LV8811GEVB Evaluation Board User Guide LV8811GEVB Evaluation Board User Guide NOTICE TO CUSTOMERS The LV8811 Evaluation Board is intended to be used for ENGINEERING DEVELOPMENT, DEMONSTRATION OR EVALUATION PURPOSES ONLY and is not considered by ON SEMICONDUCTOR to be a finished end product fit for general customer use. Information contained in this document regarding the device application and the like is provided only for your convenience. ON SEMICONDUCTOR MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. The user indemnifies ON SEMICONDUCTOR fully in respect of any claim made against ON SEMICONDUCTOR arising from the use of the LV881 Evaluation Board. WARNING The LV8811 Evaluation Board is referenced to the DC supply ground and is not earthed. Hence, it carries a risk of electric shock. Caution is required when the power is applied to the kit. Only qualified technicians and/or engineers should handle the kit. When the power is applied to the kit, it is absolutely must that users only probe provided test points and do not touch any other point on the kit. Page 2 LV8811GEVB Evaluation Board User Guide The LV8811G/13G Evaluation Board is designed to provide an easy and quick development platform for three phase single sensor BLDC motor control applications using LV8811G/13G. The board enables users to develop their customized system solution by utilizing various features of LV8811G/13G and provides real-time development capabilities. 1. Overview The LV8811G/13G board consists of the following I/O and components: 1. Three phases motor output 2. Hall sensor bias output 3. Hall sensor input 4. PWM input 5. FG output 6. Monitoring outputs and setting inputs (optional) 7. Configuration setting resistors Figure 1: LV8811G Evaluation Board Page 3 LV8811GEVB Evaluation Board User Guide 2. Features The followings are key features of the board. • Supports 12.0V (typ.) supply voltage • Speed control input: PWM duty cycle • Selectable Hall sensor type; sensor or IC o Factory default: configured for sensor type • Configureable minimum PWM duty cycle o Factory-default: 14% for enable (start) 8% for disable (stop) • Configurable lead angle range and its proportional constant to rotational speed o Factory-default: 15degree at the lowest FG frequency Lead angle = 0.15 × 𝑓𝑓𝑓𝑓𝐹𝐹𝐹𝐹 + 15 Pin name PWM I/O IN FG VTH RFS GND VCC PWR RF VREG CPWM HB IN1/IN2 U/V/W Out MDS OUT NA Monitor IN/OUT IN Floating Monitor OUT Monitor OUT IN OUT IN PH1/PH2 IN description Speed control PWM input. 20kHz – 50kHz 3Vpp The higher duty cycle gives the higher rotational speed. 3Vpp pulse whose frequency is proportional to motor speed Not applicable Current feedback signal can be monitored Ground Power supply input. Typical 12V is assumed. No connection Power supply node for the power stage 3V voltage regulator output Triangle waveform of the PWM generator can be monitored Bias voltage output for a Hall sensor. 1.18V DC Hall sensor signal input Motor driver output Voltage level of MDS pin (minimum duty cycle setting) can be monitored. Voltage level of PH1 and PH2 pins (lead angle setting) can be monitored. Page 4 LV8811GEVB Evaluation Board User Guide 3. Quick Start The following steps show the operation to spin a motor. step 1. Connect motor phases and Hall sensor bias, ground and signal outputs. The rotational direction determination is shown in Table 2. Terminals are provided with: • For motor phases o Through halls UO, VO and WO inside the circle, o Pins UO, WO and VO, or o Pin header CON1 pin 1, 2 and 3 for U, V and W individually (Hirose DF1-8) • Hall sensor bias o Pin HB and Pin GND o Pin header CON1 pin 4 and 5 for HB and GND individually • Hall sensor signal o Pins IN1 and IN2 o Pin header CON1 pin 6 and 7 for IN1 and IN2 individually step 2. Connect PWM signal to PWM pin of the board. The