STEVAL-IFP020V1

STEVAL-IFP020V1 PLC (for industrial automation) digital output solution using a 2.5 A single high-side smart power switch based on the L6370Q Data brief Features ■ Single-channel topology ■ Galvanic isolation ■ 2.5 A output current ■ 9.5 V to 35 V supply voltage range ■ Short-circuit, overload, and thermal protections ■ Loss of ground and VS protections ■ Fast demagnetization of inductive loads ■ Open load, output short to VS detection ■ Two diagnostic outputs ■ Output status LED driver ■ EMC immunity against burst, surge, and ESD ■ RoHS compliant STEVAL-IFP020V1 Description The STEVAL-IFP020V1 demonstration board is based on the L6370Q, a single-channel high-side driver chip intended for driving resistive, inductive or capacitive loads in an industrial environment. It provides an embedded fast demagnetization feature for inductive load switch-off. The device evaluates load disconnection (during channel on-state), output short to VCC or GND, overtemperature, undervoltage of supply voltage, and provides feedback to a control unit. Integrating an extensive set of electrical protections makes the application safe and reliable for use in harsh conditions. The STEVAL-IFP020V1 demonstration board is an example of application design using the L6370Q. It is used to guide the designer in choosing external components for applications while providing an appropriate PCB design. December 2011 Doc ID 022632 Rev 1 For further information contact your local STMicroelectronics sales office. 1/4 www.st.com 4 Schematic Figure 1. STEVAL-IFP020V1 schematic 4 3 470R 0603 L6370Q_GND IN+ IN- R4 18K 0603 C6 180pF 0603 50V R6 470R 0603 R5 470R 0603 V_Logic R10 10K 0603 MLW34G DIAG2 OPT2 R8 4 1 3 3K3 0603 R9 2 OPT3 R11 4 1 3 3K3 0603 R12 2 22 4 28 29 TP4 IN+ IN- OUT OUT OUT OUT 1 2 10 11 OUTPUT 38 OUT-STAT RSC ON-DELAY DIAG1 DIAG2 Vs TP5 L6370Q_GND 3K3 0603 TLP281 RSC ON-DELAY C7 680pF 0603 50V V_Logic DIAG1 33 34 TLP281 DIAG1 R7 10K 0603 U1 TP3 TAB OPT1 1 TP2 ARK128V-A-2P L6370Q_Vs C4 4n7 3kV OUT-STATUS CN4 1 2 C5 0603 10nF 50V ARK128V-A-2P L6370Q TAB Doc ID 022632 Rev 1 DIAG2 R2 470R 0603 R3 2 R1 18K 0603 D1 SM15T36A 5 6 7 8 INPUT Vs C1 100uF 50V C2 100nF 50V 0603 Vs Vs Vs Vs DIAG2 CN2 INPUT V_Logic CN3 1 2 W1 5.08mm 10A C8 100nF 50V 0603 GND C9 100nF 50V 0603 MLW14G 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 TP1 Vs L6370Q_Vs C3 4n7 3kV Earth 3.3V/5V, TTL/CMOS Compatible Signals 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 Vs 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 41 DIAG1 CN5 V_Logic CN1 V_Logic INPUT STEVAL-IFP020V1 1 W2 2.54mm 1A LED1 GREEN 0805 Vs TP6 3K3 0603 TLP281 1 Earth AM045319v1 CN6 Schematic 2/4 STEVAL-IFP020V1 2 Revision history Revision history Table 1. Document revision history Date Revision 22-Dec-2011 1 Changes Initial release. Doc ID 022632 Rev 1 3/4 STEVAL-IFP020V1 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. 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