Collection: Power Supplies & Voltage Controllers
Envistia Mall offers a wide variety of DC power supplies, boost (step-up), buck (step-down), and boost-buck DC-DC converters, waterproof DC-DC converters with USB-C and Micro-USB outputs, constant voltage & constant current power modules, USB-powered converters, battery charging modules, linear voltage regulators & controllers.
The main product families we offer include:
Buck / Step-Down Converters
Buck, or step-down converters, are switched-mode DC-to-DC power converters that step down voltage (while stepping up current) from its input (supply) to its output (load).
Boost / Step-Up Converters
Boost, or step-up converters, are switched-mode DC-to-DC power converters that step up voltage (while stepping down current) from its input (supply) to its output (load).
Switching converters (such as buck and boost converters) provide much greater power efficiency as DC-to-DC converters than linear regulators, which are simpler circuits that lower voltages by dissipating power as heat but do not step up output current.
Linear Voltage Regulators
Linear regulators maintain a constant voltage output. It acts like a variable resistor, continuously adjusting a voltage divider network to maintain a constant output voltage and continually dissipating the difference between the input and the output as waste heat.
A linear regulator steps down a higher voltage on the input to a lower voltage on the output. This is similar to a buck converter, except a buck converter will waste much less power. So if the input voltage is much higher than the desired output voltage a buck regulator is usually preferable to a linear regulator.
As a general rule, linear regulators are ideal for applications that require low noise and a very stable output voltage, whereas switching power supplies are better suited for portable and battery-powered devices where battery life and efficiency are important.
Constant Voltage and Constant Current Power Supplies
Most of our Boost and Buck converters are constant voltage (CV) power supplies, meaning the output voltage is regulated, and its output current (Amps) is determined by the load characteristics (usually its resistance). Ohm's law can be used to determine the current required for a given output voltage and load impedance.
Some of our converters are Constant Voltage and Constant Current power supplies, meaning the maximum output current can be set in addition to the output voltage. In the case of Contact Current control, the output voltage is varied to maintain a set current across the load. Constant Current power supplies are often used for driving LEDs, laser diodes, and battery chargers, where excess current can damage the load.
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12V to 3V 3A Step-Down Waterproof Miniature DC-DC Converter Power Supply Module
Regular price $4.89Regular priceUnit price / per -
12V to 5V 3A Step-Down Waterproof Miniature DC-DC Converter Power Supply Module
Regular price $4.98Regular priceUnit price / per -
12V to 9V 1.7A Step-Down Waterproof Miniature DC-DC Converter Power Supply Module
Regular price $4.89Regular priceUnit price / per -
2 Pieces Enhanced Micro-USB Powered 5V 1A 1S LiPo Battery Charger TP4056 / DW01 Module
Regular price $3.29Regular priceUnit price / per -
5V-32V Input to 6V-48V Output Adjustable Boost Step Up XL6009 DC-DC Converter
Regular price $4.39Regular priceUnit price / per -
DC to DC 4V-38V In to 1.25V-36V Out 5A Step Down Buck Power Supply Module XL4015
Regular price $4.29Regular priceUnit price / per -
2V-28V Output 2A DC-DC MT3608 Step Up Boost Converter Power Supply Regulator
Regular price $3.89Regular priceUnit price / per -
LM2596 1.25V to 30V Step-Down Buck Constant Current / Constant Voltage (CC/CV) DC-DC Converter
Regular price $4.39Regular priceUnit price / perSold out -
6-24V Input to 5V USB 2A Car USB Charger Module DC-DC Buck Step-Down Converter
Regular price $3.89Regular priceUnit price / per -
2V-28V MT3608 DC-DC Micro-USB Step Up Boost Power Supply Voltage Regulator Module
Regular price $4.98Regular priceUnit price / per -
2.0V to 4.5V In 5V USB Out DC-DC PFM Boost Step-up Power Supply Converter Module
Regular price $3.89Regular priceUnit price / per -
12V to 6V 2.5A Step-Down Waterproof Miniature DC-DC Converter Power Supply Module
Regular price $4.89Regular priceUnit price / per -
DC-DC 1.25-35V LM2596 Step-Down Buck DC-DC Converter Power Supply Module
Regular price $4.98Regular priceUnit price / per -
6-12V Input to 3.3V 5V 12V DC-DC Multiple Output Voltage Conversion Module
Regular price $3.89Regular priceUnit price / per -
18650 LI-Ion Battery Charger and Dual USB 5V 2A Step Up Power Supply Module
Regular price $4.89Regular priceUnit price / per -
12V (8-23V) In To 5V Out DC-DC Converter Module 3A 15W with USB-C Output
Regular price $5.49Regular priceUnit price / perSold out -
12V (8-23V) In To 5V Out DC-DC Converter Module 3A 15W with Micro USB Output
Regular price $5.29Regular priceUnit price / per -
Mini360 Ultra-Small 1-17V Output DC-DC Step-Down Buck Converter Module RCs, Quadcopters, Drones, DIY
Regular price $3.89Regular priceUnit price / per -
5-35VDC or 5-22VAC to 1-34VDC LM317T Adjustable Step Down Linear Regulator Converter Power Supply Module
Regular price $4.19Regular priceUnit price / per -
Breadboard Power Supply Module 3.3V / 5V For MB-102
Regular price $3.69Regular priceUnit price / per -
1.2-34V 5A DC-DC Step-down CC/CV XL4015 Battery Charger LED Driver with Volt, Amp & Power Meter
Regular price $5.79Regular priceUnit price / per -
4V-38V to 1.25V-36V 8A DC-DC Step Down Buck Power Supply Module with Digital Voltmeter XL4016
Regular price $5.69Regular priceUnit price / per -
Enhanced Micro-USB Powered 5V 1A 1S LiPo Battery Charger TP4056 / DW01 Module
Regular price $2.89Regular priceUnit price / per -
12V (10-35V) In To 5V Out 10A 50W Waterproof DC-DC Converter Module
Regular price $6.19Regular priceUnit price / per