TM PFC with X-cap discharge and LLC resonant combo controller

Download datasheet

Order from our eStore and our distributors

Buy now
Overview
Tools & Software
Resources
Solutions
Quality & Reliability
Sales Briefcase
eDesignSuite
Get Started
Sample & Buy
Partner products
  • The STCMB1 device embodies a transition mode (TM) PFC, a high voltage double-ended controller for LLC resonant half-bridge, an 800 V-rated high voltage section and the glue logic that supervises the operation of these three blocks.

    The PFC section uses a proprietary constant on-time control methodology that does not require a sinusoidal input reference, thereby reducing the system cost and external component count.
    It includes also a complete set of protections: a cycle-by-cycle overcurrent (OCP), an output overvoltage (OVP), a feedback failure (FFP, latch-mode), an ac brown-out, boost inductor saturation and inrush current detection both at the start-up and after mains sags or missing cycles.
    The half-bridge (HB) section provides two complementary outputs that drive the high-side and low-side MOSFET 180° out-of-phase. The deadtime inserted between the turn-off of an either switch and the turn-on of the other is automatically adjusted to ensure zero voltage switching and higher efficiency from low to full load.
    A proprietary control method, timeshift control - TSC, improves dynamic behavior and input ripple rejection resulting in a cleaner output voltage.
    At the light-load the IC can be forced to enter a controlled burst mode operation where both the HB and the PFC work intermittently synchronized one to another. This helps to reduce the average switching frequency, thus keeping converter input consumption as low as possible.
    At the start-up, in addition to the traditional soft-start based on the frequency-shift, a proprietary hard switching prevention (HSP) function controls the half-bridge to prevent hard switching in the initial cycles. Additionally, the HSP function prevents the converter from working in or too close to the capacitive mode to ensure soft-switching.
    The HB is provided with a two-level OCP. The first level is with the frequency shift and delayed shutdown with an automatic restart. A fast shutdown with an automatic restart occurs if this first-level protection cannot limit the primary current. Finally, the device embeds the logic circuitry to coordinate the operation of the PFC, HB and HV start-up generator; in particular: the power-on/off sequencing, X-capacitor discharge, fault handling and synchronous burst mode operation. For the application debug purposes it is possible to externally disable one section at a time and have the other section working standalone.

    Key Features

    • Common features
      • SO20W package
      • 800 V high voltage start-up with integrated input voltage sensing
      • Active input filter capacitor discharge circuitry for reduced standby power compliant with IEC 62368-1 and UL Demko certified
      • Independent debug mode for both converters
    • PFC controller features
      • Enhanced constant on-time PFC with input voltage feedforward, THD optimizer
      • Complete set of protections: ac brown-in/out, inrush control, OVP, OCP, inductor saturation, feedback disconnection
    • LLC controller features
      • Proprietary timeshift control for improved input ripple rejection and dynamic response
      • Half-bridge operation up to 750 kHz with self-adjusting deadtime
      • Complete set of protections: dc brown-out, two-level OCP, hard switching prevention (HSP) function for anti-capacitive mode protection and safe start-up
      • Synchronous burst mode operation with PFC enhances light-load efficiency

Sample & Buy

Part Number
Package
Packing Type
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Order from Distributors
Order from ST
STCMB1 SO-20 Tube
Active
1.337 1000 EAR99 MALAYSIA Check Availability

Distributor availability ofSTCMB1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 995 1 Order Now
RS COMPONENTS EUROPE 910 1 Order Now
MOUSER WORLDWIDE 1130 1 Order Now
Farnell Element14 EUROPE 24 1 Order Now

Distributor reported inventory date: 2019-10-21

Distributor Name

DIGIKEY

Stock

995

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

910

Min.Order

1

Region

EUROPE Order Now

MOUSER

Stock

1130

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

24

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-21

Buy now
STCMB1TR SO-20 Tape And Reel
Active
1.337 1000 EAR99 MALAYSIA Check Availability

Distributor availability ofSTCMB1TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 811 1 Order Now
AVNET AMERICA 1000 0 Order Now
MOUSER WORLDWIDE 1125 1 Order Now

