Overview
The TPSM53603 power module, produced by Texas Instruments, is a highly integrated 3-A power solution designed for a wide range of applications. It combines a 36-V input, step-down DC/DC converter with power MOSFETs, a shielded inductor, and passives in a thermally-enhanced QFN package. The module features Texas Instruments' Enhanced HotRod QFN technology, which provides improved thermal performance, a small footprint, and low EMI. This compact package measures 5-mm x 5.5-mm x 4-mm and includes a single large thermal pad for easy layout and handling in manufacturing. The TPSM53603 requires as few as four external components, simplifying the design process by eliminating the need for loop compensation and magnetics part selection.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 3.8 | 36 | V | |
| Output Voltage Range | 1 | 7 | V | |
| Output Current | 3 | A | ||
| Efficiency | 91 | 95 | % | |
| Operating IC Junction Temperature | -40 | 125 | °C | |
| Operating Ambient Temperature | -40 | 105 | °C | |
| Switching Frequency | 1.4 | MHz | ||
| Package Type | B3QFN (15 pins) | |||
| Package Size | 5.0 mm x 5.5 mm x 4 mm |
Key Features
- Functional Safety-Capable: Documentation available to aid functional safety system design.
- Enhanced HotRod QFN Package: Industry’s smallest 36-V, 3-A footprint with excellent thermal performance.
- Low EMI: Meets CISPR11 radiated emissions standards.
- High Efficiency: Up to 95% efficiency at 25°C.
- Power-Good Flag: Indicates when the output is within its nominal voltage range.
- Precision Enable: Allows for precise control over the enable function.
- Protection Features: Built-in hiccup-mode short-circuit protection, overtemperature protection, start-up into pre-bias output, soft start, and UVLO.
- Thermal Performance: Up to 18 W output power at 85°C with no airflow.
- Pin Compatibility: Pin compatible with 4-A TPSM53604 and 2-A TPSM53602.
- Design Tools: EVM Design Files and WEBENCH Power Designer available for fast and custom design.
Applications
- General Purpose Wide VIN Power Supplies
- Factory Automation and Control
- Test and Measurement
- Aerospace and Defense
- Negative Output Voltage Applications
Q & A
- What is the input voltage range of the TPSM53603? The input voltage range is from 3.8 V to 36 V.
- What is the output voltage range of the TPSM53603? The output voltage range is from 1 V to 7 V.
- What is the maximum output current of the TPSM53603? The maximum output current is 3 A.
- What is the efficiency of the TPSM53603? The efficiency can be up to 95% at 25°C.
- What type of package does the TPSM53603 use? It uses a B3QFN (15 pins) package with Enhanced HotRod QFN technology.
- What are the key protection features of the TPSM53603? It includes hiccup-mode short-circuit protection, overtemperature protection, start-up into pre-bias output, soft start, and UVLO.
- How does the TPSM53603 handle thermal performance? It provides excellent thermal performance, allowing up to 18 W output power at 85°C with no airflow.
- Is the TPSM53603 pin compatible with other models? Yes, it is pin compatible with the 4-A TPSM53604 and the 2-A TPSM53602.
- What design tools are available for the TPSM53603? EVM Design Files and the WEBENCH Power Designer are available for fast and custom design.
- What are some common applications of the TPSM53603? Common applications include general purpose wide VIN power supplies, factory automation and control, test and measurement, aerospace and defense, and negative output voltage applications.
