MP023

Primary Side CC/CV Flyback Controller with

High Voltage Current Source and

Programmable Cable Compensation

MP023 Rev. 1.1

www.MonolithicPower.com

1

7/18/2016

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© 2016 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP023 is an offline, primary-side controller

that provides accurate, constant voltage and

constant current regulation without the need of

an optocoupler or secondary feedback circuit. It

uses an integrated 700V current source to

achieve quick start-up.

The MP023's variable off-time control allows its

flyback converter to operate in discontinuous

conduction mode (DCM). The MP023’s current

limit and maximum secondary duty cycle are

programmable, making the output current easily

set. The FB voltage sensing point is also

programmable and is able to set different

switching frequencies.

The internal high-voltage start-up current

source and power-saving technologies limit the

no-load power consumption to less than 30mW.

Full protection features include VCC under-

voltage lockout (UVLO), overload protection

(OLP), over-temperature protection (OTP),

open loop protection (OCkP), and over-voltage

protection (OVP).

The MP023's variable switching frequency

method provides a natural spectrum for shaping

a smooth EMI signature, which is suitable for

offline,

low-power

battery

chargers

and

adapters.

The MP023 requires a minimal number of

readily

available,

standard,

external

components and is available in a SOIC8-7A

package.

FEATURES

 Primary-Side Control without Optocoupler or

Secondary Feedback Circuit

 Precise Constant Current and Constant

Voltage Control (CC/CV)

 Variable Off-Time Peak Current Control

 700V High-Voltage Current Source

 20mW No-Load Power Consumption

 Programmable Cable Compensation

 Programmable Current Limit and Maximum

Secondary Duty Cycle

 Programmable FB Voltage Sensing Point

 Multiple Protection Features: OVP, OCkP,

OLP, OTP, VCC UVLO

 Low Cost and Simple External Circuit

 Available in a SOIC8-7A Package

APPLICATIONS

 Appliance Power Supplies

 Adapters for Handheld Electronics

 Standby and Auxiliary Power Supplies

All MPS parts are lead-free, halogen-free, and adhere to the RoHS

directive. For MPS green status, please visit the MPS website under

Quality Assurance. “MPS” and “The Future of Analog IC Technology” are

registered trademarks of Monolithic Power Systems, Inc.