The TPS51113 and TPS51163 are cost-optimized, feature rich, single-channel synchronous-buck controllers that operates from a single 4.5-V to 13.2-V supply and can convert an input voltage as low as 1.5 V.

The controller implements voltage mode control with a fixed 300-kHz (TPS51113) and 600-kHz (TPS51163) switching frequency. The overcurrent (OC) protection employs the low-side R_DS(on) current sensing and has user-programmable threshold. The OC threshold is set by the resistor from LDRV_OC pin to GND. The resistor value is read when the over-current programming circuit applies 10 µA of current to the LDRV_OC pin during the calibration phase of the start-up sequence.

The TPS51113/TPS51163 also supports output pre-biased startup.

The strong gate drivers with low deadtime allow for the utilization of larger MOSFETs to achieve higher efficiency. An adaptive anti-cross conduction scheme is used to prevent shoot-through between the power FETs.

• Flexible Power Rails: 5 V to 12 V
• Reference: 800 mV ± 0.8%
• Voltage Mode Control
• Support Pre-biased Startup
• Programmable Overcurrent Protection with Low-Side RDS(on) Current Sensing
• Fixed 300-kHz (TPS51113) and 600-kHz (TPS51163) Switching Frequency
• UV/OV Protections and Power Good Indicator
• Internal Soft-start
• Integrated High-Current Drivers Powered by VDD
• 10-Pin 3 × 3 SON Package
• APPLICATIONS
  • Server and Desktop Computer Subsystem Power Supplies (MCH, IOCH, PCI, Termination)
  • Distributed Power Supplies
  • General DC-DC Converters

• Vin (Min) (V)
• 4.5
• Vin (Max) (V)
• 13.2
• Vout (Min) (V)
• 0.8
• Vout (Max) (V)
• 8
• Iout (Max) (A)
• 20
• Iq (Typ) (uA)
• 6000
• Switching frequency (Min) (kHz)
• 300
• Switching frequency (Max) (kHz)
• 300
• Features
• Enable, Power Good, Pre-Bias Start-Up
• Regulated outputs (#)
• 1
• Number of phases
• 1
• Rating
• Catalog

TPS51113的完整型号有：TPS51113DRCR、TPS51113DRCT，以下是这些产品的关键参数及官网采购报价：

TPS51113DRCR，工作温度：-40 to 85，封装：VSON (DRC)-10，包装数量MPQ：3000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TPS51113DRCR的批量USD价格：.959（1000+）

TPS51113DRCT，工作温度：-40 to 85，封装：VSON (DRC)-10，包装数量MPQ：250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TPS51113DRCT的批量USD价格：1.119（1000+）

TPS51113 Unencrypted PSpice Transient Model Package (Rev. A)

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

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