4.5 V to 42 V Input, 5 A, Step Down DC-DC Converter with Eco-mode?

文件：2.02115 Mbytes 頁數(shù)：38 Pages

TI

德州儀器

具有 Eco-Mode 的 42V、5A 降壓直流/直流轉(zhuǎn)換器

TPS54540 是一款 42V，5A，降壓穩(wěn)壓器，此穩(wěn)壓器具有一個集成的高側(cè) MOSFET。按照 ISO 7637 標(biāo)準(zhǔn)，此器件能夠耐受高達(dá) 45V 的拋負(fù)載脈沖。電流模式控制提供了簡單的外部補(bǔ)償和靈活的組件選擇。一個低紋波脈沖跳躍模式將無負(fù)載時的電源電流減小至 146μA。當(dāng)啟用引腳被拉至低電平時，關(guān)斷電源電流被減少至 2μA。\n\n欠壓閉鎖在內(nèi)部設(shè)定為 4.3V，但可用使能引腳將之提高。輸出電壓啟動斜升由內(nèi)部控制以提供一個受控的啟動并且消除過沖。 \n\n寬開關(guān)頻率范圍可實現(xiàn)對效率或者外部組件尺寸的優(yōu)化。輸出電流是受限的逐周期電流。頻率折返和熱關(guān)斷在過載條件下保護(hù)內(nèi)部和外部組件。\n\ ? 輕負(fù)載條件下使用脈沖跳躍實現(xiàn)的高效率 Eco-mode。?\n? 92mΩ 高側(cè)金屬氧化物半導(dǎo)體場效應(yīng)晶體管 (MOSFET)\n? 146μA 靜態(tài)運行電流和2μA 關(guān)斷電流\n? 100kHz 至 2.5MHz 的固定開關(guān)頻率\n? 同步至外部時鐘\n? 輕負(fù)載條件下使用集成型引導(dǎo) (BOOT) 再充電場效應(yīng)晶體管 (FET) 實現(xiàn)的低壓降\n? 可調(diào)欠壓閉鎖 (UVLO) 電壓和滯后\n? 0.8V 1% 內(nèi)部電壓基準(zhǔn)\n? 8 引腳 HSOP，帶有 PowerPAD?的封裝\n? -40°C 至 150°C TJ 運行范圍\n? 使用 TPS54540 并借助 WEBENC;

TI

德州儀器

TPS54540 4.5-V to 42-V Input, 5 A, Step Down DC-DC Converter with Eco-mode?

1 Features 1? High Efficiency at Light Loads with Pulse Skipping Eco-mode? ? 92-mΩ High-Side MOSFET ? 146 μA Operating Quiescent Current and 2 μA Shutdown Current ? 100 kHz to 2.5 MHz Fixed Switching Frequency ? Synchronizes to External Clock ? Low Dropout at Light Loads with Integrated BO

文件：3.02732 Mbytes 頁數(shù)：50 Pages

TI

德州儀器

TPS54540 4.5-V to 42-V Input, 5 A, Step Down DC-DC Converter with Eco-mode?

1 Features 1? High Efficiency at Light Loads with Pulse Skipping Eco-mode? ? 92-mΩ High-Side MOSFET ? 146 μA Operating Quiescent Current and 2 μA Shutdown Current ? 100 kHz to 2.5 MHz Fixed Switching Frequency ? Synchronizes to External Clock ? Low Dropout at Light Loads with Integrated BO

文件：3.02732 Mbytes 頁數(shù)：50 Pages

TI

德州儀器

TPS54540 4.5-V to 42-V Input, 5 A, Step Down DC-DC Converter with Eco-mode?

1 Features 1? High Efficiency at Light Loads with Pulse Skipping Eco-mode? ? 92-mΩ High-Side MOSFET ? 146 μA Operating Quiescent Current and 2 μA Shutdown Current ? 100 kHz to 2.5 MHz Fixed Switching Frequency ? Synchronizes to External Clock ? Low Dropout at Light Loads with Integrated BO

文件：3.02732 Mbytes 頁數(shù)：50 Pages

TI

德州儀器

TPS54540 4.5-V to 42-V Input, 5 A, Step Down DC-DC Converter with Eco-mode?

1 Features 1? High Efficiency at Light Loads with Pulse Skipping Eco-mode? ? 92-mΩ High-Side MOSFET ? 146 μA Operating Quiescent Current and 2 μA Shutdown Current ? 100 kHz to 2.5 MHz Fixed Switching Frequency ? Synchronizes to External Clock ? Low Dropout at Light Loads with Integrated BO

文件：3.02732 Mbytes 頁數(shù)：50 Pages

TI

德州儀器

TPS54540 4.5-V to 42-V Input, 5 A, Step Down DC-DC Converter with Eco-mode?

1 Features 1? High Efficiency at Light Loads with Pulse Skipping Eco-mode? ? 92-mΩ High-Side MOSFET ? 146 μA Operating Quiescent Current and 2 μA Shutdown Current ? 100 kHz to 2.5 MHz Fixed Switching Frequency ? Synchronizes to External Clock ? Low Dropout at Light Loads with Integrated BO

文件：3.02732 Mbytes 頁數(shù)：50 Pages

TI

德州儀器

TPS54540 4.5-V to 42-V Input, 5 A, Step Down DC-DC Converter with Eco-mode?

1 Features 1? High Efficiency at Light Loads with Pulse Skipping Eco-mode? ? 92-mΩ High-Side MOSFET ? 146 μA Operating Quiescent Current and 2 μA Shutdown Current ? 100 kHz to 2.5 MHz Fixed Switching Frequency ? Synchronizes to External Clock ? Low Dropout at Light Loads with Integrated BO

文件：3.02732 Mbytes 頁數(shù)：50 Pages

TI

德州儀器

TPS54540 4.5-V to 42-V Input, 5 A, Step Down DC-DC Converter with Eco-mode?

1 Features 1? High Efficiency at Light Loads with Pulse Skipping Eco-mode? ? 92-mΩ High-Side MOSFET ? 146 μA Operating Quiescent Current and 2 μA Shutdown Current ? 100 kHz to 2.5 MHz Fixed Switching Frequency ? Synchronizes to External Clock ? Low Dropout at Light Loads with Integrated BO

文件：3.02732 Mbytes 頁數(shù)：50 Pages

TI

德州儀器

TPS54540 4.5 V to 42 V Input, 5 A, Step Down DC-DC Converter with Eco-mode?

文件：2.55522 Mbytes 頁數(shù)：46 Pages

TI

德州儀器