The TPS54383 and TPS54386 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, soft-start time, and control loop compensation, these converters provide many features with a minimum of external components. 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.

The outputs may be enabled independently, or may be configured to allow either ratio-metric or sequential startup sequencing. Additionally, the two outputs may be powered from different sources.

• 4.5-V to 28-V Input Range
• Output Voltage Range 0.8 V to 90% of Input Voltage
• Output Current Up to 3 A
• Two Fixed Switching Frequency Versions:
  • TPS54383: 300 kHz
  • TPS54386: 600 kHz
• Three Selectable Levels of Overcurrent Protection (Output 2)
• 0.8-V 1.5% Voltage Reference
• 2.1-ms Internal Soft-Start
• Dual PWM Outputs 180° Out-of-Phase
• Ratiometric or Sequential Startup Modes Selectable by a Single Pin
• 85-mΩ Internal High-Side MOSFETs
• Current Mode Control
• Internal Compensation
• Pulse-by-Pulse Overcurrent Protection
• Thermal Shutdown Protection at +148\xC2°C
• 14-Pin PowerPAD? HTSSOP package

• Vin (Min) (V)
• 4.5
• Vin (Max) (V)
• 28
• Vout (Min) (V)
• 0.8
• Vout (Max) (V)
• 25.2
• Iout (Max) (A)
• 3
• Iq (Typ) (uA)
• 1800
• Switching frequency (Min) (kHz)
• 600
• Switching frequency (Max) (kHz)
• 600
• Features
• Enable, Phase Interleaving
• Rating
• Catalog
• Regulated outputs (#)
• 2
• Control mode
• Current Mode
• Duty cycle (Max) (%)
• 85

TPS54386的完整型号有：TPS54386PWP、TPS54386PWPR，以下是这些产品的关键参数及官网采购报价：

TPS54386PWP，工作温度：-40 to 125，封装：HTSSOP (PWP)-14，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TPS54386PWP的批量USD价格：1.133（1000+）

TPS54386PWPR，工作温度：-40 to 125，封装：HTSSOP (PWP)-14，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TPS54386PWPR的批量USD价格：.944（1000+）

TPS54386EVM — TPS54386 13.2V 输入、双路 5V 和 3.3V 输出、2A 评估模块

The TPS54386EVM evaluation module (EVM) is a dual non-synchronous buck converter providing fixed 5.0-V and 3.3-V output at up to 2 A each from a 12-V input bus. The EVM is designed to start up from a single supply, so no additional bias voltage is required for start-up. The module uses the (...)

TPS54386 Unencrypted PSpice Transient Model Package (Rev. A)

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