- 制造厂商:TI
- 产品类别:电源管理
- 技术类目:直流/直流开关稳压器 - 降压稳压器
- 功能描述:4.5V 至 18V 输入、300kHz、1.5/2.5A 双路同步降压转换器
- 点击这里打开及下载TPS54290的技术文档资料
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The TPS54290, TPS54291, and TPS54292 devices are dual-output, fully synchronous buck converters capable of supporting applications with a minimal number of external components. It operates from a 4.5-V to 18-V input supply voltage, and supports output voltages as low as 0.8 V and as high as 90% of the input voltage.
Both high-side and low-side MOSFETs are integrated to provide fully synchronous conversion with higher efficiency. Channel 1 can provide up to 1.5 A of continuous current. Meanwhile, Channel 2 supports up to 2.5 A.
Current mode control simplifies the compensation. The external compensation adds flexibility for the user to choose different type of output capacitors.
180° out-of-phase operation reduces the ripple current through the input capacitor, providing the benefit of reducing input capacitance, alleviating EMI and increasing capacitor life.
- 4.5-V to 18-V Input Range
- Output Voltage Range 0.8 V to DMAX × VIN
- Fully Integrated Dual Buck: 1.5 A and 2.5 A
- Three Fixed Switching Frequency Versions:
- TPS54290: 300 kHz
- TPS54291: 600 kHz
- TPS54292: 1.2 MHz
- Integrated UVLO
- 0.8 VREF With 1% Accuracy (0°C to 85°C)
- Internal Soft Start:
- TPS54290: 5.2 ms
- TPS54291: 2.6 ms
- TPS54292: 1.3 ms
- Dual PWM Outputs 180° Out-of-Phase
- Dedicated Enable for Each Channel
- Current Mode Control for Simplified Compensation
- External Compensation
- Pulse-by-Pulse Overcurrent Protection, 2.2-A and 3.8-A Overcurrent Limit
- Integrated Bootstrap Switch
- Thermal Shutdown Protection at 145°C
- 16-Pin PowerPAD? HTSSOP Package
- APPLICATIONS
- Set-Top Boxes
- Digital TVs
- Power for DSP
- Consumer Electronics
All other trademarks are the property of their respective owners
- Vin (Min) (V)
- 4.5
- Vin (Max) (V)
- 18
- Vout (Min) (V)
- 0.8
- Vout (Max) (V)
- 16.2
- Iout (Max) (A)
- 2.5
- Iq (Typ) (uA)
- 1800
- Switching frequency (Min) (kHz)
- 300
- Switching frequency (Max) (kHz)
- 300
- Features
- Enable, Phase Interleaving, Synchronous Rectification
- Rating
- Catalog
- Regulated outputs (#)
- 2
- Control mode
- Current Mode
- Duty cycle (Max) (%)
- 90
TPS54290的完整型号有:TPS54290PWP、TPS54290PWPR,以下是这些产品的关键参数及官网采购报价:
TPS54290PWP,工作温度:-40 to 145,封装:HTSSOP (PWP)-16,包装数量MPQ:90个,MSL 等级/回流焊峰值温度:Level-2-260C-1 YEAR,引脚镀层/焊球材料:NIPDAU,TI官网TPS54290PWP的批量USD价格:2.112(1000+)
TPS54290PWPR,工作温度:-40 to 145,封装:HTSSOP (PWP)-16,包装数量MPQ:2000个,MSL 等级/回流焊峰值温度:Level-2-260C-1 YEAR,引脚镀层/焊球材料:NIPDAU,TI官网TPS54290PWPR的批量USD价格:1.76(1000+)
TPS54291EVM-431 — 12V 输入、3.3V 1.5A 和 1.2V 以及 2.5A 双路同步降压转换器评估模块
TPS54291EVM-431 评估模块 (EVM) 是双路同步降压转换器,可从 12V 总线提供 3.3V 和 1.2V 固定输出,电流分别高达 1.5A 和 2.5A。该 EVM 设计成从单电源启动,因此无需额外偏置电压即可启动。该模块使用具有集成 MOSET 的 TPS54291 600kHz 双路同步降压转换器。TPS54291EVM-431 设计成使用 12V (+10% /–20%) 稳压总线来产生两个稳压电压轨(在 1.5A 时为 3.3V 并且在 2.5A 时为 1.2V)。TPS54291EVM-431 旨在演示 TPS54291 在典型的 12V (...)TPS54290 Unencrypted PSpice Transient Model Package (Rev. A)
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