Texas Instruments TIDA-070005 Design Manual
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Texas Instruments TIDA-070005 Design Manual

3- to 7-vin, 24-a iout, 0.95-vout, space-grade current sharing point-of-load (pol) reference design
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Design Guide: TIDA-070005
3- to 7-VIN, 24-A IOUT, 0.95-VOUT, Space-Grade Current
Sharing Point-of-Load (POL) Reference Design
Description
Some of the newest space grade FPGAs and ASICs
require low voltage and high currents for their core
power consumption, driving the need for a for space
grade DC/DC power conversion Point-of-Load POL
supply that provides a low voltage output and high
currents for their core power consumption. This
reference design provides a hardware example of POL
using four (4)
TPS50601A-SP
quadrature to generate a 24-A supply, this reference
design guide also provides details on how to properly
configure, clock, and evaluate the reference design
hardware which includes one mother board and four
daughter boards.
Resources
TIDA-070005
Design Folder
TPS50601A-SP
Product Folder
INA901-SP
Product Folder
TPS7A4501-SP
Product Folder
SE555-SP
Product Folder
SN54HC74-SP
Product Folder
SN54HC04-SP
Product Folder
SN74AHC1G04
Product Folder
ASK Our E2E™ Experts
TIDUEN1A – December 2018 – Revised August 2019
Submit Documentation Feedback
DC/DC converters in
3- to 7-VIN, 24-A IOUT, 0.95-VOUT, Space-Grade Current Sharing Point-of-
Copyright © 2018–2019, Texas Instruments Incorporated
Features
•
Stand-alone space rated clock generation
•
Built-in current sense monitoring
•
Multiple configurations to evaluate current sharing
of 2, 3, or 4 TPS50601A-SP POLs
•
Built-in space-grade regulated power supply for
control logic and clocking
•
Hardware support for mother and daughter board
•
Ability for external clock generation and use
•
Two board solution for ease of interchangeability of
design
•
Guided design details for support to build
personalized solution for system needs
Applications
•
Command and data handling
•
Satellite electrical power system (EPS)
•
Optical imaging payload
•
Radar imaging payload
•
Communications payload
Load (POL) Reference Design
1

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Summary of Contents for Texas Instruments TIDA-070005

  • Page 1 Product Folder SN74AHC1G04 Product Folder ASK Our E2E™ Experts TIDUEN1A – December 2018 – Revised August 2019 3- to 7-VIN, 24-A IOUT, 0.95-VOUT, Space-Grade Current Sharing Point-of- Load (POL) Reference Design Submit Documentation Feedback Copyright © 2018–2019, Texas Instruments Incorporated...
  • Page 2 An IMPORTANT NOTICE at the end of this TI reference design addresses authorized use, intellectual property matters and other important disclaimers and information. 3- to 7-VIN, 24-A IOUT, 0.95-VOUT, Space-Grade Current Sharing Point-of- TIDUEN1A – December 2018 – Revised August 2019 Load (POL) Reference Design Submit Documentation Feedback Copyright © 2018–2019, Texas Instruments Incorporated...

  • Page 3: System Description

    System Description The TIDA-070005 is a reference hardware example of a 24-A DC/DC power solution for space grade applications. The newest space grade FPGAs and ASICs require high currents for their core power consumption. These high current requirements drive a need for space grade DC/DC power conversion circuitry.

  • Page 4: Design Benefits

    – Hardware example can be scaled to greater current configurations with proper design and testing • High Level of Integration – All evaluation can be done with TIDA-070005 hardware, and external power supply/load – Integrated current sense monitoring – Integrated clocking and power management solution •...

  • Page 5: System Overview

    CLOCK, 270° OUT OF PHASE Figure 1. TIDA-070005 Block Diagram Design Considerations When using the TPS50601A-SP in master-slave mode (with either 1, 2 or 3 slaves), particular attention must be paid to the passive component values calculation for the EN, SS and COMP pins. This is because there is only set of passives (placed closely to the master) but they are connected to the respective pins of all slave devices.
  • Page 6 System Overview www.ti.com Highlighted Products The following section describes the important ICs that make up the TIDA-070005 24-A solution. 2.3.1 TPS50601A-SP The TPS50601A-SP is a radiation hardened, 7-V, 6-A synchronous step-down converter, which is optimized for small designs through high efficiency and integrating the high-side and low-side MOSFETs.
  • Page 7 The SN74AHC1G04 contains one inverter gate. The device performs the Boolean function Y = A. TIDUEN1A – December 2018 – Revised August 2019 3- to 7-VIN, 24-A IOUT, 0.95-VOUT, Space-Grade Current Sharing Point-of- Load (POL) Reference Design Submit Documentation Feedback Copyright © 2018–2019, Texas Instruments Incorporated...

  • Page 8: Required Hardware

    Hardware, Software, Testing Requirements, and Test Results www.ti.com Hardware, Software, Testing Requirements, and Test Results Required Hardware The TIDA-070005 consists of two boards, a mother board and 4 daughter boards. To get started with using the hardware, see Section 3.2.
  • Page 9 Note that in shutdown the output is turned off, and the divider current is zero. 3.1.1.1.2 System Clocking There are three clocking configurations available in the TIDA-070005 discussed as follows. 3.1.1.1.2.1 Quadrature Clocking This configuration implements a digital phase splitter to generate the quadrature clock. A 555 timer must be set to output at 2×f the desired end switching frequency of the POL.
  • Page 10 R205 and then discharges through R205 only. Therefore, the duty cycle is controlled by the values of R202 and R205 3- to 7-VIN, 24-A IOUT, 0.95-VOUT, Space-Grade Current Sharing Point-of- TIDUEN1A – December 2018 – Revised August 2019 Load (POL) Reference Design Submit Documentation Feedback Copyright © 2018–2019, Texas Instruments Incorporated...
  • Page 11 SN54HC04-SP in the system. TIDUEN1A – December 2018 – Revised August 2019 3- to 7-VIN, 24-A IOUT, 0.95-VOUT, Space-Grade Current Sharing Point-of- Load (POL) Reference Design Submit Documentation Feedback Copyright © 2018–2019, Texas Instruments Incorporated...

  • Page 12: Current Monitoring

    50 mV to 100 mV. Maximum input voltage for accurate measurements is (VS – 0.2) / Gain. 3- to 7-VIN, 24-A IOUT, 0.95-VOUT, Space-Grade Current Sharing Point-of- TIDUEN1A – December 2018 – Revised August 2019 Load (POL) Reference Design Submit Documentation Feedback Copyright © 2018–2019, Texas Instruments Incorporated...

