Texas Instruments TPS61195EVM-460

Overview

TPS61195EVM-460 from Texas Instruments is an evaluation module designed to demonstrate and validate the TPS61195 WLED backlight driver IC, which delivers up to eight independently regulated current outputs using a single-inductor boost architecture. It supports input voltages from 7 V to 21 V, delivers up to 46 V output, and enables PWM or SMBus-controlled dimming for notebook and monitor LCD backlight systems.

For engineers reviewing the TPS61195EVM-460 datasheet, TPS61195EVM-460 pinout, TPS61195EVM-460 application, or TPS61195EVM-460 equivalent, this EVM provides hands-on validation of LED current regulation accuracy (±2.5% typical), overvoltage protection (32–46 V range), switching frequency control (0.8–1.2 MHz), and dual-interface dimming (PWM/SMBus) in real-world backlight power designs.

Technical Context

The TPS61195EVM-460 implements the TPS61195 IC in a functional 2-layer PCB layout measuring 6.58 cm × 5.44 cm, with all active components placed within a 1.9 cm × 2.2 cm top-side area for easy probing and measurement. It integrates a 10 µH boost inductor (A915AY-100M), input/output filtering capacitors, and configurable jumpers (JP1–JP13) to select operating mode (SMBus, PWM, analog, or direct PWM).

Interface flexibility is achieved via J3 (10-pin USB-to-GPIO connector), J4 (EN control), J5 (PWM input), and J6 (14-pin WLED string interface), enabling both hardware-triggered and software-controlled evaluation. Mode selection is determined by SEL1/SEL2 voltage states per Table 2, supporting no-delay SMBus, no-delay PWM, direct PWM, and analog dimming configurations.

Key Specifications

Availability

TPS61195EVM-460 is available at Aetrix Electronics and suitable for notebook backlight development, LCD monitor power validation, and WLED driver IC characterization requiring stable component supply and repeatable test infrastructure.

Supply support for TPS61195EVM-460 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, delivering analog, embedded processing, and power management solutions for industrial, automotive, and computing applications.

The TPS61195EVM-460 belongs to TI's backlight evaluation platform family, engineered specifically to accelerate design-in of high-accuracy, multi-string WLED drivers for portable and desktop display systems.

FAQ

What is the primary function of the TPS61195EVM-460?

The TPS61195EVM-460 is an evaluation module built around the TPS61195 WLED driver IC. Its primary function is to demonstrate and validate the IC's capability to drive up to eight independent LED strings using a single-inductor boost converter, with precise current regulation and flexible dimming control via PWM or SMBus. The TPS61195EVM-460 enables rapid testing of backlight performance under real-world voltage, load, and interface conditions.

Which LED evaluation boards are compatible with the TPS61195EVM-460?

The TPS61195EVM-460 is explicitly designed to interface with the WLEDEVM-260 LED evaluation board via its 14-pin J6 connector. This pairing allows full validation of 10-WLED string configurations. While other LED boards may be connected externally through JP5–JP12 jumpers and test points, only the WLEDEVM-260 is referenced in the official user's guide as a validated companion board for the TPS61195EVM-460.

How does the TPS61195EVM-460 support both PWM and SMBus dimming?

The TPS61195EVM-460 supports dual dimming modes via jumper-configurable SEL1/SEL2 pins (JP1 and JP13). When SEL1 = VDDIO and SEL2 = GND, SMBus mode activates; when both are grounded, direct PWM mode engages. The TPS61195EVM-460 includes J5 for external PWM injection and J3 for USB-to-GPIO communication, enabling either hardware-triggered or software-controlled brightness adjustment without modifying firmware or hardware.

What are the critical safety limits for operating the TPS61195EVM-460?

The TPS61195EVM-460 must operate within strict voltage boundaries: input 4–24 V (recommended 7–21 V per spec table), output 32–46 V. Exceeding these ranges risks irreversible damage. Additionally, certain components-including the boost inductor and current-sense resistors-may exceed 85°C during normal operation. Users must observe thermal precautions, avoid touching hot components, and ensure adequate airflow during extended testing of the TPS61195EVM-460.

Can the TPS61195EVM-460 be used without the USB-to-GPIO adapter?

Yes - the TPS61195EVM-460 operates fully in hardware-only mode. JP2 (EN-VDDIO) and JP3 (PWM-VDDIO) allow direct enable and full-brightness activation without software. External logic signals applied to J4 (EN) and J5 (PWM) provide complete manual control. The USB-to-GPIO adapter and associated GUI software are optional enhancements for SMBus register-level configuration and real-time status monitoring of the TPS61195EVM-460.