产品概述

描述

L4985是一款用于升压转换器的峰值电流模式PFC控制器，采用专有的乘法器“模拟器”，除了创新型THD优化器，还保证在所有工条件下具有非常低的总谐波失真（THD）性能。该器件采用引脚SO封装，在符合EN61000-3-2和JEIDA-MITI标准的应用中为以CCM模式运行的升压PFC预调节器提供高性能/低组件数的解决方案，功率范围从几百瓦到几千瓦。由于采用专有的关断时间调制器，该器件能够在所有工作条件下以准固定频率运行。提供两个选项：A为65 kHz，B为130 kHz。
800V高压启动功能块还包括用于将EMI滤波器的X电容降低到安全水平的电路。这使得该装置能够满足安全规定（如IEC 61010-1或IEC 62368-1），而无需使用传统的放电电阻（与电容器并联）。
该器件具有低能耗和禁用功能，可以应用于符合能源之星、美国能源部（DoE）、欧洲行为准则、欧盟生态设计指令，以及其他指导方针发布的最新节能要求的应用。
除了能够在瞬态条件下控制输出电压的过电压保护，集成电路还针对反馈回路故障或错误设置和升压电感饱和，提供保护措施。欠压保护功能支持根据IEC 60601-1-2的最新规定设计医疗器械，该规定要求在电源骤降持续时间达500毫秒的情况下进行输出调节。软启动限制峰值电流。
图腾柱输出级提供0.7 A供电电流和1.5 A受电电流，适合大型MOSFET或IGBT驱动。

