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Showing Results For: Switching Regulators

Switching Regulators

PMIC - Voltage Regulators – DC-DC Switching Regulators

A voltage regulator is an electrical device that maintains the voltage of a power source at a required voltage. The voltage regulators effectively keep the voltages in the recommended range of the electrical equipment receiving those voltages. Such devices are utilized in motor vehicles of all types to match the output voltage of the electrical generator and the electrical load and to the charging needs of the battery. These devices are also effectively used in electrical equipment where frequent voltage changes will be damaging. Therefore, it can regulate voltage during fluctuations and variations in load. It is useful for regulating both AC and DC voltage. They can take high input voltages and give out more stable or lower voltages. A secondary use for them is to protect the circuits during voltage spikes that can lead to severe damage.

Types of Voltage Regulators

Voltage regulators utilized in low-voltage electronic gadgets are typically integrated circuits. Power appropriation focuses on giving AC capacity to residential and industrial shoppers to utilize more refined and precisely enormous voltage regulators that keep up with appraised 110 V voltage paying little mind to utilization demands across the area.

In light of the physical plan, voltage controllers should be visible in coordinated circuits, electromechanical gadgets, or solid-state automated regulators. The most widely recognized characterizations of the active voltage regulators are linear and switching regulators.

Linear Regulators

Linear regulators are simple transistor-based devices that are usually packed as integrated circuits. They use differential amplifiers in their internal circuits to manage the output voltage against the reference voltage. Linear voltage regulators may give a fixed output or have a certain degree of adjustable control. They would require input current equal to the output current.

Switching Regulators

A switching regulator is a circuit that utilizes a power switch, a diode, and an inductor to change energy from input to output. They can toggle a device ON/OFF high frequency and change the duty cycle of the voltage transferred as output. The common topologies of these regulators are a buck, boost, and buck-boost. Buck converters are considered more effective during the voltage step down and can still increase the output current. The boost converters, on the other hand, can increase the output voltage to an amount more than the input voltage. 

The power switch used by these regulators is usually a Field Effect Transistor controlled by a switching controller IC that evaluates the output of the switching regulator in a feedback control loop. This ensures it maintains a constant voltage output when operating under normal conditions. Often in switching regulators, the FET is designed as a discrete component placed externally to the switching controller. In other designs, you will find the FET and controller in the same Integrated Circuit. 

Why Prefer Switching Regulators Over Linear Regulators?

Switching regulators provide three key advantages compared to linear regulators:

  • They offer much better switching efficiency.
  • Less energy loss occurs during the transfer, and smaller components and minimum thermal management are needed.
  • They can transform the energy stored by an inductor in a switching regulator into voltages greater than the input, are negative, or even through a transformer to offer electrical isolation per the input. 

Given such advantages, switching regulators are highly preferred over linear regulators. However, linear regulators also provide lower noise, higher bandwidth, and a simple design, making them the less expensive option.


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BD7F105EFJ-CE2, ROHM
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BD7F205EFJ-CE2, ROHM
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TLE8366EV33XUMA1, Infineon
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MAX15301AA02+CJK, Maxim Integrated
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MAX1595EUA33+, Maxim Integrated
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MAX743EWE+, Maxim Integrated

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MAX17544ATP+, Maxim Integrated

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TSR 3-2450, TRACOPOWER

TSR 3-2450, TRACOPOWER

3A Step-Down Switching Regulator TSR 3 Series The Tracopower TSR-3 series of DC/DC converters are non isolated step-down switching regulators for point of load applications. These switching regulators have a high efficiency up to 95% which allows a full 3A load operation up to 50°C ambient temperature without the need of heat-sink or forced cooling. The TSR-3 DC/DC converters provide a remote on/off input and are the ideal solution for many battery powered applications. High performance switching regulator High efficiency up to 95% Low profile open frame design Adjustable output voltage Remote On/Off Wide input voltage ranges 2.5–5.5, 4.5–14 and 10–30 VDC Output voltages from 0.6 to 15 VDC Short circuit protection Low output ripple & noise 3-year product warranty Standards EN 60950-1, UL 60950-1
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TSR 1-0512SM, TRACOPOWER

TSR 1-0512SM, TRACOPOWER

Traco 1A Step-Down Switching Regulator TSR-1SM Series The Tracopower TSR-1SM series of step-down switching regulators have a high efficiency up to 96%, which allows full load operation up to +65°C ambient temperature without the need of any heat transmission layer. The TSR-1SM switching regulators provide other significant features over linear regulators, i.e. better output voltage accuracy (±2 %) and lower standby current of 1 A. The high efficiency and low standby power consumption makes these regulators an ideal solution for many battery powered applications. SMD-package Up to 96% efficiency No thermal layer required Built in filter capacitors Operation temperature range –40°C to +85°C Short circuit protection Wide input operating range Excellent line / load regulation Low standby current Standards UL/cUL 60950-1, IEC/EN 60950-1
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TSR 1-2412SM, TRACOPOWER

