TPS55386 具有高端 MOSFET 和外部补偿的 3A、600kHz 双路非同步降压转换器

TPS55386 描述

The TPS55383 and TPS55386 are dual output, non-synchronous buck converters capable of supporting 3-A output applications that operate from a 4.5-V to 28-V input supply voltage, and require output voltages between 0.8 V and 90% of the input voltage.

With an internally-determined operating frequency and soft start time, these converters provide many features with a minimum of external components. The outputs of the two error amplifiers are accessible allowing user optimization of the feedback loop under a wide range of output filter characteristics. Channel 1 overcurrent protection is set at 4.5 A, while Channel 2 overcurrent protection level is selected by connecting a pin to ground, to BP, or left floating. The setting levels are used to allow for scaling of external components for applications that do not need the full load capability of both outputs

	TPS54383	TPS54386	TPS55383	TPS55386
Iout(Max)(A)	3	3	3	3
Iout2(Max)(A)	3	3	3	3
Vin(Min)(V)	4.5	4.5	4.5	4.5
Vin(Max)(V)	28	28	28	28
Vout(Min)(V)	0.8	0.8	0.8	0.8
Vout(Max)(V)	25.2	25.2	25.2	25.2
Iq(Typ)(mA)	1.8	1.8	1.8	1.8
Switching Frequency(Typ)(kHz)	300	600	300	600
Switch Current Limit(Typ)(A)	4.5	4.5	4.5	4.5
Topology	Buck	Buck	Buck	Buck
Operating Temperature Range(°C)	-40 to 125	-40 to 125	-40 to 125	-40 to 125
Pin/Package	14HTSSOP	14HTSSOP	16HTSSOP	16HTSSOP
Rating	Catalog	Catalog	Catalog	Catalog
Duty Cycle(Max)(%)	90	85	90	85
Vout2(Min)(V)	0.8	0.8	0.8	0.8
Vout2(Max)(V)	25.2	25.2	25.2	25.2
Regulated Outputs(#)	2	2	2	2

TPS55386 特性

• 4.5-V to 28-V Input Range
• Output Voltage 0.8 V to 90% of Input Voltage
• Output Current Up to 3 A
• Two Fixed Switching Frequency Versions:
  • TPS55383: 300 kHz
  • TPS55386: 600 kHz
• Three Selectable Levels of Overcurrent Protection (Output 2)
• 0.8-V 1.75% Voltage Reference
• 2.1-ms Internal Soft Start
• Dual PWM Outputs 180° Out-of-Phase
• Ratiometric or Sequential Startup Modes
• Configurable as Dual Output or Two-Channel Single Output Multiphase for 6 amp Capability
• 85-Ω Internal High-Side MOSFETs
• Current Mode Control with External Compensation
• Pulse-by-Pulse Overcurrent Protection
• Thermal Shutdown Protection at +148°C
• 16-Pin PowerPAD HTSSOP package
• APPLICATIONS
  • Set Top Box
  • Digital TV

TPS55386 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
TPS55386PWP	ACTIVE	-40 to 125	2.50 | 1ku	HTSSOP (PWP) | 16	90 | TUBE	TPS55386
TPS55386PWPG4	ACTIVE	-40 to 125	2.50 | 1ku	HTSSOP (PWP) | 16	90 | TUBE	TPS55386
TPS55386PWPR	ACTIVE	-40 to 125	2.25 | 1ku	HTSSOP (PWP) | 16	2000 | LARGE T&R	TPS55386
TPS55386PWPRG4	ACTIVE	-40 to 125	2.25 | 1ku	HTSSOP (PWP) | 16	2000 | LARGE T&R	TPS55386

TPS55386 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
TPS55386PWP	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR		TPS55386PWP
TPS55386PWPG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	TPS55386PWPG4	TPS55386PWPG4
TPS55386PWPR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR		TPS55386PWPR
TPS55386PWPRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	TPS55386PWPRG4	TPS55386PWPRG4

TPS55386 应用技术支持与电子电路设计开发资源下载

1. TPS55386 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)

TPS55386 相关工具

名称	型号	公司	工具/软件类型
TPS55386 13.2V 输入、3.3V 和 5V 双输出、3A 评估模块	TPS55386EVM-363	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

TPS55386 参考设计

说明	型号	公司
3-A, 600-kHz Dual Wide-Input Buck Converter	PMP2808	Texas Instruments