Texas Instruments TPS7H4002EVM-CVAL User Manual Download Page 10 | Manualshive

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Texas Instruments TPS7H4002EVM-CVAL User Manual Download Page 10

4.5 Input Voltage Ripple

• Trigger CH1 of the oscilloscope on Phase Node and put the CH2 scope probe between test point TP6 (PVIN)

and TP23 (GND).

, the voltage ripple (ignoring the switching coupling to the input) is approximately 50 mV.

Figure 4-6. Input Voltage Ripple, VIN = 5 V, VOUT = 2.5 V, IOUT = 3 A

TPS7H4002EVM-CVAL Testing

10

TPS7H4002EVM-CVAL Evaluation Module

SLVUBI1 – MAY 2021

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Copyright © 2021 Texas Instruments Incorporated

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Summary of Contents for TPS7H4002EVM-CVAL

Page 1: ...ls BOM 16 7 Board Layout 18 List of Figures Figure 1 1 TPS7H4002EVM CVAL 1 Figure 4 1 Output Voltage Regulation 5 Figure 4 2 Output Voltage Ripple VIN 5 V VOUT 2 5 V IOUT 3 A 6 Figure 4 3 Output Soft Start Voltage VIN 5 V VOUT 2 5 V IOUT 3 A 7 Figure 4 4 Transient Response to Load Step 0 A to 3 A at 1 A µs 8 Figure 4 5 Transient Response to Load Step 3 A to 0 A at 1 A µs 9 Figure 4 6 Input Voltage...

Page 2: ...r 20 Figure 7 7 Bottom Solder 21 Figure 7 8 Bottom Overlay 21 Figure 7 9 Drill Drawing 22 Figure 7 10 Drill Table 22 Figure 7 11 Board Dimensions 23 List of Tables Table 2 1 Default EVM Configuration 3 Table 3 1 Summary of Connections 4 Table 6 1 TPS7H4002EVM CVAL Bill of Materials BOM 16 Trademarks All trademarks are the property of their respective owners Trademarks www ti com 2 TPS7H4002EVM CVA...

Page 3: ... of load supply for FPGAs microcontrollers data converters and ASICs Space satellite payloads Radiation hardened applications 2 TPS7H4002EVM CVAL Default Configuration Table 2 1 describes the default configuration of the TPS7H4002EVM CVAL listing the external components that define the converter design Table 2 1 Default EVM Configuration Parameter Specifications Description Input power supply 5 V ...

Page 4: ... e load across test points TP17 VOUT and TP26 GND A voltage meter can be used to monitor this voltage also 3 Oscilloscope a CH1 Connect the voltage scope probe to scope probe test point J4 PH to monitor the phase node DC coupled Full BW 2 V div Rising Edge Trigger at 0 5 V b CH2 Connect voltage scope probe to scope probe test point J9 VOUT to monitor the output voltage AC coupled BW 20 MHz 10 mV d...

Page 5: ...on Turn on the input DC source 5 V Turn on the e load and sweep the load current from 0 A to 3 A or higher to observe the margin the device has to the recommended operating condition of 3 A maximum The monitored output voltage at TP17 VOUT is at or near 2 5 V across the entire current load sweep as shown in Figure 4 1 Figure 4 1 Output Voltage Regulation www ti com TPS7H4002EVM CVAL Testing SLVUBI...

Page 6: ...tor the switching phase node and the output voltage ripple as shown in Figure 4 2 Figure 4 2 Output Voltage Ripple VIN 5 V VOUT 2 5 V IOUT 3 A TPS7H4002EVM CVAL Testing www ti com 6 TPS7H4002EVM CVAL Evaluation Module SLVUBI1 MAY 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Page 7: ...ching phase and the soft start profile of the output voltage as shown in Figure 4 3 Figure 4 3 Output Soft Start Voltage VIN 5 V VOUT 2 5 V IOUT 3 A www ti com TPS7H4002EVM CVAL Testing SLVUBI1 MAY 2021 Submit Document Feedback TPS7H4002EVM CVAL Evaluation Module 7 Copyright 2021 Texas Instruments Incorporated ...

Page 8: ...sponse to this load step to be about 50mV or 2 Figure 4 4 Transient Response to Load Step 0 A to 3 A at 1 A µs Change the trigger on CH3 to falling edge to capture the transient response of VOUT to negative current step from 3 A to 0 A as shown in Figure 4 5 Again transient deviation is approximately 50 mV ignoring peak envelope or 2 TPS7H4002EVM CVAL Testing www ti com 8 TPS7H4002EVM CVAL Evaluat...

Page 9: ...ransient Response to Load Step 3 A to 0 A at 1 A µs www ti com TPS7H4002EVM CVAL Testing SLVUBI1 MAY 2021 Submit Document Feedback TPS7H4002EVM CVAL Evaluation Module 9 Copyright 2021 Texas Instruments Incorporated ...

Page 10: ...GND As shown in Figure 4 6 the voltage ripple ignoring the switching coupling to the input is approximately 50 mV Figure 4 6 Input Voltage Ripple VIN 5 V VOUT 2 5 V IOUT 3 A TPS7H4002EVM CVAL Testing www ti com 10 TPS7H4002EVM CVAL Evaluation Module SLVUBI1 MAY 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Page 11: ...ncludes several connections to Picotest Bode100 test instruments is shown in Figure 4 8 Measurement results are shown in Figure 4 9 and in Figure 4 10 The CHF high frequency pole component of the compensation circuit is optional Omitting it results in slightly increased phase margin However the benefit of including it is that the gain curve is set in a downward trajectory as frequency increases ma...

