Texas Instruments TPS40130EVM-001 User Manual
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Texas Instruments TPS40130EVM-001 User Manual

Texas Instruments TPS40130EVM-001 User Manual

12-v input, 1.5-v output, 40-a two phase synchronous buck converter using the tps40130
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12-V Input, 1.5-V Output, 40-A Two Phase Synchronous
The TPS40130EVM-001 evaluation module (EVM) is a high efficiency, two phase
synchronous buck converter providing a fixed 1.5-V output at up to 40 A from a 12-V
input bus. The EVM is designed to start up from a single supply, so no additional bias
voltage is required for start-up. The module uses the TPS40130 high frequency two
phase controller.
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SLUU208 - October 2004
Buck Converter Using the TPS40130
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= 4 A to 40 A
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With R14
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List of Figures
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= 10 V to 14 V,
12V_IN
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= 20 A
1V5_OUT
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(20 mv/div), Time 10 µs/div
(20 mV/div), Time 10 µs/div
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List of Tables
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SLUU208 - October 2004
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User's Guide
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Summary of Contents for Texas Instruments TPS40130EVM-001

  • Page 1: Table Of Contents

    TPS40130EVM-001 Line Regulation, I = 20 A 1V5_OUT ............TPS40130EVM-001 Load Regulation TPS40130EVM-001 5 A to 55 A Transient Response, 5 A to 55 A at 3 A/µs, ........(20 mv/div), Time 10 µs/div 1V5_OUT (10A/div) 1V5_OUT(rip) TPS40130EVM-001 55 A to 5 A Transient Response, 55 A to 5 A at 3 A/µs, ........

  • Page 2: Description

    Description Description The TPS40130EVM-001 is designed to use a regulated 12-V (10-V to 14-V) bus to produce a high current, regulated 1.5-V output at up to 40 A of load current. The TPS40130EVM-001 uses a number of advanced technologies to improve its performance. Lossless DCR current sensing eliminates the need for a current sense resistor, reduces losses, and improves efficiency.

  • Page 3: Tps40130Evm-001 Electrical Performance Specifications

    TPS40130EVM-001 Electrical Performance Specifications TPS40130EVM-001 Electrical Performance Specifications Table 1. TPS40130EVM-001 Electrical and Performance Specifications PARAMETER TEST CONDITIONS UNIT INPUT CHARACTERISTICS Input voltage range Max input current = 10 V, I = 40 A No-load input current = 14 V, I...

  • Page 4: Schematics

    Schematics Schematics Figure 1. TPS40130EVM-001 Power Stage/Control Schematic 12-V Input, 1.5-V Output, 40-A Two Phase Synchronous Buck Converter Using the TPS40130 SLUU208 – October 2004...

  • Page 5: Tps40130Evm-001 Support Circuitry Schematic

    Schematics Figure 2. TPS40130EVM-001 Support Circuitry Schematic SLUU208 – October 2004 12-V Input, 1.5-V Output, 40-A Two Phase Synchronous Buck Converter Using the TPS40130...

  • Page 6: Adjusting V 1V5_Out

    Adjusting Overcurrent Protection (I The TPS40130EVM-001 is preconfigured with the overcurrent protection (OVP) set very high to allow the converter to deliver high-current, short duration loads, operate under higher loads with sufficient air flow, but still provide output short-circuit protection. To set the current limit to a lower value, change R19...

  • Page 7: Test Setup

    Using an External 5-V Supply (R32 and R33) The TPS40130EVM-001 is designed to be run from a single 12-V supply by incorporating a TL751 5-V LDO, however an external supply can be used if a separate 5-V bus is available in the target system. To use an external 5-V supply, connect it through 5V_IN (J7) and remove R32 and R33 to disconnect the LDO from the circuit.

  • Page 8: 1V5_Out

    4.1.5 Other FAN: The TPS40130EVM-001 includes components that can get hot to the touch. Because this EVM is not enclosed to allow probing of circuit nodes, a small fan capable of 200 to 400 lfm is required to reduce component surface temperatures to prevent user injury. The EVM should not be left unattended while powered or probed while the fan is not running.

