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TPS53126 双路同步 用于低压电源轨的降压控制器，频率为 350kHz 或 700kHz

TPS53126 描述

The TPS53126 is a dual, adaptive on-time, D-CAP2 mode synchronous Buck controller. The TPS53126 enables system designers to complete the suite of various end equipment's power bus regulators with a cost effective, low external component count, and low standby current solution. The main control loop for the TPS53126 uses the D-CAP2 mode control which provides a very fast transient response with no external components. The TPS53126 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. The device provides convenient and efficient operation with input voltages from 4.5 V to 24 V and output voltages from 0.

	TPS53124	TPS53125	TPS53126	TPS53127
Topology	Buck, D-CAP™Mode	Buck, D-CAP2™ Mode	Buck, D-CAP2™ Mode	Buck, D-CAP2™ Mode
Vin(Min)(V)	4.5	4.5	4.5	4.5
Vin(Max)(V)	24	24	24	24
Vout(Min)(V)	0.76	0.76	0.76	0.76
Vout(Max)(V)	5.5	5.5	5.5	5.5
Regulated Outputs(#)	2	2	2	2
Iout(Max)(A)	15	15	15	15
Switching Frequency(Max)(kHz)	380	350	350, 700	700
Iq(Typ)(mA)	0.45	0.45	0.45	0.45
Pin/Package	24VQFN, 28TSSOP	24TSSOP, 24VQFN	24TSSOP, 24VQFN	24TSSOP, 24VQFN
Thermal Shutdown	Yes	Yes	Yes	Yes
Vout2(Min)(V)	0.76	0.76	0.76	0.76
Vout2(Max)(V)	5.5	5.5	5.5	5.5
Iout2(A)	15	15	15	15
Rating	Catalog	Catalog	Catalog	Catalog
Duty Cycle(Max)(%)	89	89	89	89

TPS53126 特性

• D-CAP2™ Mode Control
  • Fast Transient Response
  • No External Parts Required For Loop Compensation
  • Compatible with Ceramic Output Capacitors
• High Initial Reference Accuracy (±1%)
• Low Output Ripple
• Wide Input Voltage Range: 4.5 V to 24 V
• Output Voltage Range: 0.76 V to 5.5 V
• Low-Side RDS(on) Loss-Less Current Sensing
• Adaptive Gate Drivers with Integrated Boost Diode
• Internal 1.2 ms Voltage-Servo Soft Start
• Pre-Biased Soft Start
• Selectable Switching Frequency: 350 kHz / 700 kHz
• Cycle-by-Cycle Over-Current Limiting Control
• 30 mV to 300 mV OCP Threshold Voltage
• Thermally Compensated OCP by 4000 ppm/C° at ITRIP
• APPLICATIONS
  • Point-of-Load Regulation in Low Power Systems for Wide Range of Applications
    • Digital TV Power Supply
    • Networking Home Terminal

TPS53126 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
TPS53126PW	ACTIVE	-40 to 85	2.15 | 1ku	TSSOP (PW) | 24	50 | TUBE	TPS53126
TPS53126PWR	ACTIVE	-40 to 85	1.95 | 1ku	TSSOP (PW) | 24	2000 | LARGE T&R	TPS53126
TPS53126RGER	ACTIVE	-40 to 85	1.95 | 1ku	VQFN (RGE) | 24	3000 | LARGE T&R	TPS53126
TPS53126RGET	ACTIVE	-40 to 85	2.15 | 1ku	VQFN (RGE) | 24	250 | SMALL T&R	TPS53126

TPS53126 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
TPS53126PW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM		TPS53126PW
TPS53126PWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM		TPS53126PWR
TPS53126RGER	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR		TPS53126RGER
TPS53126RGET	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR		TPS53126RGET

TPS53126 应用技术支持与电子电路设计开发资源下载

1. TPS53126 数据资料 dataSheet 下载.PDF
2. TI 德州仪器非隔离式开关 DC/DC 调节器选型与价格参考 . xls
3. Dual MOSFET Driver (PDF  498 KB)
4. 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)   (PDF  2206 KB)
5. Understanding Boost Power Stages In Switchmode Power Supplies   (PDF  149 KB)
6. Understanding Buck Power Stages In Switchmode Power Supplies   (PDF  173 KB)
7. 标准线性产品交叉参考 (Rev. D)   (PDF  1058 KB)
8. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
9. 所选封装材料的热学和电学性质 (PDF 645 KB)
10. 高速数据转换 (PDF 1967 KB)

TPS53126 相关工具

名称	型号	公司	工具/软件类型
TPS53126EVM 高效双路同步降压控制器评估模块	TPS53126EVM	Texas Instruments	开发电路板/EVM

TPS53126 参考设计

说明	型号	公司
二相同步 降压，输入电压为 5V 或 12V。 多路输出电压：1.8V 和 3.3V	PMP176	Texas Instruments
同步降压时，输入电压为 19.5V	PMP070	Texas Instruments
同步降压，输入电压为 12V	PMP217	Texas Instruments
热插拔、推挽、同步 降压、负反向、双路同步 降压参考设计	PMP156	Texas Instruments
集成 FET、正向、双路同步的同步降压 降压参考设计	PMP041	Texas Instruments