4.5-V to 42-V Input, 5-A Step-Down DC-DC Converter With Soft-Start and Eco-mode

文件：2.92495 Mbytes 页数：48 Pages

TI

德州仪器

具有软启动和 Eco-mode™ 的 4.5V 至 42V 输入 5A 降压直流/直流转换器

TPS54541 器件是一款 42V 5A 降压型稳压器，此稳压器具有一个集成型高侧 MOSFET。按照 ISO 7637 标准，此器件能够耐受高达 45V 的抛负载脉冲。电流模式控制提供了简单的外部补偿和灵活的组件选择。一个低纹波脉冲跳跃模式将无负载输出电源电流减小至 152µA。使能引脚下拉为低电平后，关断电源电流降至 2µA。\n\n欠压闭锁在内部设定为 4.3V，但可用一个使能引脚上的外部电阻分压器将之提高。输出电压启动斜坡受控于软启动引脚，该引脚还可被配置用来控制电源排序和跟踪。一个开漏电源正常信号表示输出处于标称电压值的 93% 至 106% 之内。 \n\n宽可调 • 轻负载条件下使用脉冲跳跃实现的高效率 Eco-mode。™ \n• 87mΩ 高侧金属氧化物半导体场效应晶体管 (MOSFET)\n• 152µA 静态运行电流和 2µA 关断电流\n• 100kHz 至 2.5MHz 可调开关频率\n• 同步至外部时钟\n• 轻负载条件下使用集成型引导 (BOOT) 再充电场效应晶体管 (FET) 实现的低压降\n• 可调欠压闭锁 (UVLO) 电压和滞后\n• 欠压 (UV) 和过压 (OV) 电源正常输出\n• 可调软启动和定序\n• 0.8V 1% 内部电压基准\n• 带有散热焊盘的 10 引脚晶圆级小外形无引线 (WSON) 封装\n• ;

TI

德州仪器

TPS54541 4.5-V to 42-V Input, 5-A Step-Down DC-DC Converter With Soft-Start and Eco-mode™

1 Features 1• High Efficiency at Light Loads with Pulse Skipping Eco-mode™ • 87-mΩ High-Side MOSFET • 152-μA Operating Quiescent Current and 2-μA Shutdown Current • 100-kHz to 2.5-MHz Adjustable Switching Frequency • Synchronizes to External Clock • Low Dropout at Light Loads with Integra

文件：3.07337 Mbytes 页数：53 Pages

TI

德州仪器

TPS54541 4.5-V to 42-V Input, 5-A Step-Down DC-DC Converter With Soft-Start and Eco-mode™

1 Features 1• High Efficiency at Light Loads with Pulse Skipping Eco-mode™ • 87-mΩ High-Side MOSFET • 152-μA Operating Quiescent Current and 2-μA Shutdown Current • 100-kHz to 2.5-MHz Adjustable Switching Frequency • Synchronizes to External Clock • Low Dropout at Light Loads with Integra

文件：3.07337 Mbytes 页数：53 Pages

TI

德州仪器

TPS54541 4.5-V to 42-V Input, 5-A Step-Down DC-DC Converter With Soft-Start and Eco-mode™

1 Features 1• High Efficiency at Light Loads with Pulse Skipping Eco-mode™ • 87-mΩ High-Side MOSFET • 152-μA Operating Quiescent Current and 2-μA Shutdown Current • 100-kHz to 2.5-MHz Adjustable Switching Frequency • Synchronizes to External Clock • Low Dropout at Light Loads with Integra

文件：3.07337 Mbytes 页数：53 Pages

TI

德州仪器

TPS54541 4.5-V to 42-V Input, 5-A Step-Down DC-DC Converter With Soft-Start and Eco-mode™

1 Features 1• High Efficiency at Light Loads with Pulse Skipping Eco-mode™ • 87-mΩ High-Side MOSFET • 152-μA Operating Quiescent Current and 2-μA Shutdown Current • 100-kHz to 2.5-MHz Adjustable Switching Frequency • Synchronizes to External Clock • Low Dropout at Light Loads with Integra

文件：3.07337 Mbytes 页数：53 Pages

TI

德州仪器

TPS54541 4.5-V to 42-V Input, 5-A Step-Down DC-DC Converter With Soft-Start and Eco-mode™

1 Features 1• High Efficiency at Light Loads with Pulse Skipping Eco-mode™ • 87-mΩ High-Side MOSFET • 152-μA Operating Quiescent Current and 2-μA Shutdown Current • 100-kHz to 2.5-MHz Adjustable Switching Frequency • Synchronizes to External Clock • Low Dropout at Light Loads with Integra

文件：3.07337 Mbytes 页数：53 Pages

TI

德州仪器

TPS54541 4.5-V to 42-V Input, 5-A Step-Down DC-DC Converter With Soft-Start and Eco-mode™

1 Features 1• High Efficiency at Light Loads with Pulse Skipping Eco-mode™ • 87-mΩ High-Side MOSFET • 152-μA Operating Quiescent Current and 2-μA Shutdown Current • 100-kHz to 2.5-MHz Adjustable Switching Frequency • Synchronizes to External Clock • Low Dropout at Light Loads with Integra

文件：3.07337 Mbytes 页数：53 Pages

TI

德州仪器

TPS54541 4.5-V to 42-V Input, 5-A Step-Down DC-DC Converter With Soft-Start and Eco-mode™

1 Features 1• High Efficiency at Light Loads with Pulse Skipping Eco-mode™ • 87-mΩ High-Side MOSFET • 152-μA Operating Quiescent Current and 2-μA Shutdown Current • 100-kHz to 2.5-MHz Adjustable Switching Frequency • Synchronizes to External Clock • Low Dropout at Light Loads with Integra

文件：3.07337 Mbytes 页数：53 Pages

TI

德州仪器

TPS54541 4.5-V to 42-V Input, 5-A Step-Down DC-DC Converter With Soft-Start and Eco-mode™

1 Features 1• High Efficiency at Light Loads with Pulse Skipping Eco-mode™ • 87-mΩ High-Side MOSFET • 152-μA Operating Quiescent Current and 2-μA Shutdown Current • 100-kHz to 2.5-MHz Adjustable Switching Frequency • Synchronizes to External Clock • Low Dropout at Light Loads with Integra

文件：3.07337 Mbytes 页数：53 Pages

TI

德州仪器