0
登录后你可以
  • 下载海量资料
  • 学习在线课程
  • 观看技术视频
  • 写文章/发帖/加入社区
创作中心
发布
  • 发文章

  • 发资料

  • 发帖

  • 提问

  • 发视频

创作活动
DRV10866DSCR

DRV10866DSCR

  • 厂商:

    BURR-BROWN(德州仪器)

  • 封装:

    WSON10_EP

  • 描述:

    5伏三相无传感器无刷直流电机驱动器

  • 数据手册
  • 价格&库存
DRV10866DSCR 数据手册
Product Folder Sample & Buy Support & Community Tools & Software Technical Documents DRV10866 SBVS206A – NOVEMBER 2012 – REVISED MARCH 2015 DRV10866 5-V, 3-Phase, Sensorless BLDC Motor Driver 1 Features 3 Description • • DRV10866 is a 3- phase, sensorless motor driver with integrated power MOSFETs with drive current capability up to 680-mA peak. DRV10866 is specifically designed for low noise and low external component count fan motor drive applications. DRV10866 has built-in overcurrent protection with no external current sense resistor needed. The synchronous rectification mode of operation achieves increased efficiency for motor driver applications. DRV10866 outputs either FG or ½ FG to indicate motor speed with open-drain output. A 150° sensorless BEMF control scheme is implemented for a 3-phase motor. DRV10866 is available in the thermally efficient 10-pin, 3-mm × 3-mm × 0.75-mm SON (DSC) package. The operating temperature is specified from –40°C to 125°C. 1 • • • • • • • • • • • Input Voltage Range: 1.65 V to 5.5 V Six Integrated MOSFETS With 680-mA Peak Output Current Ultralow Quiescent Current: 5 µA (Typical) in Standby Mode Total Driver H+L RDSOn 900 mΩ Sensorless Proprietary BMEF Control Scheme 150° Commutation Synchronous Rectification PWM Operation Selectable FG and ½ FG Open-Drain Output PWMIN Input from 15 kHz to 50 kHz Lock Detection Voltage Surge Protection UVLO Thermal Shutdown Device Information(1) PART NUMBER DRV10866 2 Applications • • • PACKAGE WSON (10) BODY SIZE (NOM) 3.00 mm × 3.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Notebook CPU Fans Game Station CPU Fans ASIC Cooling Fans DRV10866 Typical Application 100 kΩ PWM 10 COM CS 9 3 VCC FGS 8 4 U V 7 5 GND W 6 1 FG 2 PWMIN 3.8 kΩ VCC 2.2 µF M 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. DRV10866 SBVS206A – NOVEMBER 2012 – REVISED MARCH 2015 www.ti.com Table of Contents 1 2 3 4 5 6 7 Features .................................................................. Applications ........................................................... Description ............................................................. Revision History..................................................... Pin Configuration and Functions ......................... Specifications......................................................... 1 1 1 2 3 4 6.1 6.2 6.3 6.4 6.5 6.6 4 4 4 4 5 6 Absolute Maximum Ratings ...................................... ESD Ratings.............................................................. Recommended Operating Conditions....................... Thermal Information .................................................. Electrical Characteristics........................................... Typical Characteristics .............................................. 7.3 Feature Description................................................... 8 7.4 Device Functional Modes.......................................... 9 8 Application and Implementation ........................ 10 8.1 Application Information............................................ 10 8.2 Typical Application ................................................. 10 9 Power Supply Recommendations...................... 14 10 Layout................................................................... 14 10.1 Layout Guidelines ................................................. 14 10.2 Layout Example .................................................... 14 11 Device and Documentation Support ................. 15 Detailed Description .............................................. 7 11.1 Trademarks ........................................................... 15 11.2 Electrostatic Discharge Caution ............................ 15 11.3 Glossary ................................................................ 