CXAC85193A CXAC85193B CXAC85193C CXAC85193D系列是高性能固定频率电流模式控制器。它们是专为离线和直流-直流转换器应用而设计的,为设计者提供了一个具有成本效益的解决方案,只需最少的外部组件。这些集成电路具有用于精确占空比控制的修剪振荡器、温度补偿基准、高增益误差放大器、电流传感比较器和非常适合驱动功率MOSFET的大电流图腾极输出。还包括保护特性,包括输入和参考欠压闭锁,每个都有滞后、逐周电流限制、可编程输出死区时间和用于单脉冲计量的锁存器。这些设备有8针双列直插式陶瓷和塑料封装以及8针塑料表面安装(SO-8)。和14针塑料表面安装(SO-14)。SO-14封装图腾柱输出级有独立的电源和接地引脚。这个系列成员之间的差异是欠电压锁定阈值。CXAC85193A CXAC85193B CXAC85193C CXAC85193D具有16 V(开)和10 V(关)的紫外线阈值,非常适合离线转换器。CXLE8941B的相应阈值为8.5 V和7.9 V。
用于精确占空比控制的微调振荡器放电电流
电流模式运行至500 kHz
自动前馈补偿
用于逐周限流的闭锁式脉宽调制
带欠压锁定的内部微调基准
大电流图腾极输出
带滞后的欠压锁定
低启动和工作电流
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[ CXAC85193A ]"
目录
7.相关产品
产品概述 返回TOP
The CXAC85193A CXAC85193B CXAC85193C CXAC85193D series are high performance fixed frequency current mode controllers. They are specifically designed for Off-Line and DC-to-DC converter applications offering the designer a cost effective solution with minimal external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET. Also included are protective features consisting of input and reference under voltage lockouts each with hysteresis, cycle-by-cycle current limiting, programmable output dead time, and a latch for single pulse metering. These devices are available in 8-pin dual-in-line ceramic and plastic packages as well as the 8-pin plastic surface mount (SO-8). And 14-pin plastic surface mount (SO-14). SO-14 package Figure Teng column output stage has a separate power and ground pins. Difference between members of this series is the under-voltage lockout thresholds. TheCXAC85193A CXAC85193B CXAC85193C CXAC85193D has UVLO thresholds of 16 V (on) and 10 V (off), ideally suited for off-line converters. The corresponding thresholds for the CXLE8941B are 8.5 V and 7.9 V.
产品特点 返回TOP
Trimmed Oscillator Discharge Current for Precise Duty Cycle Control
Current Mode Operation to 500 kHz
Automatic Feed Forward Compensation
Latching PWM for Cycle-By-Cycle Current Limiting
Internally Trimmed Reference with Under voltage Lockout
High Current Totem Pole Output
Under voltage Lockout with hysteresis
Low Start-Up and Operating Current
应用范围 返回TOP
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产品封装图 返回TOP
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型号 |
封装 |
开关管 |
最大功率 |
待机功率 |
工作模式 |
最大Vcc电压 |
最大工作频率 |
拓扑 |
SOP7 |
700V BJT |
2.5W |
<100mW |
PFM |
8.5V |
100KHZ |
PSR |
|
SOP7 |
800V BJT |
5W |
<100mW |
PFM |
8.5V |
100KHZ |
PSR |
|
SOP7 |
800V BJT |
10W |
<100mW |
PFM |
8.5V |
100KHZ |
PSR |
|
DIP7 |
800V BJT |
10W |
<100mW |
PFM |
8.5V |
100KHZ |
PSR |
|
SOP5 |
800V BJT |
5W |
<100mW |
PFM |
8.5V |
100KHZ |
PSR |
|
TO126 |
650V BJT |
4W |
<300mW |
PFM |
7V |
60KHZ |
PSR |
|
TO126 |
700V BJT |
5W |
<300mW |
PFM |
7V |
60KHZ |
PSR |
|
TO126 |
700V BJT |
5W |
<300mW |
PFM |
7V |
60KHZ |
PSR |
|
SOP8 |
600V MOS |
5W |
<200mW |
PWM |
26V |
70KHz |
PSR |
|
DIP8 |
600V MOS |
10W |
<200mW |
PWM |
30V |
60KHZ |
PSR |
|
SOP8 |
外置 |
100W |
<300mW |
PWM |
30V |
65KHZ |
SSR |
|
SOT23-6 |
外置 |
30W |
<200mW |
PWM |
30V |
65kHz |
SSR |
|
DIP8 |
外置 |
200W |
<300mW |
PWM |
16V |
52kHz |
SSR |
|
DIP8 |
外置 |
200W |
<300mW |
PWM |
16V |
52kHz |
SSR |
|
SOP8 |
外置 |
200W |
<300mW |
PWM |
16V |
52kHz |
SSR |
|
SOP8 |
外置 |
200W |
<300mW |
PWM |
16V |
52kHz |
SSR |