Is there anyother circuit can replace BUCK circuit?

[incol]

Hi, everyone
I am designing a circuit which transfers 5.5V voltage to 3.3V, and don't want to use the BUCK , as it needs an inductor. Is there anyother circuit can replace it? And also the efficiency should high. Thanks a lot!

 

[backdoor_]

Use Charge Pump converters.
http://parametric.linear.com/html/inductorless_(charge_pump)_dc|dc_converters

 

[crutschow]

How much 3.3V current do you need?

 

[incol]

the current is 200mA

 

[crutschow]

For 200mA you probably need a buck regulator.

What's wrong with an inductor? The new high frequency buck regulators require very small inductors.

 

[udhay_cit]

Why do you not thinking about linear regulator [LDO] MCP1700T-3302E/TT.... with 0.1v drop...

 

[crutschow]

Why do you not thinking about linear regulator [LDO] MCP1700T-3302E/TT.... with 0.1v drop...

He stated he wanted high efficiency. A linear regulator would have only 60% efficiency.

 

[incol]

yes, I want high efficiency, and inductor will waste too much place

 

[crutschow]

How much space do you have?

 

[ninju]

Whats more important for you? Area or Efficiency? If you don't want to build a discrete circuit, try an IC.
https://www.ti.com/lsds/ti/analog/powermanagement/power_portal.page