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Texas Instruments SN6507DGQEVM Скачать руководство пользователя страница 4

3 EVM Setup and Operation

CAUTION

Note that this EVM is for operating-parameter evaluation only and not designed for isolation voltage
testing. Any voltage applied above the 36-V maximum recommended operating voltage or load
current applied above the 500-mA maximum recommended switching current of SN6507 may
damage the EVM.

SN6507DGQ is designed to sink a maximum amount of current up to 500 mA through its SW1
and SW2 pins and connect to up to 36 V inputs. Care must be taken to ensure transformer power
parameters are not exceeded if they are lower than SN6507 limits.

This section describes the setup and operation of the EVM for parameter-performance evaluation. The EVM is
configured for a 24 V input and an unregulated 15 V output. It comes with an SN6507DGQ unit installed in place
of U2 and a 24 V IN to 15 V, 500 mA OUT transformer in place of T1. This EVM can also be configured for
evaluation of various transformers and voltage input and output combinations by replacing the included push-pull
transformer device in place of T1. A list of recommended commercially available transformers is listed in the
SN6507 datasheet.

shows the basic setup of the EVM with an input power supply needed to evaluate device

performance. Power this Evaluation Module by connecting a voltage to VIN that is within the Recommended
Operating Range in the SN6507 device datasheet. Typical voltage levels for the VIN are 24 V and 12 V,
respectively. Both grounds of the EVM may be shorted together for evaluation. In practice, shorting the non-
isolated and isolated grounds would bypass the isolation barrier and is not recommended.

Figure 3-1. Basic SN6507DGQEVM Operation

EVM Setup and Operation

4

SN6507DGQEVM Low-Emissions 500 mA Push-Pull Transformer Driver for
Isolated Power Supplies Evaluation Module

SLLU346 – APRIL 2022

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Copyright © 2022 Texas Instruments Incorporated

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Содержание SN6507DGQEVM

Страница 1: ...tion 4 4 EVM Configuration Options 5 5 Bill of Materials 8 6 EVM Schematic and PCB 10 List of Figures Figure 2 1 SN6507DGQEVM Radiated Emissions Sweep at Full Load per CISPR 32 Class B 3 Figure 3 1 Basic SN6507DGQEVM Operation 4 Figure 4 1 SN6507 Pinout 5 Figure 4 2 SN6507DGQEVM Top View 5 Figure 6 1 SN6507DGQEVM Schematic 10 Figure 6 2 SN6507DGQEVM Top PCB Layout 11 Figure 6 3 SN6507DGQEVM Bottom...

Страница 2: ...and 8 pin packages that fit on the PCB s T1 footprint Isolated power supplies help block high voltages and prevent noise currents from entering isolated grounds and interfering with or damaging sensitive circuitry They are required to preserve an isolation barrier in systems using isolated devices requiring discrete power supplies The complementary output signals SW1 and SW2 from the SN6507 are gr...

Страница 3: ...acteristics such as enable delay rise and fall times soft start duration and power consumption for different load conditions This EVM offers provisions for a wide range of configurations as detailed in Section 4 www ti com Overview SLLU346 APRIL 2022 Submit Document Feedback SN6507DGQEVM Low Emissions 500 mA Push Pull Transformer Driver for Isolated Power Supplies Evaluation Module 3 Copyright 202...

Страница 4: ...f T1 This EVM can also be configured for evaluation of various transformers and voltage input and output combinations by replacing the included push pull transformer device in place of T1 A list of recommended commercially available transformers is listed in the SN6507 datasheet Figure 3 1 shows the basic setup of the EVM with an input power supply needed to evaluate device performance Power this ...

Страница 5: ...y commercially available push pull isolation transformers The EVM PCB is shown in Figure 4 2 Figure 4 2 SN6507DGQEVM Top View Details for the various configuration options of the SN6507 EVM are listed below Pin configurations using RCs Configuration options for pin adjustable features of SN6507 including Enable UVLO SW1 SW2 switching frequency CLK duty cycle control slew rate adjustment soft start...

