THX203H PDF даташит
Спецификация THX203H изготовлена «JINRUI TECHNOLOGIES» и имеет функцию, называемую «High Performance Current Mode PWM Switching Power Supply Controller». |
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Детали детали
Номер произв | THX203H |
Описание | High Performance Current Mode PWM Switching Power Supply Controller |
Производители | JINRUI TECHNOLOGIES |
логотип |
9 Pages
No Preview Available ! |
深圳市劲锐科技有限公司
SHENZHEN JINRUI TECHNOLOGIES CO., LTD.
TEL:0755-83088967 83088481
FAX:0755-83088481
THX203HMail: [email protected]
高性能电流模式 PWM 开关电源控制器
概述
特点
高性能电流模式 PWM 控制器。专为高性价比
AC/DC 转换器设计。在 85V-265V 的宽电压范围
内提供高达 12W 的连续输出功率,峰值输出功率
更可达 18W。优化的高合理性的电路设计结合高性
能价格比的双极型制作工艺,最大程度上节约了产
品的整体成本。该电源控制器可工作于典型的反激
电路拓扑,构成简洁的 AC/DC 转换器。IC 内部的
启动电路被设计成一种独特的电流吸入方式,可利
用功率开关管本身的放大作用完成启动,这显著地
降低了启动电阻的功率消耗;而在输出功率较小时
IC 将自动降低工作频率,从而实现了极低的待机
功耗。在功率管截止时,内部电路将功率管反向偏
置,直接利用了双极性晶体管的 CB 高耐压特性,
大幅提高功率管的耐电压能力直到 850V 的高压,
这保证了功率管的安全。IC 内部还提供了完善的
防过载防饱和功能,可实时防范过载、变压器饱和、
输出短路等异常状况,提高了电源的可靠性。电流
限制及时钟频率可由外部器件进行设定。现可提供
满足欧洲标准的环保无铅 DIP8 封装。
内置 850V 高压功率开关管,极少的外围
器件.
锁存脉宽调制,逐脉冲限流检测.
低输出降频功能,无输出功耗可低于 0.3W.
内建斜坡与反馈补偿功能.
独立上限电流检测控制器,实时处理控制
器的过流、过载.
关断周期发射极偏压输出,提高了功率管
的耐压
内置具有温度补偿的电流限制电阻,精确
电流限制.
内置热保护电路
利用开关功率管的放大作用完成启动,启
动电阻的功耗减少 10 倍以上
低启动和工作电流
VCC 过压自动限制
宽电压连续输出功率可达 12W, 峰值输出
功率可达 18W
应用领域
适配器 ADAPTOR (如旅行充电器、外置
电源盒等)
开放式电源 OPENFRAME (如 DVD、
DVB 等)
管脚图
Rev. 2.0B
深圳市福田区新闻路景苑大厦 A 座 602 室
1
www.jinrui-tech.com
No Preview Available ! |
引脚功能描述
深圳市劲锐科技有限公司
SHENZHEN JINRUI TECHNOLOGIES CO., LTD.
TEL:0755-83088967 83088481
FAX:0755-83088481
THX203HMail: [email protected]
管脚
1
2
3
4
5
6
7,8
符号
管脚定义描述
OB 功率管基极,启动电流输入,外接启动电阻
VCC 供电脚
GND 接地脚
CT 振荡电容脚,外接定时电容
FB 反馈脚
IS 开关电流取样与限制设定,外接电流取样电阻
OC 输出脚,接开关变压器
注:PCB Layout 时应将 Pin6 与 Pin7 之间保留 1mm 以上的安全距离,避免产生放电现象。
内部电路方框图
Rev. 2.0B
深圳市福田区新闻路景苑大厦 A 座 602 室
2
www.jinrui-tech.com
No Preview Available ! |
深圳市劲锐科技有限公司
SHENZHEN JINRUI TECHNOLOGIES CO., LTD.
TEL:0755-83088967 83088481
FAX:0755-83088481
THX203HMail: [email protected]
绝对最大额定值
供电电压 VCC ···················································································································· 18V
引脚输入电压 ········································································································ VCC+0.3V
OC 集电极承受电压··································································································-0.3-850V
峰值开关电流 ··················································································································800mA
总耗散功率 ···················································································································1000mW
工作温度范围 ·········································································································· 0---+80℃
储存温度范围 ·······································································································-55---+150℃
焊接温度················································································································+260℃,10S
推荐工作条件
项目
供电电压,VCC
引脚输入电压
峰值反向电压
峰值开关电流
定时电容
振荡频率
工作温度
最小
4.8
-0.3
-
-
650
45
0
典型
5.5
-
-
-
680
61
最大
10.0
Vcc
550
600
920
65
100
单位
V
V
V
mA
PF
KHz
℃
Rev. 2.0B
深圳市福田区新闻路景苑大厦 A 座 602 室
3
www.jinrui-tech.com
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Номер в каталоге | Описание | Производители |
THX203 | High Performance Current Mode PWM Switching Power Supply | AMS |
THX203H | Switching power supply controller IC | TongHuaXin |
THX203H | Switching Power Controller IC | ETC |
THX203H | High Performance Current Mode PWM Switching Power Supply Controller | JINRUI TECHNOLOGIES |
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