.2 V -1 mA 18 V 1.5 2 W Io = 15A Vien Enable Input Voltage Vi = 38 to 60V Io = 0 to 15A lien Enable Input Current Vi = 38 to 60V Io = 0 to 15A Vien = 0V Inhibit Voltage Vi = 38 to 60V Io = 0 to 15A Vien = open Pi Input Power Vi = 38 to 60V Io = 0A (No Load) Vo Total Output Voltage Regulation Vi = 38 to 60V Io = 0 to 15A 11.4 12.0 12.6 V Vost Short-term Output Voltage Regulation Vi = 38 to 60V Io = 0 to 15A 11.76 12.0 12.24 V Vots Total Static Tolerance Vi = 38 to 60V Io = 0 to 15A 11.64 12.0 12.36 V Output Overvoltage Limit Initiation Vi = 38 to 60V Io = 0 to 15A 13.2 14 15 VDC Viinh Vol 0 8 Vor Output Ripple Voltage Vi = 38 to 60V Io = 15A 35 70 mVpp Von Output Noise Voltage Vi = 38 to 60V Io = 15A 60 120 mVpp ∆Vo Total Remote Sense Compensation Vi = 38 to 60V 0.6 V δVo Peak Load Transient Response Vi = 48V δIo = 3A slope = 0.2A/µs 200 mVp Io Output Current Vi = 38 to 60V Vo = 12V 0 15 A Iol Overcurrent Limit Initiation Vi = 48V 16 19 A Iosc Shortcircuit Output Current Vi = 48V 25 A ts Load Transient Setting Time Vi = 48V δIo = 3A slope = 0.2A/µs 300 µs ton Turn-on Time Vi = 48V Io = 15A Vien = from high to low 5 ms Vi = 0 to 60V Vien = low Io = 15A 3 10 Vis Isolation Voltage fs Switching Frequency Vi = 38 to 60V Io = 0 to 15A 160 175 η Efficiency Vi = 38 to 60V Io = 15A 84 86 Case to Ambient 500 V 200 kHz % °C/W R th Thermal Resistance Tcop Operating Case Temperature Range – 10 +85 °C Tstg Storage Temperature Range – 40 +105 °C 4/10 5.2 GS120/175T48 FAMILY GS175T48-15 ELECTRICAL CHARACTERISTICS (Tamb = 25°C unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Input Voltage Vo = 15V Io = 0 to 12A (Operating Conditions) 38 48 60 VDC Input Undervoltage Lockout Vo = 15V Io = 0 to 12A 32 34 36 VDC Average Input Current Vi = 0 to 60V 5.5 A Inrush Transient Peak Current Vi = 60V Io = 12A 0.2 A2 s Reflected Input Current Vi = 38 to 60V Io = 12A 20 mApp Vien Enable Input Voltage Vi = 38 to 60V Io = 0 to 12A lien Enable Input Current Vi = 38 to 60V Io = 0 to 12A Vien = 0V Inhibit Voltage Vi = 38 to 60V Io = 0 to 12A Vien = open Pi Input Power Vi = 38 to 60V Io = 0A (No Load) Vo Total Output Voltage Regulation Vi = 38 to 60V Io = 0 to 12A Short-term Output Voltage Regulation Vi Viuv li lipk lir Viinh Vost Io = 12A 0 1.2 V -1 mA 18 V 1.5 2 W 14.25 15.0 15.75 V Vi = 38 to 60V Io = 0 to 12A 14.7 15.0 15.3 V 8 Total Static Tolerance Vi = 38 to 60V Io = 0 to 12A 14.55 15.0 15.45 V Vol Output Overvoltage Limit Initiation Vi = 38 to 60V Io = 0 to 12A 16.5 17 18 VDC Vor Output Ripple Voltage Vi = 38 to 60V Io = 12A 45 90 mVpp Von Output Noise Voltage Vi = 38 to 60V Io = 12A 75 150 mVpp ∆Vo Total Remote Sense Compensation Vi = 38 to 60V 0.6 V δVo Peak Load Transient Response Vi = 48V δIo = 3A slope = 0.2A/µs 200 mVp Io Output Current Vi = 38 to 60V Vo = 15V 0 12 A Iol Overcurrent Limit Initiation Vi = 48V 13 16 A Iosc Shortcircuit Output Current Vi = 48V Vo = 0.2 to 0.5V 21 A ts Load Transient Settling Time Vi = 48V δIo = 3A slope = 0.2A/µs 300 µs ton Turn-on Time Vi = 48V Io = 12A Vien = from high to low 5 ms Vots Vi = 0 to 60V Vien = low Io = 12A 3 10 Vis Isolation Voltage fs Switching Frequency Vi = 38 to 60V Io = 0 to 12A 160 175 η Efficiency Vi = 38 to 60V Io = 12A 86 88 Case to Ambient 500 V 200 kHz % °C/W R th Thermal Resistance Tcop Operating Case Temperature Range – 10 +85 °C Tstg Storage Temperature Range – 40 +105 °C 5.2 5/10 GS120/175T48 FAMILY CONNECTION DIAGRAM AND MECHANICAL DATA Figure 1. Package T. Dimensions in mm (inches). PIN DESCRIPTION Pin Function Description 1 - IN Negative input voltage. 2 + IN Positive input voltage. Unregulated input voltage (typically 48V) must be applied between pin 1-2. 