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解决方案
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  • The STCH03 current-mode controller is designed for an offline quasi-resonant ZVS (zero-voltage-switching at switch turn-on) flyback converter.

    It combines a high-performance low-voltage PWM controller chip and a 650V HV start-up cell in the same package.
    Constant output voltage (CV) regulation loop is achieved by secondary side feedback, the output voltage information is transfered via an optocoupler on the FB pin of the STCH03 to get the selected output voltage.
    The device features a unique characteristic: it is capable of providing constant output current regulation (CC) using primary-sensing feedback. This eliminates the need for dedicated current reference IC, as well as the current sensor, still maintaining quite accurate output current regulation.
    The quasi-resonant operation is achieved by means of a transformer demagnetization sensing input that triggers the turn-on of the MOSFET, connected on the ZCD pin. This input serves also as both output voltage monitor, to achieve mains-independent CC regulation (line voltage feedforward), and to implement OVP and UVP.
    The maximum switching frequency is top-limited below 154 kHz, so that at the medium-light load a special function automatically lowers the operating frequency whilst still maintaining the operation as close to ZVS as possible. At the very light load, the device enters a controlled burst-mode operation that, along with the zero-power high-voltage start-up circuit, the extremely low quiescent current of the device, helps minimize the residual input consumption, thus meeting the requirements of the most stringent standards.
    During the burst-mode operation the VDD supply voltage has to be guaranteed by optimum application design. In any case, an innovative adaptive UVLO helps to minimize the issues related to the fluctuations of the auxiliary biasing voltage with the output load, due to parasitic capacitance of the transformer and further reducing the IC's bias consumption.
    In addition to these functions that optimize power handling under different operating conditions, the device also offers the output overvoltage protection (OVP), overtemperature protection (OTP), hiccup-mode protection that is invoked when the transformer saturates or the secondary diode fails short and the output undervoltage protection (UVP) that limits the average output current in case of the output short-circuit. All the protections are auto-restart mode, except the OVP protection, that can be internally selected to be auto-restart or latched mode.
    The embedded leading-edge blanking on the current sense input for greater noise immunity completes the equipment of this device.

    主要特性

    • Advanced power management for ultra-low standby power consumption (under 10 mW at 230 VAC)
    • Fully integrated primary side constant current output regulation (CC)
    • 650 V embedded HV start-up circuit with zero power consumption.
    • Quasi-resonant (QR) zero-voltage-switching (ZVS) operation
    • Accurate and adjustable output OVP with options auto-restart (STCH03) or latched (STCH03L) after fault
    • Output undervoltage protection (UVP) with auto-restart
    • Input voltage feedforward compensation for mains-independent CC regulation
    • Embedded thermal shutdown
    • Intelligent frequency jitter for EMI suppression
    • SO8 package

适合您的资源

All tools & software

    • 产品型号
      状态
      描述
      类型
      供应商

      EVAL-STCH03-45W

      批量生产

      基于STCH03 QR反激式控制器和SRK1000B自适应同步整流控制器的45W / 12V电源

      电源和功率转换器解决方案评估板 --

      EVL80WLED-STCH03

      批量生产

      EVL80WLED-STCH03:带STCH03的80W-1A初级侧电流环路控制LED驱动器,用于街道照明应用

      电源和功率转换器解决方案评估板 --

      EVLSTCH03-36W-SR

      批量生产

      基于STCH03L和SRK1000B的36W USB充电器,可选输出电压(5-9-12 V @3A)

      电源和功率转换器解决方案评估板 --

      EVLSTCH03-45WPD

      批量生产

      45W USB Type-C Power Delivery 3.0 adapter based on STCH03, SRK1001 and STUSB4761

      电源和功率转换器解决方案评估板 --

      STEVAL-SMACH15V1

      批量生产

      15 W 5 V输出USB适配器评估板,具有STCH03 CC模式初级侧感应开关控制器

      电源和功率转换器解决方案评估板 ST

      STEVAL-USBPD45C

      批量生产

      基于STCH03、STM32F051和STUSB1602A的45 W USB Type-C™ Power Delivery适配器

      电源和功率转换器解决方案评估板 ST
      EVAL-STCH03-45W

      描述:

