Overview
The TPS53353DQPT, produced by Texas Instruments, is a high-efficiency, single-channel, synchronous buck converter designed for low output voltage point-of-load applications in computing and similar digital consumer applications. This device features Texas Instruments' proprietary D-CAP™ mode control combined with an adaptive on-time architecture, making it ideal for building modern low duty ratio, ultra-fast load step response DC-DC converters. The TPS53353 is integrated with MOSFETs, offering a simple design with a low external component count, which is beneficial for space-conscious power systems.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Input Voltage Range | 1.5 V to 15 V | Conversion input voltage range |
| Output Voltage Range | 0.6 V to 5.5 V | Regulated output voltage range |
| Output Current | Up to 20 A | Maximum output current |
| VDD Supply Voltage Range | 4.5 V to 25 V | Controller power supply input voltage range |
| Integrated MOSFETs | 5.5-mΩ / 2.2-mΩ | On-resistance of the integrated MOSFETs |
| Switching Frequency | Selectable (8 preset values) | Switching frequency selection using RF pin |
| Package Type | 22-pin QFN with PowerPAD™ | Package type and dimensions (5-mm × 6-mm) |
| Operating Temperature Range | –40°C to 85°C | Specified operating temperature range |
Key Features
- D-CAP™ mode control for super fast transient response and no need for external phase compensation network.
- Adaptive on-time architecture to track the preset switching frequency over a wide input and output voltage range.
- Auto-skip mode operation and forced continuous conduction mode selection via MODE pin.
- Integrated boost switch and precharged start-up capability.
- Adjustable overcurrent limit with thermal compensation and overvoltage, undervoltage, UVLO, and overtemperature protection.
- Supports all ceramic output capacitors and open-drain power-good indication).
- Incorporates NexFET™ power block technology and internal soft-start control with selectable internal voltage servo soft start times).
Applications
- Enterprise rack servers and storage systems).
- 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 TPS53353? The input voltage range is from 1.5 V to 15 V.
- What is the maximum output current of the TPS53353? The maximum output current is up to 20 A.
- What is the output voltage range of the TPS53353? The output voltage range is from 0.6 V to 5.5 V.
- What type of control mode does the TPS53353 use? The TPS53353 uses D-CAP™ mode control combined with an adaptive on-time architecture.
- Does the TPS53353 require an external phase compensation network? No, it does not require an external phase compensation network due to its D-CAP™ mode control.
- What is the package type and dimensions of the TPS53353? The package type is a 22-pin QFN with PowerPAD™, and the dimensions are 5-mm × 6-mm.
- What are the key protection features of the TPS53353? The device includes overvoltage, undervoltage, UVLO, and overtemperature protection, as well as adjustable overcurrent limit with thermal compensation).
- Can the TPS53353 support all ceramic output capacitors? Yes, it supports all ceramic output capacitors).
- What is the operating temperature range of the TPS53353? The specified operating temperature range is from –40°C to 85°C).
- What are some typical applications of the TPS53353? Typical applications include enterprise rack servers, wired networking switches and routers, and ASIC, SoC, FPGA, DSP core, and I/O voltage regulation).
