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GR8937L PDF预览

GR8937L

更新时间: 2024-11-22 01:13:07
品牌 Logo 应用领域
绿芯 - GRENERGY /
页数 文件大小 规格书
9页 321K
描述
Current Mode PWM Power Switch

GR8937L 数据手册

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Preliminary GR8937L  
Current Mode PWM Power Switch  
Features  
Description  
Current mode PWM  
GR8937L integrates a PWM controller and high  
voltage power MOSFET of 650V. GR8937L has  
the features of very low startup current and current  
mode PWM control with green-mode function at  
light load. These features enable the power supply  
to easily meet even the strictest power conservation  
requirements. The integrated functions of GR8937L  
also include the leading-edge blanking of the current  
sensing, internal slope compensation, cycle-by-  
-cycle peak current limiting and soft start. OCP,  
OVP and OLP provide protection performance for  
fault conditions. To protect the power MOSFET from  
being damaged by supply over voltage, the internal  
gate voltage of GR8937L is clamped at 15V  
GR8937L improves the performance and reduces  
the cost of power supplies.  
Very low startup current  
Under-voltage lockout (UVLO)  
Non-audible-noise green-mode control  
Fixed switching frequency of 65KHz  
Cycle-by-cycle peak current limiting  
Internal leading-edge blanking  
Internal slope compensation  
Less than 0.1w of power saving  
Over-voltage protection (OVP) on VCC Pin  
Over-load protection (OLP)  
Applications  
Switching AC/DC power battery charger  
Digital camera  
Open-frame SMPS  
PDA power supply  
Ordering and Marking Information  
DIP-8  
9
Grenergy OPTO Inc. reserves the right to make changes to improve reliability or manufacture ability without  
notice, and advise customers to obtain the latest version of relevant information to verify before placing  
orders.  
2010.11 Ver. A Copyright Grenergy OPTO, Inc. www.grenergy-ic.com  
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