Страница 6: ...oubling outputs using the Vout net by populating D1 and D4 on the EVM Make sure the output LDO U1 is bypassed by disconnecting pins 1 2 of J4 if R9 is removed since the ISO_GND potential will be floating Ferrite bead options To reduce emissions when power supply outputs are connected to long cables or have high ringing ferrites can be soldered in place of R15 R14 R6 R7 and R8 A ferrite with 1 kΩ i...

Страница 7: ... 2 of J9 to use the default switching slew rate of SN6507 or connect pins 2 3 to adjust the slew rate using RSR If J9 is completely disconnected SN6507 will use its default slew rate J10 1 MHz ADJ CLK_IN Connect pins 5 6 of J10 for SN6507 to use the internal 1 MHz clock for switching SW1 and SW2 Connect pins 3 4 of J10 to use an adjustable clock value based on the resistance of RCLK Connect pins 1...

Страница 8: ... 200 V 58 pF CFP3 PMEG200G20ELRX Nexperia H1 H2 H3 H4 4 Bumpon Hemisphere 0 44 X 0 20 Clear Transparent Bumpon SJ 5303 CLEAR 3M J1 J2 J8 J11 4 Conn Term Block 2POS 3 5 mm TH 11x8 5x7 3 mm 1751248 Phoenix Contact J3 J10 2 Header 2 54 mm 3x2 Gold SMT Header 2 54 mm 3x2 SMT TSM 103 01 L DV Samtec J4 J7 J12 3 Header 2 54 mm 2x1 Gold SMT Header 2 54 mm 2x1 SMT 61000218321 Wurth Elektronik J6 J9 J13 3 H...

Страница 9: ...hunt 2 pos 100 mil 881545 2 TE Connectivity T1 1 24 V 15 V TRANSFORMER SMT_XFRMR_9MM45_8MM50 750319696 Wurth T1 0 Push Pull Transformer ER9 5 SMD8 24Vin 1 MHz Output 15 V 0 5 A SMT_XFRMR_12MM07_10MM3 TX1 ZB1459 BE Coilcraft T1 0 XFMR PUSH PULL 10 W 120 V USEC EP7 SMT SMT_XFRMR_10MM3_13MM2 PAG6356 086NLT Pulse Electronics T1 0 Transformer Turns Ratio 0 733 430uH 2 5kVAC 13 2x11 8x11 1mm SMT_XFRMR_1...

Страница 10: ...J3 TSM 103 01 L DV ISO_GND TP10 CLK_IN TP6 EN_IN 499k Ruv1 100k Ruv2 10uF C7 ISO_GND 10uF C2 10k R2 0 R9 20 5k Rsr 1 2 3 J9 Default SR SR adjust SR Control L1 L2 100nF C14 100nF C1 100nF C10 100nF C19 1 2 3 6 5 4 T1 750319696 36V D3 36V D6 1 2 3 4 5 6 7 8 ZB1459 BE 1 2 J7 1 2 J12 ISO_GND XP5 XP6 XP4 XP3 XP2 XP1 VIN XP1 XP2 XP3 XP4 XP5 XP6 XP1 XP2 XP3 XP6 XP5 XP4 1 2 3 6 5 4 PAG6356 086NLT Extra Tr...

Страница 11: ...yout www ti com Bill of Materials SLLU346 APRIL 2022 Submit Document Feedback SN6507DGQEVM Low Emissions 500 mA Push Pull Transformer Driver for Isolated Power Supplies Evaluation Module 11 Copyright 2022 Texas Instruments Incorporated ...

Страница 12: ...Layout Bill of Materials www ti com 12 SN6507DGQEVM Low Emissions 500 mA Push Pull Transformer Driver for Isolated Power Supplies Evaluation Module SLLU346 APRIL 2022 Submit Document Feedback Copyright 2022 Texas Instruments Incorporated ...

Страница 13: ...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...

Страница 14: ... 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...

Страница 15: ...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...

Страница 16: ... 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...

Страница 17: ...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...

Страница 18: ...o 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 will fully indemn...

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