15 7.1 Overview ................................................................... 7 7.2 Functional Block Diagram ......................................... 7 12 Mechanical, Packaging, and Orderable Information ........................................................... 15 4 Revision History Changes from Original (November 2012) to Revision A • 2 Page Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1 Submit Documentation Feedback Copyright © 2012–2015, Texas Instruments Incorporated Product Folder Links: DRV10866 DRV10866 www.ti.com SBVS206A – NOVEMBER 2012 – REVISED MARCH 2015 5 Pin Configuration and Functions 10-Pins WSON with Thermal Pad DSC Package Top View FG 1 COM 2 VCC 3 U 4 GND 5 Thermal Pad (1) GND 10 PWM 9 CS 8 FGS 7 V 6 W (1) Thermal pad connected to ground. Pin Functions PIN NAME COM NO. 2 I/O DESCRIPTION I Motor common terminal input CS 9 I Overcurrent threshold setup pin. The constant current of the internal constant current source flows through the resistor connected to this pin. The other side of the resistor is connected to ground. The voltage across the resistor compares with the voltage converted from the bottom MOSFET current. If the MOSFET current is high, the part enters the overcurrent protection mode by turning off the top PWM MOSFET and holding the bottom MOSFET on. I (mA) = 3120/RCS(kΩ). Equation valid range: 300 mA < ILIMIT< 850 mA FG 1 O Frequency generator output. If the FGS pin is connected to ground, the output has a period equal to one electrical cycle (FG). If the FGS pin is connected to VCC, the output has a period equal to two electrical cycles (1/2FG). FGS 8 I FG and 1/2FG control pin. Latched upon wake-up signal from the PWM pin. For details, refer to Frequency Generator. GND 5 — Ground pin PWM 10 I PWM input pin. The PWM input signal is converted to a fixed 156-kHz switching frequency on the MOSFET driver. The PWM input signal resolution is less than 1%. This pin can also control the device and put it in or out of standby mode. After the signal at the PWM stays low (up to 500 µs), the device goes into low-power standby mode. Standby current is approximately 5 µA. The rising edge of the PWM signal wakes up the device and puts it into active mode, where it is ready to start to turn the motor. U 4 O Phase U output V 7 O Phase V output VCC 3 I Input voltage for motor and chip-supply voltage; the internal clamping circuit clamps the VCC voltage. W 6 O Phase W output Submit Documentation Feedback Copyright © 2012–2015, Texas Instruments Incorporated Product Folder Links: DRV10866 3 DRV10866 SBVS206A – NOVEMBER 2012 – REVISED MARCH 2015 www.ti.com 6 Specifications 6.1 Absolute Maximum Ratings Over operating free-air temperature range (unless otherwise noted). (1) Input voltage (2) Output voltage (2) Temperature (1) (2) MIN MAX UNIT VCC –0.3 6.0 V CS, FGS, PWM –0.3 6.0 V GND –0.3 0.3 V COM –1.0 6.0 V U, V, W –1.0 7.0 V FG –0.3 6.0 V Operating junction temperature, TJ –40 125 °C Storage temperature, Tstg –55 150 °C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. All voltage values are with respect to network ground terminal unless otherwise noted. 6.2 ESD Ratings VALUE V(ESD) (1) (2) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1) ±4000 Charged-device model (CDM), per JEDEC specification JESD22C101 (2) ±500 UNIT V JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. 6.3 Recommended Operating Conditions Over operating free-air temperature range (unless otherwise noted). Supply voltage Voltage range MIN MAX VCC 1.65 5.5 V U, V, W –0.7 6.5 V FG, CS, FGS, COM –0.1 5.5 V GND –0.1 0.1 V PWM –0.1 5.5 V –40 125 °C Operating junction temperature, TJ UNIT 6.4 Thermal Information DRV10866 THERMAL METRIC (1) DSC (WSON) UNIT 10 PINS RθJA Junction-to-ambient thermal resistance 42.3 RθJC(top) Junction-to-case (top) thermal resistance 44.5 RθJB Junction-to-board thermal resistance 17.1 ψJT Junction-to-top characterization parameter 0.3 ψJB Junction-to-board characterization parameter 17.3 RθJC(bot) Junction-to-case (bottom) thermal resistance 4.3 (1) 4 °C/W