LM5137F-Q1 TI | Alldatasheet
Document overview
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Technical content
LM5137F-Q1 Automotive, 4V to 80V, 100% Duty Cycle Capable, Dual-Channel Synchronous Buck Controller Family for Functional Safety Applications
1 Features
- AEC-Q100 qualified for automotive applications: – Device temperature grade 1: –40°C to 125°C ambient operating temperature
- Functional Safety-Compliant targeted – Developed for functional safety applications
- Three orderable part numbers for Capable, ASIL B, and ASIL D options – Documentation available to aid ISO 26262 system design up to ASIL D will be available upon production release – Systematic capability up to ASIL D targeted – Hardware integrity up to ASIL D targeted
- Versatile dual synchronous buck DC/DC controller – 1% accurate, fixed 3.3V, 5V, 12V, or adjustable outputs from 0.8V to 60V – Current monitor output for each channel – Charge-pump gate drivers for 100% duty cycle – No-load sleep current of 12.7µA (typical) – Internal hiccup-mode overcurrent protection
- Two interleaved synchronous buck channels – Dual channel or single-output multiphase – Stackable up to four phases
- Designed for ultra-low EMI requirements – Dual Random Spread Spectrum (DRSS) – Switching frequency from 100kHz to 2.5MHz
- VQFN-36 package with wettable flanks
- Create a custom design using the LM5137F-Q1 with WEBENCH® Power Designer
2 Applications
- Automotive electronic systems
- Infotainment systems, instrument clusters, ADAS
- High-voltage battery-operated systems
3 Description
The LM5137F-Q1 is an 80V dual-channel buck controller offered frrom a family with three options for functional safety: Capable, ASIL B, or ASIL D . The device uses an interleaved, stackable, peak current- mode architecture for easy loop compensation, fast transient response, excellent load and line regulation, and accurate current sharing with paralleled phases for high output current. A high-side switch minimum on-time of 15ns facilitates large step-down ratios, enabling the direct conversion from 12V, 24V or 48V automotive inputs to low-voltage rails for reduced system design cost and complexity. The LM5137F-Q1 continues operating during input voltage dips as low as 4V, at 100% duty cycle if needed.
Package Information
PART NUMBER PACKAGE(1) PACKAGE SIZE(2) LM5137F-Q1 RHA (VQFN, 36) 6.0mm × 6.0mm (1) For more information, see Section 7. (2) The package size (length × width) is a nominal value and includes pins, where applicable. RTRSS PFM/SYNC AGND COMP2 VOUT2 ISNS2+ LO2 SW2 HO2 CBOOT2 VIN COMP1 BIAS1/VOUT1 ISNS1+ LO1 SW1 HO1 CBOOT1 VCC FB1 VSNS1 VSNS2 VDDA FB2 EN2 SYNCOUT EN1 PG1 CFNG PG2 nFAULT1 nFAULT2 IMON2IMON1 LO1 COUT2 CIN1 CVDDA LO2 COUT1 RS2RS1 RSS RRT RCNFG CVCC CBOOT1 CBOOT2 LM5137F-Q1 VDDA CIN2 RFB1 RVSNS1 CHF2 RCOMP2 CCOMP2 CHF1 RCOMP1 CCOMP1 RVSNS2 VDDA RFB2 VIN = 4V...80V VOUT1 = 5V IOUT1 = 15A * VOUT1 tracks VIN if VIN < 5V VOUT2 = 3.3V IOUT2 = 15A LM5137F-Q1 Dual-Output Buck Switching Regulator – Simplified Schematic ADVANCE INFORMATION LM5137F-Q1 SNVSCV0 – SEPTEMBER 2024 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. ADVANCE INFORMATION for preproduction products; subject to change without notice.
