意法半导体广泛的脉宽调制(PWM)控制器产品组合可以支持隔离和非隔离的AC-DC和DC-DC开关电源 - 基于面向中高功率SMPS的单端(如反激式、正向或准谐振)和双端配置(如非对称半桥)中最流行的拓扑。
创新型PWM控制器确保更高的转换器效率和更低的设计成本
我们的PWM控制器产品包括众多高级数字控制器,采用创新型解决方案,可优化各种负载条件(特别是轻载条件)下的转换器效率,确保高电压启动。
这些PWM控制器IC还集成了完整的保护功能,即使在室外应用较宽的温度范围下,也可提高稳定性和可靠性。这样就减少了外部组件数量,使转换器的尺寸和成本最小化。
UC(电压模式)和SG(电流模式)系列的工业标准控制器也可用于更多主流的SMPS设计。

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Compact quasi-resonant PWM controller for ultra-low standby power supplies
The STCH03 features a built-in high-voltage start-up circuit with zero power consumption, fully integrated blocks for primary-side constant-current output regulation and advanced power management, making it the best choice for high efficiency and ultra-low standby consumption power supplies with excellent dynamic performance.
Designed to provide a constant output current (CC) regulation using primary-sensing feedback, the STCH03 reduces BOM costs and simplifies your design as a dedicated current reference IC and current sensor are no longer required.
Moreover, an embedded frequency jitter technique helps reduce EMI noise.
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L6591
Current mode PWM controller for Asymmetrical Half Bridge converter topology
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UC2844B
Current Mode PWM
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UC3844B
Current Mode PWM
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UC2843B
Current Mode PWM
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STCH03
Offline PWM controller for low standby adapters
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UC3843B
Current Mode PWM
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STNRG328A
Digital controller for power conversion applications with up to 6 programmable PWM generators, 96 MHz PLL
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STNRG288A
Digital controller for power conversion applications with up to 6 programmable PWM generators, 96 MHz PLL
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L6565
Quasi-resonant Controller
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UC2842B
Current Mode PWM
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UC3842B
Current Mode PWM
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L5991
Current Mode PWM
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L6566BH
Multi-mode controller for SMPS
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UC3845B
Current Mode PWM
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UC2845B
Current Mode PWM
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STNRG388A
Digital controller for power conversion applications with up to 6 programmable PWM generators, 96 MHz PLL
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SG3524
Voltage Mode PWM
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SG3525
Voltage Mode PWM
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L6566A
Multi-mode controller for SMPS with PFC front-end
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SG2525
Voltage Mode PWM
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L6566B
Multi-mode controller for SMPS
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L6668
Smart primary controller