For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953. Submit Documentation Feedback Copyright © 2012–2015, Texas Instruments Incorporated Product Folder Links: DRV10866 DRV10866 www.ti.com SBVS206A – NOVEMBER 2012 – REVISED MARCH 2015 6.5 Electrical Characteristics Over operating free-air temperature range (unless otherwise noted). PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY CURRENT IVcc Supply current TA = +25°C; PWM = VCC; VCC = 5 V 2.5 3.5 mA IVcc-Standby Standby current TA = +25°C; PWM = 0 V; VCC = 5 V 5 10 µA VUVLO-Th_r UVLO threshold voltage, rising Rise threshold, TA = +25°C 1.80 1.9 V VUVLO-Th_f UVLO threshold voltage, falling Fall threshold, TA = +25°C 1.6 1.65 VUVLO-Th_hys UVLO threshold voltage, hysteresis TA = +25°C 75 150 225 TA = +25°C; VCC = 5 V; IO = 0.5 A 0.8 1.2 TA = +25°C; VCC = 4 V; IO = 0.5 A 0.9 1.4 TA = +25°C; VCC = 3 V; IO = 0.5 A 1.1 1.7 UVLO V mV INTEGRATED MOSFET RDSON Series resistance (H+L) Ω PWM VPWM-IH High-level input voltage VCC ≥ 4.5 V VPWM-IL Low-level input voltage VCC ≥ 4.5 V FPWM PWM input frequency 2.3 15 Standby mode, VCC = 5 V IPWM-Source TSTBY V 0.8 V 50 kHz 5 Active mode, VCC = 5 V 100 PWM = 0 500 µA µs FG AND FGS IFG-Sink VFGS-Th FG pin sink current FG set threshold voltage VFG = 0.3 V 5 mA FG pin output, full FG signal, VCC ≥ 4.5 V FG pin output, one-half FG signal, VCC ≥ 4.5 V 0.8 2.3 V LOCK PROTECTION TLOCK-On Lock detect time TLOCK-Off Lock release time FG = 0 2 3 4 s 2.5 5 7.5 s 680 800 920 mA CURRENT LIMIT Current limit CS pin to GND resistor = 3.9 kΩ THERMAL SHUTDOWN TSHDN Shutdown temperature threshold 160 Hysteresis 10 Submit Documentation Feedback Copyright © 2012–2015, Texas Instruments Incorporated Product Folder Links: DRV10866 °C 5 DRV10866 SBVS206A – NOVEMBER 2012 – REVISED MARCH 2015 www.ti.com 6.6 Typical Characteristics At TA = +25°C, with standard cooling fan, unless otherwise noted. 4000 4 3500 3.5 3000 Motor Speed (RPM) 4.5 ICC (mA) 3 2.5 2 1.5 1 2500 2000 1500 1000 500 0.5 0 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 0 0.5 1 1.5 2 VCC (V) 2.5 3 3.5 4 4.5 5 5.5 6 VCC (V) Figure 1. Standby Current vs Input Voltage Figure 2. RPM vs Input Voltage 4000 Motor Speed (RPM) 3500 3000 2500 2000 1500 1000 500 0 0 10 20 30 40 50 60 70 80 90 100 Duty Cycle (%) Figure 3. RPM vs Duty Cycle 6 Submit Documentation Feedback Copyright © 2012–2015, Texas Instruments Incorporated Product Folder Links: DRV10866 DRV10866 www.ti.com SBVS206A – NOVEMBER 2012 – REVISED MARCH 2015 7 Detailed Description 7.1 Overview DRV10866 is a 3-phase, sensorless motor driver with integrated power MOSFETs with drive current capability up to 680-mA peak. DRV10866 is specifically designed for low noise, low external component count fan motor drive applications. DRV10866 has built-in overcurrent protection with no external current sense resistor needed. The synchronous rectification mode of operation achieves increased efficiency for motor driver applications. DRV10866 can output either FG or ½ FG to indicate motor speed with open-drain output through FGS pin selection. A 150° sensorless BEMF control scheme is implemented for a 3-phase motor. Voltage surge protection scheme prevents input VCC capacitor from over charge during motor acceleration and deceleration modes. DRV10866 has multiple built-in protection blocks including UVLO, overcurrent protection, lock protection and thermal shutdown protection. 7.2 Functional Block Diagram Lock Detection FG PWM PWM and Standby 1/2 GND COM FGS FIL PCOM U V W Current Comparator Phase Select Phase Select VREF UVLO and Clamping VCC CS_S CS VCC Core Logic Bandgap Predriver VREF U V GND Predriver OSC (5 MHz) VCC GND Predriver Thermal Detection W GND Submit Documentation Feedback Copyright © 2012–2015, Texas Instruments Incorporated Product Folder Links: DRV10866 7 DRV10866 SBVS206A – NOVEMBER 2012 – REVISED MARCH 2015 www.ti.com 7.3 Feature Description 7.3.1 Speed Control DRV10866 can control motor speed through either the PWMIN or VCC pin. Motor speed will increase with higher PWMIN duty cycle or VCC input voltage. The curve of motor speed (RPM) vs PWMIN duty cycle or VCC input voltage is close to linear in most cases. However, motor characteristics will affect the linearity of this speed curve. DRV10866 can operate at very low VCC input voltage down to 1.65 V. The PWMIN pin is pulled up to VCC internally and frequency range can vary from 15 kHz to 50 kHz. The motor driver MOSFETs will operate at constant switching frequency 156 kHz. With this high switching frequency, DRV10866 can eliminate audible noise and reduce the ripple of VCC input voltage and current, and thus minimize EMI noise. 