TPS2590EVM

User's Guide SLUU373A – July 2009 – Revised June 2014 TPS2590 Hot Swap Controller Evaluation Module This user’s guide describes the setup and operation of the TPS2590 evaluation module. 1 2 3 4 5 6 7 8 9 Contents Introduction ................................................................................................................... 2 Description .................................................................................................................... 2 2.1 Applications .......................................................................................................... 2 2.2 Features .............................................................................................................. 2 EVM Block Diagram ......................................................................................................... 3 Schematic ..................................................................................................................... 4 Bill of Materials ............................................................................................................... 5 EVM PCB Layout ............................................................................................................ 6 Circuit Description ........................................................................................................... 8 7.1 Test Points ........................................................................................................... 8 7.2 Connectors .......................................................................................................... 8 7.3 Jumpers .............................................................................................................. 8 7.4 Switches ............................................................................................................. 8 EVM Test Setup.............................................................................................................. 9 8.1 Test Equipment ..................................................................................................... 9 8.2 Equipment Supplied ................................................................................................ 9 8.3 Recommended Test Setup ........................................................................................ 9 8.4 Operation ........................................................................................................... 10 Test Results ................................................................................................................. 10 List of Figures 1 TPS2590EVM Block Diagram .............................................................................................. 3 2 TPS2590EVM Schematic ................................................................................................... 4 3 Component Placement (Top View) 4 5 6 7 8 ....................................................................................... 6 Board Layout (Top View) ................................................................................................... 6 Board Layout (Bottom View) ............................................................................................... 7 Component Placement (Bottom View) .................................................................................... 7 Equipment Connections..................................................................................................... 9 Example Scope Trace ..................................................................................................... 10 List of Tables 1 TPS2590EVM Bill of Materials ............................................................................................. 5 2 Test Points .................................................................................................................... 8 3 Connectors 4 Jumpers ....................................................................................................................... 8 5 EVM Configurations ......................................................................................................... 9 ................................................................................................................... SLUU373A – July 2009 – Revised June 2014 Submit Documentation Feedback TPS2590 Hot Swap Controller Evaluation Module Copyright © 2009–2014, Texas Instruments Incorporated 8 1 Introduction 1 www.ti.com Introduction This user’s guide describes the features of the TPS2590EVM. The TPS2590 schematic, printed-circuit board (PCB) layout, and bill of materials (BOM) are provided as well as a setup and getting started. 2 Description The EVM is a 3- to 18-V module using the TPS2590 or TPS2591 hot swap controller with integrated MOSFET. At power on, the output is power limited to control inrush current and protect the MOSFET. On an overcurrent condition, the controller interrupts power to the load at high speed and signals load status. Operating current, fault current and fault timer settings are hardware programmable. 