MP157
数据手册
功率范围扩展的最小½积的高½效离线稳压器
功率范围扩展的最小½积的高½效离线稳压器
广州周立功单片机科技有限公司
地址：广州市天河北路
689
号光大银行大厦
12
楼
F4
½址：http://www.zlgmcu.com
广州周立功单片机科技有限公司
目 ½
MP157:功率范围扩展的最小½积的高½效离线稳压器 ···················1
··················
描述
··················································1
·················································
特性
··················································1
·················································
应用
··················································1
·················································
典型应用·
··············································2
··············································
订购信息·
··············································2
··············································
封装参考·
··············································2
··············································
绝对最大额定值
(1)
·········································2
········································
电气特性·
··············································3
··············································
典型特性·
··············································5
··············································
典型工½特性
··········································· 6
···········································
典型工½特性
··········································· 7
···········································
引脚功½·
··············································7
··············································
功½框图·
··············································8
··············································
工½
··················································8
·················································
1.14.1
启动和欠压闭锁
·······································8
······································
1.14.2
恒压工½·
···········································9
···········································
1.14.3
频率折返·
···········································9
···········································
1.14.4
最短断开时限
········································
·······································10
1.14.5 EA
补偿
············································
···········································10
1.14.6
斜坡补偿·
··········································10
···········································
1.14.7
过½½保护（OLP）
·····································11
·····································
1.14.8
短路保护（SCP）
·····································11
·····································
1.14.9
热关断（TSD）
·······································
······································11
1.14.10
开环检测·
··········································11
···········································
1.14.11
前沿消隐·
··········································11
···········································
1.15
应用信息·
·············································12
··············································
1.15.1
结构选择·
··········································12
···········································
1.16
元件的选取
············································12
············································
1.16.1
输入电容·
··········································12
···········································
1.16.2
电感
··············································13
··············································
1.16.3
续流二极管
·········································13
·········································
1.16.4
输出电容·
··········································14
···········································
1.16.5
反馈电阻·
··········································14
···········································
1.16.6
反馈电容·
··········································14
···········································
1.16.7
假负½½·
············································
············································14
1.16.8
辅助
Vcc
电源
········································
·······································14
1.16.9
浪涌性½·
··········································14
···········································
1.16.10
布线指南·
··········································15
···········································
1.16.11
设计示例·
··········································15
···········································
1.17
典型应用电路
···········································
··········································16
1.18
封装信息·
·············································17
··············································
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
1.10
1.11
1.12
1.13
1.14
MP157
数据手册
I
©2015 Guangzhou ZLGMCU Technology CO., LTD.
广州周立功单片机科技有限公司
MP157
数据手册
MP157:功率范围扩展的最小½积的高½效离线稳压器
1.1
描述
MP157
是一个初级侧稳压器，它提供精确的恒压（CV）调节，不带光耦合器。MP157 支
持降压、降压-升压、升压和反激拓扑结构。稳压器集成了一个
500V
的
MOSFET，结构简单，
成本½。这些特性½得
MP157
成为离线½功耗应用的理想解决方案。典型应用包括家电、备用
电源和工业控制。
MP157
是一个绿色环保模式工½的稳压器。½负½½降½时，峰值电流和开关频率跟随负½½
下降。因此，它在½½½下仍提供出色的½效，进而获得更½的平均效率。
MP157
带有各种保护，包括过热关断（TSD）
、VCC 欠压闭锁（UVLO）
、过½½保护（OLP）
、
短路保护（SCP）和开环保护。
MP157
采用
TSOT23-5
和
SOIC8
封装。
1.2
特性
初级侧恒压（CV）控制，支持降压、降压-升压、升压和反激拓扑结构；
集成的
500V/10 MOSFET；
<100mW
的空½½功耗；
高达
6W
的输出功率；
不连续导电模式（DCM）的最大输出电流小于
225mA，连续导电模式（CCM）的输
出电流小于
360mA；
½
V
CC
工½电流；
频率折返；
受限的最大频率；
峰值电流压缩；
内部高电压电流源；
内部
400ns
的前沿消隐；
热关断（自动重启）
；
带滞后的
VCC
欠压闭锁（UVLO）
；
基于定时器的过½½保护；
短路保护；
开环保护。
1.3
应用
家电、家用电器和消费类电子产品；
工业控制；
备用电源。
MP157
数据手册
1
©2015 Guangzhou ZLGMCU Technology CO., LTD.