TSR 1-2412SM, TRACOPOWER

Traco 1A Step-Down Switching Regulator TSR-1SM Series The Tracopower TSR-1SM series of step-down switching regulators have a high efficiency up to 96%, which allows full load operation up to +65°C ambient temperature without the need of any heat transmission layer. The TSR-1SM switching regulators provide other significant features over linear regulators, i.e. better output voltage accuracy (±2 %) and lower standby current of 1 A. The high efficiency and low standby power consumption makes these regulators an ideal solution for many battery powered applications. SMD-package Up to 96% efficiency No thermal layer required Built in filter capacitors Operation temperature range –40°C to +85°C Short circuit protection Wide input operating range Excellent line / load regulation Low standby current Standards UL/cUL 60950-1, IEC/EN 60950-1
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TSR 2-0518, TRACOPOWER

TSR 2-0518, TRACOPOWER

Tracopower 2A Step-Down Switching Regulator, TSR 2 Series New and advanced ultra-compact range of SIP packaged step down regulators from Tracopower. The TSR 2 series offers a direct drop-in upgrade to the antiquated LMxx series. Boasting up to 96% efficiency without the need for extra heat dissipation such as a heat sink. Another main benefit of the TSR 2 series is the significant advantage of using switching regulators over linear variants. Benefits for making the transition include better output accuracy and a lower standby current. Features and Benefits Compatible with the LMxx series linear regulators. Integral short circuit protection.
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MAX734CSA+, Maxim Integrated

MAX734CSA+, Maxim Integrated

IC PROG SUPP FLASH MEM 12V 8SOIC
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TSN 1-24120, TRACOPOWER

TSN 1-24120, TRACOPOWER

Traco 1A Step Down Switching Regulator - TSN-1 Series The Traco Power TSN 1 Series of step down switching regulators are a replacement for inefficient 79xx linear regulators. This series of DC/DC converters feature a high efficiency up to 96%, which allows full load operation up to +70°C (+85°C with derating) ambient temperature without the need of any heat sink or forced air cooling. The TSN 1 series of switching regulators also features over linear regulators, lower standby current and no requirement of external capacitors. The TSN 1 DC/DC converters are ideal in applications for energy sensitive applications. Non-isolated converter for negative output Small size and low profile Pin compatible with LM79xx linear regulators No heatsink required High efficiency up to 96% Operation temperature range –40°C to +85°C Protection against overload, short circuit and over-temperature Fixed switching frequency Wide input range up to -32 Vdc Excellent line / load regulation Low standby current ∼ 2 mA 3-year product warranty
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R-78AA12-0.5SMD, Recom

R-78AA12-0.5SMD, Recom

R78AAxx-0.5SMD Series Replacement for R-78Axx-0.5SMD series Non-isolated High efficiency up to 97% Adjustable output voltage Wide input voltage range Thermal shutdown and continuous short circuit protection Remote On/Off control UL94V-0 package material SMD 10 pin package Note Derate output when operating temperature above +71°C. MTBF to MIL-HDBK 217F (+25°C). Stk numbers 706-3922 and 706-3957 have fixed output voltages. Standards EN-60950-1
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R-78AA5.0-0.5SMD-R, Recom

R-78AA5.0-0.5SMD-R, Recom

R78AAxx-0.5SMD-R Series Full Reel Package The Recom Power R-78AAxx-0.5SMD series of DC-DC converters feature efficiency up to 97% which means that very little energy is wasted as heat and there is no need of a heatsink. These high efficiency regulators are manufactured without lead and meet the RoHS 6/6 requirements, as well as the increased reflow soldering temperatures associated with vapour phase soldering, making these DC-DC converters perfectly suited to modern pick-and-place mass production. The Recom Power R-78AAxx-0.5SMD comes in the manufacturer standard reel package. Ideal applications of these DC-DC converters are in the battery-powered, industrial, medical and automotive markets. RoHS 6/6 Conform (100% Lead Free) Efficiency up to 97% Non isolated, no need for heatsinks High Reflow Temperature SMD Package Adjustable Output Voltage Wide input range Short circuit protection, Thermal shutdown Remote On/Off Control UL94V-0 Package Material Very Low Shutdown Current Manufacturer Standard Full Reel Package Approvals EN-60950-1
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