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Texas Instruments LP87644Q1EVM
- Part No.:
- LP87644Q1EVM
- Manufacturer:
- Texas Instruments
- Package:
- Datasheet:
-
LP87644Q1EVM.pdf
- Description:
- EVAL BOARD FOR LP8764Q1
- Quantity:
- Payment:
- Shipping:
Inventory:3,655
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Product details
Overview
LP87644Q1EVM from Texas Instruments is an evaluation module designed to demonstrate and develop with the LP876441E4RQKRQ1 automotive-grade quad-buck PMIC, supporting independent 4-output configuration at 4.4 MHz switching frequency, up to 5 A per rail, and controller-target stacking for multi-PMIC systems.
For engineers reviewing the LP87644Q1EVM datasheet, LP87644Q1EVM pinout, LP87644Q1EVM application, or LP87644Q1EVM equivalent, this EVM enables rapid validation of power sequencing, SPMI/I²C/SPI interface integration, phase configuration (1+1+1+1), GPIO-controlled BUCK4 enable, and thermal-safe operation under automotive load conditions.
Technical Context
The LP87644Q1EVM implements a modular, stackable architecture where one board operates as controller and others as targets via J29 headers, sharing VCCA/GND across J27–J28 and enabling synchronized power-up sequences using nPWRON_S signaling. It supports configurable communication interfaces - default I²C, switchable to SPI via J20/J25 jumpers and S3 DIP switches for chip select in stacked mode.
Hardware-level flexibility includes jumper-selectable VIO (1.8 V or 3.3 V via J32), USB-powered operation (≤2 W), GPIO2-triggered BUCK4 control after GPIO4 assertion, and four dedicated terminal blocks (J10–J13) for direct 5-A buck output access with integrated feedback sense points (FB_B1–FB_B4).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Form Factor | Evaluation module (EVM) for LP876441E4RQKRQ1 PMIC; not a semiconductor component. |
| Input Voltage Range | VCCA input: 2.8 V to 5.5 V via J9 terminal block; supports USB 5 V (≤2 W) or external supply. |
| Buck Output Configuration | Independent 4-output mode (BUCK1–BUCK4); each rated for 5 A continuous; configured via R1/R3/R4/R7 and J3–J8 jumpers. |
| Switching Frequency | 4.4 MHz nominal - fixed for LP87644Q1EVM's NVM-configured 4-output mode per Table 1-1. |
| Interface Options | I²C (default), SPI (jumper-enabled), or SPMI (controller-target topology); level-shifted via SN74GTL2003 for 1.8 V/3.3 V VIO compatibility. |
| Stacking Capability | Supports 1 controller + up to 5 target EVMs via J27/J28/J29 headers; automatic VCCA/GND distribution and synchronized enable sequencing. |
Availability
LP87644Q1EVM is available at Aetrix Electronics and suitable for automotive ADAS domain controllers, infotainment head units, and zonal gateway development requiring stable component supply, fast prototyping turnaround, and scalable multi-PMIC validation.
Supply support for LP87644Q1EVM includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and power management technologies, with deep expertise in automotive-grade reliability and functional safety.
The LP8764x-Q1 product line delivers scalable, configurable PMIC solutions for automotive applications including ADAS, infotainment, and body electronics, emphasizing system-level flexibility through controller-target topology and GUI-driven configuration.
FAQ
What is the LP87644Q1EVM used for?
The LP87644Q1EVM is an evaluation module for the LP876441E4RQKRQ1 quad-buck PMIC, enabling hardware validation, GUI-based configuration, and system-level testing of independent 4-output power rails, controller-target stacking, and interface protocols (I²C/SPI/SPMI). It is not a standalone IC but a development platform for automotive power architecture design.
Does the LP87644Q1EVM support USB-only power operation?
Yes, the LP87644Q1EVM can be powered solely via its USB-C connection (≤2 W total draw), enabling quick evaluation without external supplies. When using USB power, jumpers on J25 must connect EN_5V0 to 3.3V and VCCA to 5.0V; however, heavy-load testing requires external VCCA input via J9 due to USB current limits.
How does the LP87644Q1EVM implement controller-target stacking?
The LP87644Q1EVM uses J22 jumpers to define controller/target roles, J27/J28 for shared VCCA/GND, and J29 for SPMI communication. In a stack, only the controller EVM connects to USB; nPWRON_S signaling ensures target EVMs power up only after the controller asserts enable, maintaining strict sequencing integrity across multiple PMICs.
Can the LP87644Q1EVM configure BUCK4 independently using GPIO2?
Yes - per the User's Guide, in LP87644Q1EVM, GPIO2 controls BUCK4 after GPIO4 has been set high. This allows staged enable sequencing: GPIO4 first powers all rails, then GPIO2 selectively activates BUCK4, supporting use cases like late-stage subsystem wake-up or dynamic load partitioning in automotive ECUs.
What communication interfaces does the LP87644Q1EVM support out of the box?
The LP87644Q1EVM defaults to I²C communication between host PC and PMIC via the onboard MSP432E401Y MCU. SPI mode is enabled by closing SPI_EN on J20 and configuring SCL2/CS and GPIO2 jumpers on J25 (controller only), while S3 DIP switches assign chip select for targets in stacked configurations.
LP87644Q1EVM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Main Purpose:
- DC/DC, Step Down
- Outputs and Type:
- 4 Non-Isolated Outputs
- Voltage - Output:
- -
- Current - Output:
- -
- Voltage - Input:
- 5A, 5A, 5A, 5A
- Regulator Topology:
- 3V ~ 5.5V
- Frequency - Switching:
- Buck
- Contents:
- 4.4MHz
- Utilized IC / Part:
- Board(s), Cable(s)
- Power - Output:
- LP8764-Q1
LP87644Q1EVM FAQ
1.How can I place an order for LP87644Q1EVM through Aetrix?
Please submit a Request for Quotation (RFQ) for LP87644Q1EVM on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LP87644Q1EVM reliable?
The price and inventory of LP87644Q1EVM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP87644Q1EVM is usually 5 days.
3.What payment methods are accepted for LP87644Q1EVM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP87644Q1EVM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP87644Q1EVM?
LP87644Q1EVM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP87644Q1EVM order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LP87644Q1EVM?
For technical support, including LP87644Q1EVM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP87644Q1EVM requirements.
6.How does Aetrix verify that LP87644Q1EVM is sourced from the original manufacturer or authorized distributors?
All LP87644Q1EVM products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LP87644Q1EVM meets industry standards.
7.What is the process for return or replacement of LP87644Q1EVM?
All LP87644Q1EVM units undergo pre-shipment inspection (PSI). If there is an issue with LP87644Q1EVM, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LP87644Q1EVM part is unused and in its original packaging.
Return procedure for LP87644Q1EVM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP87644Q1EVM Tags
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