TPS55383中文资料具有外部补偿的 4.5V 至 28V 输入、双路 3A 输出、300kHz 降压转换器数据手册TI规格书

描述 Description

The TPS55383 and TPS55386 are dual output, non-synchronous buck converters capable of supporting 3-Aoutput 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 and soft start time, these converters provide many features with a minimum of external components. The outputs of the two error amplifiers are accessible allowing user optimization of the feedback loop under a wide range of output filter characteristics. 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 configured to allow either ratiometric or sequential startup sequencing. Additionally, the two outputsmay be powered from different sources.

特性 Features

• 4.5-V to 28-V Input Range
• Output Current Up to 3 A
• TPS55386: 600 kHz
• 0.8-V 1.75% Voltage Reference
• Dual PWM Outputs 180° Out-of-Phase
• Configurable as Dual Output or Two-Channel Single Output Multiphase for 6 amp Capability
• Current Mode Control with External Compensation
• Thermal Shutdown Protection at +148°C
• APPLICATIONS
• Digital TV
• Consumer Electronics
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