TPS563212数据手册集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF

描述 Description

The TPS563212 is a cost-effective and highly flexible synchronous buck converter that provides selectable Eco-mode operation or FCCM (force continuous conduction mode) operation. A selectable power-good indicator or external soft start is also configurable through the MODE pin. Power sequencing is possible by correctly configuring the Enable pin, power-good indicator, or external soft start. A wide input voltage range of 4.2 V to 18 V supports a wide variety of common input rails like 12 V and 15 V. The device supports up to 3-A continuous output current at output voltages between 0.6 V and 7 V.

The device provides fast transient response with true fixed switching frequency through the use of the advanced emulated current mode (AECM) control topology. With internal smart loop bandwidth control, the device provides fast transient response over a wide output voltage range without the need for external compensation.

Cycle-by-cycle current limit on the high-side peak current protects the device in overload situations and is enhanced by a low-side valley current limit, which prevents current runaway. Hiccup mode would be triggered under overvoltage protection (OVP), undervoltage protection (UVP), UVLO protection, and thermal shutdown.

The device is available in a 1.6-mm × 2.1-mm SOT-5X3 package.

特性 Features

• 4.2-V to 18-V input voltage
• 0.6-V to 7-V output voltage
• Up to 3-A continuous output current
• 45-ns minimum switching on time
• 98% maximum duty cycle

• High efficiency
• Integrated 66-mΩ and 33-mΩ MOSFETs
• 120-µA typical quiescent current

• Highly flexible and easy to use
• Selectable Eco-mode or FCCM operation
• Selectable power-good indicator or external soft start
• Precise enable input

• High accuracy
• ±1% (25°C) reference voltage accuracy
• ±8.5% switching frequency tolerance

• Small solution size
• Internal compensation for ease of use
• SOT-5X3 package
• Minimum external components

• Cycle-by-cycle current limit for both high-side and low-side MOSFETs
• Non-latched OVP, UVP, UVLO, and TSD protections
• Create a custom design using TPS563212 with the WEBENCH Power Designer