OPA549 module voltage control constant current constant voltage AC current sourc

Product Description

Pay special attention to inductive or large capacitive loads such as drive motors or coils, and you need to add protection circuits by yourself to avoid instantaneously changing back EMF damage to the module.

The heat sink and the chip are in direct contact with live electricity, do not touch other power sources or short-circuit.

Shipping list

OPA549 High Power Module Shipping List

Physical module + after-sales technical support + electrostatic bag packaging + shock-proof foam

Kind tips:

(1) The module interface of our store is clear and the performance is stable. Please verify the function according to the corresponding experimental conditions in combination with the user manual provided by our store.

(2) The basic parameters of this module are all in the details page, and the module user manual is provided, but the engineering documents are not provided. Please be informed by the buyer. If you have any operational problems, you can consult customer service.

(3) Before using the module, please read the details page of this module in detail to understand the power supply and usage restrictions to avoid damage to the module due to improper operation.

(4) Our modules are guaranteed to provide real module parameters, functions and pictures, and all modules are shipped after testing.

Module parameters

Parameter name；parameter value；Remark

Module model；OPA549 High Power；Constant voltage or constant current output

Module type；low frequency power amplifier

Input signal form；single ended

Input voltage range；10Vpp(MAX)；Usually within the power supply

Module input impedance；10K Euro

Module supply voltage；±15V～±30V；Positive and negative 24V is recommended

Module supply current；±8A；Large output current requires large supply current

Module output impedance；low resistance

Output voltage range；54Vpp (MAX)；Under the condition of plus or minus 30V power supply

Output current；8A (MAX)；The module has set 8A current limit

Output Power；170W(MAX)

Module gain；Constant current mode；Iout = Vin / 1, that is, 1V corresponds to 1A current output. Can output positive and negative current or current current

Module gain；Constant voltage mode；The default gain is 22 times, 2 times for the first stage, 3 times for the second stage, G1=R3/R2+1, G2=R13/R12+1 The first stage can be soldered potentiometer to adjust the gain.

Input offset voltage；1mV(MAX)

Input offset drift；2uV/℃（MAX）

Input bias current；125nA(MAX)

Input voltage noise；35nV√Hz (1KHz)

Module weight；530g

Module protection；Have；Power supply reverse polarity protection, output current limiting protection, motor drive protection

Module Specifications；12*11.5*7.5cm；L*W*H - overall size

Module heats up；with heat sink；With two 12V fans forced air cooling

Module heating factor；The input and output voltage is too large or the module is damaged

Module operating temperature；-40℃--+75℃；Industrial grade

Module Features；Positive and negative power LED indication

Scope of application；Audio power amplifiers, motor drives, servo amplifiers, high-power current and voltage sources, etc.

Module interface type；SMA signal and 5.08 blue card holder input, 5.08 green high power power card holder

Module description

The OPA549 is a low cost, high voltage/high current operational amplifier ideal for driving a variety of loads. This laser-trimmed monolithic integrated circuit provides excellent low-level signal accuracy and high output voltage and current.

The OPA549 module is powered by the power supply by default, and the OPA549 has an internal thermal protection function condition and current overload. In addition, OPA549 Provides accurate, user-selectable current limit. Unlike others that use "power" resistors with When outputting the current path, the OPA549 indirectly senses the load. It is suitable for motor drive speaker drive, transformer drive and audio amplifier, etc. It can also amplify triangular wave, sine wave, square wave signal.

Module usage precautions

(1) The power consumption of the module is large, and the power supply needs to have a certain margin. It is recommended to use a power supply with a current driving capacity that is more than twice the required output current. The module can only be powered by dual power supplies.

(2) In order to avoid unnecessary interference, it is recommended to use a linear power supply. An electrolytic capacitor above 50V/470uF can be connected in parallel at the input end, and the power supply cannot exceed plus or minus 30V.

(3) It is recommended to use a good wire for the output signal to observe the effect. Poor contact or poor quality wire may cause signal attenuation or excessive noise.

(4) It is recommended to use low-resistance wires for power output, otherwise it may cause excessive line loss and unstable power output.

(5) Due to the large power consumption and heat generation, pay attention to ventilation and heat dissipation when working with high power for a long time.

(6) Since the module has a fixed magnification, it is recommended to confirm the output power and amplitude before loading to avoid damage to the module.

FAQ

Q: Is the magnification fixed? How to adjust?

A: The default magnification of the module is 6 times. If you need to adjust the magnification, you can weld the potentiometer we donated to adjust the magnification, or replace the resistance value. The calculation formula is given in the details.

Q: Can the module directly drive the coil?

A: The module can drive the coil, but the internal resistance of the coil is required to be greater than 2 ohms. If it is less than 2 ohms, it is recommended to connect a power resistor in series, otherwise the module may be damaged.

Q: Can the module amplify square waves or pulses? What is the module bandwidth?

A: The module can amplify low-frequency square waves or pulses. Since it is an audio amplifier, the total bandwidth is not high, and signals within 100K can be amplified. The module is compatible with DC input.

Q: Can the module be amplified 1:1? That is, only amplifying the current?

A: The module can support 1:1 amplification, you need to modify the resistance configuration magnification by yourself. It is not recommended to directly configure the op amp follow mode, which is easy to self-excite. That's it.

Q: Why is the input sine wave output a square wave? What is the output current? What is the output power?

A: Generally speaking, if the input signal is too large, the op amp is amplified to cut-off distortion, which is a square wave, or the power supply voltage is not enough. It can be solved by reducing the input signal and increasing the supply voltage. In constant voltage mode, the output current of the module is determined by the output voltage and load, I=Uout/R, and the output power P=U*I, which is also determined by the output voltage and load resistance.

Q: Can it output AC constant current?

A: The module is powered by positive and negative, and can output AC constant current in constant current mode.

Q: Why is there an output shutdown signal on the output waveform?

A: When the DC signal is turned off, it is recommended to reduce the power supply. When the AC signal is turned off, it is recommended to increase the frequency. Generally, the shutdown will not occur above 50Hz.

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Condition

Brand New

Shipping

This item is shipped directly from our supplier in China with tracking.