TPS54350 4.5V 至 20V、3A 同步降压 SWIFTTM 转换器

TPS54350 描述

The TPS54350 is a medium output current synchronous buck PWM converter with an integrated high side MOSFET and a gate driver for an optional low side external MOSFET. Features include a high performance voltage error amplifier that enables maximum performance under transient conditions and flexibility in choosing the output filter inductors and capacitors. The TPS54350 has an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 4.5 V; an internal slow-start circuit to limit in-rush currents; and a power good output to indicate valid output conditions. The synchronization feature is configurable as either an input or an output for easy 180° out of phase synchronization.

The TPS54350 device is available in a thermally enhanced 16-pin TSSOP (PWP) PowerPADTM package.

	TPS54060	TPS54160	TPS54260	TPS54350	TPS54350	TPS5450	TPS54550
Iout(Max)(A)	0.5	1.5	2.5	3	3	5	6
Vin(Min)(V)	3.5	3.5	3.5	5.5	4.5	5.5	4.5
Vin(Max)(V)	60	60	60	36	20	36	20
Vout(Min)(V)	0.8	0.8	0.8	1.23	0.9	1.22	0.9
Vout(Max)(V)	58	58	58	31	12	31	12
Iq(Typ)(mA)	0.116	0.116	0.138	3	5	3	9
Switching Frequency(Max)(kHz)	2500	2500	2500		700	500	700
Switching Frequency(Typ)(kHz)				500
Switch Current Limit(Typ)(A)	0.6	1.8	3.5	4	3.3	6	7.5
Topology	Buck, Inverting Buck/Boost	Buck, Inverting Buck/Boost	Buck ,Inverting Buck/Boost	Buck, Inverting Buck/Boost	Buck, Inverting Buck/Boost	Buck	Buck
Operating Temperature Range(°C)	-40 to 150	-40 to 150	-40 to 150	-40 to 125	-40 to 150,-40 to 150)	-40 to 125	-40 to 150
Pin/Package	10MSOP-PowerPAD	10MSOP-PowerPAD	10MSOP-PowerPAD	8SO PowerPAD	16HTSSOP	8SO PowerPAD	16HTSSOP
Rating	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog
Duty Cycle(Max)(%)	98	98	98	87	80	89	80
Regulated Outputs(#)	1	1	1	1	1	1	1
Thermal Shutdown	Yes	Yes	Yes	Yes	yes		yes

TPS54350 特性

• 100 mOhm, 4.5-A Peak MOSFET Switch for High Efficiency at 3-A Continuous Output Current
• Uses External Lowside MOSFET or Diode
• Output Voltage Adjustable Down to 0.891 V With 1% Accuracy
• Synchronizes to External Clock
• 180° Out of Phase Synchronization
• Wide PWM Frequency – Fixed 250 kHz, 500 kHz or Adjustable 250 kHz to 700 kHz
• Internal Slow Start
• Load Protected by Peak Current Limit and Thermal Shutdown
• Adjustable Undervoltage Lockout
• 16-Pin TSSOP PowerPADTM Package
• APPLICATIONS
  • Industrial & Commercial Low Power Systems
  • LCD Monitors and TVs
  • Computer Peripherals
  • Point of Load Regulation for High Performance DSPs, FPGAs, ASICs and Microprocessors

TPS54350 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
TPS54350PWP	ACTIVE	-40 to 150	2.05 | 1ku	HTSSOP (PWP) | 16	90 | TUBE	PS54350
TPS54350PWPG4	ACTIVE	-40 to 150	2.05 | 1ku	HTSSOP (PWP) | 16	90 | TUBE	PS54350
TPS54350PWPR	ACTIVE	-40 to 150	1.85 | 1ku	HTSSOP (PWP) | 16	2000 | LARGE T&R	PS54350
TPS54350PWPRG4	ACTIVE	-40 to 150	1.85 | 1ku	HTSSOP (PWP) | 16	2000 | LARGE T&R	PS54350

TPS54350 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
TPS54350PWP	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM		TPS54350PWP
TPS54350PWPG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPS54350PWPG4	TPS54350PWPG4
TPS54350PWPR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM		TPS54350PWPR
TPS54350PWPRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPS54350PWPRG4	TPS54350PWPRG4

TPS54350 应用技术支持与电子电路设计开发资源下载

1. TPS54350 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)

TPS54350 相关工具

名称	型号	公司	工具/软件类型
3A， 输入电压为 4.5V 至 20V 且输出电压可调节的 DC/DC 转换器	TPS54350EVM-235	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