MP174A

700V, Non-Isolated Offline Regulator, Up to 400mA Output Current with Improved EMI Performance

Datasheet

Description

The MP174A is a primary-side regulator that provides accurate constant voltage (CV) regulation without an opto-coupler. It supports buck, buck-boost, boost, and flyback topologies. It has an integrated 700V MOSFET to simplify the structure and reduce costs. These features make it an ideal regulator for offline, low-power applications such as home appliances and standby power.

The device is a green mode operation regulator. Both the peak current and switching frequency decrease as the load decreases. This feature provides excellent efficiency at light-load and improves the overall average efficiency.

The MP174A has various protection features, including thermal shutdown (OTP), VCC under-voltage lockout (UVLO), over-load protection (OLP), short-circuit protection (SCP), and open-loop detection. It is available in small TSOT23-5 and SOIC-8 packages.

Features & Benefits

Primary-Side CV Control, Supporting Buck, Buck-Boost, Boost, and Flyback Topologies
Integrated 700V/13.5Ω MOSFET and Current Source
<30mW No-Load Power Consumption
Up to 5W Output Power
Maximum DCM Output Current Less than 250mA
Maximum CCM Output Current Less than 400mA
Low VCC Operating Current
Frequency Foldback
Limited Maximum Frequency
Peak-Current Compression
Internally Biased VCC
OTP, UVLO, OLP, SCP, Open-Loop Detection
Available in TSOT23-5 and SOIC-8 Packages

Active Part Numbers:

MP174AGJ-Z MP174AGS-P MP174AGS-Z

Evaluation Tools

EV174A-J-00A Evaluation Kit Universal Input, Non-Isolated Off-Line Regulator With Improved EMI Performance Evaluation Board

The EV174A-J-00A Evaluation Board is designed to demonstrate the capabilities of MP174A. The MP174A is a primary-side constant voltage regulator, which provides accurate constant voltage (CV) regulation without Opto-coupler. It supports Buck, Buck-Boost, Boost and Flyback topologies.

The EV174A-J-00A Evaluation Board is designed as Buck application. EV174A-J-00A typically outputs 3.6W with a 12V/300mA load from 85VAC to 265VAC input.

The EV174A-J-00A has excellent efficiency and meets IEC61000-4-5 surge immunity and EN55022 conducted EMI requirements. Most of all, the radiation performance gets improved compared with MP174. MP174A features various protections, including thermal shutdown (TSD), VCC under-voltage lockout (UVLO),over-load protection (OLP), short-circuit protection (SCP), and open loop protection.

MP174AGJ is available in TSOT23-5 package.

$25.00
+ tax

EV174A-S-00A

Universal Input, Non-Isolated Off-Line Regulator With Improved EMI Performance Evaluation Board

Design Resources