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Quick Start Guide
The MSL2100 controls eight strings of series-connected
LEDs at up to 1A per string, and up to sixteen devices
may share the serial interface. The MSL2100 FET gate
drive output is optimized for FETs requiring no more
than 10nC of charge. The MSL2100 PWM engine
generates the PWM signal that drives the strings or,
optionally, accepts an external PWM signal.
How Many LEDs and Drivers?
The MSL2100 drives eight strings of series-connected
LEDs using external N-channel MOSFETs and current
sense resistors. The LED drive capability (maximum
number of LEDs per string) is limited only by the
MOSFETs and the LED string power supplies, not by
the MSL2100. Up to 16 MSL2100s may share an
I 2 C/SMBus serial interface, with both individual and
broadcast (all MSL2100s on a bus) addressing. The
high LED drive power of the MSL2100 makes it suitable
for large LCD TV and monitor backlights, as well as for
LED signage and general lighting.
LEDs, String Power Supplies,
and the Efficiency Optimizer
The MSL2100 features three Efficiency Optimizer outputs
that dynamically adjust the LED string power supplies
to the minimum voltage necessary to drive the LED
strings, minimizing power use while assuring accurate
LED current flow. The Efficiency Optimizers feature an
input that allows up to 16 devices to be connected in
a chain configuration. When implemented, the chains
automatically negotiate, control and optimize the string
power supplies for all LED strings driven by each chain.
4
The power supplies can use any topology that employs
external feedback resistors with a maximum feedback
voltage of 1.5V, and are typically DC-DC boost
converters. The Efficiency Optimizers rely on close
matching of the LEDs connected to a string supply; the
better the matching, the better the overall efficiency.
Differences between Atmel LED
Driver-MSL2100 and MSL3082
The MSL2100 includes three independent Efficiency
Optimizer circuits to control three separate string
supplies (for RGB LEDs for example). The MSL3082
includes a single Efficiency Optimizer, is more suited for
single-color LEDs, and is ideal for driving white backlight
LEDs in an LCD monitor or TV application.
Timing, PWM, Intensity Controls,
and Synchronization
The PWM LED drive signals synchronize to video frame
timing via the PHI input, and to pixel timing via the
GSC input. Suitability for LED backlight architectures is
shown in Table 1 and Table 2. Area LED dimming for
direct backlighting is supported for contrast and color
gamut improvement. With area dimming, motion blur is
reduced by setting each LED string’s PWM phasing to
synchronize string off times with the LCD update timing.
Also, the individual PWM intensity registers for eight
LED strings are updated with only 92 I 2 C/SMBus clocks.
Sixteen drivers (128 LED strings) update in 1.47ms
with a 1MHz bus speed, offering area dimming support
for frame rates up to 640Hz.
Atmel LED Driver-MSL2100
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相关代理商/技术参数
MSL2100BR-R 功能描述:LED照明驱动器 8 Str Hi Pwr, White or RGB LED Drivers RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
MSL2160 制造商:未知厂家 制造商全称:未知厂家 功能描述:16-string, White and RGB LED Drivers with Adaptive Configuration,EEPROM, and SPI/I2C/SMBus Serial Interface
MSL2160DQ 功能描述:LED照明驱动器 16-StringRGBLED Dvrs AdapPwrContr E2Prom RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
MSL2160DQ-R 功能描述:LED照明驱动器 16String White & RGB LED Drivers with A RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
MSL2161 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:16-string, White and RGB LED Drivers with Adaptive Configuration, EEPROM, and SPI/I2C/SMBus Serial Interface
MSL2161DQ 功能描述:LED照明驱动器 16String White & RGB LED Drivers with A RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
MSL2161DQ-R 功能描述:LED照明驱动器 16String White & RGB LED Drivers with A RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
MSL2162DQ 功能描述:LED照明驱动器 16-String RGBWhite LED Dvrs AdapCon E2P RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N