STEVAL-IHT001V1 STMicroelectronics

STEVAL-IHT001V1 Thermostat control demonstration board for refrigerators, based on the ST7Lite39 Data brief Features Power supply: 220 Vac Power output: 36 W Boost topology Discontinuous-conduction mode RoHS compliant Description The STEVAL-IHT001V1demonstration board is a complete reference system for a simple cost- effective PFC (power factor corrector) using bipolar transistors and is intended for low-to- STEVAL-IHT001V1 medium power HF ballasts. The proposed bipolar PFC solution targets the low-cost HF ballast market up to 80 W as it provides a simple cost-effective solution without sacrificing THD and PF levels. No additional ICs are required for the PWM signal as the device uses just a power bipolar transistor and a closed- loop feedback which performs the duty cycle modulation and output power regulation. The active PFC solution with bipolar transistor adopts the boost topology operating in discontinuous-conduction mode. September 2010 Doc ID 18009 Rev 1 1/4 For further information contact your local STMicroelectronics sales office. www.st.com 4 Obsolete Product(s) - Obsolete Product(s) Schematic circuit STEVAL-IHT001V1 1 Schematic circuit Figure 1. STEVAL-IHT001V1 demonstration board schematic diagram AM07967V1 2/4 Doc ID 18009 Rev 1 Obsolete Product(s) - Obsolete Product(s) MOTOR DEFROST LIGHT J2 J3 J4 MAINS L NEUTRAL VDD TP1 TP2 TP3 J1 C29 33 - 1/2W (TW) 10n - X2 R1 5151 1/4W (TTWW) ACST6 ACS110 VDD R2 ACS102 FUSE Q1 C1 Q2 Q3 10n D1 C2 + 5V6 - 0.3W 222000u 150 11330 33990 GND TP4 R3 R4 R5 D2 VDD C3 R6 RUN DEFROST LIGHT 47 - 1/2W (TW) 676700nn - X2 1N4148 TP5 TP6 TP7 R7 150k 1/4W (TW) OSCI/CLKIN R8 C4 C5 150k - 1/4W(TW) 100n0n/16v 1n LED1 R9 U1 1 20 VVSSS OSCI/CLKIN 2 19 VDD VDD OSC2 750 3 RST J5 RST 18 RUUNN LED2 LED3 R10 PA0(HS) 10 LEEDD1 4 17 DEEFFROST PBPB0/AIN0 PA1(HS) 9 LEDED2 LIIGGHT 5 16 PBPB1/AIN1 PA2(HS) 8 LEDED3 DOOOOR SW 6 15 PBPB2/AIN2 PA3(HS) 7 ZVS BUZZER 7 14 750 PBPB3/AIN3 PA4(HS) 6 NTTCC- CTTSS 8 13 PBPB4/AIN4 PA5(HS) 5 NTTCC+ 9 12 TEEMPMP PPBB5/AIN5 PA6(HS) 4 RRXX 10 11 TX LED4 R11 PBPB6/RDI PA7/TDO 3 2 ST7LITE39 : DIP20 1 750 INDART CONNNNECTOR RX TX J10 1 TP8 TP10 CTS 2 ZVS NTC- TEMP BUZZER DOORSW RX CTS 3 TX 4 J11 TP11 TP12 TP9 Con1 1 C8 2 1n NTC VDD C7 R14 R15 C12 C9 C10 1n R13 10k R16 10n C6 C11 R12 1n 1n 200 10k 4.7k 2.2n 30K 1n RST J23 1 R17 TEMP 2 J12 12 1 J13 R18 C13 3 4.7K BBPP1 2 1M 10n Buzzer Door SW2 Door SW1 1 3 2 2 1 4 3 43 2 1 2 1 RST VDD OSCI/CLKIN