Several features are included to simplify compliance with CISPR 25 and automotive EMI requirements. Adaptively timed, high-current MOSFET gate drivers minimize body diode conduction during switching transitions, reducing switching losses and improving thermal and EMI performance at high input voltage and high switching frequency. To reduce input capacitor ripple current and EMI filter size, 180° interleaved operation is provided for two outputs. A 90° out-of-phase clock output works well for cascaded, multi-channel or multiphase power stages. Resistor-adjustable switching frequency as high as 2.2MHz can be synchronized to an external clock source up to 2.5MHz to eliminate beat frequencies in noise-sensitive applications. The 12.7 μA no-load quiescent current with the output voltage in regulation extends operating run-time in battery-powered automotive systems. Additional features of the LM5137F-Q1 include 150°C maximum junction temperature operation, user-selectable PFM mode for lower current consumption at light-load conditions, configurable soft-start functions, open-drain PG and FAULT flags for fault reporting and output monitoring, independent enable inputs, monotonic start-up into prebiased loads, integrated VCC bias supply regulator powered from VIN or BIAS1/VOUT1, hiccup-mode overload protection, and thermal shutdown protection with automatic recovery. Current is sensed using the inductor DCR for highest efficiency or an optional shunt resistor for high accuracy. The LM5137F-Q1 controller is qualified to AEC-Q100 grade 1 for automotive applications and comes in a 6mm × 6mm thermally-enhanced, 36-pin VQFN package with additional pin clearance for increased reliability and wettable flank pins to facilitate optical inspection during manufacturing. The wide input voltage range, low quiescent current consumption, high-temperature operation, cycle-by-cycle current limit, low EMI signature, and small design size provide an excellent point-of-load regulator solution for functional safety (FuSa) applications requiring enhanced robustness and durability. LM5137F-Q1 SNVSCV0 – SEPTEMBER 2024 www.ti.com
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7 Mechanical, Packaging, and Orderable Information....6
4 Device Comparison Table
Table 4-1. Orderable Part Numbers GENERIC PART NUMBER ORDERABLE PART NUMBER FUNCTIONAL SAFETY CLASSIFICATION(1) PRODUCT DATA SHEET LM5137-Q1 LM5137QRHARQ1 Functional safety-capable Available here LM5137F-Q1 LM5137FBQRHARQ1 ASIL B functional safety-compliant Request the full data sheet here LM5137FDQRHARQ1 ASIL D functional safety-compliant (1) Refer to the functional safety homepage to understand the different functional safety classifications (in terms of the development process, analysis report, and diagnostics description). www.ti.com LM5137F-Q1 SNVSCV0 – SEPTEMBER 2024 Copyright © 2024 Texas Instruments Incorporated Submit Document Feedback 3 Product Folder Links: LM5137F-Q1 ADVANCE INFORMATION
5 Device and Documentation Support
5.1 Device Support
5.1.1 Third-Party Products Disclaimer
TI'S PUBLICATION OF INFORMATION REGARDING THIRD-PARTY PRODUCTS OR SERVICES DOES NOT CONSTITUTE AN ENDORSEMENT REGARDING THE SUITABILITY OF SUCH PRODUCTS OR SERVICES OR A WARRANTY, REPRESENTATION OR ENDORSEMENT OF SUCH PRODUCTS OR SERVICES, EITHER ALONE OR IN COMBINATION WITH ANY TI PRODUCT OR SERVICE.
5.1.2 Development Support
With an input operating voltage as low as 3.5V and up to 100V as specified in Table 5-1, the LM(2)514x -Q1 family of automotive synchronous buck controllers from TI provides flexibility, scalability and optimized design size for a variety of applications. With the LM5137F-Q1 and LM25137F-Q1 now available to aid in functional safety system design up to ASIL D, the controller family enables DC/DC designs with high density, low EMI, and increased system reliability. All controllers are rated for a maximum operating junction temperature of 150°C and have AEC-Q100 grade 1 qualification. Table 5-1. Automotive Synchronous Buck DC/DC Controller Family DC/DC CONTROLLER SINGLE or DUAL VIN RANGE CONTROL METHOD GATE DRIVE VOLTAGE SYNC OUTPUT PROGRAMMABLE SPREAD SPECTRUM LM5137-Q1 Dual 4V to 80V Peak current mode 5V 90° phase shift DRSS (5% or 10%) LM25137-Q1 Dual 4V to 42V Peak current mode 5V 90° phase shift DRSS (5% or 10%) LM5141-Q1 Single 3.8V to 65V Peak current mode 5V N/A Triangular LM25141-Q1 Single 3.8V to 42V Peak current mode 5V N/A Triangular LM5143A-Q1 Dual 3.5V to 65V Peak current mode 5V 90° phase shift Triangular LM25143-Q1 Dual 3.5V to 42V Peak current mode 5V 90° phase shift Triangular LM5145-Q1 Single 5.5V to 75V Voltage mode 7.5V 180° phase shift N/A LM5146-Q1 Single 5.5V to 100V Voltage mode 7.5V 180° phase shift N/A LM5148-Q1 Single 3.5V to 80V Peak current mode 5V 180° phase shift DRSS LM25148-Q1 Single 3.5V to 42V Peak current mode 5V 180° phase shift DRSS LM5149-Q1 Single 3.5V to 80V Peak current mode 5V 180° phase shift DRSS LM25149-Q1 Single 3.5V to 42V Peak current mode 5V 180° phase shift DRSS For development support, see the following:
- LM(2)5137-Q1 DC/DC controller Quickstart Calculator and PSPICE simulation models
- LM25137-Q1 EVM PCB layout files
- For TI's WEBENCH design environments, visit the WEBENCH® Design Center
- For TI's reference design library, visit TI Designs
- TI Designs: – Automotive Wide VIN Front-end Reference Design for Digital Cockpit Processing Units
5.1.2.1 Custom Design With WEBENCH® Tools
Click here to create a custom design using the LM5137F-Q1 device with the WEBENCH® Power Designer. 1. Start by entering the input voltage (VIN), output voltage (VOUT), and output current (IOUT) requirements. 2. Optimize the design for key parameters such as efficiency, footprint, and cost using the optimizer dial. 3. Compare the generated design with other possible solutions from Texas Instruments. The WEBENCH Power Designer gives a customized schematic along with a list of materials with real-time pricing and component availability. LM5137F-Q1 SNVSCV0 – SEPTEMBER 2024 www.ti.com
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In most cases, these actions are available:
- Run electrical simulations to see important waveforms and circuit performance
- Run thermal simulations to understand board thermal performance
- Export customized schematic and layout into popular CAD formats
- Print PDF reports for the design, and share the design with colleagues Get more information about WEBENCH tools at www.ti.com/WEBENCH.