2.1 Applications Server: • Plug-in Circuit Boards • RAID / Disk Drive Telecom: • ATCA • Micro-ATCA General Hot Plug 2.2 Features • • • • • • • • • • • 3- to 20-V operation Controlled inrush current Fast circuit breaker control Hardware programmable – Operating current – Fault current – Fault timer to avoid nuisance tripping – Latch off or retry. TPS2590 is pin selectable LED status display A slide switch controls the ENABLE signal The area under the TPS2590 is copper pour with vias to the internal ground to take advantage of the power pad package On-board transorb for overvoltage input protection A common diode at the output prevents a negative spike if the load is removed while powered on Test points available to monitor circuit operation Design Calculator Tool (http://www.ti.com/product/TPS2590/toolssoftware) All trademarks are the property of their respective owners. 2 TPS2590 Hot Swap Controller Evaluation Module Copyright © 2009–2014, Texas Instruments Incorporated SLUU373A – July 2009 – Revised June 2014 Submit Documentation Feedback EVM Block Diagram www.ti.com 3 EVM Block Diagram Figure 1 shows the EVM block diagram. POWER TPS2590 LOAD+ FAULT INDICATOR ENABLE GND LOAD- Figure 1. TPS2590EVM Block Diagram SLUU373A – July 2009 – Revised June 2014 Submit Documentation Feedback TPS2590 Hot Swap Controller Evaluation Module Copyright © 2009–2014, Texas Instruments Incorporated 3 Schematic 4 www.ti.com Schematic Figure 2 shows the EVM schematic. Figure 2. TPS2590EVM Schematic 4 TPS2590 Hot Swap Controller Evaluation Module SLUU373A – July 2009 – Revised June 2014 Submit Documentation Feedback Copyright © 2009–2014, Texas Instruments Incorporated Bill of Materials www.ti.com 5 Bill of Materials Table 1 lists the BOM for the EVM. Table 1. TPS2590EVM Bill of Materials Count RefDes Value Description Size Part Number MFR 2 C1, C3 0.1uF Capacitor Ceramic, 25V, X7R, 10% 0603 STD muRata 1 C2 1000pF Capacitor, Ceramic, 25V, X7R, 20% 0603 STD muRata 1 C4 .56uF Capacitor, Ceramic, 10V , X7R, 10% 0805 STD muRata 1 C5 1uF Capacitor, Ceramic, 25V, X7R, 20% 1206 STD muRata 1 C6 .1uF Capacitor Ceramic, 25V, X7R, 10% 0603 STD muRata 1 D1 LN1271R Diode, LED, Red, 20-mA, 0.9-mcd 0.068 x 0.049 inch LN1271R Panasonic 1 D2 MMBZ522 Diode, Zener, 4.3V, 350mW 9B SOT23 MMBZ5229B Motorola 1 D3 SMAJ18A Diode, SMT TVS 400W, 1-A, 18V SMA SMAJ18A Diodes 1 D4 MBR130L SFT1 Diode, Schottky, 1000-mA, 30-V SOD123 MBR130LSFT1 STD 4 J1, J2, J4, J5 7693 Screw Terminal 0.310 x 0.310 inch 7693 Keystone 1 J3 PEC02SA Header, 2-pin, 100mil spacing AN 0.100 inch x 2 PEC02SAAN Sullins 1 Q1 MMBT390 Bipolar, PNP, 40-V, 200-mA, 225-mW 6LT1 SOT23 MMBT3906LT1 On Semi 1 R1 0 Resistor, Chip, 1/16W, 1% 0603 STD Vishay 1 R2 499 Resistor, Chip, .5W, 1% 2512 STD STD 1 R3 10K Resistor, Chip, 1/16W, 5% 0603 STD Vishay 1 R4 1K Resistor, Chip, 1/16W, 1% 0603 STD Vishay 1 R5 10K Resistor, Chip, 1/16W, 1% 0603 STD Vishay 1 R6 20K Resistor, Chip, 1/16W, 5% 0603 STD Vishay 1 R7 300 Resistor, Chip, 1/10W, 5% 0805 STD Vishay 1 R8 40.2K Resistor, Chip, 1/16W, 1% 0603 STD Vishay 1 R9 49.9K Resistor, Chip, 1/16W, 1% 0603 STD Vishay 1 S1 09-03201- Switch, SPDT, Slide, PC-mount, 500-mA 02 0.400 x 0.100 inch 09-03201-02 EAO 7 TP1, TP2, TP3, TP4, TP5, TP6, TP9 5012 Test Point, White, Thru Hole 0.125 x 0.125 inch 5012 Keystone 4 TP10, TP11, TP12, TP13 GND Test Point, SM, 0.150 x 0.090 0.185 x 0.135 inch 5016 Keystone 4 TP7, TP8, TP14, TP15 Test Point, 0.062 Hole 0.250 inch 5012 Keystone 1 U1 IC, 3V to 20V Integrated FET Load Switch QFN-16 TPS2590RSA TI TPS2590 RSA SLUU373A – July 2009 – Revised June 2014 Submit Documentation Feedback TPS2590 Hot Swap Controller Evaluation Module Copyright © 2009–2014, Texas Instruments Incorporated 5 EVM PCB Layout 6 www.ti.com EVM PCB Layout Figure 3 through Figure 6 illustrate the board outline drawings. Figure 3. Component Placement (Top View) Figure 4. Board Layout (Top View) 6 TPS2590 Hot Swap Controller Evaluation Module Copyright © 2009–2014, Texas Instruments Incorporated SLUU373A – July 2009 – Revised June 2014 Submit Documentation Feedback EVM PCB Layout www.ti.com Figure 5. Board Layout (Bottom View) Figure 6. Component Placement (Bottom View) SLUU373A – July 2009 – Revised June 2014 Submit Documentation Feedback TPS2590 Hot Swap Controller Evaluation Module Copyright © 2009–2014, Texas Instruments Incorporated 7 Circuit Description www.ti.com 7 Circuit Description 7.1 Test Points Table 2 lists the test point descriptions. Table 2. Test Points 7.2 Name Description VIN Input voltage power supply 4.3 V 4.3-V reference EN Enable signal, high true FLT Fault signal, low true LATCH Latch signal, high true, low for retry VOUT Output voltage CT Fault timer capacitor GND Scope ground