7.3.2 Frequency Generator The FG pin outputs a 50% duty cycle of PWM waveform in the normal operation condition. The frequency of the FG signal represents the motor speed and phase information. The FG pin is an open-drain output, so an external pullup resistor is needed when connected to an external system. During the start-up, FG output will stay at high impedance until the motor speed reaches a certain level and BEMF is detected. During lock protection condition, FG output will remain high until the motor restarts and start-up process is completed. DRV10866 can output either FG or ½ FG to indicate motor status with open-drain output through FGS pin selection. When FGS is pulled to VCC, the frequency of FG output is half of that when FGS is pulled to GND. Motor speed can be calculated based on the FG frequency when FGS is pulled to GND, which equals to: (FG ? 60) RPM = pole pairs where • FG is in hertz (Hz). (1) 7.3.3 Lock Protection If the motor is blocked or stopped by an external force, the lock protection is triggered after lock detection time. During lock detection time, the circuit monitors the PWM and FG signals. If PWM has an input signal while the FG output is in high impedance during this period, the lock protection will be enabled and DRV10866 will stop driving the motor. After lock release time, DRV10866 will resume driving the motor again. If the lock condition still exists, DRV10866 will proceed with the next lock protection cycle until the lock condition is removed. With this lock protection, the motor and device will not get over heated or be damaged. 7.3.4 Voltage Surge Protection The DRV10866 has a unique feature to clamp the VCC voltage during lock protection and standby mode. If the lock mode condition is caused by an external force that suddenly stops the motor at a high speed, or the device goes into standby mode from a high duty cycle, either situation releases the energy in the motor winding into the input capacitor. When a small input capacitor and anti-reverse diode are used in the system design, the input voltage of the IC could rise above the absolute voltage rate of the chip. This condition either destroys the device or reduces the reliability of the device. For this reason, the DRV10866 has a voltage clamp circuit that clamps the input voltage at 5.95 V, and has a hysteresis of 150 mV. This clamp circuit is only active during the lock protection cycle or when the device enters standby mode. It is disabled during normal operation. 7.3.5 Overcurrent Protection The DRV10866 can adjust the overcurrent point through an external resistor connected to the CS pin (pin 9) and ground. Without this external current sense resistor, the DRV10866 senses the current through the power MOSFET. Therefore, there is no power loss during the current sensing. The current sense architecture improves the overall system efficiency. Shorting the CS pin to ground disables the overcurrent protection feature. During overcurrent protection, the DRV10866 only limits the current to the motor; it does not shut down the device. The overcurrent limit can be set by the value of current sensing resistor through Equation 2. 