Distributor reported inventory date: 2019-10-21

Distributor Name

DIGIKEY

Stock

811

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

1000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

1125

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-10-21

Buy now

STCMB1

Package

SO-20

Packing Type

Tube

Unit Price (US$)

1.337*

Distributor availability ofSTCMB1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 995 1 Order Now
RS COMPONENTS EUROPE 910 1 Order Now
MOUSER WORLDWIDE 1130 1 Order Now
Farnell Element14 EUROPE 24 1 Order Now

Distributor reported inventory date: 2019-10-21

Distributor Name

DIGIKEY

Stock

995

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

910

Min.Order

1

Region

EUROPE Order Now

MOUSER

Stock

1130

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

24

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-21

Marketing Status

Active

Unit Price (US$)

1.337

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STCMB1TR

Package

SO-20

Packing Type

Tape And Reel

Unit Price (US$)

1.337*

Distributor availability ofSTCMB1TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 811 1 Order Now
AVNET AMERICA 1000 0 Order Now
MOUSER WORLDWIDE 1125 1 Order Now

Distributor reported inventory date: 2019-10-21

Distributor Name

DIGIKEY

Stock

811

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

1000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

1125

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-10-21

Marketing Status

Active

Unit Price (US$)

1.337

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Education

This product is labeled Sustainable Technology.

Recommended for you

Related Applications

LED Lighting and Controls

Power Supplies and Converters

Smart Farming

Evaluation Tools

    • Part Number

      150 V - 1 A LED driver using STCMB1

      19 V - 90 W adapter based on the STCMB1, TM PFC and HB LLC combo controller

      12 V - 210 W adapter based on STCMB1, combo TM PFC and HB LLC

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS11511
      TM PFC with X-cap discharge and LLC resonant combo controller
      4.0
      2.23 MB
      PDF
      DS11511

      TM PFC with X-cap discharge and LLC resonant combo controller

    • Description Version Size Action
      AN5034
      12 V - 210 W converter based on STCMB1, combo TM PFC, HB LLC and SRK2001, adaptive SR controller
      1.0
      6.38 MB
      PDF
      AN5035
      19 V - 90 W adapter based on the STCMB1, combo TM PFC and HB LLC
      2.0
      1.41 MB
      PDF
      AN5034

      12 V - 210 W converter based on STCMB1, combo TM PFC, HB LLC and SRK2001, adaptive SR controller

      AN5035

      19 V - 90 W adapter based on the STCMB1, combo TM PFC and HB LLC

    • Description Version Size Action
      AN5034
      12 V - 210 W converter based on STCMB1, combo TM PFC, HB LLC and SRK2001, adaptive SR controller
      1.0
      6.38 MB
      PDF
      AN5106
      150 V – 150 W LED driver using the STCMB1 transition mode PFC and HBR resonant tank combo controller
      2.0
      3.75 MB
      PDF
      AN5035
      19 V - 90 W adapter based on the STCMB1, combo TM PFC and HB LLC
      2.0
      1.41 MB
      PDF
      AN5034

      12 V - 210 W converter based on STCMB1, combo TM PFC, HB LLC and SRK2001, adaptive SR controller

      AN5106

      150 V – 150 W LED driver using the STCMB1 transition mode PFC and HBR resonant tank combo controller

      AN5035

      19 V - 90 W adapter based on the STCMB1, combo TM PFC and HB LLC

Presentations & Training Material

    • Description Version Size Action
      Primary side regulation controllers portfolio
      1.1 MB
      PDF

      Primary side regulation controllers portfolio

Publications and Collaterals

    • Description Version Size Action
      Power Management Guide 06.2019
      5.5 MB
      PDF

      Power Management Guide

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STCMB1
Active
SO-20 Industrial Ecopack2
STCMB1TR
Active
SO-20 Industrial Ecopack2

STCMB1

Package:

SO-20

Material Declaration**:

Marketing Status

Active

Package

SO-20

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STCMB1TR

Package:

SO-20

Material Declaration**:

Marketing Status

Active

Package

SO-20

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.