ROHM Product Detail

BD750L05G-C
50mA, 5.0V, 固定輸出, 車載用LDO穩壓器

料號 | BD750L05G-CTR
狀態 | 推薦品
封裝 | SSOP5
包裝形式 | Taping
單位數量 | 3000
最小包裝數量 | 3000
RoHS | Yes
 

Description

BD750L05G-C是消耗電流很低的線性穩壓器,非常適用於直接連接電池的車載系統。本IC的耐壓為45V,輸出電流為50mA,靜態電流為28μA(Typ),輸出電壓精度為±2%。另外,本IC還內置過電流保護電路,可防止輸出短路等導致的IC損壞;內置過熱保護電路,可防止IC因過負載狀態等導致的熱損壞。輸出的相位補償電容可使用低ESR的陶瓷電容器。

Product Detail

背景

近年來,隨著ADAS(先進駕駛輔助系統)相關應用的發展,也出現了向這些應用供電的車電系統需具備更高的可靠性的需求。因此,越來越多的車電系統都開始配備冗餘電源,以確保在應用主系統發生異常時,產品的核心功能(輔助微控制器)可以繼續運作。由於冗餘電源是一種在原生系統中額外添加的電路,因此必須儘量節省空間及降低功耗。ROHM利用多年來在電源開發領域中所累積的專業知識和技術,開發出一次側電源的小型化產品。

概要

「BD7xxL05G-C系列」不僅體積小巧(2.9mm×2.8mm),還實現了高耐壓(Max.=45V)和低消耗電流(Typ.=6μA),可滿足構建需要持續運作的冗餘電源的主要需求。另外,利用ROHM擅長的類比控制技術,在電池電壓急遽波動的情況下,也能確保穩定的輸出電壓。在相同條件下比較時,市場競品會出現最大超過1.2V的過衝,因此需要透過追加大容量輸出電容等方法,來防止電壓超過輔助微控制器等後段元件的額定電壓。而「BD7xxL05G-C系列」的過衝僅約0.1V,因此可實現輸出電容的小型化。與市場競品的冗餘電源電路相比,電路板面積還可縮減約29%,能夠以更小規模的電路來構建冗餘電源。此外,還具有出色的抗雜訊能力,在ISO 11452-2輻射抗雜訊測試中,輸出電壓在測試範圍內的各個頻段幾乎都沒有波動,有助減少應用產品的雜訊對策工時。

輸入過渡響應特性
車載電源系統之冗餘電源基板面積比較

應用範例

在追加電源時,使用產品可以確保低功耗並節省空間,因此新產品也適用於冗餘電源以外的應用,例如引擎停止後繼續運作的電源。

刹車系統
電動動力方向盤
ADAS用ECU
行車記錄器(停車後可繼續錄影)

車身控制模組
Battery Control Unit
Real Time Clock(停車後繼續運作)
車門把手模組(停車後車門開關)

應用範例

 

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Specifications

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)

Features

  • AEC-Q100 Qualified(Grade 1)
  • Qualification Planned for Automotive Application
  • Over Current Protection(OCP)
  • Thermal Shutdown Protection(TSD)
類別 : FS supportive
A product that has been developed for automotive use and is capable of supporting safety analysis with regard to the functional safety.

Reference Design / Evaluation Tool

    • 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/

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