Signal Consulting, LLC 

Model Si5HyUdPTC1-30V-20A

 30V 20A, Hybrid, Unidirectional Proportional Temperature Controller for Heating or Cooling Applications with 9-Bit Digital Sensor Port, Serial LCD Port and Integrated Finned Heat Sink





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 Si5HyUdPTC1-30V-20A Features:
Power Semiconductors: Ono 90A MOSFET
Max. Continuous Current: 20A with Heat Sink as Shown.
Max. Current for 5sec: 40A with Heat Sink as Shown.
Overall Dimensions: L=2.4", W=2.3", H=1.35" (61, 58, 34mm).
Components Type: 100% Solid State, NO Relays

  Closed-Loop Proportional Temperature Control in 1/20C Steps,   -250C to +1020C Range with 1/20C accuracy.

User Selectable Control Modes: J2 Open=Cooling Mode, J2 Short=Heating Mode.

 LCD Port, CN4:  5V RS232 Serial Interface Standard, 9600 Baud, 1 Start, 8 Data, No Parity, 1 Stop Bit.  A 2-Line by 16-Character LCD displays the Set and Measured temperatures.

Kill Switch Port, J1: An external Normally Open Switch or an Open Collector NPN transistor can be connected to J1 port to inhibit the load current (J1 Open=Normal Operation, J1 Short=Stop).

  Factory Calibrated 9-Bit Digital Temperature Sensor is Immune to Additive Noise

  High Power-Efficiency: 98.5% typical, at 30V and 20A

On Board:
Filter Capacitors
VTS diodes
Snubber Circuit Ready
Voltage Requirement:
A single DC Source Voltage (unregulated) with any voltage value from 9V to 30V (for Vp)



 Si5HyUdPTC1-30V-20A-7T2,  Spec Sheet  (PDF)

The Si5HyUdPTC1-30V-20A is a 30V 20A, microprocessor based, Hybrid, Unidirectional, Proportional Temperature Controller board with an integrated finned heat sink for Heating or Cooling applications. These application modes are Jumper selectable (J2 Open selects the Cooling Mode while J2 Short selects the Heating Mode). In the Cooling Mode, the Load current is proportionally controlled long as the Measured Temperature is greater than the Set Temperature; otherwise, the load-current is tuned off. In the Heating Mode, the Load current is proportionally controlled long as the Measured Temperature is less than the Set Temperature; otherwise, the load-current is tuned off. The jumper J2 is examined each time the power is turned ON; consequently, the power must be tuned off when a new mode is selected and the TE cell wires must be reversed. This board uses pulse-width modulation (PWM) to efficiently control average current to a resistive heater or Thermo-Electric (TE) cooler cell in 0 to 600W power range with 5W steps. An onboard microprocessor allocates the load-power and controls the temperature. The sample temperature is measured by a small, 9-bit digital thermometer Si18DTsens-9B. This sensor uses a unique “1-wire interface” (with a parasite power mode) that requires only 2-conductors for reliable remote (long as 20 meters) temperature sensing. The term proportional controller implies that the value of the average load current used is proportional to the difference between the actual and desired temperature. Five PWM duty-cycle values are used depending on the absolute-value of the difference between the set and measured temperature values (|Td|). The duty-cycle is 0% when |Td|=00C; 25% when 00C< |Td|<0.50C; 50% when 0.50C< |Td|<1C0; 75% when 10C< |Td|<1.50C; 100% when |Td|>1.50C. This method allows a uniform temperature control in the -250C to +1020C Range, with 1/20C accuracy. As the name hybrid (Hy) implies, the required temperature value (or load current) is derived from a variable analog-voltage, while all other control-signals are digital. The desired temperature value (or load current) is set by a (0 to 5V range) external analog voltage (VI1,G), or by an external potentiometer. This analog (I1) input is zener-diode protected. This board requires a single 9V to 30V DC power source (unregulated and unfiltered) at a 0A to 20A current range to operate normally. An onboard LED (red) is used to monitor the load-voltage and an optional 2-Line by 16-Character serial LCD displays the Set and Measured Temperature Values on the CN4 Port (Si14LCD2L16CH-3PC). A small (2.3”x2.4”x0.45”) integrated finned heat sink is included with mounting hardware (as shown on the photograph) to operate at 20A or 600W power levels. Higher power-levels (30V, 30A or 900W) can be achieved with more efficient heat-sinks. Please click on this link and read the Board Mounting Instructions and Heat Sink Selection Guide. Typical applications are: DC Resistive Heater Controller, Thermo-Electric Cooler Controller, etc. This board can be configured and programmed to perform efficiently in many customized applications.

A Typical Application of the Si5HyUdPTC1-30V-20A

In this heating or cooling application (but not both at the same time, user selectable by the jumper J2), the temperature (load-current) is proportionally controlled (in the 0 to 600W power range) by the Si5 board. The desired temperature (or load current) is linearly adjusted with the Si5Pot1-5k accessory (an external 1-turn 5kW pot); -250C to +1020C Temperature Range, in 1/20C Steps. The 9-bit digital temperature sensor can be purchased from us (see Parts Department Si18DTsens-9B) or you can wire up your own using the Dallas Semi. Digital Thermometer chip DS18S20, in TO-92 casing (order from as part number DS18S20-ND). An optional 2-Line by 16-Character serial LCD displays the Set and Measured Temperature Values on the CN4 Port (Si14LCD2L16CH-3PC).The TE cells can be purchased from: A simple unregulated DC power supply is shown below; wide variety of linear and switching power supplies can also be used with this board; click on to find these supplies.

Si5HyUdPTC1-30V-20A, Hybrid Unidirectional Proportional Temperature Controller Board with Heat Sink
Price $109.00

Note: If Buying the Si5HyUdPTC1-30V-20A, it is recommended to buy  one Si18DTsens-9B  Digital Sensor,  Si5Pot1-5k Potentiometer, and Si14LCD2L16CH-3PC  2-Line by 16-Char  LCD.

Si18DTsens-9B  9-bit Digital Thermometer ( -550C to +1250C Range, in 1/20C Steps) with 12" leads and 3pin FM connector.
Price $29.00
Si14LCD2L16CH-3PC,  2-Line by 16-Char Serial LCD Display with 12"  cable and 3-pin connectors.  
Price $59.00
Si5Pot1-5k   1-Turn, Linear Taper, 5kW Potentiometer.
Price $15.00

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Availability: We usually ship in 2-3 business days.



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