5.2 Documentation Support
5.2.1 Related Documentation
For related documentation, see the following:
- User's guides: – Texas Instruments, LM25137-Q1 Synchronous Buck Controller EVM – Texas Instruments, LM5143-Q1 Synchronous Buck Controller EVM – Texas Instruments, LM5141-Q1 Synchronous Buck Controller EVM – Texas Instruments, LM5146-Q1 EVM User's Guide – Texas Instruments, LM5145EVM-HD-20A High Density Evaluation Module
- Application reports: – Texas Instruments, LM5143-Q1 4-phase Buck Regulator Design for Automotive ADAS Applications – Texas Instruments, AN-2162 Simple Success With Conducted EMI From DCDC Converters – Texas Instruments, Maintaining Output Voltage Regulation During Automotive Cold-Crank with LM5140- Q1 Dual Synchronous Buck Controller
- Analog design journal: – Texas Instruments, Reduce Buck Converter EMI and Voltage Stress by Minimizing Inductive Parasitics
- White papers: – Texas Instruments, An Overview of Conducted EMI Specifications for Power Supplies – Texas Instruments, An Overview of Radiated EMI Specifications for Power Supplies – Texas Instruments, Valuing Wide VIN, Low EMI Synchronous Buck Circuits for Cost-driven, Demanding
Applications
5.2.1.1 PCB Layout Resources
- Application reports: – Texas Instruments, AN-1149 Layout Guidelines for Switching Power Supplies – Texas Instruments, Low Radiated EMI Layout Made SIMPLE with LM4360x and LM4600x
- Application brief: – Texas Instruments, Improve High-current DC/DC Regulator Performance for Free with Optimized Power Stage Layout
- Seminar: – Texas Instruments, Constructing Your Power Supply – Layout Considerations
5.2.1.2 Thermal Design Resources
- Application reports: – Texas Instruments, AN-2020 Thermal Design by Insight, Not Hindsight – Texas Instruments, AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Pad Packages – Texas Instruments, Semiconductor and IC Package Thermal Metrics – Texas Instruments, Thermal Design Made Simple with LM43603 and LM43602 – Texas Instruments, PowerPAD™Thermally Enhanced Package – Texas Instruments, PowerPAD Made Easy – Texas Instruments, Using New Thermal Metrics www.ti.com LM5137F-Q1 SNVSCV0 – SEPTEMBER 2024 Copyright © 2024 Texas Instruments Incorporated Submit Document Feedback 5 Product Folder Links: LM5137F-Q1 ADVANCE INFORMATION
5.3 Receiving Notification of Documentation Updates
To receive notification of documentation updates, navigate to the device product folder on ti.com. Click on Notifications to register and receive a weekly digest of any product information that has changed. For change details, review the revision history included in any revised document.
5.4 Support Resources
TI E2E™ support forums are an engineer's go-to source for fast, verified answers and design help — straight from the experts. Search existing answers or ask your own question to get the quick design help you need. Linked content is provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use.
5.5 Trademarks
PowerPAD™ and TI E2E™ are trademarks of Texas Instruments. WEBENCH® is a registered trademark of Texas Instruments. All trademarks are the property of their respective owners.
5.6 Electrostatic Discharge Caution
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
5.7 Glossary
TI Glossary This glossary lists and explains terms, acronyms, and definitions.
