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Protection For Switching Regulators

From Beta Dyne Inc.
 

 
Step down regulators are used to convert a higher DC voltage to a lower required DC voltage. Switching regulators offer higher efficiency than the linear regulators, excellent load step response and higher output currents. They are also more expensive than linear regulators and produce more noise at the output. A synchronous switching step down regulator is shown in Figure 1. The PWM monitors the output voltage V0 through feedback (FB) and adjusts the on time of Q1 in order to keep V0 constant due to the load or line variations. Q2 turns on after Q1 turns off to reduce the forward drop of D1, thus increasing the efficiency of the regulator. D1 provides a momentary path for the current through LO, RL and is used only during the switch-over time of Q1 turning off and Q2 turning on generated by the PWM. Even though most synchronous PWM IC's provide control and monitoring signals, they do not offer over voltage protection at the output because it is application dependent especially for adjustable output voltages.
Products & Services
IC switching voltage regulators are integrated circuits (ICs) that store energy in an inductor, transformer, or capacitor and then use this storage device to transfer energy from the input to the output in discrete packets over a low-resistance switch. Search by Specification | Learn more about IC Switching Voltage Regulators
IC power supplies are manufactured as integrated circuits. Learn more about IC Power Supplies
IC voltage regulators are three-terminal devices that provide a constant DC output voltage that is independent of the input voltage, output load current, and temperature. IC voltage regulators are used in power supplies that hold their output voltage constant over a wide range of load variations. Search by Specification | Learn more about IC Voltage Regulators
Voltage regulators are power converters that provide voltage control capabilities. They accept a voltage that varies over a given range and generate an output voltage that does not vary. Search by Specification | Learn more about Voltage Regulators
DC-DC converter chips provide a regulated DC voltage output from a different, unregulated input voltage.  Search by Specification | Learn more about DC-DC Converter Chips
Product Announcements
ROHM Semiconductor, USA LLC - Switching Regulators Optimize Power Efficiency
The BD91x Series of step-down switching regulators combine ROHM's propriety SLLM™ (Simple Light Load Mode) technology with current-mode PWM control to provide exceptional load regulation and... (read more)
Utility Systems Technologies, Inc. - Magnetic Synthesizer Replacement
The Sure-Volt Industrial-Grade Power Conditioner is the superior replacement for magnetic synthesizer power conditioners: Efficiency - 97% minimum Compatible with all load power supplies and UPS... (read more)
Premier Magnetics, Inc. - Switch-Mode Power Transformers
Premier Magnetics' offline switch-mode transformers were designed for use with Power Integrations' TOPxxx series offline PWM switching regulators in the flyback buck-boost circuit configuration. This... (read more)
Utility Systems Technologies, Inc. - Voltage Regulation for Outdoor Locations
Protect outdoor equipment and instruments sensitive from low or fluctuating voltage due to long conductor runs with industrial-grade voltage regulation. The Mini-EVR electronic voltage regulator in a... (read more)
Avel Lindberg, Inc. - DC to DC Converters
Power Converters from Avel offer peace of mind for applications where equipment needs a dependably consistent voltage supply. They are ideal for pairing with a battery source of 12/24/36/48/110Vdc for... (read more)
Digi-Key Corporation - Allegro’s A6210 Buck LED Driver at Digi-Key
From Digi-Key, the A6210 is a buck regulator that uses valley current-mode control. This control scheme allows very short switch on-times to be achieved, making it ideal for applications that require... (read more)
Mouser Electronics, Inc. - New TI Power Management Products
Mouser Electronics, Inc., known for its rapid introduction of the newest products, today announced it continues to expand its portfolio of power management devices from Texas Instruments Incorporated... (read more)
 
Topics of Interest
Linear regulators (or voltage regulators) act as a series variable power resistor when they are connected between an unregulated voltage source and a load. Linear regulators are used to provide... (Read More)
Inductor-based, step-up switching regulators offer high efficiency, small size and lower cost than isolated switching regulators (DC/DC converters). They are used to amplify (step up) the voltage of a... (Read More)
Switching voltage regulators are circuits that use an inductor, a transformer, or a capacitor as an energy-storage element to transfer energy from input to output in discrete packets. Feedback... (Read More)
In a dc machine, the mechanical commutator ensures that current flows in the machine windings in a manner that will produce useful torque, even when the rotor changes position and speed. From a... (Read More)
Figure 1A shows a block diagram of a forward converter with an SDSR output. The SDSR consists of Q2 and Q3, which are directly driven from the secondary of the power transformer T1. The timing diagram... (Read More)
See more product announcements for IC Switching Voltage Regulators
New Products: See it First, Buy it First

New Products: See it First, Buy it First
Future Electronics


Switching Regulators Optimize Power Efficiency

Switching Regulators Optimize Power Efficiency
ROHM Semiconductor, USA LLC


Switching Regulators with ESD resistance of 4kV

Switching Regulators with ESD resistance of 4kV
ROHM Semiconductor, USA LLC


11 See more product announcements for IC Switching Voltage Regulators