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TPS53353
High-efficiency 1.5-V to 15-V, 20-A synchronous SWIFT™ buck converter with eco-mode
Data sheet
TPS53353
- New product available: TPS548B28 16-V, 20-A synchronous-buck converter with remote sense
- Conversion input voltage range: 1.5 V to 15 V
- VDD input voltage range: 4.5 V to 25 V
- 92% efficiency from 12 V to 1.5 V at 20 A
- Output voltage range: 0.6 V to 5.5 V
- 5-V LDO output
- Supports single-rail input
- Integrated power MOSFETs with 20 A of continuous output current
- Auto-skip Eco-mode™ for light-load efficiency
- < 10-µA shutdown current
- D-CAP™ mode with fast transient response
- Selectable switching frequency from 250 kHz to 1 MHz with external resistor
- Selectable auto-skip or PWM-only operation
- Built-in 1% 0.6-V reference
- 0.7-ms, 1.4-ms, 2.8-ms, and 5.6-ms selectable internal voltage servo soft start
- 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
- 22-pin QFN package with PowerPAD™
- For SWIFT™ power products documentation, see http://www.ti.com/swift
TPS53353 is a D-CAP™ mode, 20-A synchronous switcher with integrated MOSFETs. It is designed for ease of use, low external component count, and space-conscious power systems.
This device features 5.5-mΩ / 2.2-mΩ integrated MOSFETs, accurate 1%, 0.6-V reference, and integrated boost switch. A sample of competitive features include: a conversion input voltage range from 1.5 V to 15 V, very low external component count, D-CAP™ mode control for super fast transient, auto-skip mode operation, internal soft-start control, selectable frequency, and no need for compensation.
The conversion input voltage ranges from 1.5 V to 15 V, the supply voltage range is from 4.5 V to 25 V, and the output voltage range is from 0.6 V to 5.5 V.
The device is available in 5-mm × 6-mm, 22-pin QFN package and is specified from –40°C to 85°C.
The TPS548B28 is a newer 20A device designed for data center applications with a smaller, Pb-free package.
Technical documentation
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Evaluation board
TPS53353EVM-744 — High-Efficiency, 20-A, Synchronous Buck Converter With Eco-mode Control Scheme Evaluation Module
The TPS53353EVM-744 is designed to help the user easily evaluate and test the operation and functionality of the TPS53353 buck converter. The EVM converts a 1.5-V to 15-V input voltage to a regulated 1.5-V output voltage that delivers up to 20 A in a 5-mm x 6-mm QFN package. This board includes (...)
Simulation model
TPS53353 Unencrypted PSpice Transient Model Package (Rev.A) (Rev. B)
SLUM387B.ZIP (38 KB) - PSpice Model
| Package | Pins | Download |
|---|---|---|
| LSON-CLIP (DQP) | 22 | View options |
Ordering & quality
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