THD218

更新时间： 2024-01-12 09:09:40

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		晶体开关晶体管高压
页数	文件大小	规格书
6页	70K
描述
HIGH VOLTAGE FAST-SWITCHING NPN POWER TRANSISTOR

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中文翻译

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技术参数
数据手册

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THD218 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	FLANGE MOUNT, R-PSFM-T3	Reach Compliance Code：	compliant
风险等级：	5.87	Is Samacsys：	N
外壳连接：	ISOLATED	最大集电极电流 (IC)：	7 A
集电极-发射极最大电压：	700 V	配置：	SINGLE WITH BUILT-IN DIODE AND RESISTOR
最小直流电流增益 (hFE)：	5	JESD-30 代码：	R-PSFM-T3
元件数量：	1	端子数量：	3
最高工作温度：	150 °C	封装主体材料：	PLASTIC/EPOXY
封装形状：	RECTANGULAR	封装形式：	FLANGE MOUNT
极性/信道类型：	NPN	功耗环境最大值：	50 W
最大功率耗散 (Abs)：	50 W	认证状态：	Not Qualified
子类别：	Other Transistors	表面贴装：	NO
端子形式：	THROUGH-HOLE	端子位置：	SINGLE
晶体管应用：	SWITCHING	晶体管元件材料：	SILICON
VCEsat-Max：	1.5 V	Base Number Matches：	1

THD218 数据手册

THD218DHI

Reverse Biased SOA

BASE DRIVE INFORMATION

In order to saturate the power switch and reduce

conduction losses, adequate direct base current

I_B1has to be provided for the lowest gain h_FEat

100 C (line scan phase). On the other hand,

negative base current I_B2must be provided to

figure 1.

Inductance L₁serves to control the slope of the

negative base current I_B2to recombine the

excess carrier in the collector when base current

is still present, this would avoid any tailing

phenomenonin the collector current.

turn off the power transistor (retrace phase).

Most of the dissipation, in the deflection

application, occurs at switch-off. Therefore it is

essential to determine the value of I_B2which

minimizes power losses, fall time t_fand,

consequently, T_j. A new set of curves have been

defined to give total power losses, t_sand t_fas a

function of I_B2at both 16 KHz and 32 KHz

scanning frequencies for choosing the optimum

negative drive. The test circuit is illustrated in

The values of L and C are calculated from the

following equations:

√L C

L (I )²= C (V_CEfly

)

ω = 2 πf =

Where I_C= operating collector current, V_CEfly

flyback voltage, f= frequency of oscillation during

retrace.

Figure 1: Inductive Load Switching Test Circuit.

4/6

1 2 345 6

中文翻译

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