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drv593手册,激光驱动所需芯片的手册

更新时间:2019-12-21 11:33:56 大小:249K 上传用户:abao121查看TA发布的资源 标签:drv593激光驱动 下载积分:0分 评价赚积分 (如何评价?) 收藏 评论(1) 举报

资料介绍

激光驱动所需芯片的手册,方便激光项目开发。

部分文件列表

文件名 大小
DRV593_datasheet.pdf 249K

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DRV593  
DRV594  
SLOS401A - SEPTEMBER 2002 REVISED - OCTOBER 2002  
±3−A HIGH−EFFICIENCY PWM POWER DRIVER  
FEATURES  
DESCRIPTION  
The DRV593 and DRV594 are high-efficiency,  
high-current power amplifiers ideal for driving a wide  
variety of thermoelectric cooler elements in systems  
powered from 2.8 V to 5.5 V. The operation of the device  
requires only one inductor and capacitor for the output  
filter, saving significant printed-circuit board area.  
Pulse-width modulation (PWM) operation and low output  
stage on-resistance significantly decrease power  
dissipation in the amplifier.  
D
Operation Reduces Output Filter Size and  
Cost by 50% Compared to DRV591  
D
D
D
D
D
±3-A Maximum Output Current  
Low Supply Voltage Operation: 2.8 V to 5.5 V  
High Efficiency Generates Less Heat  
Overcurrent and Thermal Protection  
Fault Indicators for Overcurrent, Thermal and  
Undervoltage Conditions  
The DRV593 and DRV594 are internally protected against  
thermal and current overloads. Logic-level fault indicators  
signal when the junction temperature has reached  
approximately 115°C to allow for system-level shutdown  
before the amplifier’s internal thermal shutdown circuitry  
activates. The fault indicators also signal when an  
overcurrent event has occurred. If the overcurrent circuitry  
is tripped, the devices automatically reset (see application  
information section for more details).  
D
D
D
D
Two Selectable Switching Frequencies  
Internal or External Clock Sync  
PWM Scheme Optimized for EMI  
9×9 mm PowerPADQuad Flatpack Package  
APPLICATIONS  
The PWM switching frequency may be set to 500 kHz or  
100 kHz depending on system requirements. To eliminate  
external components, the gain is fixed at 2.3 V/V for the  
DRV593. For the DRV594, the gain is fixed at 14.5 V/V.  
D
D
Thermoelectric Cooler (TEC) Driver  
Laser Diode Biasing  
V
DD  
1 µF  
10 µF  
10 µH  
1 µF  
To TEC or Laser  
PWM  
AVDD  
Diode Anode  
AGND (Connect to PowerPAD)  
PGND  
PGND  
PGND  
PGND  
PGND  
PGND  
H/C  
120 kΩ  
ROSC  
COSC  
220 pF  
DC Control  
Voltage  
DRV593  
DRV594  
AREF  
1 µF  
IN+  
10 µF  
1 kΩ  
1 kΩ  
IN-  
SHUTDOWN  
Shutdown Control  
FAULT1  
FAULT0  
To TEC or Laser  
Diode Cathode  
1 µF  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments  
semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PowerPAD is a trademark of Texas Instruments.  
PRODUCTION DATA information is current as of publication date. Products  
conform to specifications per the terms of Texas Instruments standard warranty.  
Production processing does not necessarily include testing of all parameters.  
Copyright 2002, Texas Instruments Incorporated  
 
DRV593  
DRV594  
SLOS401A - SEPTEMBER 2002 REVISED - OCTOBER 2002  
This integrated circuit can be damaged by ESD. Texas  
Instruments recommends that all integrated circuits be  
ORDERING INFORMATION  
handledwith appropriate precautions. Failure to observe  
proper handling and installation procedures can cause damage.  
PowerPAD QUAD FLATPACK  
(VFP)  
T
A
ESD damage can range from subtle performance degradation to  
complete device failure. Precision integrated circuits may be more  
susceptible to damage because very small parametric changes could  
cause the device not to meet its published specifications.  
DRV593VFP  
-40°C to 85°C  
DRV594VFP  
(1)  
This package is available taped and reeled. To order this  
packaging option, add an R suffix to the part number (e.g.,  
DRV593VFPR or DRV594VFPR).  
ABSOLUTE MAXIMUM RATINGS  
over
DRV593, DRV594  
Supply voltage, AVDD, PVDD  
-0.3 V to 5.5 V  
Input voltage, V  
-0.3 V to V + 0.3 V  
I
DD  
Output current, I (FAULT0, FAULT1)  
1 mA  
See Dissipation Rating Table  
-40°C to 85°C  
O
Continuous total power dissipation  
Operating free-air temperature range, T  
A
Operating junction temperature range, T  
-40°C to 150°C  
J
Storage temperature range, T  
-65°C to 165°C  
stg  
(1)  
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and  
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not  
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.  
RECOMMENDED OPERATING CONDITIONS  
MIN MAX UNIT  
Supply voltage, AVDD PVDD  
2.8  
2
5.5  
V
V
,
High-level input voltage, V  
FREQ, INT/EXT, SHUTDOWN, COSC  
FREQ, INT/EXT, SHUTDOWN, COSC  
IH  
Low-level input voltage, V  
0.8  
85  
V
IL  
Operating free-air temperature, T  
- 40  
°C  
A
PACKAGE DISSIPATION RATINGS  
Θ
JA  
Θ
JC  
T = 25°C  
A
PACKAGE  
(°C/W)  
(°C/W)  
POWER RATING  
VFP  
29.4  
1.2  
4.1 W  
(1)  
This data was taken using 2 oz trace and copper pad that is  
soldered directly to a JEDEC standard 4-layer 3 in × 3 in PCB.  
2
 

全部评论(1)

  • 2020-02-29 21:32:47luoqingfeng

    谢谢分享,很一般的手册