Datasheet > C0044BG400SCG

C0044BG400SCG

更新时间： 2023-12-06 20:13:18

品牌	Logo	应用领域
力特 - LITTELFUSE		通信驱动双极性晶体管光纤驱动器
页数	文件大小	规格书
7页	540K
描述
C044BG400 IGBT门极驱动器是一款低功率驱动器，具有板载VCE去饱和检测功能，适合用于对可靠性要求较高的应用。该驱动器具有用于驱动、状态和切换反馈信号的光纤通信接口。具有EMI滤波、

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C0044BG400SCG 数据手册

IGBT Gate Driver Type C0044BG400

Functional Description

Start up behavior

An un-powered gate driver applies impedance to the gate–emitter connection as follows:

Permanent 20kΩ passive resistance (plus possible 20kΩ parallel on “IGBT Interface Board”)

Low impedance by discharged supply capacitors and main amplifier freewheeling diodes.

Separate MOSFET that clamps gate output to minus supply voltage as soon as the difference from positive

supply to negative supply exceeds 3V during power up sequence until “Power Good” is valid.

This way the gate–emitter output is kept in OFF status during power up and power down sequence of the primary side

driver supply. (See Figure 1)

Figure 1: Typical start up sequence

Ch1: Gate voltage at power up condition

Fig 2: Internal PWM signal generation at the output of

special circuit. Optical transmitter driven with sinusoidal

current

Ch1: Weak PWM signal direct at optical receiver (RX) output

Ch2: Recovered PWM ON command (driver internal)

Short Pulse Suppression – Low Light Protection

The optical Receiver (RX) type “versatile Link family” HFBR-2521 (5M-Baud) is followed by a special circuit that not

only ignores short ON or OFF commands, but also filters low light condition in order not to destroy driver or IGBT (within

a t.b.d. range of the signal weakness). Propagation delay time for ON and OFF command is adjusted separately and

well balanced to typical 1.4μsec at good optical signal quality. Depending on low light condition this delay may increase

but will end up in one defined PWM command.

(See Figure .2)

Please note that all optical PWM commands will be symmetrically delayed by this circuit, expressed in the driver

propagation delay time.

V_ce-desatDetection

The switching status of the IGBT is monitored by a current source. The V_CE-desattrip level is adjustable over a wide

range and adjusted to 25V_CE, typically. Propagation delay OFF time is typically 0,3-0,5 μsec (depending on dv/dt of

IGBT switching). The current source is designed to typ. 9 mA, trip level is set to < 6 mA. (Figures 3 and 4). A wide

range of other levels/currents are available on request.

Figure 3: Switch ON command

Figure 4: Switch OFF command

Ch1: Gate voltage at 300nF simulated gate

Ch2: Collector- emitter voltage

Ch1: Gate voltage at 300nF simulated gate

Ch2: Collector- emitter voltage

Ch3: Internal V_CE0signal: Detection of IGBT ON status

Ch3: Internal V_CE0signal: Detection of IGBT OFF status

Data Sheet Type C0044BG400 Issue 4

Page 3 of 7

Dec 2019

1 234 5 6 7

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与C0044BG400SCG相关器件

型号	品牌	描述	获取价格	数据表
C0044BG400SCH	LITTELFUSE	C044BG400 IGBT门极驱动器是一款低功率驱动器，具有板载VCE去饱和检测功能，适	获取价格
C0044BG400SCJ	LITTELFUSE	C044BG400 IGBT门极驱动器是一款低功率驱动器，具有板载VCE去饱和检测功能，适	获取价格
C0044BG400SCK	LITTELFUSE	C044BG400 IGBT门极驱动器是一款低功率驱动器，具有板载VCE去饱和检测功能，适	获取价格
C0044BG400SCL	LITTELFUSE	C044BG400 IGBT门极驱动器是一款低功率驱动器，具有板载VCE去饱和检测功能，适	获取价格
C0044BG400SCM	LITTELFUSE	C044BG400 IGBT门极驱动器是一款低功率驱动器，具有板载VCE去饱和检测功能，适	获取价格
C0044BG400SCN	LITTELFUSE	C044BG400 IGBT门极驱动器是一款低功率驱动器，具有板载VCE去饱和检测功能，适	获取价格

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