MP173– NON-ISOLATED OFFLINE REGULATOR

MP173 Rev. 1.0

www.MonolithicPower.com

12

8/19/2015

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

© 2015 MPS. All Rights Reserved.

APPLICATION INFORMATION

Table 1—Common topologies using MP173

Topology

Circuit Schematic

Features

High-side

buck

MP173

1

2

3

4

5

DRAIN

VCC

FB

SOURCE

SOURCE

Vin

Vo

1. No isolation

2. Positive output

3. Low cost

4. Direct feedback

High-side

buck-boost

MP173

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

MP173

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

MP173

1

2

3

4

5

1. Isolation

2. Positive output

3. Low cost

4. Indirect feedback