STMicroelectronics STA515WJ13TR

Overview

STA515WJ13TR from STMicroelectronics is a monolithic quad half-bridge power stage in Multipower BCD technology, designed as the output stage for stereo all-digital high-efficiency amplifiers. It delivers 10 W × 4 channels into 4 Ω (10% THD, VCC = 18 V, single-ended), or 20 W + 20 W into 8 Ω (BTL), or 40 W into 8 Ω (parallel BTL, VCC = 26 V). Its 200 mΩ RdsON complementary DMOS output stage, CMOS-compatible logic inputs, and thermal/short-circuit/undervoltage protection support robust audio power delivery in compact consumer and professional audio systems.

For engineers reviewing the STA515WJ13TR datasheet, STA515WJ13TR pinout, STA515WJ13TR application, or STA515WJ13TR equivalent, key selection considerations include its dual-bridge or parallel-BTL reconfigurability via CONFIG pin, open-drain thermal warning (THWARN) and fault (FAULT) outputs, 36-pin PowerSSO-EPD package with exposed pad down, and compatibility with DDX and binary PWM input formats for digital audio amplification.

Technical Context

The STA515WJ13TR integrates four independent half-bridge stages-each with matched P/N-channel DMOS outputs (RdsON typ. 200 mΩ, matching ≥95%)-and supports three operational modes: quad single-ended, dual full-bridge, or parallel-BTL (via CONFIG = VDD). Its logic interface references VL (2.7–5.0 V), enabling direct interfacing with 3.3 V DDX controllers like the STA308.

Protection architecture includes thermal shutdown at 150 °C (with 25 °C hysteresis), thermal warning at 130 °C, undervoltage lockout at 7 V, and overcurrent limiting (3–6 A). All power outputs feature duplicated pins (e.g., OUT1A ×2, VCC1A ×2) to minimize PCB trace impedance and ensure stable high-current switching up to 384 kHz.

Key Specifications

Pinout & Package

The STA515WJ13TR uses a 36-pin PowerSSO package with exposed pad down (EPD), optimized for high-power audio applications requiring low thermal resistance and robust ground/power distribution.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad half-bridge audio amplifier applications.

Compared with TAS5381AIPAG, STA515WJ13TR offers superior thermal capability (1.5 vs. 3.2 °C/W) and flexible topology selection; versus IRS2092SPBF, it reduces bill-of-materials and design cycle time by integrating protection, regulation, and matched DMOS outputs in one package.

Availability

STA515WJ13TR is available at Aetrix Electronics and suitable for home theater receivers, soundbar modules, professional stage monitors, and active studio monitors requiring stable component supply and long-term production continuity.

Supply support for STA515WJ13TR 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 automotive, industrial, and power management ICs with strong analog and mixed-signal expertise.

The STA515WJ13TR belongs to ST's Class-D audio power stage product line, engineered specifically for high-efficiency, low-THD digital audio amplification in space- and thermal-constrained consumer and pro-audio equipment.

FAQ

What is the recommended PCB layout practice for the PowerSSO36 EPD package?

Mount the exposed pad directly to a large internal copper pour tied to GNDSUB (Pin 1) via ≥6 thermal vias (0.3 mm diameter, spaced ≤1 mm apart). Route all duplicated power/ground pins (e.g., VCC1A ×2, GND1A ×2) with identical trace width/length to minimize current imbalance. Keep high-frequency PWM traces short and avoid crossing sensitive analog lines.

How does the CONFIG pin affect thermal performance in parallel-BTL mode?

When CONFIG = VDD, both half-bridges per channel operate in parallel, doubling current capability but increasing total power dissipation by ~25% due to higher conduction losses. The 1.5 °C/W thermal resistance remains valid only if the EPD pad is fully soldered and heatsinked; derate output power by 15% above 60 °C ambient unless forced-air cooling is applied.

Can STA515WJ13TR drive 2 Ω loads?

No. Absolute maximum ratings specify 40 V VCC but do not guarantee safe operation below 4 Ω. Driving 2 Ω loads exceeds the 3 A per half-bridge current limit and risks triggering overcurrent protection or thermal shutdown, even at reduced voltage. ST recommends minimum 4 Ω for single-ended and 8 Ω for BTL configurations.

What is the function of the VL pin beyond setting logic thresholds?

VL serves as the reference for all input thresholds (INxA/INxB, PWRDN, TRISTATE) and directly scales their switching points-e.g., at VL = 3.3 V, VIN-HIGH = 2.0 V min and VIN-LOW = 0.8 V max. It must be stabilized with a 100 nF ceramic capacitor to GNDCLEAN and share the same supply domain as the upstream PWM controller to prevent metastability.