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参数资料
| 型号： | MAX1978-MAX1979 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | Integrated Temperature Controllers for Peltier Modules |
| 中文描述： | 集成温度控制器佩尔蒂埃模块 |
| 文件页数： | 12/20页 |
| 文件大小： | 620K |
| 代理商： | MAX1978-MAX1979 |
M
Detailed Description
Power Stage
The power stage of the MAX1978/MAX1979
thermoelectric cooler (TEC) temperature controllers
consists of two switching buck regulators that operate
together to directly control TEC current. This configura-
tion creates a differential voltage across the TEC, allow-
ing bidirectional TEC current for controlled cooling and
heating. Controlled cooling and heating allow accurate
TEC temperature control within the tight tolerances of
laser driver specifications.
The voltage at CTLI directly sets the TEC current. The
internal thermal-control loop drives CTLI to regulate
TEC temperature. The on-chip thermal-control circuitry
can be configured to achieve temperature control sta-
bility of 0.001
°
C. Figure 1 shows a typical TEC thermal-
control circuit.
Ripple Cancellation
Switching regulators like those used in the
MAX1978/MAX1979 inherently create ripple voltage on
each common-mode output. The regulators in the
MAX1978 switch in phase and provide complementary
in-phase duty cycles, so ripple waveforms at the differ-
ential TEC output are greatly reduced. This feature sup-
presses ripple currents and electrical noise at the TEC
to prevent interference with the laser diode while mini-
mizing output capacitor filter size.
Integrated Temperature
Controllers for Peltier Modules
12
______________________________________________________________________________________
TEC
MAX1978
10
μ
F
0.01
μ
F
V
DD
V
DD
SHDN
PV
DD
1
PV
DD
2
REF
REF MAXV MAXIN MAXIP
UNDERTEMP
ALARM
OVERTEMP
ALARM
DC CURRENT
MONITOR
COMP
REF
ITEC
BFB-
AIN-
AIN+
CTLI
FREQ
GND
PGND2
PGND1
INTOUT
INT-
DIFOUT FB+
FB-
LX2
OS2
OS1
CS
LX1
AOUT
20k
1%
69.8k
1%
105k
1%
1
μ
F
THERMISTOR
VOLTAGE
MONITOR
80.6k
100k
100k
0.068
10k
1
μ
F
3
μ
H
3
μ
H
4.7
μ
F
1
μ
F
20k
1M
10
μ
F
0.047
μ
F
0.47
μ
F
REF
THERMAL
FEEDBACK
UT
OT
10
μ
F
10
μ
F
1
μ
F
Figure 1. MAX1978 Typical Application Circuit
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1978ETM | Integrated Temperature Controllers for Peltier Modules |
| MAX1979ETM | Integrated Temperature Controllers for Peltier Modules |
| MAX197ACWI | Multi-Range (【10V, 【5V, +10V, +5V), Single +5V, 12-Bit DAS with 8+4 Bus Interface |
| MAX197AMYI | Circular Connector; No. of Contacts:18; Series:MS27505; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:15; Circular Contact Gender:Socket; Circular Shell Style:Box Mount Receptacle RoHS Compliant: No |
| MAX197AEAI | Multi-Range (【10V, 【5V, +10V, +5V), Single +5V, 12-Bit DAS with 8+4 Bus Interface |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX19790ETX/GH9 | 功能描述:有源衰减器 RoHS:否 制造商:TriQuint Semiconductor 通道数量: 最大频率: 阻抗: 最大 VSWR: 位数: 最大工作温度: 最小工作温度: |
| MAX19790ETX+ | 功能描述:有源衰减器 250MHz - 4000MHz Attenuator RoHS:否 制造商:TriQuint Semiconductor 通道数量: 最大频率: 阻抗: 最大 VSWR: 位数: 最大工作温度: 最小工作温度: |
| MAX19790ETX+T | 功能描述:有源衰减器 250MHz - 4000MHz Attenuator RoHS:否 制造商:TriQuint Semiconductor 通道数量: 最大频率: 阻抗: 最大 VSWR: 位数: 最大工作温度: 最小工作温度: |
| MAX19790ETX+TW | 功能描述:有源衰减器 250MHz to 4000MHz Dual Analog Voltage Variable Attenuator RoHS:否 制造商:TriQuint Semiconductor 通道数量: 最大频率: 阻抗: 最大 VSWR: 位数: 最大工作温度: 最小工作温度: |
| MAX19790ETX+W | 功能描述:有源衰减器 Dual SiGe High-Linearity 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch RoHS:否 制造商:TriQuint Semiconductor 通道数量: 最大频率: 阻抗: 最大 VSWR: 位数: 最大工作温度: 最小工作温度: |
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