MPS Launches Automotive-Grade TFT LCD Bias Driver IC

Monolithic Power Systems (MPS, NASDAQ: MPWR) has announced the release of its new automotive-grade Thin-Film Transistor Liquid Crystal Display (TFT LCD) bias driver—MPQ5613D-AEC1. Certified to AEC-Q100 Grade 1 reliability standards, this highly integrated solution is designed for a wide range of in-vehicle display applications, including instrument clusters, center-stack displays, and head-up displays (HUDs).

As vehicle intelligence advances rapidly, the automotive display market is experiencing significant growth. TFT LCD technology remains dominant, accounting for over 90% of automotive displays. The MPQ5613D-AEC1 addresses this demand with a purpose-built architecture that integrates four regulated output channels, a VCOM buffer, and gate voltage shaping functionality—all optimized for automotive TFT LCD panels.

Highly Flexible and Scalable Power Delivery

The MPQ5613D-AEC1 operates from an input voltage range of 2.7V to 12V. All four output rails and the VCOM buffer feature adjustable voltage settings:

• Boost and buck-boost modules support up to 500mA output current
• Positive and negative charge pumps deliver up to 50mA
• VCOM buffer provides up to 25mA

With a boost output range of 2.7V to 21.8V and a buck-boost (negative) output range of –0.7V to –16.6V, the device can drive larger and higher-resolution display panels commonly used in modern vehicles.

Optimized for Diverse Automotive Applications

Beyond its versatile power capabilities, the MPQ5613D-AEC1 offers advanced features to enhance system compatibility and performance:

• Six selectable switching frequencies (up to 3MHz)
• Spread-spectrum operation to reduce EMI
• Frequency synchronization and 180° phase-shift control between boost and buck-boost modules for further EMI suppression
• I²C interface for flexible configuration of power-up/down sequencing for VDDP, VDDN, VGH, and VGL

These capabilities allow seamless integration across various display panel architectures and OEM requirements.

Robust Protection for Reliable Operation

To ensure safe and stable performance in demanding automotive environments, the MPQ5613D-AEC1 includes comprehensive protection features:

• Input undervoltage lockout (UVLO)
• Cycle-by-cycle current limiting on SWP/SWN
• Over-temperature protection (OTP)
• Undervoltage protection (UVP) on VDDP/VDDN/VGH/VGL
• VCOM over-current protection (OCP)
• VDDP output current limiting

Compact, Integrated Package Design

Built on MPS’s expertise in power integration, the MPQ5613D-AEC1 incorporates the VCOM buffer and gate voltage shaping circuitry into a space-saving QFN package (4mm × 5mm). This high level of integration significantly reduces PCB footprint and minimizes external component count—lowering both BOM cost and system complexity.

About Monolithic Power Systems (MPS)

Monolithic Power Systems, Inc. (MPS) is a global leader in semiconductor-based, high-performance power solutions. Founded in 1997 by CEO Michael Hsing, MPS is driven by a mission to reduce energy and material consumption while improving quality of life. The company combines deep system-level knowledge, world-class analog design expertise, and proprietary semiconductor process and integration technologies to deliver reliable, compact, and highly efficient monolithic power solutions. These innovations enable greener, more cost-effective products while delivering sustained value to shareholders.

Source: Monolithic Power Systems (MPS) Co., Ltd.