STMicroelectronics STCMB1; STCMB1; STCMB1-STM-0 [STCMB1]
STMicroelectronics PWM Controller The STMicroelectronics STCMB1 family is a 20V, 75kHz surface mount 20 pins PWM controller. This device is a transition mode (TM) PFC, a high voltage double-ended controller. It has an electrical rating of 800V with 6mA current. The PFC section uses a proprietary constant on-time control methodology that does not require a sinusoidal input reference, thereby reducing the system cost and external component count. Features and Benefits Enhanced constant on-time PFC with input voltage feedforward, THD optimizer Half-bridge operation up to 750kHz with self-adjusting dead time Independent debug mode for both the converters It has a complete set of protection such as dc brown-out, two-level OCP, hard switching prevention (HSP) function for anti-capacitive mode protection and safe start-up It is LLC resonant combo controller Operation temperature ranges between -40°C and 85°C Proprietary time shift control for improved input ripple rejection and dynamic response Synchronous burst mode operation with PFC enhances light-load efficiency Applications AC-DC adaptors LED street lighting SMPS for LED TVs
STMicroelectronics PWM Controller
The STMicroelectronics STCMB1 family is a 20V, 75kHz surface mount 20 pins PWM controller. This device is a transition mode (TM) PFC, a high voltage double-ended controller. It has an electrical rating of 800V with 6mA current. The PFC section uses a proprietary constant on-time control methodology that does not require a sinusoidal input reference, thereby reducing the system cost and external component count.
Features and Benefits
- Enhanced constant on-time PFC with input voltage feedforward, THD optimizer
- Half-bridge operation up to 750kHz with self-adjusting dead time
- Independent debug mode for both the converters
- It has a complete set of protection such as dc brown-out, two-level OCP, hard switching prevention (HSP) function for anti-capacitive mode protection and safe start-up
- It is LLC resonant combo controller
- Operation temperature ranges between -40°C and 85°C
- Proprietary time shift control for improved input ripple rejection and dynamic response
- Synchronous burst mode operation with PFC enhances light-load efficiency
Applications
- AC-DC adaptors
- LED street lighting
- SMPS for LED TVs