Texas Instruments TPS65165EVM-233

Overview

TPS65165EVM-233 from Texas Instruments is an evaluation module designed to demonstrate and validate the TPS65165 LCD bias power supply IC in TV and monitor TFT-LCD panel applications. It accepts 4.5–5.5 V input, delivers regulated Vs (15 V/1 A), VGH (23.8 V/50 mA), and VGL (–5 V/50 mA), and integrates three opamps for gate driver voltage conditioning.

For engineers reviewing the TPS65165EVM-233 datasheet, TPS65165EVM-233 setup, TPS65165EVM-233 test results, or TPS65165EVM-233 jumper configuration, this EVM provides a production-representative platform to evaluate startup timing, load regulation, soft-start customization, and opamp-based voltage shaping for large-format display bias rails.

Technical Context

The TPS65165EVM-233 implements the full reference design for the TPS65165 IC, featuring a non-synchronous boost converter (Vs), a negative charge-pump controller (VGL) with external Schottky diodes, and a fully integrated positive charge pump (VGH). It supports gate-voltage shaping via pulsed CTRL pin control and configurable soft-start delays using C15 (ADLY) and C14 (GDLY).

Board-level features include 603+ footprint components for user customization, dedicated test points (J1–J13) for all critical rails and grounds, and default jumper settings (JP1–JP9) that ensure operation within specification limits per Table 1. The EVM uses ceramic capacitors exclusively for switching nodes and charge-pump flying/output paths to maintain stability.

Key Specifications

Availability

TPS65165EVM-233 is available at Aetrix Electronics and suitable for TFT-LCD panel development, display power architecture validation, and gate-driver voltage-shaping prototyping requiring stable component supply and documented reference performance.

Supply support for TPS65165EVM-233 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 and embedded processing technologies, with leadership in power management, signal chain, and interface solutions.

The TPS65165EVM-233 belongs to TI's LCD bias power supply evaluation platform family, engineered specifically to accelerate design-in of multi-rail TFT-LCD panel power systems for consumer TVs and monitors.

FAQ

What is the primary function of the TPS65165EVM-233?

The TPS65165EVM-233 is an evaluation module that demonstrates the TPS65165 IC's capability to generate three critical bias voltages-Vs (15 V), VGH (23.8 V), and VGL (–5 V)-for TFT-LCD panel gate drivers. It includes opamps for voltage scaling and gate-shaping, and supports configurable soft-start and high-voltage stress testing via jumpers. The TPS65165EVM-233 enables rapid validation of power sequencing, load regulation, and layout practices before final system integration.

Can the TPS65165EVM-233 operate outside the 4.5–5.5 V input range?

No-the TPS65165EVM-233 is validated only for 4.5–5.5 V input per its User's Guide (SLVU203). Operation above 5.5 V may cause irreversible damage; operation below 4.5 V reduces maximum output current capability and risks regulation loss. While the underlying TPS65165 IC supports 2.5–6 V, the EVM's passive component selection (e.g., L1, D1, capacitor ratings) is optimized for the 5 V nominal range, making out-of-spec input unsafe and unsupported.

How are the Vs, VGH, and VGL outputs controlled on the TPS65165EVM-233?

Output control is managed through dedicated jumpers and pins: JP1 (EN) enables/disables all rails; JP2 (HVS) activates high-voltage stress mode (Vs up to 18 V, VGH fixed at 30 V); JP3 (CTRL) toggles internal MOSFETs to route POUT to either VGH or DRN for gate-voltage shaping. Soft-start timing for Vs/VGL and VGH is set independently via C15 (ADLY) and C14 (GDLY), respectively. All configurations are verified in the TPS65165EVM-233 User's Guide.

What role do the three opamps play on the TPS65165EVM-233?

The three opamps on the TPS65165EVM-233 provide flexible signal conditioning for display bias rails: Opamp 1 (POS1/NEG1/OUT1) and Opamp 2 (POS2/NEG2/OUT2) support custom gate-voltage shaping circuits; Opamp 3 (POS3/OUT3) generates a precise half-Vs reference (7.5 V) used for level-shifting or feedback. Their non-inverting and inverting inputs are accessible via jumpers JP5–JP9, enabling reconfiguration or disabling when unused-ensuring design flexibility without hardware modification.

Are there recommended test conditions for evaluating the TPS65165EVM-233?

Yes-the TPS65165EVM-233 requires a ≥5 A, 5 V ±5% power supply connected to J4 (VIN) and J3 (GND); heavy-gauge twisted-pair wiring is mandatory to avoid input voltage drop. All jumpers JP2–JP9 must be in default positions before enabling EN (JP1). Outputs J6 (Vs), J2 (VGL), and J8 (VGH) are monitored with high-impedance probes; only resistive loads are permitted on VGL and VGH, while Vs supports electronic loads up to 1 A. Startup waveforms and regulation behavior are documented in Figure 1 and Table 1 of SLVU203.