所有功能
峰值电流模式，以CCM模式运行

800 V高压启动，具有集成的输入电压感应

有源输入滤波电容放电

专有乘法器“模拟器”，在所有工作条件（CCM和 DCM）下的最小线电流THD

精简的外部组件

保护：反馈回路故障、OVP、OCP、电感饱和、过压、欠压（符合医疗SMPS标准）

电感电流感应
禁用和低功耗功能

浪涌电流监测

通过软启动实现平滑的启动

1.2%（@ Tj = 25 °C）内部参考电压

65 kHz（A版本）和130 kHz（(B版本）开关频率

SO8封装
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	产品型号	状态	描述	类型	供应商
Worldwide,Asia,Europe,Africa,North America,South America,Oceania,Afghanistan,Bahrain,Bangladesh,Bhutan,Brunei,Burma (Myanmar),Cambodia,China,East Timor,India,Indonesia,Iraq,Japan,Jordan,Kazakhstan,Kuwait,Kyrgyzstan,Laos,Malaysia,Maldives,Mongolia,Nepal,Oman,Pakistan,Philippines,Qatar,Russian Federation,Saudi Arabia,Singapore,South Korea,Sri Lanka,Taiwan,Tajikistan,Thailand,Turkmenistan,United Arab Emirates,Uzbekistan,Vietnam,Yemen,Albania,Andorra,Armenia,Austria,Azerbaijan,Belarus,Belgium,Bosnia and Herzegovina,Bulgaria,Croatia,Cyprus,Czech Republic,Denmark,Estonia,Finland,France,Georgia,Germany,Greece,Hungary,Iceland,Ireland,Israel,Italy,Latvia,Liechtenstein,Lithuania,Luxembourg,Macedonia,Malta,Moldova,Monaco,Montenegro,Netherlands,Norway,Poland,Portugal,Romania,San Marino,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,Turkey,Ukraine,United Kingdom,Vatican City,Algeria,Angola,Benin,Botswana,Burkina,Burundi,Cameroon,Cape Verde,Central African Republic,Chad,Comoros,Democratic Republic of Congo,Djibouti,Egypt,Equatorial Guinea,Eritrea,Ethiopia,Gabon,Gambia,Ghana,Guinea,Guinea-Bissau,Ivory Coast,Kenya,Lesotho,Liberia,Libya,Madagascar,Malawi,Mali,Mauritania,Mauritius,Morocco,Mozambique,Namibia,Niger,Nigeria,Rwanda,Sao Tome and Principe,Senegal,Seychelles,Sierra Leone,Somalia,South Africa,Swaziland,Tanzania,Togo,Tunisia,Uganda,Zambia,Zimbabwe,Antigua and Barbuda,Bahamas,Barbados,Belize,Canada,Costa Rica,Dominica,Dominican Republic,El Salvador,Grenada,Guatemala,Haiti,Honduras,Jamaica,Mexico,Nicaragua,Panama,Saint Kitts and Nevis,Saint Lucia,Saint Vincent and the Grenadines,Trinidad and Tobago,United States,Argentina,Bolivia,Brazil,Chile,Colombia,Ecuador,Guyana,Paraguay,Peru,Suriname,Uruguay,Venezuela,Australia,Fiji,Kiribati,Marshall Islands,Micronesia,Nauru,New Zealand,Palau,Papua New Guinea,Samoa,Solomon Islands,Tonga,Tuvalu,Vanuatu	EVL400W-80PL	批量生产	12 V - 400 W adapter based on L4985A, L6699 and SRK2001	AC-DC Converter	ST	EVL400W-80PL 描述: 12 V - 400 W adapter based on L4985A, L6699 and SRK2001
Worldwide,Asia,Europe,Africa,North America,South America,Oceania,Afghanistan,Bahrain,Bangladesh,Bhutan,Brunei,Burma (Myanmar),Cambodia,China,East Timor,India,Indonesia,Iraq,Japan,Jordan,Kazakhstan,Kuwait,Kyrgyzstan,Laos,Malaysia,Maldives,Mongolia,Nepal,Oman,Pakistan,Philippines,Qatar,Russian Federation,Saudi Arabia,Singapore,South Korea,Sri Lanka,Taiwan,Tajikistan,Thailand,Turkmenistan,United Arab Emirates,Uzbekistan,Vietnam,Yemen,Albania,Andorra,Armenia,Austria,Azerbaijan,Belarus,Belgium,Bosnia and Herzegovina,Bulgaria,Croatia,Cyprus,Czech Republic,Denmark,Estonia,Finland,France,Georgia,Germany,Greece,Hungary,Iceland,Ireland,Israel,Italy,Latvia,Liechtenstein,Lithuania,Luxembourg,Macedonia,Malta,Moldova,Monaco,Montenegro,Netherlands,Norway,Poland,Portugal,Romania,San Marino,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,Turkey,Ukraine,United Kingdom,Vatican City,Algeria,Angola,Benin,Botswana,Burkina,Burundi,Cameroon,Cape Verde,Central African Republic,Chad,Comoros,Democratic Republic of Congo,Djibouti,Egypt,Equatorial Guinea,Eritrea,Ethiopia,Gabon,Gambia,Ghana,Guinea,Guinea-Bissau,Ivory Coast,Kenya,Lesotho,Liberia,Libya,Madagascar,Malawi,Mali,Mauritania,Mauritius,Morocco,Mozambique,Namibia,Niger,Nigeria,Rwanda,Sao Tome and Principe,Senegal,Seychelles,Sierra Leone,Somalia,South Africa,Swaziland,Tanzania,Togo,Tunisia,Uganda,Zambia,Zimbabwe,Antigua and Barbuda,Bahamas,Barbados,Belize,Canada,Costa Rica,Dominica,Dominican Republic,El Salvador,Grenada,Guatemala,Haiti,Honduras,Jamaica,Mexico,Nicaragua,Panama,Saint Kitts and Nevis,Saint Lucia,Saint Vincent and the Grenadines,Trinidad and Tobago,United States,Argentina,Bolivia,Brazil,Chile,Colombia,Ecuador,Guyana,Paraguay,Peru,Suriname,Uruguay,Venezuela,Australia,Fiji,Kiribati,Marshall Islands,Micronesia,Nauru,New Zealand,Palau,Papua New Guinea,Samoa,Solomon Islands,Tonga,Tuvalu,Vanuatu	EVL4985-350W	批量生产	Low-THD 350W CCM-PFC pre-regulator based on L4985	AC-DC Converter	ST	EVL4985-350W 描述: Low-THD 350W CCM-PFC pre-regulator based on L4985

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	Resource title	版本	Latest update

产品规格 (1)

	Resource title	版本	Latest update
PDF	DS13769 CCM PFC controller with High Voltage start-up	3.0	12 Jan 2022	12 Jan 2022 DS13769 CCM PFC controller with High Voltage start-up 3.0

应用手册 (2)

	Resource title	版本	Latest update
PDF	AN5749 How to design a CCM PFC pre-regulator based on L4985/L4986	1.0	01 Dec 2021	01 Dec 2021 AN5749 How to design a CCM PFC pre-regulator based on L4985/L4986 1.0
PDF	AN5734 Low-THD 350W CCM PFC pre-regulator based on L4985	1.3	02 Aug 2022	02 Aug 2022 AN5734 Low-THD 350W CCM PFC pre-regulator based on L4985 1.3

工具/软件相关的应用笔记 (2)

	Resource title	版本	Latest update
PDF	AN5824 12 V - 400 W adapter based on L4985A, L6699 and SRK2001	1.0	30 Jun 2022	30 Jun 2022 AN5824 12 V - 400 W adapter based on L4985A, L6699 and SRK2001 1.0
PDF	AN5734 Low-THD 350W CCM PFC pre-regulator based on L4985	1.3	02 Aug 2022	02 Aug 2022 AN5734 Low-THD 350W CCM PFC pre-regulator based on L4985 1.3

简报 (1)

	Resource title	版本	Latest update
PDF	Power Factor Corrector controllers portfolio		31 Mar 2021	31 Mar 2021 Power Factor Corrector controllers portfolio

EDA符号、封装和3D模型

质量与可靠性

产品型号	Marketing Status	封装	等级规格	符合RoHS级别	材料声明**
L4985A	批量生产	SO-8	工业	Ecopack3	PDF XML
L4985ATR	批量生产	SO-8	工业	Ecopack3	PDF XML
L4985B	批量生产	SO-8	工业	Ecopack3
L4985BTR	批量生产	SO-8	工业	Ecopack3