PFC controller with resonant controller
15 April 2009
Analogue, Mixed Signal, LSI
The new NCP1901 from ON Semiconductor is an integrated circuit that combines both a power factor correction (PFC) controller and a resonant half-bridge controller in a single package. The device’s high level of integration permits off-line adapters to be designed in small form factors while meeting worldwide efficiency standards.
The advantage of the NCP1901 is its combination of a PFC controller operating in a critical conduction mode (CRM) and a resonant half-bridge controller. Overall voltage regulation is maintained by adjusting the PFC output voltage, allowing a fixed frequency resonant controller to be utilised, reducing the transformer size and elevating efficiency.
The resonant controller has an integrated half-bridge driver rated at 600 V, eliminating the need for an external driver or gate drive transformer. A 600 V startup circuit allows direct connection to the bulk capacitor, improving efficiency at light loads through the omission of startup resistors. Combining both controllers in a single package ensures correct sequencing and operation between the PFC and half-bridge stages. This allows robust power supplies with key protection features, including open feedback loop, and PFC over-voltage and under-voltage protection, to be designed.
Further reading:
Online sensor technology hub
Analogue, Mixed Signal, LSI
Mouser’s sensor content hub offers an extensive collection of articles, blogs, eBooks, and product information from its technical experts and leading manufacturing partners.
Read more...
Ultra-low power MEMS accelerometer
Altron Arrow
Analogue, Mixed Signal, LSI
Analog Devices’ ADXL366 is an ultra-low power, 3-axis MEMS accelerometer that consumes only 0,96 µA at a 100 Hz output data rate and 191 nA when in motion-triggered wake-up mode.
Read more...
BT Audio 4 Click board
Dizzy Enterprises
Analogue, Mixed Signal, LSI
The BT Audio 4 Click board from MIKROE provides high-quality wireless audio streaming and data comms over Bluetooth.
Read more...
Precision MEMS IMU modules
Altron Arrow
Analogue, Mixed Signal, LSI
The ADIS16575/ADIS16576/ADIS16577 from Analog Devices are precision, MEMS IMUs that includes a triaxial gyroscope and a triaxial accelerometer.
Read more...
MEMS with embedded AI processing
Altron Arrow
Analogue, Mixed Signal, LSI
STMicroelectronics has announced an inertial measurement unit that combines sensors tuned for activity tracking and high-g impact measurement into a single, space-saving package.
Read more...
High-performance IMU
RS South Africa
Analogue, Mixed Signal, LSI
TDK Corporation has announced availability of the new InvenSense SmartMotion ICM-536xx family of high-performance 6-axis IMUs.
Read more...
High-temperature closed-loop MEMS accelerometer
RS South Africa
Analogue, Mixed Signal, LSI
This sensor from TDK is a high-temperature MEMS accelerometer with ±14 g input range and a digital interface for measurement while drilling applications.
Read more...
Dual accelerometers on the same die
Altron Arrow
Analogue, Mixed Signal, LSI
The LSM6DSV320X is the first mainstream inertial sensor to house a gyroscope alongside two accelerometers, one capable of sensing up to ±16 g and one sensing up to a staggering ±320 g.
Read more...
Dual-range IMU with edge processing
EBV Electrolink
Analogue, Mixed Signal, LSI
ST’s innovative LSM6DSV80X combines two accelerometer structures for 16 g and 80 g full-scale sensing, a gyroscope up 4000 dps, and embedded intelligence in a single component.
Read more...
High-reliability isolation amplifiers
EBV Electrolink
Analogue, Mixed Signal, LSI
The VIA series of isolation amplifiers from Vishay are designed to deliver exceptional thermal stability and precise measurement capabilities.
Read more...
printer friendly version