Texas Instruments TPS2390EVM User Manual Download Page 1 | Manualshive

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User’s Guide

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User’s Guide

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Summary of Contents for TPS2390EVM

Page 1: ...User s Guide 1 User s Guide...

Page 2: ...handling or use of the goods Please be aware that the products received may not be regulatory compliant or agency certified FCC UL CE etc Due to the open construction of the product it is the user s...

Page 3: ...rtainty as to the load specification please contact a TI field representative During normal operation some circuit components may have case temperatures greater than 50 C The EVM is designed to operat...

Page 4: ...truments TI The TPS2390 and TPS2391 are negative voltage hot swap controllers intended for use in systems needing to hot swap telecom distribution level voltages They integrate inrush current control...

Page 5: ...nnection of the user s electronic or resistive load if desired The board also contains two through hole patterns for the installation of large value aluminum electrolytic capacitors This capacitance i...

Page 6: ...February 2003 6 Evaluation Modules for Simple 48 V Hot Swap Controllers Figure 1 Evaluation Module Top Assembly 2 2 EVM Schematic Diagram and List of Materials The EVM schematic diagram is shown in F...

Page 7: ...USER C1 1000 pF 1 2 3 4 5 SW1 TP1 RED D1 C8 USER 1 TP2 OFF ON ENABLE TP12 TP10 J2 48 V_IN TP8 S2 TP11 TP9 S1 OFF ON J1 48 V_RTN TP5 POWER 1 C6 100 F 100 V C7 100 F 100 V R5 20 k 1 W SUB85N10 R4 20 m 0...

Page 8: ...02 0 5W 1 Vishay Dale WSL 2010 020 1 R5 R6 2 2 Resistor 20 k 1W 5 Venkel CR2512 1W203J Q1 1 1 XSTR MOSFET N channel V BR 100V Vishay Siliconix SUB85N10 10 J1 J2 J3 J4 4 4 Jack banana non insulated PC...

Page 9: ...d return current J4 5 A Ambient operating temperature range 40 85 C 1 All voltages are with respect to the PCB 48 V_IN node at J2 2 Currents are positive into and negative out of the specified termina...

Page 10: ...t 48 V Verify the supply current limit is set to allow at least 3 A Turn off the power supply 4 Connect the EVM and test equipment as shown in Figure 3 5 On the oscilloscope set the channel amplifiers...

Page 11: ...e input supply voltage level The scope should have acquired a sweep similar to that shown in Figure 4 The brief fault timing ramp which is shown in Figure 4 may or may not be present depending on the...

Page 12: ...test point on device reference node TP9 48V RTN The high side of input power to the EVM When used in conjunction with a lab supply this connects TP11 48V_RTN The high side of in ut ower to the EVM Whe...

Page 13: ...ted A 25 m resistor is the closest approximate standard value that is readily available A smaller value resistor is also adequate but carries a corresponding increase in the maximum current limit 4 4...

Page 14: ...ed maximum slew rate in amperes second 4 5 Fault Timing with the TPS2390 TPS2391 Whenever the hot swap controller is limiting current to the load an on chip timer is monitoring this operation against...

Page 15: ...t to VIN with a maximum specification value of 36 V This setting is targeted at general telecom applications However it is possible to raise the minimum start up threshold and potentially tighten the...

Page 16: ...t that any license either express or implied is granted under any TI patent right copyright mask work right or other TI intellectual property right relating to any combination machine or process in wh...

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