It is isolated DC/DC topology for high efficiency and power outputs up to 400 W PWM, zero-voltage switching In order to regulate practically any power topology, including flyback, boost, push-pull, forward, buck, and many others, controllers are straightforward fixed frequency control ICs.
With the aid of the clever current control method known as pulse width modulation (PWM), you can easily regulate a variety of electrical components, including the heat output of heaters, the speed of motors, and much more.
PWM has already been used in, but is not limited to: fans with variable speed controls. drives for VRF HVAC compressors
Pulse width modulation has altered the world by drastically reducing the energy used by motor-powered products as inverter air conditioners, refrigerators, and washing machines, among many others. In rare instances, inverter air conditioners might use less electricity than their non-inverter equivalents.
The Global automotive isolated PWM controller market accounted for $XX Billion in 2021 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2022 to 2030.
Semtech Corp., a provider of analogue and mixed-signal semiconductors for computers, mobile devices, industrial equipment, and communications, unveiled the SC4911, a highly integrated voltage-mode pulse-width modulation controller with bias and primary-side inputs.
The SC4911 has a 50-A maximum startup current and comes in a space-saving MSOP-8 packaging. It is powered by a high-voltage bus or primary-side auxiliary winding.
The SC4911 is particularly well suited for creating high-voltage bias, off-line or isolated dc/dc power supply for telecommunications, data communications, and other equipment due to its extremely low startup current.
It is also appropriate for battery chargers for mobile phones and other portable electronics, as well as instrumentation power supply. The device is offered in tape-and-reel packaging, has an MSOP-8 container, and functions between -40°C and +125°C.
For consumer and industrial applications, ON Semiconductor has launched innovative synchronised PWM controllers. These devices allow for the flexibility to be used with a variety of input sources in consumer electronics like set-top boxes and LCD televisions as well as industrial and computing applications like printers, scanners, and telecom systems.
Their wide input voltage range, from 4.7V to 28V, makes them ideal for use in these types of devices. A complete system solution to address power management issues is offered to designers by ON Semiconductor’s growing portfolio of synchronous PWM controllers and MOSFETs.
In addition to expanding their high efficiency solutions to more products and applications, the new family of wide input voltage range controllers also makes it simpler for the customers to create cutting-edge power supplies due to their improved features and performance.
The most recent PWM controller components can produce output voltages as low as 0.6V (NCP3020A and NCP3020B) and 0.8V, and they offer a 1A incorporated gate drive (NCP3011). A buffered +1.25V reference voltage is also provided by the NCP3011, which can be used as a low dropout (LDO) controller for one or two extra outputs.
The operating frequencies of 300 kHz (NCP3020A), 600 kHz (NCP3020B), and 400 kHz are determined by an internal oscillator (NCP3011). In-rush current is constrained by a controlled digital soft-start. All three of the new synchronous PWM processors from ON Semiconductor have an externally compensated transconductance error amplifier that can be used with electrolytic or all ceramic output capacitors.
The incorporated boost drive clamp regulates the driver supply voltage to 7.6V to enable the use of lower voltage/higher efficiency MOSFETs. An integrated boost diode that contributes to a smaller overall system size and lower cost is also included. Lossless current limit, short circuit protection, output overvoltage, output undervoltage, and input undervoltage lockout are included in an improved safety feature set.
Dual level power supplies, an enable/disable button, and external synchronization are just a few of the extra features offered by the NCP3011. Due to decreased input capacitance, lower system costs, and the ability to synchronise to a higher switching frequency, the external synchronisation enables two controllers to operate 180° out of phase from one another.
The MAX5021 is an isolated power supply application-specific current-mode pulse width modulation (PWM) controller. In a power supply circuit, it is used to control the current flow and regulate the output voltage.
The MAX5021’s high degree of integration, which facilitates design simplification and lowers the need for external components, is one of its primary strengths. Among other things, it has a voltage reference, a current-sense amplifier, a PWM controller, and a high-voltage starter circuit.
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