Texas Instruments TPS7B4255EVM-062 Скачать руководство пользователя страница 11 | Manualshive

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Texas Instruments TPS7B4255EVM-062 Скачать руководство пользователя страница 11

Figure 4-5. Internal Layer 3

Figure 4-6. Internal Layer 4

Figure 4-7. Bottom Layer Routing

Figure 4-8. Bottom Assembly Layer and Silkscreen

Board Layout

SLVUCA5 – JUNE 2022

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TPS7B4255EVM-062 Evaluation Module

11

Copyright © 2022 Texas Instruments Incorporated

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Содержание TPS7B4255EVM-062

Страница 1: ...4255 Q1 low dropout linear regulator LDO Included in this user s guide are setup and operating instructions thermal and layout guidelines a printed circuit board PCB layout a schematic diagram and a b...

Страница 2: ...3 3 TPS7B4255EVM 062 Load Transient Results 50 A to 70 mA Load Step 9 Figure 3 4 TPS7B4255EVM 062 Load Transient Results 70 mA to 50 A Load Step 9 Figure 4 1 Top Assembly Layer and Silkscreen 10 Figu...

Страница 3: ...hat are connected to the main power supply The following warnings are noted for the safety of anyone using or working close to the TPS7B4255EVM 062 Observe all safety precautions WARNING Failure to ad...

Страница 4: ...5QDYBRQ1 U1 100V 1uF C2 DNP 100V 1 F C5 DNP 50V 1uF C9 DNP VO 1 FB NC 2 GND 4 GND 5 GND 6 GND 3 VI 8 EN 7 PAD 9 TPS7B8401QWDRBRQ1 U2 VIN TP2 GND 1 2 3 4 5 6 J14 8V 17 8k R6 30 0k R7 48 7k R8 5V 3 3V G...

Страница 5: ...e connection and the GND terminal is the negative that is ground connection 3 1 3 EN EN is a 3 pin header used to enable or disable the TPS7B84 Q1 which in turn enables the TPS7B4255 Q1 The center pin...

Страница 6: ...n example as illustrated by the white boxes in Figure 3 2 The prepopulated capacitors are sized to ensure the minimum capacitance requirements are maintained under all normal operating conditions Opti...

Страница 7: ...board layout is designed such that the Iin current probe slot does not detect any current that goes to the TPS7B84 Q1 circuit or its peripherals during start up or during any other operational mode T...

Страница 8: ...per in the current path can reduce this ringing 10 AWG wire can be used as needed If ringing persists install damping networks by adding a series resistor and capacitor in parallel with VIN Locations...

Страница 9: ...rated in Figure 3 3 and Figure 3 4 the TPS7B4255 Q1 transient response is very fast and the output voltage recovers in well under 1 ms after the initial load transient Use a pulse duration limit of 1...

Страница 10: ...most at risk of raising the junction temperature during normal operation The LDO may become hot to the touch during normal operation see the thermal impedance discussion in the TPS7B4255 Q1 data sheet...

Страница 11: ...rnal Layer 4 Figure 4 7 Bottom Layer Routing Figure 4 8 Bottom Assembly Layer and Silkscreen www ti com Board Layout SLVUCA5 JUNE 2022 Submit Document Feedback TPS7B4255EVM 062 Evaluation Module 11 Co...

Страница 12: ...J21 3 SMA Straight Jack Gold 50 Ohm TH SMA Straight Jack TH 901 144 8RFX Amphenol RF J3 J4 J20 3 Standard Banana Jack insulated 10A red 571 0500 571 0500 DEM Manufacturing J5 J11 2 Header 100mil 2x1...

Страница 13: ...omotive T R 0805 CGA4J1X7R1H475 K125AC TDK Corporation C2 C3 C6 0 1uF CAP CERM 1 uF 100 V 10 X7R 1206 1206 C3216X7R2A105K1 60AA TDK C5 0 1uF CAP CERM 1 F 100 V 10 X7R AEC Q200 Grade 1 0805 0805 08051C...

Страница 14: ...5 0805 RL1220S 1R0 F Susumu Co Ltd R5 R17 0 1 00k RES 1 00 k 1 0 125 W AEC Q200 Grade 0 0805 0805 ERJ 6ENF1001V Panasonic R9 R10 R11 R12 R13 0 154 RES 154 1 0 5 W 1210 1210 RC1210FR 07154R L Yageo R14...

Страница 15: ...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 16: ...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 17: ...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 18: ...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 19: ...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 20: ...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 thes...

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