HIGH-VOLTAGE MONOLITHIC IC ECN3021 ECN3021 is a single chip three-phase bridge inverter IC which has 6 IGBTs in the circuit. Especially, it is very suitable for controlling the speed of 3-phase DC brushless motors to which converted AC200~230V power supplies are applied. Fig. 1 shows the internal block diagram. Functions ∗ ∗ ∗ ∗ ∗ ∗ Integrated charge pump circuit Integrated free wheel diodes Integrated PWM circuit Integrated FG circuit Integrated over current protection circuit Integrated rotating direction monitor circuit Features ∗ Speed control for a 3-phase DC brushless motor is available with an external microprocessor. ∗ Bottom arm circuits can be operated in 20kHz chopping frequency of PWM. RU CB + C2 + - RW C0 VCC VS D1 D2 RV VCC(15V) HU HV HW C+ - C1 VS1 CL C- VS2 VB VB supply Clock Charge Pump FG FG DM Microprocessor Analog output Comparator VSP Hall ICs Top Arm Driver Rotating Direction Monitor MU MV 3-Phase Distributor MW + CMP - Bottom Arm Driver SAW wave Generator Over Current Sense + Clock CR VTR Motor GL Vref 0.5V RS GH1 GH2 RTR CTR RS Fig. 1 Block diagram PDE-3021-0 ECN3021 1. 2. General (1) Type (2) Application (3) Structure (4) Package ECN3021 3-phase DC Brushless Motor Monolithic IC SP-23T Maximum Allowable Ratings (Ta=25°C) No. Items Symbols 1 Output Device VSM Breakdown Voltage 2 Supply Voltage VCC 3 Input Voltage VIN 4 5 6 Terminal VS1,VS2 MU,MV,MW VCC VSP,RS HU,HV,HW MU,MV,MW MU,MV,MW MU,MV,MW Ratings 500 Unit V 18 -0.5 ~ VB+0.5 V V Condition Output Current IMDC 0.7 A Peak Output Current IMP 1.0 A Note Output Current in Start IOM 1.0 A Note Up and Accelerating Note 7 Operating Junction Tjop °C -20 ~ +135 Temperature 8 Storage Temperature Tstg °C -40 ~ +150 Note 1. Please note that acumulated duty of a period exceeding 0.7A has to be less than 5% of flowing period. Note 2. Thermal Resistance Rj-c = 4°C/W Rj-a = 40°C/W 3. 1 1 2 total current Recommended Operating Conditions No. Items Symbols Terminal MIN TYP MAX Unit Condition 1 Supply Voltage VS VS1,2 50 325 370 V 2 VCC VCC 13.5 15 16.5 V Note. Recommended Safe Operating Area(SOA) It is recommended that this IC should be used within the SOA as shown below, where IM and VM are the current and the voltage at the terminals connected to motor coils when the phase is changed (turned off). 1.0 Safe Operating Area IM (A) 0 370 0 VM (V) PDE-3021-0 ECN3021 4. Electrical Characteristics (Ta=25°C) Unless otherwise specified, VCC=15V, VS=325V Suffix T; Top arm No. Items Symbols Terminal MIN TYP MAX Unit 1 Standby Current IS VS1,2 2.5 5.0 mA 2 ICC VCC 10 20 mA 3 Output device FVD VFT MU,MV,MW 4.0 6.0 V 4 VFB MU,MV,MW 4.0 6.0 V 5 Turn On TdONT MU,MV,MW 0.5 3.0 µs 6 Delay Time TdONB MU,MV,MW 0.5 3.0 µs 7 Turn Off TdOFFT MU,MV,MW 3.0 6.0 µs 8 Delay Time TdOFFB MU,MV,MW 1.0 3.0 µs 9 Free Wheel VFDT MU,MV,MW 4.0 6.0 V 10 Diode FVD VFDB MU,MV,MW 4.0 6.0 V 11 Output Resistance RVTR VTR 200 400 Ω 12 H or L Level of VSAWH CR 4.9 5.4 6.1 V 13 SAW wave VSAWL CR 1.7 2.1 2.5 V 14 Amplitude of VSAWW CR 2.8 3.3 3.8 V SAW wave 15 Reference Voltage Vref RS 0.45 0.5 0.55 V 16 Hall signal VIH HU,HV,HW 3.5 V 17 Input Voltage VIL HU,HV,HW 1.5 V 18 Hall signal IIL HU,HV,HW -100 µA Input Current B; Bottom arm Condition VSP=0V I=0.35A I=0.35A I=0.35A Resistance Load I=0.35A Note 2 Note 3 HU,HV,HW=0V Note 1 Pull Up Resistance 19 VSP Input Current IVSPH VSP - - 100 µA VSP=5.0V Note 1 Pull Down Resistance 20 VB Output Voltage VB CB 6.8 7.5 8.2 V 21 VB Output Current IB CB 25 mA 22 FG,DM VOL FG,DM 1.0 V Output Voltage 23 FG,DM ROL FG,DM 200 400 Ω Output Resistance 24 LVSD Output Voltage LVSDON Vcc,MU, 10.0 11.5 12.9 V 25 LVSD recover Voltage LVSDOFF MV,MW 10.1 12.0 13.0 V 26 LVSD reset hysterisis Vrh 0.1 0.5 0.9 V Note 1. Pull Up Resistance and Pull Down Resistance are typically 200 kΩ. Note 2. Please see Note 2 in item 6 for determining