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4.3 Test Setup

shows the typical test setup for the TPS2640EVM. Connect T1/T3 to the power supply and T2/T4 to

the load.

Figure 4-1. EVM Test Setup

General Configurations

SLVUBX9 – OCTOBER 2020

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TPS2640EVM: Evaluation Module for TPS2640

7

Copyright © 2020 Texas Instruments Incorporated

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Содержание TPS2640EVM

Страница 1: ...Restart From Latch Off Mode 12 Figure 4 6 J5 J12 Floating Current Limit 2 23 A Circuit Breaker With Auto Retry Mode 12 Figure 4 7 Output Short Circuit Protection 13 Figure 4 8 Reverse Polarity Protec...

Страница 2: ...g voltage range 0 2 A to 2 23 A jumper programmable current limit Reverse polarity protection up to 42 V Programmable input UVLO Selectable overload fault response auto retry latch and circuit breaker...

Страница 3: ...n be monitored at TP5 and TP14 with a scaling factor of 1 5 V A Table 2 1 TPS2640EVM Options and Setting Part Number EVM Function VIN Range VIN UVLO VINOVP Current Limit Output Overvoltage Selectable...

Страница 4: ...24 RTN2 1 2 J10 TP17 GND TP18 GND 1uF 100V C11 Vout1 Vout1 Vin1 Vin1 Vin2 Vin2 Vout2 Vout2 1 2 J6 1 2 J13 100k R4 100k R17 36V D4 36V D10 1 2 36V D2 1 2 36V D8 1 2 J15 1 2 J16 D3 D5 0 1uF C1 0 1uF C7...

Страница 5: ...Description J1 J1 CH1 fault LED pulled to VIN1 if installed J2 J2 CH1 output power indicator LED pulled to VOUT1 if installed J3 J3 CH1 bulk output capacitor connects to VOUT1 if installed J4 MODE CH1...

Страница 6: ...t and thermal shutdown D6 D9 GREEN LED Output power indicator CH1 CH2 output power indicators respectively LED turns on whenever the output voltage is available 4 2 Test Equipment 4 2 1 Power Supplies...

Страница 7: ...TPS2640EVM Connect T1 T3 to the power supply and T2 T4 to the load Figure 4 1 EVM Test Setup www ti com General Configurations SLVUBX9 OCTOBER 2020 Submit Document Feedback TPS2640EVM Evaluation Modu...

Страница 8: ...Enable the power supply and the load 6 Connect the negative probe of the DMM to TP7 or TP18 test points the positive probe to the respective test points and verify that the voltages shown in Table 4 6...

Страница 9: ...for the Output Voltage Start Up Test Oscilloscope Setting CH1 Probe Points CH2 Probe Points Channel 1 10 V div VOUT1 TP3 VOUT2 TP12 Channel 2 10 V div VIN1 TP2 VIN2 TP11 Channel 3 20 V div FLTb1 TP1 F...

Страница 10: ...ime base 100 ms div Note Measuring the current limit value on the oscilloscope can easily cause 10 error from the typical expected values as listed in Table 4 9 2 Set the current limit to 2 23 A by in...

Страница 11: ...stance to 6 1 and enable the load 11 Enable the power supply and verify the current limit magnitude the latch off fault response waveform as shown in the Figure 4 4 Figure 4 4 J5 J12 1 2 Position Curr...

Страница 12: ...with auto retry by uninstalling the J4 J11 jumper 17 Set the load resistance to 6 1 and enable the load 18 Enable the power supply and verify the circuit breaker with auto retry fault response wavefor...

Страница 13: ...div Input current into T1 Ve wire Input current into T3 Ve wire Trigger source Channel 1 Trigger level 12 V 1 V Trigger polarity Falling Trigger mode Single Time base 2 ms div 2 Set the load resistanc...

Страница 14: ...1 V Trigger polarity Falling Trigger mode Single Time base 10 ms div 2 Set the power supply voltage to 42 V and disable the power supply 3 Connect ve terminal of the power supply to either T1 T3 ve t...

Страница 15: ...28 V and load of 1 A at the output 3 Now apply transient input voltage 28 V to 40 V for 20 ms and verify the Overvoltage clamp response as Figure 4 9 shows Figure 4 9 Overvoltage Clamp Response www t...

Страница 16: ...nent placement and layout of the EVM Figure 5 1 Top Side Placement Figure 5 2 Top Layer Figure 5 3 Bottom Layer EVM Board Assembly Drawings and Layout Guidelines www ti com 16 TPS2640EVM Evaluation Mo...

Страница 17: ...X 0 20 Clear Transparent Bumpon SJ 5303 CLEAR 3M J1 J2 J3 J6 J8 J9 J10 J13 J15 J16 10 Header 100mil 2x1 Gold TH Sullins 100mil 1x2 230 mil above insulator PBC02SAAN Sullins Connector Solutions J4 J7 J...

Страница 18: ...lock 2x1 5 08mm TH 10 16x15 2x9mm 282841 2 TE Connectivity TP1 TP4 TP5 TP10 TP13 TP14 6 White Test Point TH Multipurpose White Keystone5012 5012 Keystone Equivalent Any TP2 TP3 TP11 TP12 4 Red Test Po...

Страница 19: ...ther 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 tec...

Страница 20: ...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 in...

Страница 21: ...instructions set forth by Radio Law of Japan which includes but is not limited to the instructions below with respect to EVMs which for the avoidance of doubt are stated strictly for convenience and s...

Страница 22: ...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 electr...

Страница 23: ...R 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 Furthe...

Страница 24: ...e resources 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 reprod...

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