6 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version. DATE REVISION NOTES September 2024 * Initial Release
7 Mechanical, Packaging, and Orderable Information
The following pages show mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. LM5137F-Q1 SNVSCV0 – SEPTEMBER 2024 www.ti.com
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7.1 Tape and Reel Information
Reel Width (W1) REEL DIMENSIONS W Dimension designed to accommodate the component length Dimension designed to accommodate the component thickness Overall width of the carrier tape Pitch between successive cavity centers Dimension designed to accommodate the component width TAPE DIMENSIONS B0 W A0Cavity QUADRANT ASSIGNMENTS FOR PIN 1 ORIENTATION IN TAPE Pocket Quadrants Sprocket Holes Q1 Q1Q2 Q2 Q3 Q3Q4 Q4 Reel Diameter User Direction of Feed Device Package Type Package Drawing Pins SPQ Reel Diameter (mm) Reel Width W1 (mm) (mm) (mm) (mm) (mm) W (mm) Pin1 Quadrant www.ti.com LM5137F-Q1 SNVSCV0 – SEPTEMBER 2024 Copyright © 2024 Texas Instruments Incorporated Submit Document Feedback 7 Product Folder Links: LM5137F-Q1 ADVANCE INFORMATION
TAPE AND REEL BOX DIMENSIONS Width (mm) W L H Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) P5137FDQRHARQ1 VQFN RHA 36 2500 367.0 367.0 35.0 LM5137F-Q1 SNVSCV0 – SEPTEMBER 2024 www.ti.com
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www.ti.com PACKAGE OUTLINE6.15.9 6.15.9 1.00.80.050.00 2X 4.5 28X 0.5 2X 4.5 36X 0.50.33.30.1
0.1 MIN
2X 1 32X 0.30.2 4X 0.320.22 2X 1 (0.2) TYP (0.13) (0.16) TYP 4X (0.17) VQFN - 1 mm max heightRHA0036DPLASTIC QUAD FLATPACK - NO LEAD 4230454/A 02/2024 0.08C PINS 3, 24, 29 & 34 PIN 1 INDEX AREA SEATING PLANE PIN 1 ID PKGEXPOSEDTHERMAL PAD PKG 910 1718 262736 0.1CAB0.05C 0.1CAB0.05CPINS 3, 24, 29 & 34 SCALE 2.000 A-A 30.000 SECTION A-ATYPICAL AB C www.ti.com LM5137F-Q1 SNVSCV0 – SEPTEMBER 2024 Copyright © 2024 Texas Instruments Incorporated Submit Document Feedback 9 Product Folder Links: LM5137F-Q1 ADVANCE INFORMATION
www.ti.com EXAMPLE BOARD LAYOUT (R0.05) TYP 0.07 MAXALL AROUND0.07 MINALL AROUND 2X (1)28X (0.5) (5.8) (5.8) (3.3) (0.2) TYPVIA (0.575)(0.825) (0.575)(0.825) 4X (0.27)PINS 3, 24, 29 & 34 2X (1) VQFN - 1 mm max heightRHA0036DPLASTIC QUAD FLATPACK - NO LEAD SYMM PKG LAND PATTERN EXAMPLEEXPOSED METAL SHOWNSCALE: 15X SEE SOLDER MASKDETAIL1 910 1718 262736 METAL EDGESOLDER MASKOPENINGEXPOSED METAL METAL UNDERSOLDER MASKSOLDER MASKOPENINGEXPOSEDMETALNON SOLDER MASKDEFINED(PREFERRED)SOLDER MASK DEFINEDSOLDER MASK DETAILS LM5137F-Q1 SNVSCV0 – SEPTEMBER 2024 www.ti.com
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www.ti.com EXAMPLE STENCIL DESIGN 2X (1)28X (0.5) (5.8) (5.8) 9X (0.95) (R0.05) TYP (1.15) 2X (1) VQFN - 1 mm max heightRHA0036DPLASTIC QUAD FLATPACK - NO LEAD 4230454/A 02/2024NOTES: (continued) 6. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate design recommendations. SOLDER PASTE EXAMPLEBASED ON 0.125 MM THICK STENCILSCALE: 15X EXPOSED PAD 3775% PRINTED SOLDER COVERAGE BY AREA UNDER PACKAGE SYMM PKG 910 1718 262736 www.ti.com LM5137F-Q1 SNVSCV0 – SEPTEMBER 2024 Copyright © 2024 Texas Instruments Incorporated Submit Document Feedback 11 Product Folder Links: LM5137F-Q1 ADVANCE INFORMATION
www.ti.com 25-Sep-2024 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Qty Eco Plan (2) Lead finish/ Ball material (6) MSL Peak Temp (3) Op Temp (°C) Device Marking (4/5) Samples P5137FDQRHARQ1 ACTIVE VQFN RHA 36 2500 TBD Call TI Call TI -40 to 150 Samples (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based flame retardants must also meet the <=1000ppm threshold requirement. (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 1
www.ti.com GENERIC PACKAGE VIEW This image is a representation of the package family, actual package may vary. Refer to the product data sheet for package details. VQFN - 1 mm max heightRHA 36 PLASTIC QUAD FLATPACK - NO LEAD6 x 6, 0.5 mm pitch 4228438/A
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