the frequency of SAW wave. Note 3. The amplitude of SAW(VSAWW) is determined by the following equation, VSAWW=VSAWH-VSAWL (V) Note 4. The equivalent circuit around FG and DM terminal is shown in Fig. 2 Note 5. LVSD: Low Voltage Shut Down delta Vload=0.1V IOL=-5mA Note 4 Note.5 VCC FG or DM Fig.2 Equivalent circuit around FG or DM PDE-3021-0 ECN3021 5. Function 5.1 Truth Table Input HV L L H H H L L H HU H H H L L L L H 5.2 MU HW H L L L H H L H Top OFF OFF OFF ON ON OFF OFF OFF MV Bottom ON ON OFF OFF OFF OFF OFF OFF Top ON OFF OFF OFF OFF ON OFF OFF MW Bottom OFF OFF ON ON OFF OFF OFF OFF Top OFF ON ON OFF OFF OFF OFF OFF Bottom OFF OFF OFF OFF ON ON OFF OFF Timing Chart HU Input HV HW MU Output MV Output MW Output FG Output PDE-3021-0 ECN3021 5.3 PWM Operation The PWM signal is produced by comparing the input voltage at VSP terminal with the voltage from the internal SAW wave. The duty of the PWM signal can be changed by the triangular wave amplitude level, from the minimum point of VSAWL to the maximum point of VSAWH, and when the level is under VSAWL, the duty becomes 0%, and when the level is over VSAWH, the duty becomes 100%. In addition, chopping with the PWM signal is operated in the bottom arm circuit. 5.4 Over Current Limiting Operation This IC detects over current by checking the voltage drop at the external resistance RS. When the input voltage at RS terminal exceeds the internal reference voltage(Vref), this IC turns off the output of the bottom arm circuit. After over current detection, reset operation is done at every period of the inner clock signal (VTR terminal). 5.5 Rotating Direction Sense Operation The rotation direction of the motor is detected by the signal at DM terminal. Table 1 shows the output signal for the rotation direction. Table 1. Output signal for the rotation direction Rotating Direction Output (DM terminal) U-V-W L U-W-V H 5.6 Vcc under voltrage Detection When Vcc supply voltage becomes below LVSDON(11.5V typ), all of the IGBTs shut off. This condition is recovered when Vcc supply voltage becomes greater than LVSDOFF(12.0V typ). PDE-3021-0 ECN3021 6. Standard Application Component Recommended Value C0 More than 0.22 µF C1,C2 D1,D2 Rs Usage for inner power supply(VB). for charge pump 0.5 µF ± 20% Hitachi DFG1C6(glass mold) for charge pump Hitachi DFM1F6(resin mold) or equivalent parts Note 1. for current limiting Remark stress voltage is VB stress voltage is VCC 600V/1.0A trr≤100ns CTR for PWM Note 2. 1800 pF ± 5% RTR for PWM Note 2. 22 kΩ ± 5% Note 1. Start up current is limited by the following equation. IO = Vref / Rs (A) Note 2. PWM frequency is approximately determined by the following equation. fPWM = -1 / (2C*R*Ln(1-3.5/5.5)) ; Ln is natural logarithm = 0.494 / (C*R) (Hz) Note 3. It is recommended that RU,RV,RW should be 5.6 kΩ ± 5%. RU + C2 + - RW C0 CB D1 D2 RV VCC(15V) HU HV HW C+ - VS C1 CL C- VS1 VS2 VB VCC VB supply Clock Charge Pump FG FG DM Rotating Direction Monitor Microprocessor Analog output Comparator VSP Hall ICs Top Arm Driver MV 3-Phase Distributor MW + CMP - Bottom Arm Driver SAW wave Generator VTR Motor Over Current Sense + Clock CR MU GL Vref 0.5V RS GH1 GH2 RTR CTR RS Fig 3. Block diagram and external elements PDE-3021-0 ECN3021 7. Terminal 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 MV VS1 MU GH1 RS HU HV HW DM FG VSP VTR CR CB CL CC+ GL VCC GH2 3 2 1 MW VS2 (Marking side) Fig.4 Pin Connection 8. Package Outline ECN3021SP ECN3021SPV ECN3021SPR PDE-3021-0 ECN3021 8. Package Dimensions (1) ECN3021SP (2) ECN3021SPV PDE-3021-0 ECN3021 (3) ECN3021SPR 31MAX (30) 28 ±0.3 20 ±0.2 3.5 ±0.3 φ3.6 1.26 ±0.24 23 ±0.25 0.6 ±0.1 1.27 ±0.5 2.54 ±0.5 2.54 +10° 0° −0° 0.25 typ 1.8 typ 7.1±0.5 4.9±0.5 23.97±0.3 +10° 0° −0° 2.2±0.3 (9) (7.7) 1 1.23 12.3±0.5 3.6 4.1 ±0.3 11.2 ±0.3 14.7MAX ±0.2 0.5 ±0.2 ±0.2 ±0.5 PDE-3021-0