STMicroelectronics STEVAL-CCA043V1

Overview

STEVAL-CCA043V1 from STMicroelectronics is a 25 W mono BTL Class-D audio amplifier demonstration board based on the TDA7491MV IC, designed for evaluation of high-efficiency audio power stages in consumer and professional audio systems. It delivers 25 W into 6 Ω at 16 V with 10% THD, operates from a single 5–18 V supply, achieves 90% efficiency, supports four fixed gain settings (20/26/30/32 dB), and includes differential input, standby/mute controls, and thermal/short-circuit protection.

For engineers reviewing the STEVAL-CCA043V1 datasheet, STEVAL-CCA043V1 pinout, STEVAL-CCA043V1 application, or STEVAL-CCA043V1 equivalent, this board enables rapid validation of TDA7491MV's BTL output stage, gain configuration, synchronization capability, and thermal performance without heatsink requirements in compact audio designs.

Technical Context

The board implements the TDA7491MV in PSSO36 (slug-down) package, leveraging its integrated MOSFET half-bridge outputs and modulation architecture to achieve high-efficiency Class-D operation. Its externally synchronizable clock input allows precise timing alignment in multi-amplifier systems, while differential analog inputs suppress common-mode noise in noisy environments.

Jumpers configure input topology (single-ended or differential) and fixed gain selection; microswitches independently control standby and mute states. Protection circuitry responds to overtemperature and output short-circuit events by disabling the output stage and asserting fault signaling.

Key Specifications

Availability

STEVAL-CCA043V1 is available at Aetrix Electronics and suitable for active speaker development, portable PA system prototyping, and automotive infotainment audio evaluation requiring stable component supply and documented reference design support.

Supply support for STEVAL-CCA043V1 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in microcontrollers, power management, analog, MEMS, and audio ICs for industrial, automotive, and consumer applications.

The STEVAL-CCA043V1 belongs to ST's Audio Demonstration Board product line, developed to accelerate adoption of its Class-D amplifier portfolio by providing fully tested, layout-verified hardware with configurable features for real-world audio system validation.

FAQ

What is the maximum continuous output power achievable with STEVAL-CCA043V1 under standard test conditions?

The board delivers 25 W continuous output into a 6 Ω load at 16 V supply, 1 kHz sine wave, and 10% THD - measured per IEC 60268-3. Output power scales with supply voltage and load impedance; at 18 V/8 Ω, it delivers 20 W under identical THD conditions.

Does STEVAL-CCA043V1 require an external heatsink for full-power operation?

No. The TDA7491MV is mounted in a PSSO36 package with exposed thermal slug, and the board's copper pour and thermal vias enable passive heat dissipation. At 25 W output, junction temperature remains within specification without heatsink under free-air convection at 25°C ambient.

How is the input configuration controlled on this demonstration board?

Input mode (differential or single-ended) is selected via JP1 and JP2 jumpers. Differential mode uses both IN+ and IN− terminals for noise rejection; single-ended mode connects signal to IN+ and grounds IN−. Gain is set separately using JP3–JP6 for 20/26/30/32 dB options.

Can STEVAL-CCA043V1 be synchronized with other Class-D amplifiers in a multi-channel system?

Yes. The board exposes the TDA7491MV's SYNC pin (accessible at TP5), allowing external clock injection from 200 kHz to 1.2 MHz. This enables precise PWM phase alignment across multiple boards to reduce inter-channel beat frequencies and EMI in stereo or multi-zone audio systems.