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S3F84B8 All-in-One IH Cooker Revision 0.00 May 2010 A A p p p p l l i i c c a a t t i i o o n n N N o o t t e e 2010 Samsung Electr onics Co., Ltd.
Import ant Notice The information in this publication has b een carefully checked and is believed to be entirely a ccurate at the time of publication. Samsung assumes no responsibility, however, for possible errors or omissions, or for any consequences resulting from the use of the information contained h erei n.
Revision History Revision No. Effective Date Description Refer to Author(s) 0.00 Mar, 2010 - Initial Draft Wei Ningning Zhang Fan.
T able of Content s 1 OVERVIEW OF IH COOKER (IHC) ............................................................. 1-1 1.1 Induction Cook ing Principle ................................................................................................ .....
List of Figures Figure Title Page Number Number Figure 1-1 How IH Cooker Work s ............................................................................................... ....................... 1-1 Figure 1-2 Pin Assi gnment in S3F84B8 .........
List of T ables Table Title Page Number Number Table 2-1 S3F84B8 pin assi gnment in IH c ooker system ......................................................................... ......... 2-5 Table 3-1 Internal Resource Arrangement and Configuration ...
S3F84B8_ALL-IN-ONE IH COOKER_AN_REV 0. 00 1 OVERVIEW OF IH COOKER (IHC) 1-1 1 OVER VIEW OF IH COOKER (IHC) In traditional ranges or ovens, cookware is use d to tran sfer heat from the stove elements. However, in the IH cooker (IHC), the cookware participate s in the heat generat ion.
S3F84B8_ALL-IN-ONE IH COOKER_AN_REV 0. 00 1 OVERVIEW OF IH COOKER (IHC) 1-2 1.2 KEY FEATURES OF S3F84B8 With no more discrete ICs like LM339 (comparator IC) in previous IHC soluti ons, S3F84B8 successfully integrate s four comparators, one OPA, and one IH-PWM to cont rol power directly.
S3F84B8_ALL-IN-ONE IH COOKER_AN_REV 0. 00 1 OVERVIEW OF IH COOKER (IHC) 1-3 Comparator1/2/3 has only one input with an intern al prog ra mmable reference level. It can lock the output of PWM to a safe level. Besides the delay trigger function, PWM can realize anti-mis-trigg er functio n as well.
S3F84B8_ALL-IN-ONE IH COOKER_AN_REV 0.00 2 HARDWARE IMPLEMENTATION 2-4 2 HARDW ARE IMPLEMENT A TION 2.1 SYSTEM DIAGRAM AND PIN ASSIGNMENT Figure 2-1 shows the block diagram of IH co oker system.
S3F84B8_ALL-IN-ONE IH COOKER_AN_REV 0.00 2 HARDWARE IMPLEMENTATION 2-5 In Figure 2-1 , SMPS stands for Switch Mode Power Supply. It pr ovides +18V DC and +5V DC to the syste m. Three out of four comparators are u se d in this sol uti on: one for synchronization ci rcuit an d other two for surge protection and IGBT over-voltage protection.
S3F84B8_ALL-IN-ONE IH COOKER_AN_REV 0.00 2 HARDWARE IMPLEMENTATION 2-6 2.2 POWER SUPPLY Figure 2-2 shows the circuit diagram for power supply . 1 5 6 4 8 T1 EE-19 D5 U F 4007 D4 8 D3 7 D2 6 D1 5 S1 1 S2 2 FB 3 VDD 4 U1 VIPER 12A 220 V A C D1 1N 4007 + C8 10uF / 50V VI N 1 GN D 2 VOU T 3 IC1 78L05 D 7 U F 4007 Z1 18V + C6 100uF / 25V + C2 4.
S3F84B8_ALL-IN-ONE IH COOKER_AN_REV 0.00 2 HARDWARE IMPLEMENTATION 2-7 2.3 SYNCHRONIZATION CIRCUIT R9 2KJ R23 2 K C23 1 02 +18V R12 2K7 R6 220K/0. 5W FU SE1 10A/250V 1 4 3 2 -+ BR I D GE D15X B80H18 R28 51R + C28 25V/100uF D8 4148 R36 10R R37 10K C22 0.
