SLVSAU1E May 2011 – August 2016 TPS54228
PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Detailed Description
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息
1 Features
- D-CAP2™ Mode Enables Fast Transient Response
- Low Output Ripple and Allows Ceramic Output Capacitor
- Wide VIN Input Voltage Range: 4.5 V to 18 V
- Output Voltage Range: 0.76 V to 7 V
- Highly Efficient Integrated FETs Optimized
for Lower Duty Cycle Applications
– 155 mΩ (High-Side) and 108 mΩ (Low-Side) - High Efficiency, Less than 10 µA at Shutdown
- High Initial Bandgap Reference Accuracy
- Adjustable Soft Start
- Prebiased Soft Start
- 700-kHz Switching Frequency (fSW)
- Cycle-by-Cycle Overcurrent Limit
- Auto-Skip Eco-Mode™ for High Efficiency at Light Load
2 Applications
- Wide Range of Applications for Low Voltage System
- Digital TV Power Supply
- High Definition Blu-ray Disc™ Players
- Networking Home Terminals
- Digital Set Top Boxes (STB)
3 Description
The TPS54228 device is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54228 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54228 uses the D-CAP2™ mode control that provides a fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-Mode™ operation at light loads. Eco-Mode™ allows the TPS54228 to maintain high efficiency during lighter load conditions. The TPS54228 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VIN input. The output voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft start time. The TPS54228 is available in 8-pin SO , 8-pin SOIC, and 10-pin VSON packages, and is designed to operate over the ambient temperature range of –40°C to 85°C.
Device Information(1)
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| TPS54228 | HSOP (8) | 4.89 mm × 3.90 mm |
| SOIC (8) | 4.89 mm × 3.90 mm | |
| VSON (10) | 3.00 mm × 3.00 mm |
- For all available packages, see the orderable addendum at the end of the data sheet.
Simplified Schematic
TPS54228 Transient Response
