| Title of Reference Design |
Reference Design for a SEPIC Power Supply |
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| Key Attractions |
Reference design for a SEPIC converter featuring a universal PWM converter. The reference design offers integrated control, output adjustment, monitoring, and multiple protection features. The reference design offers resistor-selectable switching frequency from 100kHz to 1.4MHz. |
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The ISL8130EVAL3Z from Renesas is a reference design for a DC-DC converter which can deliver up to 10W of power. The reference design features a SEPIC topology and employs universal PWM controller ISL8130. This reference design has a small size measuring just 4.5cm x 3.15cm. The power supply can take 5.5 to 16V input and provide a constant output of 10V. The ISL8130EVAL3Z reference design also offers a resistor-selectable switching frequency from 100kHz to 1.4MHz, which makes it user adjustable and also provides a simple voltage mode control with fast transient response. The power supply also features a power good signal that indicates the user that the supply has stabilised its output voltages and passed all its internal self-tests, making it suitable for use in sensitive applications, such as power supply for medical devices. The reference design offers multiple safety features, such as overcurrent protection, overvoltage protection, and undervoltage protection. |
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The reference design is suitable for use as a power supply for microprocessors, ASICs, Ethernet routers, switches, medical and industrial instruments, etc. |
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Renesas |
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| URL |
Click Here |
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| Title of Reference Design |
Reference Design for a 200W SEPIC Power Supply |
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Reference design for a non-isolated adjustable 5V to 200V power supply with a maximum output current of 4A.The reference design works with 40V input and offers an efficiency of up to 93.7%. |
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PMP22270 is a reference design for a 5V to 200V power supply from TI. It can provide an output of up to 4A. The output voltage is set using a 0% to 100% duty-cycle, pulse-width-modulation (PWM) input. The reference design can work with input of 38V to 42V and provides a maximum output of 200V with an efficiency of up to 93.7%. The design enables low-input-ripple voltage and low EMI compared to flyback converters. This reference design is based on LM5022-Q1, which is a high-voltage, low-side N-channel MOSFET controller ideal for use in boost and SEPIC regulators. It contains all the features needed to implement single-ended primary topologies. The reference design provides 3x to 5x higher output power than traditional SEPICs and enables low-input-ripple voltage and low EMI compared to flyback converters. Output voltage regulation is based on current-mode control, which eases the design of loop compensation while providing inherent input voltage feed-forward. The reference design is suitable for surgical kits, toys, and household equipment. |
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The reference design is suitable for use as a power supply for surgery systems, industrial instruments, toys, etc. |
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| OEM Brand |
TI |
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| URL |
Click Here |
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| Title of Reference Design |
Reference Design for an Isolated Flyback Converter |
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Reference design for a DC-DC converter which employs a flyback topology and provides galvanic isolation, thus making it suitable for sensitive applications. |
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The MCP1661 Flyback Converter Reference Design from Microchip is an isolated flyback converter that offers galvanic isolation. The MCP1661 is a constant pulse-width modulation (PWM) frequency boost (step-up) converter based on a peak current mode architecture, which delivers high efficiency over a wide load range from two-cell and three-cell alkaline, energizer ultimate lithium, NiMH, NiC, and single-cell Li-ion battery inputs. It can take inputs from 4.75V to 5.25V and is suitable for applications that require higher output voltage capabilities. It can regulate the output voltage up to 32V and deliver 125mA typical load at 3.3V input and 12V output. The power supply offers a high efficiency of up to 92%. At light loads, MCP1661 skips pulse to keep the output voltage in regulation, but the voltage ripple is maintained low. The high level of integration of the design lowers total system cost, eases implementation, and reduces board area. |
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The reference design is suitable for applications such as camera phone flash, portable medical equipment, and hand-held instruments. |
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Microchip |
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| URL |
Click Here |
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| Title of Reference Design |
Reference Design for a Single-Output SEPIC Converter |
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Reference design for a single-output SEPIC converter which can operate over a wide input range of 6V to 18V. It offers an efficiency of over 90% and a voltage ripple lower than 0.7%. |
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The MAXREFDES1204 from Analog Devices is a reference design for a single-output SEPIC converter based on the MAX16990 controller. This reference design is rated to operate over a wide input voltage range of 6V to 18V and deliver an output power of up to 24W. The MAXREFDES1204 reference design offers a high efficiency of up to 90% while having an output ripple voltage lower than 0.7% at nominal input voltages. The power supply is capable of delivering a maximum current of 2A. The MAXREFDES1204 works in continuous current mode (CCM) and hence the output voltage depends just on the PWM. Therefore, the design is ideal for constant loads with less input noise and less output ripple spectrum but more attention to fast reverse recovery diode losses. It is suitable for use in harsh automotive environments and can be used as a power supply for automotive LED lighting, audio systems, navigation systems, dashboard equipment, etc. |
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The reference design is suitable for powering automotive equipment which run on 12V load, such as LED lights, vehicle infortainment systems, etc. |
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| OEM Brand |
Analog Devices |
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| URL |
Click Here |
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| Title of Reference Design |
Reference Design for a 35W Wide Input Range Flyback Converter |
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Reference design for a 35W flyback converter that can take a wide range of AC inputs from 90 to 305Vrms to provide a constant output of 48V. |
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The STEVAL-ILL069V2 is a reference design of a power supply based on flyback topology. It can take input directly from AC mains and provide a stable DC output of 48V. The reference design can work from 90 to 305V AC, running at a frequency of 45 to 66Hz. The design can provide a maximum power of 35W with an efficiency of up to 90%. An auxiliary 16V output is present to supply small circuits that absorb a maximum current of 20mA. The reference design has a compact size measuring just 130mm x 50mm and is ROHS-compliant. The STEVAL-ILL069V2 reference design has multiple safety features, including output shortcircuit and overload protection, and comes with an auto-restart for safe operation in lighting environments. Due to its stable output voltage, the reference design is suitable for use as an LED power supply for displays and signboards, outdoor lighting, etc. |
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| Application |
The reference design is suitable for use in LED applications. It can directly take supply from AC mains and power LED lights, signage, etc. |
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| OEM Brand |
STMicroelectronics |
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| URL |
Click Here |
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The author, Sharad Bhowmick, works as a Technology Journalist at EFY. He is passionate about power electronics and energy storage technologies. He wants to help achieve the goal of a carbon neutral world