3 ON/OFF 4 CASE Case connection pin. 5 SYNC Synchronization pin. See figures 3, 4, 5, 6. Open when not used. 6 PARALLEL 7 + SENSE Senses the remote load high side. To be connected to pin 11,12 when remote sense is not used. 8 - SENSE Senses the remote load return. To be connected to pin 9,10 when remote sense is not used. In parallel configuration, take care to connect all -S pins together (see figures 3,4,5,6). The converter is ON (Enable) when the voltage applied to this pin with reference to pin 1 is lower than 1.2V (see Vien). The converter is OFF (Inhibit) for a control voltage in the range of 8 to 18V. When the pin is unconnected the converter is OFF (Inhibit). Parallel output. See figures 3, 4, 5, 6. Open when not used. 9,10 - OUT Fixed output voltage return. 11,12 + OUT Fixed output voltage. 6/10 GS120/175T48 FAMILY USER NOTES Reflected Input Current The reflected input current measurement (lir, see Electrical Characteristics) is performed according to the test set-up of fig. 2. Figure 2. Softstart To avoid heavy inrush current the output voltage rise time is 10ms maximum in any condition of load. Remote Sensing The remote voltage sense compensation range is for a total drop of 0.6V equally shared between the load connecting wires. It is a good practice to shield the sensing wires to avoid oscillations. See the connection diagram on figures 3, 4, 5, 6. Remote ON/OFF The module is controlled by the voltage applied between the ON/OFF pin and -IN pin. The converter is ON (Enable) when the voltage applied is lower than 1.2 V (see Vien on Electrical Characteristics). The converter is OFF (Inhibit) for a control voltage in the range of 8 to 18V (see Viinh). When the pin is unconnectedthe converter is OFF. Maximum sinking current is 1mA. Module Protection The module is protected against occasional and permanent shortcircuits of the output pins to ground, as well as against output current overload. It uses a current limiting protection circuitry, avoiding latch-up problems with certain type of loads. A crowbar output overvoltage protectionis activated when the output voltage exceeds the specified values (see Electrical Characteristics). Parallel Operation To increase available output regulated power, the module features the parallel connection possibility with equal current sharing and maximum deviation of 10% (two modules in parallel). See the connection diagram on figures 3, 4, 5, 6. 7/10 GS120/175T48 FAMILY Figure 3. Figure 4. Figure 5. Figure 6. Finned heatsink option An additional finned heatsink is available (type ordering number HS01) to allow the user to decrease the total thermal resistance of the module to a typical value of 2.8 °C/W. The heatsink is suitable both for standard (4-40 UNC threading) and E version (M3 threading); screw length in the range of 6 to 8 mm (0.24 to 0.32”). See fig. 7. 8/10 GS120/175T48 FAMILY Figure 7. - HS01 Heatsink. Dimensions in mm (inches). Thermal Characteristics Following figures show the behaviour at still air and forced ventilation operation of the GS175T48 -5 mo d u le (t y p ic a l e f f ic ie n cy 8 2 % ) wit h o u t (fig. 8) and with the additional finned HS01 heatsink (fig. 9) Figure 8. - GS175T48-5 with stadard flat heatsink. 9/10 GS120/175T48 FAMILY Figure 9. - GS175T48-5 with additional HS01 finned heatsink Safety approvals The converter is agency certified to the following safety requirements. Agency Requirements License Number UL UL-STD-1950 E141284 CSA CSA-STD-C22.2 No.234 (level 3) LR 99794-2 TUV EN 60950 DIN VDE 0805 R 9272137 UL is a registered trademark of UNDERWRITERS LABORATORIES inc. CSA is a registered trademark of CANADIAN STANDARDS ASSOCIATION. TUV is a registered trademark of TUV Rheinland. Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. 1994 SGS-THOMSON Microelectronics – All Rights Reserved UL is a registered trademark of UNDERWRITERS LABORATORIES inc. CSA is a registered trademark of CANADIAN STANDARDS ASSOCIATION. TUV is a registered trademark of TUV Rheinland. SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. 10/10