  • Page 9: Tps40130Evm-001 Recommended Test Setup

    12V_IN2 5V_IN TPS40130EVM−001 Two Phase 12V to 1.5V @ 40A − 12V_IN Figure 3. TPS40130EVM-001 Recommended Test Setup Startup/Shutdown Procedure 1. Increase V (V1) from 0 Vdc to 10 Vdc 12V_IN 2. Vary LOAD1 from 0 Adc to 40 Adc 3.

  • Page 10: Tps40130Evm-001 Typical Performance Data And Characteristic Curves

    TPS40130EVM-001 Typical Performance Data and Characteristic Curves Equipment Shutdown 1. Shut down oscilloscope 2. Shut down LOAD1 3. Shut down V 12V_IN 4. Shut down fan TPS40130EVM-001 Typical Performance Data and Characteristic Curves Figure Figure Figure 6, and Figure 7 present typical performance curves for the TPS40130EVM-001.

  • Page 11: Tps40130Evm-001 Load Regulation

    Figure 6. TPS40130EVM-001 Load Regulation Transient Response 5.4.1 Positive Transient Figure 7. TPS40130EVM-001 5 A to 55 A Transient Response, 5 A to 55 A at 3 A/µs, (20 mv/div), Time 10 µs/div 1V5_OUT (10A/div) 1V5_OUT(rip) SLUU208 – October 2004...

  • Page 12: Evm Assembly Drawings And Layout

    EVM Assembly Drawings and Layout 5.4.2 Negative Transient Figure 8. TPS40130EVM-001 55 A to 5 A Transient Response, 55 A to 5 A at 3 A/µs, (20 mV/div), Time 10 µs/div 1V5_OUT (10A/div) 1V5_OUT(rip) EVM Assembly Drawings and Layout...

  • Page 13: Tps40130Evm-001 Component Placement (Top View)

    EVM Assembly Drawings and Layout Figure 9. TPS40130EVM-001 Component Placement (Top View) Figure 10. TPS40130EVM-001 Silkscreen (Top View) SLUU208 – October 2004 12-V Input, 1.5-V Output, 40-A Two Phase Synchronous Buck Converter Using the TPS40130...

  • Page 14: Tps40130Evm-001 Top Copper (Top View)

    EVM Assembly Drawings and Layout Figure 11. TPS40130EVM-001 Top Copper (Top View) Figure 12. TPS40130EVM-001 Layer 2 (X-Ray Top View) 12-V Input, 1.5-V Output, 40-A Two Phase Synchronous Buck Converter Using the TPS40130 SLUU208 – October 2004...

  • Page 15: Tps40130Evm-001 Layer 3 (X-Ray Top View)

    EVM Assembly Drawings and Layout Figure 13. TPS40130EVM-001 Layer 3 (X-Ray Top View) Figure 14. TPS40130EVM-001 Bottom Copper (X-Ray Bottom View) SLUU208 – October 2004 12-V Input, 1.5-V Output, 40-A Two Phase Synchronous Buck Converter Using the TPS40130...

  • Page 16: List Of Materials

    List of Materials List of Materials Table 4 lists the EVM components as configured according to the schematic shown in Figure 1 Figure (1) (2) (3) (4) Table 4. TPS40130EVM-001 Bill of Materials Count RefDes Description Size Part Number C1, C2, C29, Capacitor, ceramic, 22-µF, 16-V, X7R, 15%...

  • Page 17: 12-V Input, 1.5-V Output, 40-A Two Phase Synchronous Buck Converter Using The Tps40130

    List of Materials Table 4. TPS40130EVM-001 Bill of Materials (continued) Count RefDes Description Size Part Number R34, R35, Resistor, chip, 10-kΩ, 1/10-W, 1% R36, R37, R38, R39 Resistor, chip, 0-Ω Jumper, 1/10-W, 5% R41, R42 Resistor, chip, 22.6-kΩ, 1/10-W, 1% R43, R45 Resistor, chip, 124-kΩ, 1/10-W, 1%...
  • Page 18 TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions:...

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