Page 12: ...Response Test Setup Figure 4 9 Frequency Response IOUT 3 A TPS7H4002EVM CVAL Testing www ti com 12 TPS7H4002EVM CVAL Evaluation Module SLVUBI1 MAY 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Page 13: ...igure 4 10 Frequency Response IOUT 0 A www ti com TPS7H4002EVM CVAL Testing SLVUBI1 MAY 2021 Submit Document Feedback TPS7H4002EVM CVAL Evaluation Module 13 Copyright 2021 Texas Instruments Incorporated ...

Page 14: ...n the high side current limit threshold is exceeded where channel 4 is measuring the output current after the LC output filter As the output current exceeds the limit threshold the soft start pin Channel 3 is pulled low causing the switching node to slow significantly As soft start voltage drops the charge on the LC filter is discharged until the steady state threshold current limit is maintained ...

Page 15: ... 5 1 shows the EVM schematic Figure 5 1 TPS7H4002EVM CVAL EVM Schematic www ti com TPS7H4002EVM CVAL EVM Schematic SLVUBI1 MAY 2021 Submit Document Feedback TPS7H4002EVM CVAL Evaluation Module 15 Copyright 2021 Texas Instruments Incorporated ...

Page 16: ...544 3004 Molex J2 J5 J7 J8 4 Standard Banana Jack Uninsulated 5 5mm Keystone_575 4 575 4 Keystone J3 1 Header 100mil 2x1 Gold TH 2x1 Header TSW 102 07 G S Samtec J4 J9 2 Compact Probe Tip Circuit Board Test Points TH 25 per TH Scope Probe 131 5031 00 Tektronix L1 1 Shielded Power Inductor 2 2µH 12 1A 12 43mOhm Max 2SMD SMD2 XEL5050 222MEC Coilcraft LBL1 1 Thermal Transfer Printable Labels 0 650 W ...

Page 17: ... 0 1 uF 50 V 5 X7R 0805 0805 08055C104JAT2A AVX C9 C10 C11 C12 C13 0 22uF CAP CERM 22 uF 16 V 10 X7R 1210 1210 C3225X7R1C226K250AC TDK C16 C18 C19 0 330uF CAP Tantalum Polymer 330 uF 10 V 20 0 006 ohm 7343 43 SMD 7343 43 T530X337M010ATE006 Kemet C17 C22 0 0 1uF CAP CERM 0 1 uF 50 V 5 X7R 1206 1206 C1206C104J5RACTU Kemet C23 0 0 47uF CAP CERM 0 47 uF 50 V 10 X7R 0805 0805 C2012X7R1H474K125AB TDK FI...

Page 18: ...ustrate the layer stack of the TPS7H4002EVM CVAL board Figure 7 1 Top Overlay Figure 7 2 Top Solder Board Layout www ti com 18 TPS7H4002EVM CVAL Evaluation Module SLVUBI1 MAY 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Page 19: ...Figure 7 3 Layer 1 Top Layer Figure 7 4 Layer 2 GND www ti com Board Layout SLVUBI1 MAY 2021 Submit Document Feedback TPS7H4002EVM CVAL Evaluation Module 19 Copyright 2021 Texas Instruments Incorporated ...

Page 20: ...7 5 Layer Three Signal Figure 7 6 Layer Four Bottom Layer Board Layout www ti com 20 TPS7H4002EVM CVAL Evaluation Module SLVUBI1 MAY 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Page 21: ...Figure 7 7 Bottom Solder Figure 7 8 Bottom Overlay www ti com Board Layout SLVUBI1 MAY 2021 Submit Document Feedback TPS7H4002EVM CVAL Evaluation Module 21 Copyright 2021 Texas Instruments Incorporated ...

Page 22: ...Figure 7 9 Drill Drawing Figure 7 10 Drill Table Board Layout www ti com 22 TPS7H4002EVM CVAL Evaluation Module SLVUBI1 MAY 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Page 23: ...Figure 7 11 Board Dimensions www ti com Board Layout SLVUBI1 MAY 2021 Submit Document Feedback TPS7H4002EVM CVAL Evaluation Module 23 Copyright 2021 Texas Instruments Incorporated ...

Page 24: ...other than TI b the nonconformity resulted from User s design specifications or instructions for such EVMs or improper system design or c User has not paid on time Testing and other quality control techniques are used to the extent TI deems necessary TI does not test all parameters of each EVM User s claims against TI under this Section 2 are void if User fails to notify TI of any apparent defects...

Page 25: ... These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation...

Page 26: ...y for convenience and should be verified by User 1 Use EVMs in a shielded room or any other test facility as defined in the notification 173 issued by Ministry of Internal Affairs and Communications on March 28 2006 based on Sub section 1 1 of Article 6 of the Ministry s Rule for Enforcement of Radio Law of Japan 2 Use EVMs only after User obtains the license of Test Radio Station as provided in R...

Page 27: ... any interfaces electronic and or mechanical between the EVM and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electrical shock hazard User assumes all responsibility and liability for any improper or unsafe handling or use of the EVM by User or its employees affiliates contractors or designees 4 4 User assumes all...

Page 28: ...OR DAMAGES ARE CLAIMED THE EXISTENCE OF MORE THAN ONE CLAIM SHALL NOT ENLARGE OR EXTEND THIS LIMIT 9 Return Policy Except as otherwise provided TI does not offer any refunds returns or exchanges Furthermore no return of EVM s will be accepted if the package has been opened and no return of the EVM s will be accepted if they are damaged or otherwise not in a resalable condition If User feels it has...

Page 29: ...s are subject to change without notice TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource Other reproduction and display of these resources is prohibited No license is granted to any other TI intellectual property right or to any third party intellectual property right TI disclaims responsibility for and you wi...

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