STMicroelectronics EVAL2293Q

Overview

EVAL2293Q from STMicroelectronics is an evaluation board for the L2293Q monolithic quad-channel push-pull driver IC, designed to drive inductive loads including relays, solenoids, DC motors, and stepper motors. It supports up to 600 mA continuous output per channel, 1.2 A non-repetitive peak current, and operates with logic supply (VSS) as low as 2.8 V and power supply (VS) up to 36 V.

For engineers reviewing the EVAL2293Q datasheet, EVAL2293Q pinout, EVAL2293Q application, or EVAL2293Q equivalent, this board enables rapid validation of L2293Q switching performance at frequencies up to 50 kHz, thermal behavior under load, enable-controlled dual-bridge operation, and internal clamp diode protection in real-world motor control and relay driving circuits.

Technical Context

The EVAL2293Q board implements the full L2293Q functional architecture: two independent half-bridge pairs (CH1–CH2 and CH3–CH4), each with dedicated enable inputs (ENABLE1, ENABLE2), separate logic (VSS) and power (VS) rails, and integrated clamp diodes across all outputs. It supports TTL/DTL-compatible input thresholds (VIL ≤ 1.5 V, VIH ≥ 2.3 V) and delivers <250 ns rise/fall times with 750 ns turn-on delay.

Thermal design centers on the VFQFPN-32L 5×5 mm package's exposed pad, which must be soldered to a PCB ground plane with ≥18 thermal vias - the board implements this layout per ST's recommended footprint (Rth(JA) = 42 °C/W on double-layer FR4 with optimized copper area).

Key Specifications

Availability

EVAL2293Q is available at Aetrix Electronics and suitable for industrial motor control prototyping, relay interface validation, stepper motor driver development, and embedded power stage qualification requiring stable component supply and documented reference design support.

Supply support for EVAL2293Q 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, delivering silicon solutions for automotive, industrial, power management, and microcontroller applications.

The EVAL2293Q belongs to ST's motor driver evaluation platform family, engineered specifically to accelerate design-in of high-current H-bridge and push-pull drivers in motion control, factory automation, and appliance systems.

FAQ

What is the purpose of the separate VSS and VS supplies on the EVAL2293Q board?

The EVAL2293Q board replicates the L2293Q's dual-supply architecture: VSS powers only the logic circuitry (inputs, enable, level-shifting), allowing operation down to 2.8 V for compatibility with low-voltage microcontrollers; VS powers the output stages, supporting up to 36 V for driving high-voltage inductive loads - enabling independent optimization of logic integrity and power capability.

How does the EVAL2293Q implement thermal management for the L2293Q IC?

The board uses the L2293Q's VFQFPN-32L package with exposed thermal pad, soldered directly to a large GND copper area on the top layer and connected via 18 thermal vias to an extensive bottom-layer ground plane - matching ST's reference layout for Rth(JA) = 42 °C/W - ensuring safe operation at full 4 W dissipation during sustained 600 mA per channel loads.

Can the EVAL2293Q be used to validate dual-H-bridge configurations?

Yes. The board maps the L2293Q's two independent enable inputs (ENABLE1 for CH1/CH2, ENABLE2 for CH3/CH4) and complementary input/output pairs to accessible test points and screw terminals, allowing direct configuration of two fully isolated half-bridges - ideal for validating bidirectional DC motor control or bipolar stepper motor phase sequencing.

Are external clamp diodes required when using the EVAL2293Q with inductive loads?

No. The L2293Q IC mounted on the EVAL2293Q includes integrated clamp diodes across all four outputs, explicitly designed to suppress inductive flyback voltage during switching - eliminating need for external diodes in standard relay, solenoid, or DC motor applications operating within the device's 36 V VS rating and 1.2 A peak current limit.