회사 블로그 TPS54332 (Texas Instruments) 3.5A/28V Buck Converter, Mingjiada Electronics In-Stock Supply

Mingjiada Electronics offers TI’s TPS54332 in stock—a synchronous buck converter with a wide input voltage range of 3.5V–28V, a 3.5A output, and a fixed frequency of 1MHz, featuring an integrated 80mΩ high-side MOSFET and Eco-mode for high efficiency under light loads. This article summarizes the complete specifications, key features, typical applications, and Mingjiada Electronics’ supply and order fulfillment services for the TPS54332, supporting both sample and volume purchases.

I. TPS54332 Product Overview

The TPS54332 is a 28V, 3.5A asynchronous buck DC/DC converter developed by Texas Instruments (TI). It integrates a low-on-resistance high-side N-channel MOSFET and employs a fixed-frequency peak current-mode control architecture with a fixed switching frequency of 1 MHz. Designed for applications such as industrial control, communications equipment, automotive electronics, and consumer power supplies, this device balances a wide input voltage range with light-load efficiency, making it a common choice for point-of-load (POL) power supply in 5V, 12V, and 24V distributed power systems.

Mingjiada Electronics has long supplied the full range of TI power management devices. The TPS54332 is always in stock, and we offer a one-stop service that includes genuine product guarantees, sample requests, bulk ordering, and BOM fulfillment.

II. Specifications

Part Number: TPS54332

Manufacturer: Texas Instruments

Topology: Asynchronous Buck

Input Voltage Range: 3.5 V – 28 V

Adjustable Output Voltage: As low as 0.8 V

Continuous Output Current: 3.5 A

Integrated High-Side MOSFET: 80 mΩ (typical)

Switching Frequency: Fixed at 1 MHz

Quiescent Current: 1 µA (typical)

Control Mode: Fixed-frequency peak current mode

Light-Load Efficiency Mode: Pulse-Skipping Eco-mode

Protection Features: Cycle-by-cycle current limit, frequency foldback, thermal shutdown, overvoltage transient protection

Package: 8-pin SOIC PowerPAD™ (DDA), 4.9 mm × 6 mm

Operating Junction Temperature Range: –40°C to 150°C

Absolute Maximum Input Voltage: 30 V

III. Key Features

1. Wide input voltage range and adjustable output down to 0.8 V. The 3.5 V to 28 V input range covers industrial 24 V buses, 12 V intermediate rails, and direct buck conversion requirements for 5 V systems; the output voltage is set via an external resistor divider and can be adjusted down to 0.8 V, making it suitable for powering FPGA cores, DSPs, and low-voltage digital logic.

2. Integrated 80 mΩ high-side MOSFET with an output capability of 3.5 A. The built-in high-side power device reduces the number of external components and board space requirements, while the 80 mΩ on-resistance helps control conduction losses under 3.5 A full-load conditions.

3. Eco-mode pulse skipping technology improves efficiency at light loads. Under light load or standby conditions, the device automatically enters pulse skipping mode, reducing the switching frequency and thereby significantly improving efficiency; combined with a 1 µA shutdown current, this makes the TPS54332 suitable for battery-powered systems or those with standby power consumption requirements.

4. A fixed 1 MHz switching frequency simplifies filter design. The high fixed switching frequency allows for the use of smaller inductors and ceramic output capacitors, helping to reduce the overall size of the power supply solution while avoiding sensitive frequency bands such as the AM band.

5. Comprehensive protection and programmable features. The device integrates cycle-by-cycle current limiting, frequency clipping, and thermal shutdown to address overload and short-circuit events; overvoltage transient protection circuits suppress voltage overshoot during startup and transients; additionally, soft-start time and UVLO (undervoltage lockout) thresholds are programmable via external components, allowing flexible configuration to meet system timing requirements.

6. Thermally Enhanced PowerPAD Package. The 8-pin SOIC PowerPAD package features an exposed thermal pad on the bottom, effectively reducing the junction-to-board thermal resistance. It supports a wide junction temperature range from –40°C to 150°C, making it suitable for temperature stresses in industrial and automotive environments.

IV. Typical Applications

The TPS54332’s wide input voltage range, 3.5A output capability, and high efficiency at light loads make it suitable for the following key application scenarios:

Industrial Control and Automation: PLC modules, sensor power supplies, and internal power rails for industrial instruments and meters, stepping down voltage directly from a 12V or 24V bus to 5V, 3.3V, or lower.

Communications and Networking Equipment: Point-of-load power supplies for communications infrastructure such as small routers, switches, CPE devices, and serial servers.

Automotive Electronics: In-vehicle infotainment systems, in-vehicle audio power supplies, and power for aftermarket automotive accessories; the asynchronous buck topology enables efficient step-down conversion within 12V automotive systems.

Consumer Electronics and Battery-Powered Devices: Set-top boxes, LCD displays, peripherals, battery chargers, and standby power supplies in portable devices that are sensitive to shutdown current.

Distributed Power Systems: POL conversion in 5V, 12V, and 24V distributed architectures, providing low-voltage, high-current power to digital loads.

V. Mingjiada Electronics Supply and Services

Mingjiada Electronics (Shenzhen Mingjiada Electronics Co., Ltd.) was established in 1996. As an authorized independent distributor for leading international brands such as TI, ADI, ST, NXP, and Xilinx, the company has obtained ISO 9001:2014 and ISO 14001:2014 certifications and maintains a stock of over 2 million part numbers. Regarding TI power management devices, Mingjiada has long supplied buck converters such as the TPS54332, offering genuine, original products and cost-effective custom order solutions for industries including industrial control, communications equipment, automotive electronics, and medical instruments.

Key Supply Features:

Genuine Product Guarantee: Traceable supply channels with support for part number verification and batch number cross-checking.

In-Stock Inventory and Short Lead Times: The TPS54332 is always in stock, shortening procurement lead times.

Flexible Support for Samples and Bulk Orders: We provide sample procurement and accommodate both small-batch orders during the R&D phase and bulk orders during mass production.

One-Stop BOM Fulfillment: In addition to the TPS54332, we can simultaneously source inductors, capacitors, diodes, and peripheral ICs required for power supply solutions, reducing the costs associated with coordinating multiple suppliers.

Contact Information:

Phone: 86-755-83294757 / 13410018555

Email: sales@hkmjd.com

Website: www.integrated-ic.com

Address: 1239–1241, New Asia Guoli Building, Zhenzhong Road, Futian District, Shenzhen

Tags: TPS54332DDAR, TPS54332DDA, TPS54332DD, TPS54332D, TPS54332