STMicroelectronics STA510A13TR

Overview

STA510A13TR from STMicroelectronics is a monolithic quad half-bridge power stage in Multipower BCD technology, designed as the output stage for stereo all-digital DDX® amplifiers. It delivers 50 W per channel into 3 Ω (THD = 10%, V_CC = 36 V) in dual-bridge mode or 200 W into 3 Ω in single-BTL configuration, with 150 mΩ R_DS(on), thermal warning output (TH_WARN), and undervoltage protection.

For engineers reviewing the STA510A13TR datasheet, STA510A13TR pinout, STA510A13TR application, or STA510A13TR equivalent, this device supports reconfigurable bridge topologies (dual-BTL, single-BTL, or quad half-bridge), features CMOS-compatible logic inputs referenced to VL, and integrates short-circuit, thermal, and undervoltage protection with open-drain fault signaling.

Technical Context

The STA510A13TR implements four independent half-bridge stages, each with complementary P/N-channel DMOS outputs and matched R_DS(on) (≥95% matching). Its logic interface accepts ternary, phase-shift, or binary PWM inputs, with input thresholds proportional to VL (2.7–5.0 V), enabling direct interfacing with DDX® modulators like STA321 or STA309A.

Protection architecture includes thermal shutdown at 150 °C (25 °C hysteresis), thermal warning at 130 °C (open-drain TH_WARN), short-circuit current limiting (5.5–6 A), and undervoltage lockout (7 V threshold). Configuration via CONFIG pin enables single-BTL (double-current) or half-bridge (half-current) modes without external hardware changes.

Key Specifications

Pinout & Package

STA510A13TR uses the PowerSO-36 (exposed pad up) package, optimized for thermal dissipation with a low 1–2.5 °C/W junction-to-case resistance via the top-side slug. All power, ground, and output pins are duplicated to reduce parasitic inductance and improve current sharing in high-power audio applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TAS5381AIPAG and IRS2092SPBF, STA510A13TR uniquely combines reconfigurable topology, integrated thermal warning, and matched MOSFETs in a single PowerSO-36 package-reducing design cycle time and improving reliability in space-constrained audio systems.

Availability

STA510A13TR is available at Aetrix Electronics and suitable for home theater amplifiers, automotive infotainment systems, and professional PA modules requiring stable component supply across extended production lifecycles.

Supply support for STA510A13TR 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 power management, analog, MEMS, and microcontroller technologies for industrial, automotive, and consumer markets.

STA510A13TR belongs to ST's DDX® audio power stage product line, engineered specifically for high-efficiency, low-THD digital audio amplification in space- and thermally constrained applications.

FAQ

What is the purpose of the VL pin on the STA510A13TR?

The VL pin sets the logic threshold voltage for all digital inputs (IN1A, IN1B, CONFIG, PWRDN, etc.). Input high/low thresholds are defined as VL/2 ± 300 mV, ensuring compatibility with 2.7–5.0 V logic supplies. It must be tied to the same voltage rail as the PWM controller's logic supply to prevent mis-triggering or increased propagation delay.

How does the CONFIG pin change the STA510A13TR's operating mode?

When CONFIG is pulled high to VDD, the device configures as a single-BTL bridge by internally connecting OUT1A↔OUT1B and OUT2A↔OUT2B, doubling current capability (200 W into 3 Ω). When low, it operates as two independent dual-BTL channels (2×100 W). Input pins must be externally joined accordingly (IN1A=IN1B, etc.) for correct mode behavior.

Can the STA510A13TR drive 4 Ω loads reliably?

Yes-the datasheet confirms operation into 4 Ω loads using the application circuits in Figures 9 and 10. At V_CC = 36 V, it delivers up to 180 W in single-BTL mode with THD = 10%. Thermal design must account for higher I²R losses: junction temperature must remain below 150 °C, requiring adequate heatsinking per the 1–2.5 °C/W thermal resistance of the PowerSO-36 slug-up package.

What happens when the FAULT pin goes low?

A low FAULT pin indicates active thermal overload, short circuit, or undervoltage condition. The internal protection circuit immediately disables all power MOSFETs, forcing outputs into high-impedance state. Recovery depends on external circuitry: if FAULT and TRISTATE are separate, a manual toggle of TRISTATE resets the device; if tied together with an RC network, automatic recovery occurs after a delay determined by R×C.