MP157

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Offline Primary Side 6W Regulator



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Product Description

MP157 is a primary-side regulator providing accurate constant voltage (CV) regulation without the Opto-coupler. It supports Buck, Buck-Boost, Boost and Flyback topologies. A 500V MOSFET is integrated in the regulator, so very simple structure and low cost can be achieved. These features make MP157 an ideal solution for off-line low power applications.  Typical applications include home appliance, standby power and industrial control. MP157 is a green mode operation regulator. When the load decreases, the peak current and the switching frequency decrease with the load. As a result, it still offers excellent efficiency performance at light load, thus better average efficiency is achieved. MP157 features various protections like Thermal Shutdown (TSD), VCC under Voltage Lockout (UVLO), Over Load Protection (OLP), Short Circuit Protection (SCP), Open Loop Protection. MP157 is available in the TSOT23-5 and SOIC8 packages.

Product Features

  • Primary-side constant voltage (CV) control, supporting Buck, Buck-Boost, Boost and Flyback topologies
  • Integrated 500V/10Ω MOSFET
  • < 100mW No-load power consumption
  • Up to 6W output power
  • Maximum discontinuous conduction mode (DCM) output current less than 225mA, maximum continuous conduction mode (CCM) output current less than 360mA
  • Low Vcc Operating Current
  • Frequency Foldback
  • Limited maximum frequency
  • Peak Current  Compression
  • Internal High Voltage Current Source
  • Internal 400ns Leading Edge Blanking
  • Thermal Shutdown (auto restart)
  • VCC Under Voltage Lockout with Hysteresis (UVLO)
  • Timer based Over Load Protection
  • Short Circuit Protection
  • Open Loop Protection

Parametrics

  • Vac (max) (V)265
  • Vfb (V)2.5
  • ICC Latch (typ) (µA)16
  • Vbr (V)500
  • Rds(on) (Ω)10
  • fsw (max) (kHz)64
  • Isw Limit (mA)640
  • Iout (DCM) (max) (mA)225
  • Iout (CCM) (max) (mA)360
  • Pout (max) (W)6
  • Vac (min) (V)20
  • VCC Off (V)3.35
  • Power Range DefinedNo
  • Control MethodOn-Off
  • PackageSOIC-8, TSOT23-5
  • GradeCatalog
  • TypeBuck Regulator
  • VCC Hysteresis (V)0.23
  • Min Off Time (typ) (µs)13.1
  • VCC Restart (V)2.35
  • No-Load Pout (max) (mW)100
  • Iregulator (mA)3.5
  • Ileak (µA)10

Evaluation Kit

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Kit details

The EV157-J-00B Evaluation Board is designed to demonstrate the dual output capabilities of MP157. The MP157 is a primary-side constant voltage regulator.

The EV157-J-00B is typically designed for small appliances which output 18V/0.3A and 5V/0.1A load from 85VAC to 265VAC, 50HZ/60HZ.

The EV157-J-00B has an excellent efficiency and meets IEC61000-4-5 surge immunity and EN55022 conducted EMI requirements. It has multi-protection function as open circuit protection, over load protection, short-circuit protection, and over-temperature protection, etc.

$25.00 + tax


Evaluation Kit

GET THIS KIT

Kit details

The EV157-S-00A Evaluation Board is designed to demonstrate the capabilities of MP157GS. MP157 is a primary side regulator providing accurate constant voltage (CV) regulation without the Opto-coupler. It supports Buck, Buck-Boost, Boost and Flyback topologies.

The EV157-S-00A Evaluation Board is designed as Buck application. The EV157-S-00A typically drives a 4.2W with a 12VTYP, 350mA load from 85VAC to 265VAC, at 50Hz.

The EV157-S-00A has excellent efficiency and meets EN55022conducted EMI requirements. It has multiple protections, including open-circuit protection, short-circuit protection, over load protection and over-temperature protection, etc.

MP157GS is available in the SOIC8 packages.

$25.00 + tax