Buck, Boost, and Buck-Boost Converters

Intersil has many options for dc-dc converters, controllers and regulators with buck, boost and buck-boost topologies.

Buck Converters

What is a Buck or Step-Down Converter?

A buck converter, also known as a step-down converter, is a DC-DC power converter that provides voltage step down and current step up. The converter reduces the voltage when the power source has a higher voltage than Vin. A buck converter generally provides the most efficient solution with the smallest external components.

Unsure if a low powered linear regulator or highly efficient switching regulator is a better option for your design? Learn more about Linear vs. Switching Regulators »

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Looking for a buck converter? Here are some online tools to help you get started:

Reference Designs & Evaluation Platforms

The ISL85003EVAL2Z and ISL85003AEVAL2Z evaluate the performance of the ISL85003 and ISL85003A, high efficiency 3A synchronous buck regulators.
The ISL85003DEMO1Z and ISL85003ADEMO1Z demonstrate the performance of the ISL85003 and ISL85003A, high efficiency synchronous buck regulators.
ISL8018EVAL3Z
  EVAL BOARD
The ISL8018EVAL3Z is used for a complete demonstration of the performance of the ISL8018 low quiescent high efficiency synchronous buck regulator.
ISL85403DEMO1Z
  DEMO BOARD
The ISL85403DEMO1Z demonstration board allows quick evaluation of the ISL85403 in the synchronous buck configuration.
The ISL85003EVAL2Z and ISL85003AEVAL2Z evaluate the performance of the ISL85003 and ISL85003A, high efficiency 3A synchronous buck regulators.
The ISL85003DEMO1Z and ISL85003ADEMO1Z demonstrate the performance of the ISL85003 and ISL85003A, high efficiency synchronous buck regulators.
ISL8018EVAL3Z
  EVAL BOARD
The ISL8018EVAL3Z is used for a complete demonstration of the performance of the ISL8018 low quiescent high efficiency synchronous buck regulator.
ISL85403DEMO1Z
  DEMO BOARD
The ISL85403DEMO1Z demonstration board allows quick evaluation of the ISL85403 in the synchronous buck configuration.
The ISL85003EVAL2Z and ISL85003AEVAL2Z evaluate the performance of the ISL85003 and ISL85003A, high efficiency 3A synchronous buck regulators.
The ISL85003DEMO1Z and ISL85003ADEMO1Z demonstrate the performance of the ISL85003 and ISL85003A, high efficiency synchronous buck regulators.
ISL8018EVAL3Z
  EVAL BOARD
The ISL8018EVAL3Z is used for a complete demonstration of the performance of the ISL8018 low quiescent high efficiency synchronous buck regulator.
ISL85403DEMO1Z
  DEMO BOARD
The ISL85403DEMO1Z demonstration board allows quick evaluation of the ISL85403 in the synchronous buck configuration.
Boost Converters

What is a Boost or Step-up Converter?

Boost converters, also known as a step-up converters, are DC-DC power converters with an output voltage greater than its input voltage. The driver boosts the voltage of the power source that is less than the Vin.

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Looking for a boost converter? Here are some online tools to help you get started:

