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drv593手册,激光驱动所需芯片的手册
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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(完整内容请下载后查看)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 PowerPAD Quad 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