- 您现在的位置：买卖IC网 > PDF目录359132 > MC33486 (飞思卡尔半导体(中国)有限公司) Dual High Side Switch for H-Bridge Automotive Applications(适合于H桥自动应用的双高端开关) PDF资料下载
参数资料
| 型号： | MC33486 |
| 厂商： | 飞思卡尔半导体(中国)有限公司 |
| 英文描述： | Dual High Side Switch for H-Bridge Automotive Applications(适合于H桥自动应用的双高端开关) |
| 中文描述： | 双通道高边开关的H -桥汽车应用（适合于?桥自动应用的双高端开关） |
| 文件页数： | 8/9页 |
| 文件大小： | 392K |
| 代理商： | MC33486 |
MC33486
Dual High Side Switch for H-Bridge Automotive Applications
8
The use of this model is similar to the electrical Ohm law (voltage = resistance X current), where:
. Voltage represents temperature
. Current represents power dissipated by the device
. Resistance represents thermal resistance.
We finally got :
Temperature or delta temperature = Power Dissipation times Thermal resistance, that is :
°
C = W
°
x C/W.
Any node temperature can easily be calculated knowing the amount of power flowing through the thermal resistances.
Example :
1. Numerical value.
. Junction to case thermal resistance : 2
°
C/W (Rthjc)
. Power into the switch : assuming the device is driving 8amps at 150
°
C junction temperature (Rdson at 150
°
C is 40m
) the
total power dissipation is : 0.04*8*8 = 2.56W
. Case to ambient thermal resistance (Rthca) : 20
°
C/W
2. Results.
. Junction to case delta temp : 5
°
C (2.5W x 2
°
C/W)
. Case delta temp from ambient : 50
°
C (20
°
C/W x 2.5W)
. Actual junction temperature node will be :
50
°
C + 5
°
C = 55
°
C above the ambient temperature.
Assuming an 85
°
C ambient temperature, the junction temperature is a t : 85 + 55 = 140
°
C.
The above example take into account the junction to ambient thermal resistance, assuming that the ambient temp is 85
°
C.
In the case where the device plus its printed circuit board are located inside a module, the ambient temp of the module should
be taken into account. Or an additional thermal resistance from inside module to external ambient temperature must be added.
The calculation method remains the same.
The low side block is packaged into D
2
PAK or DPAK package. Thermal resistance junction to case is approx. 2
°
C/W. The
junction to ambient thermal resistance follows the same rules as for the high side block, and is in the same range.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
n
.
相关PDF资料 |
PDF描述 |
|---|---|
| MC33661 | LIN Enhanced Physical Interface(LIN网增强型物理接口) |
| MC33689 | System Basis Chip with LIN transceiver(带LIN收发器的系统基片) |
| MC33701 | 1.5 A Switch-Mode Power Supply with Linear Regulator(1.5 A开关方式电源，带线性稳压器) |
| MC33702 | 3.0 A Switch-Mode Power Supply with Linear Regulator(3.0 A开关方式电源，带线性稳压器) |
| MC33742 | System Basis Chip (SBC) with Enhanced High-Speed CAN Transceiver(带增强型高速CAN收发器的系统基片) |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC33486ADH | 功能描述:电源开关 IC - 配电 DUALHIGH-SIDE BRIDGE RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| MC33486ADHR2 | 功能描述:电源开关 IC - 配电 DUALHIGH-SIDE BRIDGE RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| MC33486DH | 功能描述:IC SWITCH DUAL H-SIDE 20-HSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 电机和风扇控制器，驱动器 系列:- 标准包装:1 系列:- 应用:直流电机驱动器，步进电机驱动器 评估套件:- 输出数:1 或 2 电流 - 输出:750mA 电压 - 负载:10 V ~ 40 V 电源电压:4.5 V ~ 5.5 V 工作温度:-20°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-BFSOP（0.295"，7.50mm 宽） 供应商设备封装:24-SOP 包装:Digi-Reel® 其它名称:MTS62C19A-HS105DKR |
| MC33493ADTBE | 功能描述:射频发射器 UHF TRANSMITTER RoHS:否 制造商:Micrel 类型:ASK Transmitter 封装 / 箱体:SOT-23-6 工作频率:300 MHz to 450 MHz 封装:Reel |
| MC33493ADTBER2 | 功能描述:射频发射器 UHF TRANSMITTER RoHS:否 制造商:Micrel 类型:ASK Transmitter 封装 / 箱体:SOT-23-6 工作频率:300 MHz to 450 MHz 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。