TPS62420 具有 1 线接口、采用 QFN 封装的双路可调节 600mA 和 1000mA、2.25MHz 步降转换器
TPS62420 描述
The TPS62420 device is a synchronous dual step-down DC-DC converter optimized for battery powered portable applications. It provides two independent output voltage rails powered by 1-cell Li-Ion or 3-cell NiMH/NiCD batteries. The device is also suitable to operate from a standard 3.3V or 5V voltage rail.
With an input voltage range of 2.5V to 6V, the TPS62420 is ideal to power portable applications like smart phones, PDAs, and other portable equipment.
With the EasyScale™ serial interface the output voltages can be modified during operation. It therefore supports Dynamic Voltage Scaling for low power DSP and processors.
The TPS62420 operates at 2.25MHz fixed switching frequency and enter the Power Save Mode operation at light load currents to maintain high efficiency over the entire load current range.
|
TPS62400 |
TPS62401 |
TPS62402 |
TPS62403 |
TPS62404 |
TPS62410 |
TPS62420 |
| Iout(Max)(A) |
0.4 |
0.4 |
0.4 |
0.4 |
0.4 |
0.8 |
0.6 |
| Iout2(Max)(A) |
0.6 |
0.6 |
0.6 |
0.6 |
0.6 |
0.8 |
1 |
| Vin(Min)(V) |
2.5 |
2.5 |
2.5 |
2.5 |
2.5 |
2.5 |
2.5 |
| Vin(Max)(V) |
6 |
6 |
6 |
6 |
6 |
6 |
6 |
| Vout(Min)(V) |
0.6 |
1.1 |
1.2 |
1.1 |
1.2 |
0.6 |
0.6 |
| Vout(Max)(V) |
6 |
1.575 |
1.8 |
1.575 |
1.9 |
6 |
6 |
| Iq(Typ)(mA) |
0.032 |
0.032 |
0.032 |
0.032 |
0.032 |
0.032 |
0.032 |
| Switching Frequency(Max)(kHz) |
2250 |
2250 |
2250 |
2250 |
2250 |
2250 |
2250 |
| Switch Current Limit(Typ)(A) |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
| Topology |
Buck |
Buck |
Buck |
Buck |
Buck |
Buck |
Buck |
| Operating Temperature Range(°C) |
-40 to 85 |
-40 to 85 |
-40 to 85 |
-40 to 85 |
-40 to 85 |
-40 to 85 |
-40 to 85 |
| Pin/Package |
10SON |
10SON |
10SON |
10SON |
10SON |
10SON |
10SON |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
| Duty Cycle(Max)(%) |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
| Vout2(Min)(V) |
0.6 |
2.8 |
3.3 |
2.8 |
3.3 |
0.6 |
0.6 |
| Vout2(Max)(V) |
6 |
2.8 |
3.3 |
2.8 |
3.3 |
6 |
6 |
| Regulated Outputs(#) |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
| Thermal Shutdown |
No |
No |
No |
No |
No |
No |
No |
TPS62420 特性
- High Efficiency—Up to 95%
- VIN Range From 2.5 V to 6 V
- 2.25 MHz Fixed Frequency Operation
- Output Current 400 mA and 600 mA
- Adjustable Output Voltage From 0.6V to VIN
- Pin Selectable Output Voltage Supports Simple Dynamic Voltage Scaling
- EasyScale™ Optional One-Pin Serial Interface
- Power Save Mode at Light Load Currents
- 180° Out of Phase Operation
- Output Voltage Accuracy in PWM Mode ±1%
- Typical 32-µA Quiescent Current for Both Converters
- 100% Duty Cycle for Lowest Dropout
- Available in a 10-Pin QFN (3×3mm)
- APPLICATIONS
- Cell Phones, Smart-phones
- PDAs, Pocket PCs
- OMAP™ and Low Power DSP Supply
- Portable Media Players
- Digital Radio
- Digital Cameras
TPS62420 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 |
| TPS62420DRCR |
ACTIVE |
-40 to 85 |
1.15 | 1ku |
SON (DRC) | 10 |
3000 | LARGE T&R |
BQE |
| TPS62420DRCRG4 |
ACTIVE |
-40 to 85 |
1.15 | 1ku |
SON (DRC) | 10 |
3000 | LARGE T&R |
BQE |
| TPS62420DRCT |
ACTIVE |
-40 to 85 |
1.30 | 1ku |
SON (DRC) | 10 |
250 | SMALL T&R |
BQE |
| TPS62420DRCTG4 |
ACTIVE |
-40 to 85 |
1.30 | 1ku |
SON (DRC) | 10 |
250 | SMALL T&R |
BQE |
TPS62420 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 |
| TPS62420DRCR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS62420DRCR |
| TPS62420DRCRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS62420DRCRG4 |
TPS62420DRCRG4 |
| TPS62420DRCT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS62420DRCT |
| TPS62420DRCTG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS62420DRCTG4 |
TPS62420DRCTG4 |
TPS62420 应用技术支持与电子电路设计开发资源下载
- TPS62420 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)
TPS62420 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| TPS62420 评估模块 |
TPS62420EVM-167 |
Texas Instruments |
开发电路板/EVM |
| Software for TPS624xx Evaluation Modules |
TPS624XXEVM-SW |
Texas Instruments |
应用软件 |
| SwitcherPro(TM) 开关电源设计工具 |
SWITCHERPRO |
Texas Instruments |
应用软件 |
TPS62420 参考设计
| 说明 |
型号 |
公司 |
| LDO、降压/升压、2 相同步降压、同步升压参考设计 |
PR038 |
Texas Instruments |
| 以太网电源 - 同步反向参考设计 |
PMP386 |
Texas Instruments |
| 同步 降压，两个输入电压 4.5-5.5V 的升压 多输出电压 3.3V、5V 和 12V |
PMP146 |
Texas Instruments |
| 降压/升压参考设计 |
PMP379 |
Texas Instruments |
