With the increasing performance of automotive electronic devices, it is becoming essential to increase the current capability and the number of outputs of power supply ICs. To address these needs, Toshiba offers system power supply ICs with an integrated DC/DC converter. The latest addition to our portfolio of system power supply ICs, the TB9045FNG Series, is ideal for power supply applications for electronic power steering systems that require an extremely high level of safety.
越来越多的汽车安全关键系统要求符合ASIL D[注1],比如电动助力转向(EPS)和制动系统,ASIL D是ISO 26262功能安全标准中所规定的最高的汽车安全完整性等级。
新IC集成了各种故障检测功能以监测和防止IC自身故障,比如对于电源电路的高压、低压检测和过热检测,另外还集成了一个看门狗定时器以监测外部微机的故障。我们还结合了用于检测故障检测电路中潜在故障的初始诊断电路以保证更高的功能安全性。
注1:ASIL:汽车安全完整性等级
低电压操作(VB:2.7V~),3通道传感器用电源
适用于ASIL D系统的安全机构
Low-voltage operation (VB: 2.7V~), 3ch Power Supply for Sensors
Available with an output voltage of 1.1, 1.2 , 1.25 and 1.5 for MCU Core
Safety mechanisms suitable for ASIL D systems
Part Number | Functions | Output Voltage Typ. (V) |
Output Current (mA) |
Input Voltage Max (V) |
Power Dissipation Max (W) |
Remarks | Package | Supply Voltage (V) |
Rel. Level |
---|---|---|---|---|---|---|---|---|---|
TB9044AFNG* | CPU voltage regulator DC-DC converter & LDO Watchdog timer On-chip SPI |
5 5 5 5 |
400 100 100 100 |
40 (1 sec.) |
3.84 |
|
HTSSOP48 | 2.7 to 18 | AEC-Q100 qualified |
TB9045FNG Series |
CPU voltage regulator DC-DC converter & LDO Watchdog timer On-chip SPI |
1.1/1.2/1.25/1.5 5 5 5 5 |
800 |
40 (1 sec.) |
3.84 |
|
HTSSOP48 | 2.7 to 18 | AEC-Q100 qualified |
*:研发中,WDT:看门狗定时器,POR:上电复位
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