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)
• 15.3
• Iout (Max) (A)
• 2.5
• Iq (Typ) (uA)
• 1800
• Switching frequency (Min) (kHz)
• 600
• Switching frequency (Max) (kHz)
• 600
• Features
• Enable, Phase Interleaving, Synchronous Rectification
• Rating
• Catalog
• Regulated outputs (#)
• 2
• Control mode
• Current Mode
• Duty cycle (Max) (%)
• 85

TPS54291的完整型号有：TPS54291PWP、TPS54291PWPR，以下是这些产品的关键参数及官网采购报价：

TPS54291PWP，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TPS54291PWP的批量USD价格：2.112（1000+）

TPS54291PWPR，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TPS54291PWPR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 (...)

TPS54291 Unencrypted PSpice Transient Model Package (Rev. A)

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