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參數(shù)資料
| 型號： | D371A |
| 英文描述： | EL Drivers(EL驅(qū)動器) |
| 中文描述： | EL驅(qū)動（薩爾瓦多驅(qū)動器） |
| 文件頁數(shù)： | 11/14頁 |
| 文件大小： | 2502K |
| 代理商： | D371A |
III. Lamp Frequency Control with an External Clock Signal
An external clock signal may be used to control the EL lamp frequency (LF) of the D371A instead of using a capacitor.
There is an internal frequency divider in the IC so that the output lamp frequency will be half of the input clock signal.
For example, if a 500Hz input clock signal is used, the resulting lamp frequency will be 250Hz. The clock signal voltage
should not exceed V+. A typical duty cycle for the clock input is +75%, but it can also be adjusted within a range of 20%
to 99% to control brightness and discharge level. A higher positive duty cycle allows for longer charge time and peak
voltage, at the expense of a faster discharge slope and higher noise.
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IV. EL Brightness Control Through HF Clock Pulse Width Modulation
The inductor oscillating frequency may also be controlled on the D371A EL driver IC using an external clock input to
CHF. In addition, pulse-width modulation of the external HF clock signal to the D371 may be used to regulate the
brightness of the EL lamp load. High frequency input is typically in the range of 10kHz to 40kHz, with duty cycle in the
range of 15% to 100%. In general, a lower HF frequency results in higher brightness and using a lower duty cycle
results in higher brightness. The clock signal voltage should not exceed V+. Prior to finalization of the circuit, contact
Durel to verify that the frequency, duty cycle, and setup chosen are acceptable for EL driver performance.
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CHF
CLF
E
DCH
GND
N/C
L-
Vout
L+
V+
D371A
Vbat
0.1 u F
OFF
ON
EL Lamp
1.0V Min
0.2V Max
200Hz - 2KHz
20%-99% +Duty
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2
3
4
5
6
7
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9
10
CHF
CLF
E
DCH
GND
N/C
L-
Vout
L+
V+
D371A
Vbat
0.1 u F
OFF
ON
EL Lamp
1.0V Min
0.2V Max
15%-100% Duty
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| D371A | Electroluminescent Lamp Driver IC |
| D371 | Digital Uncooled DFB（distributed-feedback） Laser Module(數(shù)字常溫DFB（分布式反饋）激光模塊) |
| D372-21GS | D372-Type Digital Uncooled DFB Laser Module for 2.5 Gbits/s Applications |
| D372-21SS | D372-Type Digital Uncooled DFB Laser Module for 2.5 Gbits/s Applications |
| D372A | EL Drivers(EL驅(qū)動器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| D-371F | 制造商:Triad Magnetics 功能描述: |
| D371S45T | 功能描述:二極管 - 通用，功率，開關(guān) 4.5KV 410A RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Switching Diodes 峰值反向電壓:600 V 正向連續(xù)電流:200 A 最大浪涌電流:800 A 配置: 恢復(fù)時間:2000 ns 正向電壓下降:1.25 V 最大反向漏泄電流:300 uA 最大功率耗散: 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:ISOTOP 封裝:Tube |
| D372 | 制造商:AGERE 制造商全稱:AGERE 功能描述:D372-Type Digital Uncooled DFB Laser Module for 2.5 Gbits/s Applications |
| D3720A-01 | 制造商:American Technical Ceramics Corp 功能描述:SINGLE CHANNEL DIGITAL PANEL METER 制造商:ATC 功能描述:SINGLE CHANNEL DIGITAL PANEL METER |
| D372-20AS | 制造商:AGERE 制造商全稱:AGERE 功能描述:D372-Type Digital Uncooled DFB Laser Module for 2.5 Gbits/s Applications |
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