MP174A – NON-ISOLATED OFF-LINE REGULATOR

MP174A Rev. 1.0

www.MonolithicPower.com

15

2/27/2019

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2019 MPS. All Rights Reserved.

APPLICATION INFORMATION

Table 1: Common Topologies Using the MP174A

Topology

Circuit Schematic

Features

High-Side

Buck

1. Non-isolation

2. Positive output

3. Low cost

4. Direct feedback

High-Side

Buck-Boost

1. Non-isolation

2. Negative output

3. Low cost

4. Direct feedback

Boost

1. Non-isolation

2. Positive output

3. Low cost

4. Direct feedback

Flyback

1. Isolation

2. Positive output

3. Low cost

4. Indirect feedback

*

*

T

V

in

+

*

DRAIN

VCC

FB

SOURCE

SOURCE

MP174A

Vo

1

2

3

4

5

MP174A

1

2

3

4

5

DRAIN

VCC

FB

SOURCE

SOURCE

Vin

Vo

MP174A

1

2

3

4

5

DRAIN

VCC

FB

SOURCE

SOURCE

Vin

Vo

MP174A

1

2

3

4

5

DRAIN

FB

SOURCE

SOURCE

Vin

Vo

VCC