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STCC05-BD4
AC Power Management in Home Appliance Systems
Datasheet | Orderable Products | Features and Description
 
Datasheet
Reference Title
STCC05-BD4 Home Appliance Control Circuit
(07 Oct 2004, 212KB) Download
 
Orderable Products
Device Status RoHS Package Purchase
STCC05-BD4 Active Converted DIP-20
 
Features and Description
7 to 27 V input supply voltage
5V +/-5% full tolerance 50mA voltage regulator
MCU reset circuit with noise filter
Internally filtered zero voltage synchronization
One 100mA compressor relay coil driver
Three 50mA power relay coil drivers
30mA buzzer driver with smooth sound control
Speed sensor level shifter
Ecopack™ lead-free DIP-20 package housing
– 20 to 85 °C ambient temperature
Most of the new Air-Conditioners and Refrigerators are electronically controlled using an 8-bits microcontroller. Their electronics is designed in a system platform approach to reduce their development time and maximize the count of produced models. For these appliances, ST has introduced the STCC05-BD4 that includes the required functions for AC power control and safety. This power management device enlarges the STCC family designed for Home Appliances Electronics. The STCC05 device is dedicated to the air conditioner or refrigerator digital control. It integrates the nine analog and power functions, which are required around the MCU to sense and drive the AC power loads: the zero voltage filtered synchronization; the three 50 and one 100mA relay coil drivers with their free-wheel diode; the MCU 5V supply with its reset circuit; the level shifter of the indoor fan speed sensor –or the door switch- and the enhanced buzzer driver.
Using a 20V power technology, this device is able to run with large input voltage variations from 7 to 18V. Housed in the lead-free DIP-20 package, it has a 90ºC/W thermal resistance able to cool its 50mA regulator and its up to 250mA coil drivers on an extended temperature range from –20 to 85ºC.
The STCC05 is the second circuit of the home appliance oriented STCC range; it embeds all the AC power management and safety functions required for a refrigerator and air-conditioner control platform. Thanks to an exhaustive functional definition including electromagnetic compatibility, it maximizes the discrete devices integration, improving the performances and the reliability of the system while reducing its overall cost and its development time.
Split air conditioner diagram
STCC05 A/C Application Diagram
Benefits:
High functional reliability reducing the appliance field maintenance
High ESD robustness and EFT immunity compliant with IEC61000-4 standards
6 Sigma parametric quality
Higher module compactness thanks to a full system/platform solution
Easy to design with an optimum partitioning
Faster module assembly time over discrete boards
 

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