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What is EG1182?

This electronic component, produced by the manufacturer "EGmicro", performs the same function as "48V battery powered systems step-down switching power chip".


EG1182 Datasheet PDF - EGmicro

Part Number EG1182
Description 48V battery powered systems step-down switching power chip
Manufacturers EGmicro 
Logo EGmicro Logo 


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EG1182芯片数据手册
48V电池供电系统降压型开关电源芯片
2013 ©屹晶微电子有限公司 版权所有
REV 1.0

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EG1182 equivalent
上海屹晶微电子有限公司
4. 引脚
EG1182 芯片数据手册 V1.0
48V 电池供电系统降压型开关电源芯片
4.1. 引脚定义
876 5
IPK OUT FB ADJ
EG1182
Vin VCC CT GND
1234
4-1. EG1182 管脚定义
4.2. 引脚描述
引脚序号 引脚名称
1 Vin
2 Vcc
3 CT
4 GND
5 ADJ
6 FB
7 OUT
8 IPK
I/O
Power
Power
I
GND
I
I
O
I
描述
芯片高压电源输入端(20V-60V),供内部高压电路、驱动电路及功率管部分,
外接一个低频滤波电容和高频 0.1uF 旁路电容能减少输入纹波电压和降低芯
片输入端的高频噪声。
芯片低压部分工作电源,供内部低压电路,振荡器及运算放大器、比较器等,
该引脚内部有个大约 60K 启动电阻到 Vin 端,同时在 FB 端和 Vcc 端内建了一
个二极管,该脚工作电压来自 FB 引脚即 Buck 降压器的电压输出端,需外接
一个 4.7uF/25V 电容。
外接电容,设置振荡器工作频率范围 10KHz-100KHz,频率 f=(37.5 x106 )/CT
(单位为 pF)
芯片的地端。
输出电压调节端,内部误差放大器基准电压为 1.35V,外接两个分压电阻对输
出电压设定,输出电压 Vout=1+R1/R2*1.35VR1 为上拉到 FB 引脚的电
阻,R2 为下拉到 GND 的电阻。
输出电压反馈输入端,要求的反馈电压需≥5V
芯片功率晶体管输出端,需外接到电感和续流二极管端。
峰值电流设置端,该脚需通过一个电阻到 Vin 端,用于检测输出功率管输出电
流大小,一旦输出电流超过设定值 IPK =0.7/Rsense*84,芯片将降低 PWM 占空
比使输出电流限流在设定的最大值。
2010 © 上海屹晶微电子有限公司 版权所有
www.EGmicro.com
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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for EG1182 electronic component.


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