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參數(shù)資料
| 型號： | DRV591GQE |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 10/19頁 |
| 文件大小： | 256K |
| 代理商： | DRV591GQE |
DRV591
SLOS389
–
NOVEMBER 2001
10
www.ti.com
APPLICATION INFORMATION
1
μ
F
AVDD
AGND (Connect to PowerPAD)
ROSC
COSC
AREF
IN+
IN
–
F
F
P
P
P
O
–
O
–
O
–
OUT
–
PGND
PGND
PGND
PGND
PGND
PGND
OUT+
O
O
O
P
P
P
F
120 k
220 pF
1
μ
F
Shutdown Control
1 k
1 k
DC Control
Voltage
10
μ
F
VDD
10
μ
H
10
μ
F
10
μ
H
10
μ
F
1
μ
F
FAULT1
FAULT0
To TEC or Laser
Diode Anode
To TEC or Laser
Diode Cathode
1
μ
F
SHUTDOWN
I
Figure 16. Typical Application Circuit
output filter considerations
TEC element manufacturers provide electrical specifications for maximum dc current and maximum output
voltage for each particular element. The maximum ripple current, however, is typically only recommended to
be less than 10% with no reference to the frequency components of the current. The maximum temperature
differential across the element, which decreases as ripple current increases, may be calculated with the
following equation:
T
1
1
N
2
Tmax
Where:
T = actual temperature differential
T
max
= maximum temperature differential (specified by manufacturer)
N = ratio of ripple current to dc current
According to this relationship, a 10% ripple current reduces the maximum temperature differential by 1%. An
LC network may be used to filter the current flowing to the TEC to reduce the amount of ripple and, more
importantly, protect the rest of the system from any electromagnetic interference (EMI).
(1)
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| DRV591VFP | 功能描述:功率驅(qū)動器IC High Efficiency PWM Power Driver RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| DRV591VFP(1) | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-A HIGH-EFFICIENCY PWM POWER DRIVER |
| DRV591VFP | 制造商:Texas Instruments 功能描述:PWM POWER DRIVER SMD HLQFP32 591 |
| DRV591VFP1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-A HIGH-EFFICIENCY PWM POWER DRIVER |
| DRV591VFPG4 | 功能描述:功率驅(qū)動器IC High Efficiency PWM Power Driver RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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