test point GND Scope ground test point GND Scope ground test point GND Scope ground test point Connectors Table 3 lists the connector descriptions. Table 3. Connectors 7.3 Connector Description J1 Main power input, VIN J2 Main power ground, GND J4 Load J5 Load ground, GND Jumpers R1 is used to disconnect the LEDs for test measurement of TPS2590 quiescent current. This 0-Ω resistor is normally installed. Table 4 provides the jumper description of jumper J3. Table 4. Jumpers 7.4 7.4.1 Jumper Description J3 TPS2590 Only Off = Latch, On = Retry Switches Enable Switch S1 The ENABLE slide switch turns on the hot plug controller to ramp the output voltage. When the switch is off, the output is off. 7.4.2 Indicators Red LED indicator for FAULT (FLT). 8 TPS2590 Hot Swap Controller Evaluation Module Copyright © 2009–2014, Texas Instruments Incorporated SLUU373A – July 2009 – Revised June 2014 Submit Documentation Feedback EVM Test Setup www.ti.com 8 EVM Test Setup 8.1 Test Equipment Voltage Source: The input voltage source, VIN is a 20-V variable dc source at 10 A. Oscilloscope: A digital oscilloscope can be used to monitor the test points. Current Probe: A current probe is helpful to observe turn-on characteristics of the external load. Recommended Wire Gague: Power is limited to 5 W; 18-gage wire, minimum, is recommended. 8.2 Equipment Supplied The TPS2590EVM module configured with TPS2590 is supplied. Table 5. EVM Configurations Evaluation Module Component HPA490EVM-001 TPS2590 spacer 8.3 Recommended Test Setup Figure 1 illustrates the equipment connections for power up and testing. • Connect the positive voltage input power supply to J1 and the negative voltage to GND, J2. Connectors J1 and J2 can accept #6 ring or spade lugs. • Connect the RC load at J4 and the load return at J5. The example here uses 220 µF, 15 Ω. • Scope to current probe to measure the load current. • Scope the VOUT and EN. Current Probe + Power Supply 12V@10A EN/ Vout - Scope J1 J4 J2 J5 220 µF 15 O Note: Connects to Scope Figure 7. Equipment Connections SLUU373A – July 2009 – Revised June 2014 Submit Documentation Feedback TPS2590 Hot Swap Controller Evaluation Module Copyright © 2009–2014, Texas Instruments Incorporated 9 EVM Test Setup 8.4 www.ti.com Operation Use the following steps for EVM operation: 1. Turn on the power supply. 2. Trigger the scope on EN low-going edge. 3. Slide the EN to the EN position as screened on the circuit board. 9 Test Results Observe waveforms similar to Figure 8. • The current to the load is not constant but increases after the initial inrush. Current is low, initially, because the voltage across the internal MOSFET is initially at its highest level and the controller is power-limiting the MOSFET. • Although the current limit, IFLT, is set to 4 A, the start up current never goes above 2.2 A because of the power limiting. However, 4 A is available to the steady state load when the MOSFET is fully enhanced. • At the end of the capacitor charge time, the current drops to the dc level powering the resistive part of the load, about 0.8 A. Refer to SLUS960 for more details. Figure 8. Example Scope Trace 10 TPS2590 Hot Swap Controller Evaluation Module Copyright © 2009–2014, Texas Instruments Incorporated SLUU373A – July 2009 – Revised June 2014 Submit Documentation Feedback Revision History www.ti.com Revision History Changes from Original (July 2009) to A Revision ........................................................................................................... Page • • • • • • • • • • Added Design Calculator tool and link to the list of features. ....................................................................... Changed device name in title of Figure 1. ............................................................................................. Changed schematic, Figure 2............................................................................................................ Changed contents of BOM. .............................................................................................................. Added Component Placement (Bottom View) image. ................................................................................ Changed Board Layout (Top View) image. ............................................................................................ Changed Board Layout (Bottom View) image. ........................................................................................ Added Component Placement (Bottom View) image. ................................................................................ Changed entire content of first paragraph in the Test Points section. ............................................................. Changed R9 to R1 in first paragraph of Jumpers section. ........................................................................... 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