STEVAL-IHT003V2

STEVAL-IHT003V2 Low loss e-starter evaluation board for compressor starter circuits based on the ACST6 Data brief Description The STEVAL-IHT003V2 evaluation board represents an innovative solution patented by STMicroelectronics to reduce the power losses caused by positive temperature coefficient (PTC) resistors in compressor starter circuits. The solution features an ACST6 AC switch device to turn off the PTC current after motor start-up; note that the traditional PTC is still used in the electronic starter circuit as it increases circuit safety for AC switch short-circuits or diode mode failure (ref. EN60335-1). Features    Suitable for refrigerator and freezer compressor applications Reduces PTC resistor power losses RoHS compliant January 2017 The design reduces starter standby losses from (typ.) 2.5 W to 380 mW for 230 V applications, or 2.5 W to 40 mW for 100 V applications. Before using the board with a compressor, the PTC behavior must be checked (especially VPTC1 and VPTC2 levels) and different R4 resistor values may be required. DocID030275 Rev 1 For further information contact your local STMicroelectronics sales office 1/4 www.st.com DocID030275 Rev 1 RUN J18 PTC J17 1 3 1 3 START 1 3 T1 2 220 R7 22n ACST610-8T C4 47 R6 4 DF06 + - 3 2/4 GND X0202NN 1 T2 R1 620 xn C3 M1 0 10n C2 MMBF170 R2 470k Q2 R8 1 MΩ BZX55C DZ1 10k R5 PMBT2907A Q1 1N4148 PMBT2222A D2 1N4007 D1 C 10n C1 R3 510k R4 30k 1 A J16 Schematic diagram STEVAL-IHT003V2 Schematic diagram Figure 1: STEVAL-IHT003V1 circuit schematic STEVAL-IHT003V2 2 Revision history Revision history Table 1: Document revision history Date Version 30-Jan-2017 1 Changes Initial release. DocID030275 Rev 1 3/4 STEVAL-IHT003V2 IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2017 STMicroelectronics – All rights reserved 4/4 DocID030275 Rev 1