      基于STCH03 QR反激式控制器和SRK1000B自适应同步整流控制器的45W / 12V电源
      EVL80WLED-STCH03

      描述:

      EVL80WLED-STCH03:带STCH03的80W-1A初级侧电流环路控制LED驱动器,用于街道照明应用
      EVLSTCH03-36W-SR

      描述:

      基于STCH03L和SRK1000B的36W USB充电器,可选输出电压(5-9-12 V @3A)
      EVLSTCH03-45WPD

      描述:

      45W USB Type-C Power Delivery 3.0 adapter based on STCH03, SRK1001 and STUSB4761
      STEVAL-SMACH15V1

      描述:

      15 W 5 V输出USB适配器评估板,具有STCH03 CC模式初级侧感应开关控制器
      STEVAL-USBPD45C

      描述:

      基于STCH03、STM32F051和STUSB1602A的45 W USB Type-C™ Power Delivery适配器

CAD/EDA Symbols, Footprints and Models

质量与可靠性

产品型号 Marketing Status 封装 等级规格 符合RoHS级别 材料声明**
STCH03
批量生产
SO-8 工业 Ecopack2
STCH03L
批量生产
SO-8 工业 Ecopack2
STCH03LTR
批量生产
SO-8 工业 Ecopack2
STCH03TR
批量生产
SO-8 工业 Ecopack2

STCH03

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STCH03L

Package:

SO-8

Material Declaration**:

Marketing Status

批量生产

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STCH03LTR

Package:

SO-8

Material Declaration**:

Marketing Status

批量生产

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STCH03TR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此,它们可能不是100%适用于特定的设备。有关特定设备的信息,请联系 销售支持

eDesignSuite

转换器

Input

V This option is required. And must be less than or equal to Volt. Max [V]
V This option is required. And must be greater than or equal to Volt. Min [V]

Output

V This option is required and must be a number.
A This option is required and must be a number.

样片和购买

产品型号
从分销商订购
从ST订购
供货状态
ECCN (US)
ECCN (EU)
包装类型
封装
温度(ºC) Country of Origin
Budgetary Price (US$)*/Qty
最小值
最大值
STCH03TR Available at 6 distributors

...的经销商可用性STCH03TR

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 2259 1 马上订购
RS COMPONENTS EUROPE 40 1 马上订购
AVNET AMERICA 2500 0 马上订购
ARROW EUROPE 2500 0 马上订购
MOUSER WORLDWIDE 1353 1 马上订购
Farnell Element14 EUROPE 180 1 马上订购

代理商库存报告日期: 2020-09-23

代理商名称

DIGIKEY

库存

2259

Min.Order

1

地区

WORLDWIDE 马上订购

RS COMPONENTS

库存

40

Min.Order

1

地区

EUROPE 马上订购

AVNET

库存

2500

Min.Order

0

地区

AMERICA 马上订购

ARROW

库存

2500

Min.Order

0

地区

EUROPE 马上订购

MOUSER

库存

1353

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

库存

180

Min.Order

1

地区

EUROPE 马上订购

代理商库存报告日期: 2020-09-23

样片和购买 立即购买
批量生产
EAR99 NEC Tape And Reel SO-8 - - CHINA 0.5375 / 1k
STCH03LTR Available at 5 distributors

...的经销商可用性STCH03LTR

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 2476 1 马上订购
AVNET AMERICA 2500 0 马上订购
FUTURE WORLDWIDE 2500 2500 马上订购
MOUSER WORLDWIDE 2489 1 马上订购
Farnell Element14 EUROPE 132 1 马上订购

代理商库存报告日期: 2020-09-23

代理商名称

DIGIKEY

库存

2476

Min.Order

1

地区

WORLDWIDE 马上订购

AVNET

库存

2500

Min.Order

0

地区

AMERICA 马上订购

FUTURE

库存

2500

Min.Order

2500

地区

WORLDWIDE 马上订购

MOUSER

库存

2489

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

库存

132

Min.Order

1

地区

EUROPE 马上订购

代理商库存报告日期: 2020-09-23

样片和购买 立即购买
批量生产
EAR99 NEC Tape And Reel SO-8 - - CHINA 0.5375 / 1k
STCH03 Available at 2 distributors

...的经销商可用性STCH03

代理商名称
地区 库存 最小订购量 第三方链接
ARROW EUROPE 3970 0 马上订购
MOUSER WORLDWIDE 1480 1 马上订购

代理商库存报告日期: 2020-09-23

代理商名称

ARROW

库存

3970

Min.Order

0

地区

EUROPE 马上订购

MOUSER

库存

1480

Min.Order

1

地区

WORLDWIDE 马上订购

代理商库存报告日期: 2020-09-23

样片和购买 立即购买
批量生产
EAR99 NEC Tube SO-8 - - CHINA 0.5375 / 1k
STCH03L 没有经销商,请联系我们的销售办事处
批量生产
EAR99 NEC Tube SO-8 - - CHINA 0.5375 / 1k

STCH03TR

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.5375 / 1k

...的经销商可用性STCH03TR

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 2259 1 马上订购
RS COMPONENTS EUROPE 40 1 马上订购
AVNET AMERICA 2500 0 马上订购
ARROW EUROPE 2500 0 马上订购
MOUSER WORLDWIDE 1353 1 马上订购
Farnell Element14 EUROPE 180 1 马上订购

代理商库存报告日期: 2020-09-23

代理商名称

DIGIKEY

库存

2259

Min.Order

1

地区

WORLDWIDE 马上订购

RS COMPONENTS

库存

40

Min.Order

1

地区

EUROPE 马上订购

AVNET

库存

2500

Min.Order

0

地区

AMERICA 马上订购

ARROW

库存

2500

Min.Order

0

地区

EUROPE 马上订购

MOUSER

库存

1353

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

库存

180

Min.Order

1

地区

EUROPE 马上订购

代理商库存报告日期: 2020-09-23

ECCN (EU)

NEC

包装类型

Tape And Reel

封装

SO-8

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

0.5375 / 1k

Country of Origin

CHINA

STCH03LTR

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.5375 / 1k

...的经销商可用性STCH03LTR

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 2476 1 马上订购
AVNET AMERICA 2500 0 马上订购
FUTURE WORLDWIDE 2500 2500 马上订购
MOUSER WORLDWIDE 2489 1 马上订购
Farnell Element14 EUROPE 132 1 马上订购

代理商库存报告日期: 2020-09-23

代理商名称

DIGIKEY

库存

2476

Min.Order

1

地区

WORLDWIDE 马上订购

AVNET

库存

2500

Min.Order

0

地区

AMERICA 马上订购

FUTURE

库存

2500

Min.Order

2500

地区

WORLDWIDE 马上订购

MOUSER

库存

2489

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

库存

132

Min.Order

1

地区

EUROPE 马上订购

代理商库存报告日期: 2020-09-23

ECCN (EU)

NEC

包装类型

Tape And Reel

封装

SO-8

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

0.5375 / 1k

Country of Origin

CHINA

STCH03

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.5375 / 1k

...的经销商可用性STCH03

代理商名称
地区 库存 最小订购量 第三方链接
ARROW EUROPE 3970 0 马上订购
MOUSER WORLDWIDE 1480 1 马上订购

代理商库存报告日期: 2020-09-23

代理商名称

ARROW

库存

3970

Min.Order

0

地区

EUROPE 马上订购

MOUSER

库存

1480

Min.Order

1

地区

WORLDWIDE 马上订购

代理商库存报告日期: 2020-09-23

ECCN (EU)

NEC

包装类型

Tube

封装

SO-8

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

0.5375 / 1k

Country of Origin

CHINA

STCH03L

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.5375 / 1k

ECCN (EU)

NEC

包装类型

Tube

封装

SO-8

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

0.5375 / 1k

Country of Origin

CHINA

(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商