Overview
The TPS53355DQPT from Texas Instruments is a high-efficiency, 30-A synchronous buck converter designed for ease of use, low external component count, and space-conscious power systems. This device features integrated MOSFETs, a wide input voltage range of 1.5 V to 15 V, and an output voltage range of 0.6 V to 5.5 V. It incorporates D-CAP™ mode control for fast transient response, auto-skip mode operation, internal soft-start control, and selectable frequency without the need for compensation. The TPS53355DQPT is available in a 22-pin QFN package with PowerPAD™, making it suitable for various high-power applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage (VIN) | -0.3 | 25 | V | |
| Supply Voltage (VDD) | -0.3 | 28 | V | |
| Output Voltage Range | 0.6 | 5.5 | V | |
| Output Current | 30 | A | ||
| High-side MOSFET On-resistance (RDS(on)H) | 5 | mΩ | ||
| Low-side MOSFET On-resistance (RDS(on)L) | 2 | mΩ | ||
| Junction Temperature Range | -40 | 125 | °C | |
| Package Type | 22-pin QFN with PowerPAD™ |
Key Features
- Integrated 5-mΩ/2-mΩ MOSFETs for high efficiency
- Accurate 1% 0.6-V reference voltage
- Integrated boost switch
- Precharged start-up capability
- Adjustable overcurrent limit with thermal compensation
- Overvoltage, undervoltage, UVLO, and overtemperature protection
- Supports all ceramic output capacitors
- Open-drain power-good indication
- Incorporates NexFET™ power block technology
- Selectable internal voltage servo soft start (0.7 ms, 1.4 ms, 2.8 ms, 5.6 ms)
- D-CAP™ mode control for super fast transient response
- Auto-skip mode operation
- No need for compensation
- Green (RoHS compatible) option available
Applications
- Enterprise servers and storage
- Wired networking switches and routers
- ASIC, SoC, FPGA, DSP core, and I/O voltage regulation
Q & A
- What is the input voltage range of the TPS53355DQPT?
The input voltage range is from 1.5 V to 15 V.
- What is the maximum output current of the TPS53355DQPT?
The maximum output current is 30 A.
- What type of package does the TPS53355DQPT come in?
The device is available in a 22-pin QFN package with PowerPAD™.
- Does the TPS53355DQPT support ceramic output capacitors?
Yes, it supports all ceramic output capacitors.
- What are the key protection features of the TPS53355DQPT?
The device includes overvoltage, undervoltage, UVLO, and overtemperature protection.
- Is the TPS53355DQPT RoHS compatible?
Yes, a Green (RoHS compatible) option is available.
- What is the typical on-resistance of the high-side and low-side MOSFETs?
The high-side MOSFET on-resistance is 5 mΩ, and the low-side MOSFET on-resistance is 2 mΩ.
- Does the TPS53355DQPT require external compensation?
No, it does not require external compensation.
- What are the selectable soft start times for the TPS53355DQPT?
The selectable internal voltage servo soft start times are 0.7 ms, 1.4 ms, 2.8 ms, and 5.6 ms.
- How can I design a custom application using the TPS53355DQPT?
You can create a custom design using the WEBENCH Power Designer.