  • Page 13: Operation Modes

    R222 R223 R224 R211 R216 R217 Inverter R218 R219 TIDUEN1A – December 2018 – Revised August 2019 3- to 7-VIN, 24-A IOUT, 0.95-VOUT, Space-Grade Current Sharing Point-of- Load (POL) Reference Design Submit Documentation Feedback Copyright © 2018–2019, Texas Instruments Incorporated...
  • Page 14 R125 R126 R127 J102 J105 Power Jumpers J107 J110 3- to 7-VIN, 24-A IOUT, 0.95-VOUT, Space-Grade Current Sharing Point-of- TIDUEN1A – December 2018 – Revised August 2019 Load (POL) Reference Design Submit Documentation Feedback Copyright © 2018–2019, Texas Instruments Incorporated...
  • Page 15 001 of the TIDA-070005. Variant 001 showcases the quadrature operation of the TIDA-070005 in which all four TPS50601A-SP are clocked 90° out of phase with each other via the digital phase splitter circuitry where the 2f input is generated by the drain and gate voltages of the N type FET on the output of the SE555 555 timer.
  • Page 16 002 of the TIDA-070005. Variant 002 showcases the quadrature operation of the TIDA-070005 in which all four TPS50601A-SP are clocked 90° out of phase with each other via an externally generated clock signal that is 2 times the frequency of the POL switching frequency.
  • Page 17 Figure 10. Variant 003 Figure 10 shows variant 003 of the TIDA-070005. Variant 0003 showcases the ability to have two sets of parallel POLs to generate two different power rails each having the capabilities of producing up to 12 A of current.
  • Page 18 Figure 11. Variant 004 Figure 11 shows variant 004 of the TIDA-070005. Variant 004 showcases the ability to generate one high current rail by operating POL 0 and 1 in parallel to generate 12 A and then operating POLs 2 and 3 independently to generate 2 individual rails each with 6-A capability.
  • Page 19 Figure 12. Variant 005 Figure 12 shows variant 005 of the TIDA-070005. Variant 005 showcases the ability to operate all 4 POLs independently from one another with having POLs 0 and 1 operate at 180° out of phase with one another as well as POLs 2 and 3 operating 180°...
  • Page 20 Figure 13. Variant 006 Figure 13 shows variant 006 of the TIDA-070005. Variant 006 showcases the ability to operate all 4 POLs independently from one another while allowing the user to select any combination of converters to operate in phase or 180° out of phase with the external clock and individual inverters. This is using the third clocking option.
  • Page 21 Note in current sharing mode only one TPS50601A-SP POL will have these passives populated. TIDUEN1A – December 2018 – Revised August 2019 3- to 7-VIN, 24-A IOUT, 0.95-VOUT, Space-Grade Current Sharing Point-of- Load (POL) Reference Design Submit Documentation Feedback Copyright © 2018–2019, Texas Instruments Incorporated...
  • Page 22 3- to 7-VIN, 24-A IOUT, 0.95-VOUT, Space-Grade Current Sharing Point-of- TIDUEN1A – December 2018 – Revised August 2019 Load (POL) Reference Design Submit Documentation Feedback Copyright © 2018–2019, Texas Instruments Incorporated...
  • Page 23 VSENSE input current are noticeable. TIDUEN1A – December 2018 – Revised August 2019 3- to 7-VIN, 24-A IOUT, 0.95-VOUT, Space-Grade Current Sharing Point-of- Load (POL) Reference Design Submit Documentation Feedback Copyright © 2018–2019, Texas Instruments Incorporated...
  • Page 24 10. Increase the electronic loads current consumption to design specifications, that do not exceed 24 A 3- to 7-VIN, 24-A IOUT, 0.95-VOUT, Space-Grade Current Sharing Point-of- TIDUEN1A – December 2018 – Revised August 2019 Load (POL) Reference Design Submit Documentation Feedback Copyright © 2018–2019, Texas Instruments Incorporated...
  • Page 25 Hardware, Software, Testing Requirements, and Test Results www.ti.com Testing and Results 3.3.1 Test Setup Pictures of the test setup used to evaluate the TIDA-070005 are shown in Figure Figure Figure 18 Figure Figure 16. Quadrature Clock Verification TIDUEN1A – December 2018 – Revised August 2019 3- to 7-VIN, 24-A IOUT, 0.95-VOUT, Space-Grade Current Sharing Point-of-...
  • Page 26 Figure 17. PVin and Vin Power Connections (Power Option 2) 3- to 7-VIN, 24-A IOUT, 0.95-VOUT, Space-Grade Current Sharing Point-of- TIDUEN1A – December 2018 – Revised August 2019 Load (POL) Reference Design Submit Documentation Feedback Copyright © 2018–2019, Texas Instruments Incorporated...
  • Page 27 Figure 18. Vin_LDO_6V Power Connections (Power Option 2) TIDUEN1A – December 2018 – Revised August 2019 3- to 7-VIN, 24-A IOUT, 0.95-VOUT, Space-Grade Current Sharing Point-of- Load (POL) Reference Design Submit Documentation Feedback Copyright © 2018–2019, Texas Instruments Incorporated...
  • Page 28 Figure 20. Current Sharing Results Out to 24 A in Quadrature Operation 3- to 7-VIN, 24-A IOUT, 0.95-VOUT, Space-Grade Current Sharing Point-of- TIDUEN1A – December 2018 – Revised August 2019 Load (POL) Reference Design Submit Documentation Feedback Copyright © 2018–2019, Texas Instruments Incorporated...
  • Page 29 To download the schematics, see the design files at TIDA-070005. Bill of Materials To download the bill of materials (BOM), see the design files at TIDA-070005. PCB Layout Recommendations The main concern with the mother board is to keep all TPS50601A-SP as close as possible so that the common output is close to each of them.

  • Page 30: Third-Party Products Disclaimer

    Related Documentation www.ti.com Trademarks E2E is a trademark of Texas Instruments. Altium Designer is a registered trademark of Altium LLC or its affiliated companies. All other trademarks are the property of their respective owners. Third-Party Products Disclaimer TI'S PUBLICATION OF INFORMATION REGARDING THIRD-PARTY PRODUCTS OR SERVICES DOES...

  • Page 31: Revision History

    Added Command and data handling; Satellite electrical power system (EPS); Optical imaging payload; Radar imaging ................. payload, and Communications payload applications TIDUEN1A – December 2018 – Revised August 2019 Revision History Submit Documentation Feedback Copyright © 2018–2019, Texas Instruments Incorporated...
  • Page 32 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2022, Texas Instruments Incorporated...

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