TPS54326 具有轻载节能功能的 4.5V 至 18V 输入、3A 同步降压 SWIFT™ 转换器
TPS54326 描述
The TPS54326 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54326 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54326 uses the D-CAP2™ mode control which provides a fast transient response with no external components. The adoptive on-time control supports seamless operation between PWM mode at heavy load condition and reduced frequency Eco-Mode operation at light load for high efficiency.
The TPS54326 also has a proprietary circuit that enables the device to adapt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors.
|
TPS54225 |
TPS54226 |
TPS54325 |
TPS54326 |
| Iout(Max)(A) |
2 |
2 |
3 |
3 |
| Vin(Min)(V) |
4.5 |
4.5 |
4.5 |
4.5 |
| Vin(Max)(V) |
18 |
18 |
18 |
18 |
| Vout(Min)(V) |
0.76 |
0.76 |
0.76 |
0.76 |
| Vout(Max)(V) |
5.5 |
5.5 |
5.5 |
5.5 |
| Iq(Typ)(mA) |
0.8 |
0.8 |
0.85 |
0.85 |
| Switching Frequency(Typ)(kHz) |
700 |
700 |
700 |
700 |
| Switch Current Limit(Typ)(A) |
2.5 |
2.5 |
3.5 |
3.5 |
| Topology |
Buck |
Buck |
Buck |
Buck |
| Operating Temperature Range(°C) |
-40 to 85 |
-40 to 85 |
-40 to 85 |
-40 to 85 |
| Pin/Package |
14HTSSOP |
14HTSSOP |
14HTSSOP |
14HTSSOP, 16QFN |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
| Duty Cycle(Max)(%) |
90 |
90 |
90 |
90 |
| Regulated Outputs(#) |
1 |
1 |
1 |
1 |
| Thermal Shutdown |
Yes |
Yes |
Yes |
Yes |
TPS54326 特性
- D-CAP2 Mode Enables Fast Transient Response
- Low Output Ripple and Allows Ceramic Output Capacitor
- Wide VCC Input Voltage Range: 4.5 V to 18 V
- Wide VIN Input Voltage Range: 2 V to 18 V
- Output Voltage Range: 0.76 V to 5.5 V
- Highly Efficient Integrated FET’s Optimized
for Lower Duty Cycle Applications
- 120 mΩ (High Side) and 70 mΩ (Low Side)
- High Efficiency, less than 10 µA at Shutdown
- Auto-Skip Eco-Mode™ for High Efficiency at Light Load
- High Initial Bandgap Reference Accuracy
- Adjustable Soft Start
- Pre-Biased Soft Start
- 700-kHz Switching Frequency (fSW)
- Cycle-By-Cycle Overcurrent Limit
- Power Good Output
- APPLICATIONS
- Wide Range of Applications for Low Voltage System
- Digital TV Power Supply
- High Definition Blu-ray Disc Players
- Networking Home Terminal
- Digital Set Top Box (STB)
TPS54326 芯片订购指南
| 器件 |
状态 |
温度 (oC) |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| TPS54326PWP |
ACTIVE |
-40 to 85 |
1.60 | 1ku |
HTSSOP (PWP) | 14 |
90 | TUBE |
PS54326 |
| TPS54326PWPR |
ACTIVE |
-40 to 85 |
1.45 | 1ku |
HTSSOP (PWP) | 14 |
2000 | LARGE T&R |
PS54326 |
TPS54326 质量与无铅数据
| 器件 |
环保计划* |
铅/焊球涂层 |
MSL 等级/回流焊峰 |
环保信息与无铅 (Pb-free) |
DPPM / MTBF / FIT 率 |
| TPS54326PWP |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS54326PWP |
| TPS54326PWPR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS54326PWPR |
TPS54326 应用技术支持与电子电路设计开发资源下载
- TPS54326 数据资料 dataSheet 下载.PDF
- TI 德州仪器非隔离式开关 DC/DC 调节器选型与价格参考 . xls
- Dual MOSFET Driver
(PDF 498 KB)
- 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)
(PDF 2206 KB)
- Understanding Boost Power Stages In Switchmode Power Supplies
(PDF 149 KB)
- Understanding Buck Power Stages In Switchmode Power Supplies
(PDF 173 KB)
- 标准线性产品交叉参考 (Rev. D)
(PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
TPS54326 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| 4.5V 至 18V 输入、3A SWIFT™ 转换器评估模块 |
TPS54326EVM-540 |
Texas Instruments |
开发电路板/EVM |
| SwitcherPro(TM) 开关电源设计工具 |
SWITCHERPRO |
Texas Instruments |
应用软件 |
TPS54326 参考设计
| 说明 |
型号 |
公司 |
| Synchronous Buck Controller Doubles as a 2-A Buck Boost Inverter |
PMP4856 |
Texas Instruments |
