Overview
The TPS54302DDCT from Texas Instruments is a high-performance, synchronous buck converter designed for a wide range of power supply applications. This device operates with an input voltage range of 4.5 V to 28 V and can deliver a continuous output current of up to 3 A. The TPS54302DDCT integrates two n-channel MOSFETs, which include an 85-mΩ high-side MOSFET and a 40-mΩ low-side MOSFET, enabling high-efficiency power supply designs. The device is packaged in a compact SOT-23-THIN package, making it ideal for space-constrained applications while maintaining high power density.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 4.5 | - | 28 | V |
| Output Current | - | - | 3 | A |
| High-Side MOSFET Rds(on) | - | 85 | - | mΩ |
| Low-Side MOSFET Rds(on) | - | 40 | - | mΩ |
| Switching Frequency | 290 | 400 | 510 | kHz |
| Soft-Start Time | - | 5 | - | ms |
| Operating Junction Temperature | -40 | - | 150 | °C |
| Thermal Shutdown Temperature | - | 165 | - | °C |
Key Features
- Wide input voltage range of 4.5 V to 28 V
- Integrated 85-mΩ high-side and 40-mΩ low-side MOSFETs for high-efficiency designs
- Constant-frequency, peak current-mode control to reduce output capacitance
- Internal loop compensation and 5-ms soft-start to minimize inrush currents
- Pulse-skipping mode at light-load currents to boost efficiency
- Overcurrent protection with hiccup mode and thermal shutdown
- Frequency spread spectrum operation for EMI reduction
- Overvoltage transient protection (OVTP) to minimize output voltage overshoot
- Compact SOT-23-THIN package for high power density and small footprint
Applications
The TPS54302DDCT is suitable for a variety of applications requiring efficient and reliable DC-DC conversion, including:
- Industrial power supplies
- Automotive systems
- Consumer electronics
- Telecommunications equipment
- Medical devices
Q & A
- What is the input voltage range of the TPS54302DDCT?
The input voltage range is from 4.5 V to 28 V.
- What is the maximum output current of the TPS54302DDCT?
The maximum output current is up to 3 A.
- What type of MOSFETs are integrated in the TPS54302DDCT?
The device integrates an 85-mΩ high-side MOSFET and a 40-mΩ low-side MOSFET.
- What is the switching frequency of the TPS54302DDCT?
The switching frequency is fixed at approximately 400 kHz.
- Does the TPS54302DDCT have overcurrent protection?
Yes, it features overcurrent protection with hiccup mode and thermal shutdown.
- How does the TPS54302DDCT reduce EMI?
The device uses frequency spread spectrum operation to reduce EMI.
- What is the purpose of the soft-start feature in the TPS54302DDCT?
The soft-start feature minimizes inrush currents during startup, set to 5 ms typically.
- What is the thermal shutdown temperature of the TPS54302DDCT?
The thermal shutdown temperature is approximately 165°C.
- What package type is the TPS54302DDCT available in?
The device is packaged in a SOT-23-THIN package.
- Does the TPS54302DDCT have overvoltage protection?
Yes, it includes an overvoltage transient protection (OVTP) circuit.
