基于 TPS560430的具有高效睡眠模式的 SIMPLE SWITCHER® 36V 600mA 降压稳压器

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基于 TPS560430的具有高效睡眠模式的 SIMPLE SWITCHER® 36V 600mA 降压稳压器

　　1 Features

　　Configured for Rugged Industrial Applications

　　Input Voltage Range: 4 V to 36 V

　　600-mA Continuous Output Current

　　Minimum Switching-On Time: 60 ns

　　98% Maximum Duty Cycle

　　Support Startup with Pre-Biased Output

　　Short Circuit Protection with Hiccup Mode

　　±1.5% Tolerance Voltage Reference over Temperature from –40°C to 125°C

　　Precision Enable

　　Small Solution Size and Ease of Use

　　Integrated Synchronous Rectification

　　Internal Compensation for Ease of Use

　　SOT-23-6 Package

　　Various Options in Pin-to-Pin Compatible Package

　　1.1-MHz and 2.1-MHz Frequency Options

　　PFM and Forced PWM (FPWM) Options

　　Fixed 3.3-V Output Option

　　2 Applications

　　Grid Infrastructure: Advanced Metering Infrastructure

　　Motor Drive: AC Inverters, VF Drives, Servos, Field Actuators

　　Factory and Building Automation: PLC, Industrial PC, Elevator Control, HVAC Control

　　Aftermarket Automotive: Camera

　　General Purpose Wide VIN Power Supplies

　　3 Description

　　The TPS560430 is an easy to use synchronous step-down DC-DC converter capable of driving up to 600-mA load current. With a wide input range of 4 V to 36 V, the device is suitable for a wide range of applications from industrial to automotive for power conditioning from an unregulated source.

　　The TPS560430 has 1.1-MHz and 2.1-MHz operating frequency versions for either high efficiency or small solution size. The TPS560430 also has FPWM (forced PWM) version to achieve constant frequency and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally which allows the device to be used with minimum external components.

　　The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The TPS560430 is available in SOT-23-6 package.

　　The TPS560430 regulator is an easy to use synchronous step-down DC-DC converter operating from 4-V to 36-V supply voltage. It is capable of delivering up to 600-mA DC load current in a very small solution size. The family has multiple versions applicable to various applications, refer to Device Comparison Table for detailed information.

　　The TPS560430 employs fixed-frequency peak-current mode control. The device enters PFM Mode at light load to achieve high efficiency for PFM version. And FPWM version is provided to achieve low output voltage ripple, tight output voltage regulation, and constant switching frequency at light load. The device is internally compensated, which reduces design time, and requires few external components.

　　Additional features such as precision enable and internal soft-start provide a flexible and easy to use solution for a wide range of applications. Protection features include thermal shutdown, VIN under-voltage lockout, cycle-by-cycle current limit, and hiccup mode short-circuit protection.

The family requires very few external components and has a pin-out designed for simple, optimum PCB layout.

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