Texas Instruments TPS650240EVM-331

Overview

TPS650240EVM-331 from Texas Instruments is an evaluation module designed to validate the power sequencing and voltage regulation performance of the TPS650240 PMIC and TPS79901 LDO in i.MX31 processor applications. It integrates three DC-DC converters (DCDC1: 2.7 V/1.0 A, DCDC2: 1.8 V/0.8 A, DCDC3: 1.3 V/0.8 A), two 1.8 V/200 mA LDOs, and a 1.2 V/30 mA VDD_ALIVE regulator on a 3.0" × 3.0" PCB with configurable jumpers and test points.

For engineers reviewing the TPS650240EVM-331 datasheet, TPS650240EVM-331 pinout, TPS650240EVM-331 application, or TPS650240EVM-331 equivalent, this EVM supports rapid validation of i.MX31 power-up sequencing, DC-DC efficiency under load, LDO noise sensitivity, and jumper-based voltage configuration - all critical for embedded Linux and multimedia SoC designs.

Technical Context

The TPS650240EVM-331 implements a fixed power-on sequence: DCDC3 enables first upon VIN application; then DCDC1, LDO1, and LDO2 activate simultaneously; finally DCDC2 and the TPS79901 LDO enable after DCDC1 stabilizes. This matches the i.MX31's strict boot-order requirements.

It features 19 dedicated connectors (J1–J19) for input supply, enable control, PWM/PFM mode selection, and all regulated outputs (VDCDC1–VDCDC3, VLDO1–VLDO2, VDD_ALIVE, PWRFAIL), plus shunt jumpers for default voltage selection (e.g., J4 sets DCDC2 to 1.8 V, J5 sets DCDC3 to 1.3 V).

Key Specifications

Availability

TPS650240EVM-331 is available at Aetrix Electronics and suitable for i.MX31-based industrial HMI, portable media players, and automotive infotainment prototypes requiring stable component supply, quick-turn evaluation, and production-representative power architecture validation.

Supply support for TPS650240EVM-331 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 headquartered in Dallas, Texas, specializing in analog, embedded processing, and power management technologies with over 50 years of innovation in industrial, automotive, and consumer electronics.

The TPS650240EVM-331 belongs to TI's Power Management Evaluation Modules product line, engineered specifically to accelerate hardware validation of multi-rail PMICs in NXP i.MX application processors - emphasizing sequence fidelity, thermal layout integrity, and jumper-driven configurability.

FAQ

What is the primary purpose of the TPS650240EVM-331?

The TPS650240EVM-331 is an evaluation module built to validate the TPS650240 power management IC and TPS79901 LDO in i.MX31 processor systems. It provides a fully assembled, tested PCB with jumpers, connectors, and layout optimized for power sequencing, voltage accuracy, and thermal performance - enabling engineers to verify boot behavior, load transient response, and regulator stability before committing to custom board design. The TPS650240EVM-331 eliminates the need for prototyping discrete power stages.

Which processor does the TPS650240EVM-331 target, and how is it aligned?

The TPS650240EVM-331 is explicitly designed for the NXP i.MX31 applications processor. Its power sequencing order - DCDC3 → (DCDC1 + LDO1 + LDO2) → (DCDC2 + TPS79901) - matches the i.MX31's documented boot requirements. Default output voltages (2.7 V for DCDC1, 1.8 V for DCDC2, 1.3 V for DCDC3, 1.8 V for LDO1/LDO2) align with i.MX31 core, memory, and I/O rail specifications. The TPS650240EVM-331 includes dedicated test points and enable jumpers to replicate production-level control signals.

Can the TPS650240EVM-331 be used with other processors beyond i.MX31?

The TPS650240EVM-331 can be adapted for other processors requiring similar multi-rail power with programmable sequencing, but its default configuration, jumper settings, and documentation are i.MX31-specific. Users must manually reconfigure jumpers (e.g., J3–J5), adjust feedback resistors, and verify timing compliance against their target SoC's power-up specification. The TPS650240EVM-331 does not include firmware or auto-detection; all adaptations require hardware-level validation. It is not pre-validated for i.MX27, i.MX51, or non-NXP devices.

What are the key connectors and their functions on the TPS650240EVM-331?

The TPS650240EVM-331 includes 19 labeled connectors: J1 supplies main input (VIN ≤ 5.5 V); J2 powers the LDO section; J3–J5 set DCDC1–DCDC3 default voltages; J6 outputs the TPS79901 LDO; J7–J10 control LDO/DCDC enables; J11 selects PWM/PFM mode; J12–J16 provide access to all regulated outputs; J17–J19 manage VDD_ALIVE and PWRFAIL signals. Each connector uses standard 100-mil headers (PTC36SAAN) for easy probing and integration with lab equipment. The TPS650240EVM-331 schematic documents exact pin assignments and signal names.

Does the TPS650240EVM-331 comply with regulatory standards like CE or FCC?

No - the TPS650240EVM-331 is explicitly designated for engineering development, demonstration, and evaluation only, and is not certified for EMC, RoHS, WEEE, CE, FCC, or UL compliance. As stated in TI's User's Guide, it lacks shielding, filtering, and safety isolation required for end-product use. Radiated emissions testing has not been performed. The TPS650240EVM-331 must not be deployed in commercial or consumer-facing systems without full redesign and independent certification. TI disclaims liability for regulatory non-compliance arising from misuse.