S3F84B8_ALL-IN-ONE IH COOKER_AN_REV 0.00 2 HARDWARE IMPLEMENTATION 2-8 IH heating is the result of Eddy current caused by LC resonance. Fo r a general cookware, the oscillation frequency may vary from 20KHz to 30KHz.
S3F84B8_ALL-IN-ONE IH COOKER_AN_REV 0.00 2 HARDWARE IMPLEMENTATION 2-9 2.4 POWER CONTROL Power is the product of voltage and current (P = V x I). Figure 2-5 a nd Figu re 2-6 show the measurement circuit of system voltage and current, separately.
S3F84B8_ALL-IN-ONE IH COOKER_AN_REV 0.00 2 HARDWARE IMPLEMENTATION 2-10 2.4.2 CURRENT MEASUREMENT R4 1 K OPA_O R1 3 3 6 K RW1 10K OPA_N C1 0 104J SY S_I + C1 2 1uF / 16V CURRE NT R 14 100K R1 5 22K S .
S3F84B8_ALL-IN-ONE IH COOKER_AN_REV 0.00 2 HARDWARE IMPLEMENTATION 2-11 2.5 SYSTEM PROTECTION 2.5.1 SURGE PROTECTION Figure 2-5 shows the circuit diagram for surge p rotection. In this figure, Surge_P specifies the negative inp u t of Comparator 1. Also, reference voltage is internally set as 0.
S3F84B8_ALL-IN-ONE IH COOKER_AN_REV 0.00 2 HARDWARE IMPLEMENTATION 2-12 2.5.4 TEMPERATURE PROTECTION Figure 2-7 shows the circuit diagram for temperature protection.
S3F84B8_ALL-IN-ONE IH COOKER_AN_REV 0.00 2 HARDWARE IMPLEMENTATION 2-13 2.6 OTHER FUNCTIONS 2.6.1 PAN DETECTION Pan-on detection is executed every 2sec when the system is idle.
S3F84B8_ALL-IN-ONE IH COOKER_AN_REV 0.00 2 HARDWARE IMPLEMENTATION 2-14 2.6.3 KEY AND DISPLAY CIRCUIT Figure 2-9 shows the circuit diagram for key and di splay.
S3F84B8_ALL-IN-ONE IH COOKER_AN_R EV 0.00 3 SOFTWARE IMPLEMENTATION 3-1 3 SOFTW ARE IMPLEMENT A TION 3.1 STATE TRANSITION DIAGRAM Figure 3-1 shows the state transition diagram.
S3F84B8_ALL-IN-ONE IH COOKER_AN_R EV 0.00 3 SOFTWARE IMPLEMENTATION 3-2 3.2 SOFTWARE DIAGRAM Figure 3-2 shows the software diagram. Figure 3-2 Software Diagram NOTE: 1. [1] Pan remove detection [1] is done by current sensing. T he pan is judged to be removed when the current is lower than a preset threshold.
S3F84B8_ALL-IN-ONE IH COOKER_AN_R EV 0.00 3 SOFTWARE IMPLEMENTATION 3-3 Figure 3-3 shows the flow chart of CMP 1/2 interrupt serv ice routine. Due to the cooperation of IH-PWM and comparators integrated in S3F84B8, only a few jobs need to be done in the ISR.
S3F84B8_ALL-IN-ONE IH COOKER_AN_R EV 0.00 3 SOFTWARE IMPLEMENTATION 3-4 3.3 INTERNAL RESOURCE ARRA NGEMENT AND CONFIGURATION Table 3-1 shows the internal resource arrangeme nt and configuration.
S3F84B8_ALL-IN-ONE IH COOKER_ AN_REV 0.00 4 APPENDIX 4-1 4 APPENDIX 4.1 ERROR CODE Table 4-1 shows the error information al ong with the error type and its code on 7seg-LED.
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