原标题：TI TPS54060 60V 0.5A降压电源解决方案

       TI公司的tps54060 是60V 0.5A降压电源稳压器.它集成了200-m高边MOSFET,电流模式控制提供简单的外部补偿和灵活的元件选择,输入电压3.5V-60V,开关频率100kHz到2.5MHz,工作时的静态电流 116uA,关断电流1.3uA,主要用在12-V, 24-V和48-V工业于商用低功耗系统,视频和GPS,娱乐设备等.本文介绍了TPS54060主要特性, 功能方框图, 带可调UVLO的高频3.3V输出等多种应用电路以及TPS54060EVM-590评估模块性能指标,电路图和材料清单.

　　The TPS54060 device is a 60V, 0.5A, step down regulator with an integrated high side MOSFET. Current mode control provides simple external compensation and flexible component selection. A low ripple pulse skip mode reduces the no load, regulated output supply current to 116µA. Using the enable pin, shutdown supply current is reduced to 1.3µA, when the enable pin is low.

　　Under voltage lockout is internally set at 2.5V, but can be increased using the enable pin. The output voltage startup ramp is controlled by the slow start pin that can also be configured for sequencing/tracking. An open drain power good signal indicates the output is within 93% to 107% of its nominal voltage.

　　A wide switching frequency range allows efficiency and external component size to be optimized.

　　TPS54060主要特性:

　　3.5V to 60V Input Voltage Range

200-m High-Side MOSFET

　　High Efficiency at Light Loads with a Pulse Skipping Eco-Mode™

　　116µA Operating Quiescent Current

　　1.3µA Shutdown Current

　　100kHz to 2.5MHz Switching Frequency

　　Synchronizes to External Clock

　　Adjustable Slow Start/Sequencing

　　UV and OV Power Good Output

　　Adjustable UVLO Voltage and Hysteresis

　　0.8-V Internal Voltage Reference

　　MSOP10 and 3mm × 3mm SON Package With PowerPAD™

　　Supported by SwitcherPro™ Software Tool

　　TPS54060应用:

　　12-V, 24-V and 48-V Industrial and Commercial Low Power Systems

　　Aftermarket Auto Accessories: Video, GPS, Entertainment

　　图1.TPS54060功能方框图

　　图2.TPS54060带可调UVLO的高频3.3V输出电源电路图

　　图3.TPS54060 PCB布局例图

　　图4.TPS54060反向电源电路图

　　图5.TPS54060分离电源电路图

　　TPS54060EVM-590评估模块

　　The TPS54060 DC/DC converter is designed to provide up to a 0.5-A output from an input voltage source of 3.5V to 60V. Rated input voltage and output current range for the TPS54060EVM-590 evaluation module are given in Table 1 of the User Guide. This evaluation module is designed to demonstrate transformer-coupled split rail operation with dual outputs providing ±18V at up to ±100mA. The -18V output is used as the ground reference for the TPS54060 in this application, which allows the sum of the positive and negative outputs to be divided and sent to the VSNS pin for regulation. The switching frequency is externally set to 300kHz with a resistor at the RT/CLK pin, and the compensation components are also external to the integrated circuit (IC). The high-side MOSFET is incorporated inside the TPS54060 package along with the gate drive circuitry. The low drain-to-source on-resistance of the MOSFET allows the TPS54060 to achieve high efficiency and helps keep the junction temperature low at high output currents. Additionally, the TPS54060 provides adjustable slow start and undervoltage lockout inputs.

　　TPS54060EVM-590评估模块性能指标:

　　图6.TPS54060EVM-590评估模块外形图

　　图7.TPS54060EVM-590评估模块电路图

　　TPS54060EVM-590评估模块材料清单: