HFC0300
Active Part Numbers:
HFC0300HS-LF-P HFC0300HS-LF-Z HFC0300HS-LF
Meaning of P & Z 
Evaluation Tools
HFC0300 is a variable off time controller. Based on a fixed peak current technique, the controller decreases its frequency as the load becomes lighter. As a result, it offers excellent efficiency performance at light load while optimizing the efficiency in other load conditions.
When the frequency decreases to some level, peak current decreases with the decrease of the load to prevent transformer mechanical resonance. The controller enters burst mode when the output power falls below a given level.
The HFC0300 features various variable protections like Thermal Shutdown (TSD), VCC Under Voltage Lockout (UVLO), Over Load Protection (OLP), Short Circuit Protection (SCP), Over Voltage Protection (OVP).
The HFC0300 is available in the 8-pin SOIC8 package.
HFC0300 Resources
-
ELECTROCARDIOGRAMS (ECG)Electrocardiogram (ECG, or EKG) devices measure heart rate based on electrical activity. This key piece of medical equipment is used in home, first responder, and clinical settings. New ECG designs are incorporating additional features such as wireless connectivity and innovative user interfaces. These devices are under a constant need to deliver highly accurate, reliable performance with reduced ...
-
ROBOTICSAs robotics systems improve with the advances of Industry 4.0, their standards for power, sensing, and control also increase. In this rapidly growing industry, every day is a new opportunity to develop robots that offer better and better flexibility, energy efficiency, and system intelligence. Robots variety of uses have led to smaller, increasingly mobile innovations with highly integrated commun...
-
SET-TOP BOXES (STBS)Set-top boxes (STBs) and similar devices receive and output signals from a variety of input sources to TVs. As entertainment technology becomes progressively smarter, as well as more compact and efficient, providers are tasked with delivering long-term reliability and low power consumption in a user-friendly, cost-effective design. The recent surge of smart devices and ever-increasing consumer exp...
-
TABLET PCSTablets, along with other mobile devices, are one of todays largest consumer technology markets. As this market continues to grow, it is changing and increasing in complexity faster than ever. Tablets are expected to have virtually the same processing power and capabilities as a laptop/notebook PC, in addition to nearly the same level of portable convenience as a smartphone. This crossover of cons...
-
NOTEBOOKS (IMVP8)Notebook computers and laptops are a crucial device for many consumers and businesses, and therefore need to be able to offer reliable performance and a streamlines user experience in a slim package. As new technologies and applications continue to enter the market, notebooks and laptops must balance increasing processing performance and efficiency demands with customer expectations for small, lig...
-
ULTRASOUND MACHINES (PORTABLE)Medical ultrasound imaging uses high-frequency sound waves to view internal structures inside the body, such as internal organs, blood vessels, and developing fetuses in the womb. Ultrasound technology is in high demand as it is a less invasive, less expensive diagnostic method than imaging techniques such as MRIs or CT scans. Advances in integrated technology have allowed the introduction of port...
-
PORTABLE POWER TOOLSPortable power tools offer a wide variety of features to a range of customers from everyday consumers doing small home improvement projects to construction and maintenance professionals. Because of this, portable power tool designs often demand high flexibility and have strict power, safety, and total size requirements. Both cordless and corded power tools must be able to offer high efficiency in ...
-
PORTABLE POSPortable points of service (POS) are tasked with delivering fast, secure payment transactions amid changing payment methods and growing customer expectations. They must offer high reliability, long battery life, ease-of-use, and quick processing speeds to accelerate checkout times. As retail and service spaces increasingly compete with online goods and service providers, efficiency and convenience...
-
DIGITAL SIGNAGEDigital signage — including kiosks and other interactive displays — are gaining popularity for advertisements and displays in public and retail spaces. Regardless of whether the signage display is DLP, LCD, or LED, it must offer high brightness and resolution with excellent color and the ability to seamlessly display images across the maximum possible surface area. High-quality audio, support for ...
-
BARCODE SCANNERSBarcode scanners have long been an integral part of retail and logistics system needs, but growing consumer expectations for short checkout, ordering, and delivery times have made they more ubiquitous and crucial than ever. From checkout lines to warehouse order fulfillment, these devices are expected to be fast, connected, and highly secure with convenient user interfaces and high efficiency.Our ...
-
SCANNERSScanners are incorporating more features into new designs, such as wireless and wired connectivity, embedded processing and safety features, and convenient user interfaces. Todays scanners must be able to quickly image high-quality renditions of documents or photos, and energy-saving trends have increased the need for ultra-low standby power and reduced energy consumption. Our cutting-edge soluti...
-
<120WAC/DC power supplies must deliver high-efficiency power conversion for a variety of consumer, industrial, and commercial applications. Power supplies under 120W require ultra-low standby power and high levels of integration to meet the various regulations and requirements of their many applications. Our broad portfolio of solutions includes PFC controllers, flyback controllers, and flyback synchr...
-
<70WAC/DC power supplies must deliver high-efficiency power conversion for a variety of consumer, industrial, and commercial applications. Power supplies under 70W require ultra-low standby power and high levels of integration to meet the various regulations and requirements of their many applications. Our broad portfolio of solutions includes flyback controllers, flyback regulators, and flyback sync...
-
POWERING 5G: PFC + LLC POWER SUPPLY SOLUTIONThe development of 5G networks brings new and exciting challenges for the powering of base stations. The MPS solution for powering 5G combines high power and high efficiency within a 1U-sized rack mount casing. It is made up of two core blocks: a totem-pole topology power factor correction (PFC) stage, and a resonant LLC DC/DC converter that ensures stable and efficient power delivery to the outpu...
-
MEASURING HIGH-FREQUENCY, COMMON-MODE CURRENT, VOLTAGE, AND IMPEDANCE (PART III)This is the final part of a three-part series discussing measurement methods for high-frequency, common-mode (CM) current, voltage, and impedance using a flyback converter. Part I covered the basic principles of radiated EMI and the traditional method for measuring CM current in a flyback converter topology. Part II explored a ferrite bead solution for CM current measurement errors and how to obta...
-
MEASURING HIGH-FREQUENCY, COMMON-MODE CURRENT, VOLTAGE, AND IMPEDANCE (PART II)This is the second part of a three-part series discussing measurement methods for high-frequency, common-mode (CM) current, voltage, and impedance using a flyback converter. Part I covered the basics of radiated EMI and the traditional method for measuring CM current in a flyback converter topology. Part II will propose a solution to common errors when measuring CM current, and then it will demons...
-
TRANSFORMING THE LOW-CARBON ERA WITH MPS'S AC/DC POWER SOLUTIONS (PART I)The low-carbon era is leading the development trend for smaller and highly efficient chips. First, switching power supplies replaced linear power supplies in the 1980s; now, the efficiency of power supplies has significantly improved while the overall solution size has been reduced. When considering consumer requirements for portability, switching power supplies continue to become more and more ad...
-
TRANSFORMING THE LOW-CARBON ERA WITH MPS'S AC/DC POWER SOLUTIONS (PART II)To meet the increasingly stringent requirements for environmentally friendly solutions, MPS’s AC/DC power supply products utilize advanced technologies to enhance performance and achieve energy conservation. This article is the second in a two-part series to discuss trend-setting AC/DC solutions. Part I served as an introduction for the carbon-free era and the problems that designers face with tr...
-
ELEVATING HIGH-DENSITY ADAPTER DESIGNS WITH INTEGRATED CAPACITIVE ISOLATIONThe demand for fast charging has driven the unprecedented evolution of high-density adapters. In practical adapter designs, there are countless implementations of new switching power devices, topologies, and control schemes. With the introduction of these cutting-edge technologies, the power density of adapter products has significantly increased. 1W/cm3 is becoming the common density for high-de...
-
MEASURING HIGH-FREQUENCY, COMMON-MODE CURRENT, VOLTAGE, AND IMPEDANCE (PART I)To obtain an accurate EMI analysis when modeling power electronics, it is crucial to measure the impedance on the noise source and propagation path. For radiated EMI, the corresponding frequency band is typically between 30MHz and 1GHz. Due to the high frequency, it can be difficult to measure parameters such as voltage, current, and impedance. This article is the first part of a three-part serie...
-
MPS DESIGN ASSISTANT TOOLMPS is committed to providing users with a variety of simulation solutions, including SIMPLIS models, SPICE models, DC/DC converter design models, and Virtual Bench Pro. The easy-to-use Design Assistant is the most popular tool provided by MPS, and its demand continues to grow each year. Figure 1 shows the annual growth of how often our Design Assistant is requested and utilized. In partic...
-
CONTROLLING PRIMARY-SIDE RINGINGThe flyback power supply is one of the most commonly used topologies. Typically, the transformer’s leakage inductance causes primary-side ringing, which generates voltage spikes that damage the MOSFET. It is essential to design the transformer and MOSFET components to control ringing. MPS has introduced an RCD clamp circuit design strategy to reduce leakage inductance. This circuit is described in...
-
HOW INTEGRATION IS ADVANCING INNOVATIONS IN POWER MANAGEMENTAs modern devices become smarter and more customizable, consumers are also demanding that they be smaller and more powerful. This has driven demand for technology that can manage thermals with ever-higher power densities as processing power increases. MPS is innovating and creating highly integrated converters and controllers with cutting-edge efficiency and power density. By integrating the entir...
-
DESIGNING AN ACTIVE-CLAMP FORWARD CONVERTER FOR POE-BT APPLICATIONS (PART II)This article is the second part of a two-part series exploring how to design an active-clamp forward controller for PoE-bt applications. Part I covered PoE applications, as well as the basics for forward converter topologies and active clamps. Part II will review secondary-side synchronous rectification MOSFETs, secondary spike absorption circuits, and efficiency verification processes for PoE-bt ...
-
DESIGNING AN ACTIVE-CLAMP FORWARD CONVERTER FOR POE-BT APPLICATIONS (PART I)When compared to traditional AC power supply modes, power over Ethernet (PoE) power supplies can simultaneously supply power and transmit data through an existing Ethernet cable. By integrating the power supply and data cables, PoE applications are cost-effective and provide flexible installation. PoE solutions are rapidly growing in popularity across multiple industries as applications continue t...
Learn about our Evaluation Kit
Log in to your account
Create New Account