connection points, described in step 1 and 2, are shown in figure 2 and 3. step 3. Set appropriate duty cycle of PWM. step 4. Connect power supply, and turn it on. That’s all. Table 2. Hall sensor connection and rotational direction Motor Type IN1 IN2 Direction 3S2P 6S4P Hall minus Hall plus CW 12S8P 3S4P 6S8P Hall plus Hall minus CCW 9S12P CCW CW V W U H Page 5 LV8811GEVB Evaluation Board User Guide Figure 2. Key Input/Ouput Highlighted 1. UO 2. VO 3. WO 4. HB 5. GND 6. IN1 7. IN2 8. NC Figure 3. Pin header CON1 Page 6 LV8811GEVB Evaluation Board User Guide 4. Minimum Duty Cycle Setting To set the minimum duty cycle, a user needs to solder chip resistors. The minimum duty cycle for disable (stop) D MIND is determined by the voltage level V MDS at MDS pin. 48 − 4 (𝑉𝑉 𝐷𝐷𝑀𝑀𝑀𝑀𝑀𝑀𝑀𝑀 = − 0.141) + 4 = 15.9𝑉𝑉𝑀𝑀𝑀𝑀𝑀𝑀 + 1.758 2.906 − 0.141 𝑀𝑀𝑀𝑀𝑀𝑀 when 𝑉𝑉𝑀𝑀𝑀𝑀𝑀𝑀 = 0 𝐷𝐷𝑀𝑀𝑀𝑀𝑀𝑀𝑀𝑀 = 8% There is 6% of histeresisy between enable (start) and disable (stop) tarnsistions. 𝐷𝐷𝑀𝑀𝑀𝑀𝑀𝑀𝑀𝑀 = 𝐷𝐷𝑀𝑀𝑀𝑀𝑀𝑀𝑀𝑀 + 6 The voltage level V MDS in this board is determined by resistors. 𝑅𝑅17 + 𝑅𝑅18 𝑉𝑉𝑀𝑀𝑀𝑀𝑀𝑀 = 𝑉𝑉𝑅𝑅𝑅𝑅𝑅𝑅 𝑅𝑅15 + 𝑅𝑅16 + 𝑅𝑅17 + 𝑅𝑅18 𝑉𝑉𝑅𝑅𝑅𝑅𝑅𝑅 = 3[V] in the board 5. Lead angle tuning To tune the lead angle, a user needs to solder chip resistors. The minimum lead angle at the lowest rotational speed P 0 is determined by the voltage level V PH1 at PH1 pin. 60 − (−30) (𝑉𝑉 𝑃𝑃0 = − 0.141) − 30 = 32.55𝑉𝑉𝑃𝑃𝑃𝑃1 − 34.59 2.906 − 0.141 𝑃𝑃𝑃𝑃1 when 𝑉𝑉𝑃𝑃𝑃𝑃1 = 0 𝑃𝑃𝑂𝑂 = 15° The lead angle P is dynamically adjusted with respect to FG frequency fFG. 𝑃𝑃 = 𝐴𝐴𝑓𝑓𝑓𝑓𝐹𝐹𝐹𝐹 + 𝑃𝑃0 0.3 (𝑉𝑉 − 0.141) = 0.1085𝑉𝑉𝑃𝑃𝑃𝑃2 𝐴𝐴 = 2.906 − 0.141 𝑃𝑃𝑃𝑃2 when 𝑉𝑉𝑃𝑃𝑃𝑃2 = 0 𝐴𝐴 = 0.15°/𝐻𝐻𝐻𝐻 The voltage levels V PH1 and V PH2 in this board are determined by resistors. 𝑅𝑅5 + 𝑅𝑅6 𝑉𝑉𝑃𝑃𝑃𝑃1 = 𝑉𝑉𝑅𝑅𝑅𝑅𝑅𝑅 𝑅𝑅3 + 𝑅𝑅4 + 𝑅𝑅5 + 𝑅𝑅6 𝑅𝑅9 + 𝑅𝑅10 𝑉𝑉𝑃𝑃𝑃𝑃2 = 𝑉𝑉𝑅𝑅𝑅𝑅𝑅𝑅 𝑅𝑅7 + 𝑅𝑅8 + 𝑅𝑅9 + 𝑅𝑅10 𝑉𝑉𝑅𝑅𝑅𝑅𝑅𝑅 = 3[V] in the board *The calculating formula of the adjustment of MDS and PH1,PH2 becomes the reference level. Please confirm real movement with a motor to use. Page 7 LV8811GEVB Evaluation Board User Guide APPENDIX A: schematic PWR VCC UO VO WO GND CPWM VTH CM1 CM2 RF R2 RFS PGND 20 2 UO NC 19 3 RF WO 18 4 RFS SGND 17 5 VCC CPWM 16 6 REG VTH 15 C1 SGND SGND C4 C2 R3 R7 R4 R8 R16 SGND MDS 14 7 PH１ 8 PH2 IN2 13 9 PWM HB 12 SGND R17 R5 R9 C3 R6 R10 MN1 R15 C5 VREG R19 VO R23 PGND 1 R21 R1 R22 ZD1 R20 D1 R18 10 FG IN1 11 H R11 SGND MDS SGND R12 (Hall sensor) R26 R24 R25 C6 WO R27 R14 HB SGND VO UO PH2 PH1 SGND R13 PWM FG SGND SGND IN1 IN2 (NC) VIN1 WO V+ UO VO IN2 (Connector) The hall sensor is not mounted on the board. Page 8 LV8811GEVB Evaluation Board User Guide APPENDIX B: Bill of Material Part No. D1 ZD1 Value - Part No. R11 R12 Value 1k_ohm 10k_ohm CM1 4.7uF R13 4.7k_ohm CM2 - R14 0_ohm C1 1,500pF R15 - C2 1uF R16 1k_ohm C3 0.01uF R17 47k_ohm C4 1,000pF R18 1k_ohm C5 0_ohm R19 - C6 - R20 - CON1 DF1- 8P-2.5DSA(05) R21 1k_ohm R1 0.1_ohm R22 - R2 1k_ohm R23 47k_ohm R3 - R24 0_ohm R4 1k_ohm R25 - R5 47k_ohm R26 - R6 1k_ohm R27 - R7 - R8 1k_ohm MN1 - R9 47k_ohm R10 1k_ohm - Page 9 LV8811GEVB Evaluation Board User Guide APPENDIX C: When speed adjustment is performed by VTH. Part No. D1 ZD1 Value - Part No. R11 R12 Value 10k_ohm CM1 4.7uF R13 4.7k_ohm CM2 - R14 0_ohm C1 1,500pF R15 - C2 1uF R16 1k_ohm C3 0.01uF R17 47k_ohm C4 1,000pF R18 1k_ohm C5 390pF R19 0_ohm C6 - R20 6.8k_ohm CON1 DF1- 8P-2.5DSA(05) R21 1.8k_ohm R1 0.2_ohm (x2) R22 12k_ohm R2 1k_ohm R23 47k_ohm R3 - R24 0_ohm R4 1k_ohm R25 - R5 47k_ohm R26 - R6 1k_ohm R27 - R7 - R8 1k_ohm MN1 3LN01S (ON SEMI) R9 47k_ohm R10 1k_ohm - Page 10 LV8811GEVB Evaluation Board User Guide APPENDIX D: About COM1 connector. - An exclusive connector is attached to header COM1. When hooks of both sides are unlock, it divides into two parts. Wiring is pinched by two parts. Photograph of completion example is shown below. Page 11