L6591

批量生产

非对称半桥转换器拓扑的电流模式PWM控制器

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概述
样片和购买
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质量与可靠性
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  • The L6591 is a double-ended PWM controller specific to the soft-switched half bridge topology. It provides complementary PWM control, where the high-side switch is driven ON for a duty cycle D and the low-side switch for a duty cycle 1-D, with D < 50%. An externally programmable deadtime inserted between the turn-off of one switch and the turn-on of the other one guarantees soft-switching and enables high-frequency operation.

    To drive the high-side switch with the bootstrap approach, the IC incorporates a high-voltage floating structure able to withstand more than 600 V with a synchronous-driven high-voltage DMOS that replaces the external fast-recovery bootstrap diode.
    The IC enables the user to set the operating frequency of the converter by means of an externally programmable oscillator: the maximum duty cycle is digitally clipped at 50% by a T-flip-flop, so that the operating frequency is half that of the oscillator.
    At very light load the IC enters a controlled burst mode operation that, along with the built-in non-dissipative high-voltage startup circuit and the low quiescent current, helps keep the consumption from the mains low and is compliant with energy saving recommendations.
    To allow compliance with these standards also in two-stage power-factor-corrected systems, an interface with the PFC controller is provided that enables the pre-regulator to be switched off between one burst and the following one.
    An innovative adaptive UVLO helps minimize the issues related to fluctuations of the self-supply voltage with the output load, due to the transformer's parasitic.
    IC protection functions include: not-latched input undervoltage (brownout), a first-level OCP with delayed shutdown able to protect the system during overload and short-circuit conditions (either auto-restart or latch mode can be selected) and a second-level OCP that latches off the IC when the transformer saturates or one of the secondary diodes fails short. Finally, a latched disable function allows easy implementation of OTP or OVP.
    Programmable soft-start and digital leading-edge blanking on the current sense input pin complete the equipment of the IC.

    主要特性

    • Complementary PWM control for soft-switched half bridge with programmable deadtime
    • Up to 500 kHz operating frequency
    • Onboard high-voltage startup
    • Advanced light load management
    • Adaptive UVLO
    • Pulse-by-pulse OCP
    • OLP (latched or autorestart)
    • Transformer saturation detection
    • Interface with PFC controller
    • Latched disable input
    • Input for power-on sequencing or brownout protection
    • Programmable soft-start
    • 4% precision external reference
    • 600 V-rail compatible high-side gate driver with integrated bootstrap diode and high dV/dt immunity
    • SO16N package

电路原理图

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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**
L6591
批量生产
SO-16 工业 Ecopack2
L6591TR
批量生产
SO-16 工业 Ecopack2

L6591

Package:

SO-16

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6591TR

Package:

SO-16

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SO-16

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

样片和购买

产品型号
从分销商订购
从ST订购
封装
包装类型
供货状态
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
L6591TR Available at 2 distributors

...的经销商可用性L6591TR

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 2493 1 马上订购
MOUSER WORLDWIDE 2426 1 马上订购

代理商库存报告日期: 2020-07-13

代理商名称

DIGIKEY

库存

2493

Min.Order

1

地区

WORLDWIDE 马上订购

MOUSER

库存

2426

Min.Order

1

地区

WORLDWIDE 马上订购

代理商库存报告日期: 2020-07-13

获取样片 SO-16 Tape And Reel
批量生产
EAR99 PHILIPPINES 1.362 / 1k
L6591 Available at 3 distributors

...的经销商可用性L6591

代理商名称
地区 库存 最小订购量 第三方链接
Newark Element14 AMERICA 221 0 马上订购
MOUSER WORLDWIDE 744 1 马上订购
Farnell Element14 EUROPE 570 1 马上订购

代理商库存报告日期: 2020-07-13

代理商名称

Newark Element14

库存

221

Min.Order

0

地区

AMERICA 马上订购

MOUSER

库存

744

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

库存

570

Min.Order

1

地区

EUROPE 马上订购

代理商库存报告日期: 2020-07-13

立即购买 SO-16 Tube
批量生产
EAR99 PHILIPPINES 1.362 / 1k

L6591TR

封装

SO-16

包装类型

Tape And Reel

Budgetary Price (US$)*/Qty

1.362 / 1k

...的经销商可用性L6591TR

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 2493 1 马上订购
MOUSER WORLDWIDE 2426 1 马上订购

代理商库存报告日期: 2020-07-13

代理商名称

DIGIKEY

库存

2493

Min.Order

1

地区

WORLDWIDE 马上订购

MOUSER

库存

2426

Min.Order

1

地区

WORLDWIDE 马上订购

代理商库存报告日期: 2020-07-13

供货状态

批量生产

Budgetary Price (US$)* / Qty

1.362 / 1k

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

L6591

封装

SO-16

包装类型

Tube

Budgetary Price (US$)*/Qty

1.362 / 1k

...的经销商可用性L6591

代理商名称
地区 库存 最小订购量 第三方链接
Newark Element14 AMERICA 221 0 马上订购
MOUSER WORLDWIDE 744 1 马上订购
Farnell Element14 EUROPE 570 1 马上订购

代理商库存报告日期: 2020-07-13

代理商名称

Newark Element14

库存

221

Min.Order

0

地区

AMERICA 马上订购

MOUSER

库存

744

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

库存

570

Min.Order

1

地区

EUROPE 马上订购

代理商库存报告日期: 2020-07-13

供货状态

批量生产

Budgetary Price (US$)* / Qty

1.362 / 1k

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

(*) 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