MP174 – NON-ISOLATED OFF-LINE REGULATOR

MP174 Rev. 1.01

www.MonolithicPower.com

14

8/18/2016

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© 2016 MPS. All Rights Reserved.

APPLICATION INFORMATION

Table 1: Common Topologies Using MP174

Topology

Circuit Schematic

Features

High-Side

Buck

MP174

1

2

3

4

5

DRAIN

FB

SOURCE

SOURCE

Vin

Vo

VCC

1. No-isolation,

2. Positive output

3. Low cost

4. Direct feedback

High-Side

Buck-Boost

MP174

1

2

3

4

5

DRAIN

VCC

FB

SOURCE

SOURCE

Vin

Vo

1. No-isolation,

2. Negative output

3. Low cost

4. Direct feedback

Boost

MP174

1

2

3

4

5

DRAIN

VCC

FB

SOURCE

SOURCE

Vin

Vo

1. No-isolation,

2. Positive output

3. Low cost

4. Direct feedback

Flyback

*

*

T

V

in

+

*

DRAIN

VCC

FB

SOURCE

SOURCE

MP174

Vo

1

2

3

4

5

1. Isolation,

2. Positive output

3. Low cost

4. Indirect feedback