Reference Designs & Evaluation Platforms

ISL97656IRTZEVALZ
  EVAL BOARD
The ISL97656IRTZEVALZ is an evaluation kit for the ISL97656 step-up voltage regulator that operates with high frequency and high efficiency.
The ISL97519AIUZEVALZ and ISL97519IUZEVALZ evaluation boards are kits for evaluating the ISL97519 and ISL97519A step-up voltage regulators.
ISL8130EVAL3Z
  EVAL BOARD
ISL8130EV1Z is a sepic converter, which features the universal PWM controller, ISL8130.
ISL8130EV1Z
  EVAL BOARD
ISL8130EV1Z is a standard boost converter, which features the universal PWM controller, ISL8130.
ISL97656IRTZEVALZ
  EVAL BOARD
The ISL97656IRTZEVALZ is an evaluation kit for the ISL97656 step-up voltage regulator that operates with high frequency and high efficiency.
The ISL97519AIUZEVALZ and ISL97519IUZEVALZ evaluation boards are kits for evaluating the ISL97519 and ISL97519A step-up voltage regulators.
ISL8130EVAL3Z
  EVAL BOARD
ISL8130EV1Z is a sepic converter, which features the universal PWM controller, ISL8130.
ISL8130EV1Z
  EVAL BOARD
ISL8130EV1Z is a standard boost converter, which features the universal PWM controller, ISL8130.
ISL97656IRTZEVALZ
  EVAL BOARD
The ISL97656IRTZEVALZ is an evaluation kit for the ISL97656 step-up voltage regulator that operates with high frequency and high efficiency.
The ISL97519AIUZEVALZ and ISL97519IUZEVALZ evaluation boards are kits for evaluating the ISL97519 and ISL97519A step-up voltage regulators.
ISL8130EVAL3Z
  EVAL BOARD
ISL8130EV1Z is a sepic converter, which features the universal PWM controller, ISL8130.
ISL8130EV1Z
  EVAL BOARD
ISL8130EV1Z is a standard boost converter, which features the universal PWM controller, ISL8130.
Buck-Boost Converters

What is a Buck-Boost Converter?

A buck-boost converter generates an output voltage either greater or less than the input voltage. The advantage of using a buck-boost solution is regulating the output voltage over the full power source voltage range. Buck-boost converter solutions usually have lower efficiency and a larger footprint than buck converter solutions.

Learn More About Intersil's ISL911xx Family of Buck-Boost/Boost Regulators »

Find Products

Looking for a buck-boost converter? Here are some online tools to help you get started:

Reference Designs & Evaluation Platforms

The ISL91107IRN-EVZ and ISL91107IRA-EVZ allow quick evaluation of the high performance features of ISL91107IR buck-boost regulator.
The ISL91127IRN-EVZ and ISL91127IRA-EVZ allow quick evaluation of the high performance features of ISL91127IR buck-boost regulators.
The ISL9120IIx-EVZ and ISL9120IRx-EVZ evaluates the features of the ISL9120 and ISL9120IR compact high efficiency low power buck-boost regulators.
ISL9238EVAL1Z
  EVAL BOARD
ISL9238EVAL1Z demonstrates ISL9238, a buck-boost charger with high efficiency and fast transient response for a variety of industrial applications.
The ISL91107IRN-EVZ and ISL91107IRA-EVZ allow quick evaluation of the high performance features of ISL91107IR buck-boost regulator.
The ISL91127IRN-EVZ and ISL91127IRA-EVZ allow quick evaluation of the high performance features of ISL91127IR buck-boost regulators.
The ISL9120IIx-EVZ and ISL9120IRx-EVZ evaluates the features of the ISL9120 and ISL9120IR compact high efficiency low power buck-boost regulators.
ISL9238EVAL1Z
  EVAL BOARD
ISL9238EVAL1Z demonstrates ISL9238, a buck-boost charger with high efficiency and fast transient response for a variety of industrial applications.
The ISL91107IRN-EVZ and ISL91107IRA-EVZ allow quick evaluation of the high performance features of ISL91107IR buck-boost regulator.
The ISL91127IRN-EVZ and ISL91127IRA-EVZ allow quick evaluation of the high performance features of ISL91127IR buck-boost regulators.
The ISL9120IIx-EVZ and ISL9120IRx-EVZ evaluates the features of the ISL9120 and ISL9120IR compact high efficiency low power buck-boost regulators.
ISL9238EVAL1Z
  EVAL BOARD
ISL9238EVAL1Z demonstrates ISL9238, a buck-boost charger with high efficiency and fast transient response for a variety of industrial applications.
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Input

VIN Min (V)

VIN Max (V)

Output

VOUT (V)

IOUT (A)

 

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