BD750L05G-C
50mA, 5.0V, 固定输出, 车载用LDO稳压器
BD750L05G-C
50mA, 5.0V, 固定输出, 车载用LDO稳压器
BD750L05G-C是消耗电流很低的线性稳压器,非常适用于直接连接电池的车载系统。本IC的耐压为45V,输出电流为50mA,静态电流为28μA(Typ),输出电压精度为±2%。另外,本IC还内置过电流保护电路,可防止输出短路等导致的IC损坏;内置过热保护电路,可防止IC因过负载状态等导致的热损坏。输出的相位补偿电容可使用低ESR的陶瓷电容器。
主要规格
功能安全:

特性:
ch
1
Withstand Voltage (Max.)[V]
45
Vin(Min.)[V]
5.6
Vin(Max.)[V]
42
Iout(Max.)[A]
0.05
Vout Type
Fixed
Vout Accuracy
±2.0%
Circuit Current[mA]
0.006
Dropout Voltage (Typ.)[V]
0.26(Io=20mA)
Ripple Rejection [dB]
60
Load Regulation[mV]
5.0(Io=0.1mA to 50mA )
Output Capacitor[µF]
0.5
Shutdown Function
No
Thermal Shut-down
Yes
Over Current Protection
Yes
Over Voltage Protection
No
Under Voltage Lock Out
No
Discharge Function
No
Soft Start
No
Package
SSOP5
Reference Code
SOT23-5
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
125
Common Standard
AEC-Q100 (Automotive Grade)
特点:
- AEC-Q100 Qualified(Grade 1)
- Qualification Planned for Automotive Application
- Over Current Protection(OCP)
- Thermal Shutdown Protection(TSD)
产品概要
背景
近年来,随着ADAS(高级驾驶辅助系统)等的发展,要求为这些应用供电的车载电源系统具有更高的可靠性。因此,越来越多的车载电源系统都开始配备冗余电源,以确保在应用产品的主系统发生异常时,产品的核心功能(辅助微控制器)依然可以继续工作。而冗余电源是一种在原系统中添加的电路,因此要求其必须能够节省空间并且功耗很低。ROHM利用多年来在电源开发领域中积累的专业知识和技术,开发出可用作一次电源的小型化产品。
概要
“BD7xxL05G-C系列”不仅体积小巧(2.9mm×2.8mm),还实现了高耐压(Max.=45V)和低消耗电流(Typ.=6μA),可满足构建需要持续工作的冗余电源时的主要需求。 另外,利用ROHM擅长的模拟控制技术,使得在电池电压剧烈波动的情况下也能确保稳定的输出电压。 在相同条件下进行比较时,普通产品会出现最大超过1.2V的过冲,因此需要通过添加大容量输出电容器等方法来防止电压超过辅助微控制器等后级器件的额定电压。“BD7xxL05G-C系列”的过冲仅为0.1V左右,因此支持输出电容器的小型化。 与使用普通产品的冗余电源电路相比,使用本产品时电路板面积还可缩减约29%,从而能够通过添加更小规模的电路来构建冗余电源。此外,还具有出色的抗干扰能力,在ISO 11452-2辐射抗扰度测试中,输出电压在测试范围内的各个频段几乎都没有波动,从而有助于减少应用产品设计时的抗噪对策工时。


应用示例
在添加电源时,通过使用产品可以实现低功耗并节省空间,因此也适用于冗余电源以外的应用,例如引擎停止后继续工作的电源。
刹车系统
电动助力转向系统
ADAS用ECU
行车记录仪(停车后继续记录)
车身控制模块
电池控制单元
实时时钟(停车后时钟继续工作)
车门把手模块(停车后的车门开关)

参考设计 / 应用评估套件
-

- Reference Design - REF68020
- 2.5kW LLC Converter, DC390Vin, 48Vout
LLC converters are power conversion circuits that utilize resonance phenomena, consisting of a primary-side excitation inductance, resonant inductor, resonant capacitor, switching element, and secondary-side rectifier circuit. By employing soft-switching technologies such as ZVS (Zero Voltage Switching) (primary-side switch) and ZCS (Zero Current Switching) (secondary-side switch), switching losses are significantly reduced, achieving high efficiency and low EMI by suppressing switching noise. They are applicable to a variety of power conversion circuits.
LLC converters that accept DC 400V input are used in applications where the DC voltage is converted from a commercial AC power input via a PFC (Power Factor Correction) and then converted to the voltage required by the system for distribution (server power supplies, industrial power supplies, PV hybrid inverters, ESS, UPS, xEV OBC (onboard charger), etc.), as well as for voltage conversion from the 400V battery of xEVs (xEV DC-DC converters, etc.). The secondary-side full-bridge rectifier circuit is a topology commonly used for relatively high power (up to several tens of kW) and relatively high output voltage (>48V).
This reference design is a DC 390V input, 48V output, 2.5kW LLC converter that incorporates Nuvoton Technology's high-resolution 32-bit MCU (KM1M7CF0) for power control and uses SiC MOSFETs as the primary switching element.
For more details about the board, please contact the following:
https://www.nuvoton.com/applications/power-energy/llc-reference-board/