3120 I (A) = RCS (W) (2) 8 Submit Documentation Feedback Copyright © 2012–2015, Texas Instruments Incorporated Product Folder Links: DRV10866 DRV10866 www.ti.com SBVS206A – NOVEMBER 2012 – REVISED MARCH 2015 Feature Description (continued) 7.3.6 Undervoltage Lockout (UVLO) The DRV10866 has a built-in UVLO function block. The hysteresis of UVLO threshold is 150 mV. The device will be locked out when VCC reaches 1.65 V and woke up at 1.8 V. 7.3.7 Thermal Shutdown The DRV10866 has a built-in thermal shunt down function, which will shut down the device when the junction temperature is over 160°C and will resume operating when the junction temperature drops back to 150°C. 7.4 Device Functional Modes 7.4.1 Start-up At start-up with motor at standstill, commutation logic starts to drive the motor in open-loop with U-phase high, Vphase low, and the W-phase shut off. During open-loop start-up phase, commutation logic advance to next state automatically as per Table 1 with duty cycle of 100% regardless of PWM input. At each state, commutation logic detects zero-crossing of back-emf at shut-off phase. Once motor reaches to sufficient speed to allow four consecutive successful back-emf zero-crossing, commutation logic switches to closed-loop operation mode as explained in next section. In certain cases, the motor may have initial speed in forward direction when the device attempts to start-up the motor again. When this occurs, device commutation logic jumps over the open-loop start-up process and goes to closed loop directly. By re-synchronizing to the spinning motor, the user achieves the fastest possible start-up time for this initial condition. 7.4.2 Motor Running at Steady-State Speed Once open-loop acceleration phase is over, motor steady state speed is determined by applied duty-cycle at PWM input. In this mode, communication logic steps thought the six states mentioned in Table 1 and next commutation state is determined by actual back-emf zero-crossing event at shut-off phase. Each state remains for 150°. This is an advanced trapezoidal method that allows the device to drive the phases gradually to the maximum current and gradually to 0. Commutation logic also provides the required 15° angle-advance from zerocrossing events to efficiently commutate the motor. For a given duty-cycle input, motor speed can be different depending upon the motor loading conditions. Device provides motor speed information at FG pin which can be used to achieve closed-loop speed control to get constant speed at varying load condition. 7.4.3 Motor Stopping Motor can be decelerated gradually by slowly reducing the PWM duty command to avoid overvoltage at DC input. When the device is commanded to decelerate very fast or stop the motor suddenly from high speed, in order to protect the IC and the system, the DRV10866 goes into AVS protection, as explained in Voltage Surge Protection. Table 1. Commutation Table COMMUTATION STATE PHASE_U PHASE_V PHASE_W State 1 High Low Off State 2 High Off Low State 3 Off High Low State 4 Low High Off State 5 Low Off High State 6 Off Low High Submit Documentation Feedback Copyright © 2012–2015, Texas Instruments Incorporated Product Folder Links: DRV10866 9 DRV10866 SBVS206A – NOVEMBER 2012 – REVISED MARCH 2015 www.ti.com 8 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 8.1 Application Information DRV10866 only requires three external components. The device needs a 2.2-μF or higher ceramic capacitor connected to VCC and ground for decoupling. During layout, the strategy of ground copper pour is very important to enhance the thermal performance. For two or more layers, use eight thermal vias. Refer to Layout Example for an example of the PCB layout. If there is no COM pin on the motor, one can be simulated. Use three resistors connected in a wye formation, one connected to U, one to V, and one to W. Connect the resistor ends opposite of the phases together. This center point is COM. To find the proper resistor value, start with a value of 10 kΩ and continue to decrease by 1 kΩ until the motor runs properly. 8.2 Typical Application 100 kΩ PWM 10 COM CS 9 3 VCC FGS 8 4 U V 7 5 GND W 6 1 FG 2 PWMIN 3.8 kΩ VCC 2.2 µF M Figure 4. Typical Application Schematic 8.2.1 Design Requirements For this design example, use the parameters listed in Table 2 as the input parameters. