STMicroelectronics EVAL-L5963Q

Overview

EVAL-L5963Q from STMicroelectronics is an evaluation board for the L5963Q multichannel voltage regulator in VQFPN-48 package, supporting independent operation of two DC-DC converters (1.2 V @ 2 MHz and 5 V @ 250 kHz) and a 3.3 V/250 mA LDO, with onboard oscillator and input sync capability up to 2 MHz - used in automotive power system validation.

For engineers reviewing the EVAL-L5963Q datasheet, EVAL-L5963Q pinout, EVAL-L5963Q application, or EVAL-L5963Q equivalent, key selection factors include dual-switching frequency configurability, independent enable control via jumpers, output voltage adjustability, and separate supply pins for DC-DC1, DC-DC2, and LDO domains.

Technical Context

The board implements the L5963Q regulator IC in VQFPN-48, enabling simultaneous evaluation of three regulated outputs: DC-DC1 (1.2 V, 2 MHz, 3 A), DC-DC2 (5 V, 250 kHz, 3 A), and LDO (3.3 V, 250 mA). Frequency synchronization is supported via external input or internal oscillator.

Jumpers provide discrete enable/disable control for each regulator channel, while dedicated pins allow independent input sourcing for DC-DC1, DC-DC2, and LDO - facilitating isolated power domain testing and transient load analysis under varied input conditions.

Key Specifications

Availability

EVAL-L5963Q is available at Aetrix Electronics and suitable for automotive ADAS module development, industrial PLC power architecture validation, and embedded gateway reference design requiring stable component supply and rapid prototyping support.

Supply support for EVAL-L5963Q 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, designing and manufacturing microcontrollers, power management ICs, sensors, and analog devices for automotive, industrial, and consumer markets.

The EVAL-L5963Q belongs to ST's power evaluation board family, engineered specifically to accelerate validation of multichannel PMICs in automotive-grade power systems with strict transient response and thermal constraints.

FAQ

What is the primary function of the EVAL-L5963Q evaluation board?

The EVAL-L5963Q is a hardware platform designed exclusively to evaluate the L5963Q triple-output voltage regulator IC. It provides accessible test points, jumper-controlled enable/disable functionality, and independent input pins to validate DC-DC1 (1.2 V), DC-DC2 (5 V), and LDO (3.3 V) performance under real-world load, frequency, and thermal conditions.

Can the switching frequencies of DC-DC1 and DC-DC2 be set independently?

Yes - DC-DC1 operates natively at 2 MHz and DC-DC2 at 250 kHz, but both can be synchronized to a common external clock input up to 2 MHz. The onboard oscillator also allows standalone frequency tuning without external signal sources, supporting EMI testing and layout optimization.

Does the board support output voltage adjustment beyond the default settings?

Yes - all three outputs (DC-DC1, DC-DC2, LDO) are configured using external resistor dividers per the L5963Q datasheet. The board includes footprint space and routing for these resistors, enabling validation of custom output voltages without soldering modifications to the regulator IC itself.

How does EVAL-L5963Q differ from EVAL-L5963?

EVAL-L5963Q is optimized for the L5963Q in VQFPN-48 package, while EVAL-L5963 targets the L5963D in PowerSSO-36 slug-down package. Differences include PCB layout, thermal pad implementation, pin pitch, and mechanical mounting - making them non-interchangeable for package-specific validation such as reflow profile or heatsink integration.