广州周立功单片机科技有限公司
MP157
数据手册
1.4
典型应用
1.5
订购信息
器件型号*
MP157GJ
MP157GS
封装
TSOT23-5
SOIC8
顶部标识
AFC
MP157
*
带&卷封装添加后缀-Z（例如，MP157GJ-Z）
。
*
带&卷封装添加后缀-Z（例如，MP157GS-Z）
。
1.6
封装参考
1.7
绝对最大额定值
(1)
漏极到源极…………………………………………………………........................
-0.3V ~ 500V
所有其他引脚
........................................................................................................... -0.3V ~ 6.5V
连续功率消耗(T
A
= +25°
(2)
C)
TSOT23-5................................................................................................................................... 1W
SOIC8.......................................................................................................................................... 1W
结温……………………………………………………………………..................................150℃
引脚温度..................................................................................................................................260℃
存储温度.................................................................................................................
-60℃ ~ +150℃
ESD
½力的人½放电模式……………………………………………………………..........2.0kV
ESD
½力的机器放电模式………………………………………………………...................200V
MP157
数据手册
2
©2015 Guangzhou ZLGMCU Technology CO., LTD.
广州周立功单片机科技有限公司
MP157
数据手册
推荐的工½条件
(3)
工½结温(T
J
)…………………………………………………………………..… -40° ~ +125°
C
C
工½
VCC
范围
……................................................................................................. 4.45V ~ 4.6V
热电阻
(4)
θ
JA
θ
JC
TSOT23-5 ........................................................................................................... 100..... 55... °
C/W
SOIC8 .................................................................................................................. 96...... 45... °
C/W
注：
1）
超过这些额定值可½损坏器件。
2）
允许的最大功耗与最大结温
T
J (MAX)
、结点到环境的热电阻
θ
JA
以及环境温度
T
A
有关。任意环境温度
下允许的最大连续功耗由
P
D
(MAX) = (T
J
(MAX)-T
A
)/θ
JA
计算得出。
超出这个功耗会导致芯片温度过高，
稳
压器进入热关断模式。内部的热关断电路可以防止器件被永久损坏。
3）不担保器件在工½条件以外的操½。
4）根据 JESD51-7，在 4
层
PCB
板上测得。
1.8
电气特性
除非特别注明，V
CC
=4.7V，T
A
= +25℃。
参数
符号
条件
最小
典型
最大
单½
启动电流源（Drain 引脚）
内部稳压器电源电流
Drai
引脚的漏电流
击穿电压
电流电压管理（VCC 引脚）
内部稳压器停止工½时的
VCC
上升
电平
内部稳压器导通时的
VCC
下降电平
VCC
稳压器导通和断开滞后
IC
停止工½时的
VCC
下降电平
保护阶段终止时的
VCC
下降电平
内部
IC
消耗
内部
IC
消耗（无开关）
内部
IC
消耗，锁存器断开阶段
内部
MOSFET（Drain
引脚）
MP157
数据手册
3
©2015 Guangzhou ZLGMCU Technology CO., LTD.
VCCstop
VCCpro
I
CC
V
CC
=4.6V, Fs=45kHz
Duty= 40%
I
CC
I
CCLATCH
V
CC
=5V
--
--
--
16
165
--
uA
μA
VCC
ON
4.3
--
3.2
2.2
--
4.45
230
3.35
2.35
--
4.7
--
3.5
2.5
500
V
mV
V
V
μA
VCC
OFF
4.5
4.6
4.9
V
I
regulator
I
Leak
V
(BR)DSS
V
CC
=4V;V
Drain
=100V
V
CC
=5V;V
drain
=400V
2.5
--
500
3.5
10
--
4.5
25
--
mA
μA
V
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