BD94130MUF-M
內置24通道恆流驅動器和8路開關控制器的背光LED驅動器
BD94130MUF-M
內置24通道恆流驅動器和8路開關控制器的背光LED驅動器
BD94130MUF-M內置24通道12位PWM調光恆流驅動器和最大8路開關控制器。該產品可以通過設置外部ISET電阻來設置LED恆流值，並可通過SPI與微控制器進行通信。
Product Detail
功能安全:
規格:
Topology
Constant Current
Vin(Min.)[V]
3
Vin(Max.)[V]
5.5
Total Output Current (Max.)[mA]
1920
Per Channel Drive(Max.)[mA]
80
Number of Outputs
24
Vout(Max.)[V]
20
Data Input
SPI
Data Transfer Rate(Max.)[MHz]
20
Dimming
DC / PWM
PWM Dimming Steps
4096
DC Dimming Steps
64
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
125
Package Size [mm]
8.0x8.0 (t=1.0)
Common Standard
AEC-Q100 (Automotive Grade)
功能:
- AEC-Q100 Qualified (Grade 1)
- Functional Safety Supportive Automotive Products
- Integrated 24-channel LED Constant Current Drivers
- Integrated 4/6/8-line Switch Controllers
- SPI Interface (Cascade Connection Feasible)
- 12bit PWM Dimming
- LED Constant Current Setting by ISET Resistor
- Phase Shift Function
- 6bit Dot Correct (50% to 100%)
- LED Open Detection and LED Short Detection
- Adjacent LEDCH Short Detection
- PGATE Short Protection
- VINSW Over Voltage Protection
- Slew Rate Control for PMOS Gate Driver
- Abnormality Output FAILB Pin
Supporting Information
背景
近年來，隨著ADAS（先進駕駛輔助系統）發展和In-Vehicle Infotainment system功能的增加，車用顯示器需要具備更高的清晰度以便提高易辨性。針對該需求，具有Local Dimming功能的LED驅動器由於可以只關閉液晶顯示器暗部的背光，有助提高液晶顯示的清晰度並降低功耗，因此開發新世代駕駛艙的製造商正在考慮採用此種LED驅動器。而傳統的直接式LED驅動器，一顆IC可控制的區域數不足100個，在隨著顯示器尺寸擴大而區域數也日益增加的車用顯示器領域中，面臨著LED驅動器和週邊元件面積增加的挑戰。
概要
「BD94130xxx-M」是由8系統開關控制器和24通道電流驅動器組成的矩陣式LED驅動器，僅由一顆IC即可將背光用的Mini LED分割為多達192個區域進行控制（調光）。另外每個區域的Mini LED還可透過Local Dimming功能獨立控制，有助提高顯示器的清晰度並降低功耗。目前在車用顯示器領域中，區域數量與日俱增，已成為市場發展趨勢，「BD94130xxx-M」與直接式的市場競品相比，一顆IC能夠控制的區域數量更多，因此可大幅削減安裝面積和所需控制器數量。例如目前主流車用顯示器的In-Vehicle Infotainment system，採用的是10英吋等級產品，需要控制大約600個區域，本產品與直接式的市場競品（支援48個區域）相比，僅需1/4的LED驅動器數量即可進行控制，LED驅動器所需安裝面積可以縮減多達84%。此外隨著新世代駕駛艙使用顯示器尺寸的增大，區域數也日益增加，因此採用ROHM本產品所帶來的優勢將越發顯著。
應用範例
具有Local Dimming功能，有助車用顯示器實現高對比。
・電子後視鏡（倒車鏡、後視鏡）
・In-Vehicle Infotainment system 車用資訊娛樂系統
・儀表板
・抬頭顯示器（HUD）
參考設計 / 應用評估套件
-
- Reference Design - REF66005
- LED back light (Local dimming)
Direct LED backlighting allows for higher brightness and improved contrast through area dimming or individual dimming, making it ideal for high-definition displays. This is a demo device that drives LEDs in a 24 x 32 matrix using 4pcs of LED driver BD94130MUF-C with 8 lines switches and 24Ch LED driver.
Collaboration board with Shockley
Shanghai Shockley was established in October 2005, is a geared to the needs of China's electronics industry, based on the semiconductor chip, the application of technical services solutions for your business and products agent registered.Shockley has experienced technical research and development and marketing team, can be based on semiconductor chips, according to customer needs, to provide technical services and complete solutions, to help customers quickly and efficiently to complete product design.
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