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参数资料
| 型号： | ADN8831ACPZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 11/20页 |
| 文件大小： | 0K |
| 描述： | IC THERMO COOLER CTRLR 32LFCSP |
| 产品变化通告： | ADN8831 Product Redesign & Datasheet Change |
| 标准包装： | 1 |
| 应用： | 热电冷却器 |
| 电流 - 电源： | 8mA |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 32-LFCSP-VQ |
| 包装： | 标准包装 |
| 产品目录页面： | 789 (CN2011-ZH PDF) |
| 配用： | ADN8831-EVALZ-ND - BOARD EVAL FOR ADN8831 |
| 其它名称： | ADN8831ACPZ-REEL7DKR |
Data Sheet
THEORY OF OPERATION
The ADN8831 is a single chip TEC controller that sets and
stabilizes a TEC temperature. A voltage applied to the input
of the ADN8831 corresponds to a target TEC temperature
setpoint (TEMPSET). By controlling an external FET H-bridge,
the appropriate current is then applied to the TEC to pump
heat either to or away from an object attached to the TEC.
The objective temperature is measured with a thermal sensor
attached to the TEC and the sensed temperature (voltage) is
fed back to the ADN8831 to complete a closed thermal control
loop of the TEC. For best stability, the thermal sensor is to be
closed to the object. In most laser diode modules, a TEC and a
NTC thermistor are already mounted in the same package to
regulate the laser diode temperature.
The ADN8831 integrates two self-correcting, auto-zero amplifiers
(Chop1 and Chop2). The Chop1 amplifier usually takes a thermal
sensor input and converts or regulates the input to a linear
voltage output. The OUT1 (Pin 4) voltage is proportional to the
object temperature. The OUT1 (Pin 4) voltage is fed into the
compensation amplifier (Chop2) and compared with a tempera-
ture setpoint voltage, creating an error voltage that is proportional
to the difference. When using the Chop2 amplifier, a PID
ADN8831
Adjusting the PID network optimizes the step response of
the TEC control loop. A compromised settling time and the
maximum current ringing become available when this is done.
Details of how to adjust the compensation network are in the
differentially driven in an H-bridge configuration. The ADN8831
drives external MOSFET transistors to provide the TEC current.
To further improve the power efficiency of the system, one side
of the H-bridge uses a PWM driver. Only one inductor and one
capacitor are required to filter out the switching frequency. The
other side of the H-bridge uses linear output without requiring
any additional circuitry. This proprietary configuration allows
the ADN8831 to provide efficiency of >90%. For most applica-
tions, a 4.7 μH inductor, a 22 μF capacitor, and a switching
frequency of 1 MHz, maintain less than 0.5% worst-case output
voltage ripple across a TEC.
The maximum voltage across the TEC and current flowing
through the TEC is to be set using the VLIM (Pin 31) and
ILIMC (Pin 1)/ILIMH (Pin 32). Additional details are in the
5?
VDD
VREF
AVDD
0.1μF
PVDD
0.1μF
LPGATE
3.0V TO 5.5V
17.8k?
0.1μF
10k?
8.2k?
8.2k?
10k?
10k?
10k?
10k?
VLIM
ILIMC
ILIMH
IN1P
LFB
LNGATE
CS
COMPSW
SFB
R SENSE
0.1μF
TEC
7.68k?
THERMISTOR
17.8k?
10k?
IN1N
OUT1
SYNCI/SD
COMPOSC
1 0k ?
VDD
60μF
27nF
30.1k?
10μF
IN2N
OUT2
SPGATE
SW
SNGATE
1 k?
3.3μH
40μF
TEMPERATURE SET INPUT
TEC VOLTAGE OUTPUT
TEC CURRENT OUTPUT
IN2P
VTEC
ITEC
SYNCO
PHASE
SS/SB
NC
NC
0.1μF
TEMP GOOD INDICATOR
TMPGD
AGND
PGND
FREQ
118k?
NC = NO CONNECT
Figure 12. Typical Application Circuit 1
Rev. A | Page 11 of 20
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相关代理商/技术参数 |
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|---|---|
| ADN8831-EVALZ | 功能描述:BOARD EVAL FOR ADN8831 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 主要目的:电源管理，电池充电器 嵌入式:否 已用 IC / 零件:MAX8903A 主要属性:1 芯锂离子电池 次要属性:状态 LED 已供物品:板 |
| ADN8831XCP | 制造商:Analog Devices 功能描述:- Bulk |
| ADN8833ACBZ-R7 | 功能描述:IC THERMO COOLER DRIVER 25WLCSP 制造商:analog devices inc. 系列:* 零件状态:在售 标准包装:1 |
| ADN8833ACPZ-R2 | 功能描述:IC THERMO COOLER DRIVER 24LFCSP 制造商:analog devices inc. 系列:- 包装:剪切带（CT） 零件状态:在售 应用:热电冷却器 电流 - 电源:2.1mA 电压 - 电源:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-WFQFN 裸露焊盘，CSP 供应商器件封装:24-LFCSP-WQ（4x4） 标准包装:1 |
| ADN8833ACPZ-R7 | 功能描述:IC THERMO COOLER DRIVER 24LFCSP 制造商:analog devices inc. 系列:- 包装:剪切带（CT） 零件状态:在售 应用:热电冷却器 电流 - 电源:2.1mA 电压 - 电源:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-WFQFN 裸露焊盘，CSP 供应商器件封装:24-LFCSP-WQ（4x4） 标准包装:1 |
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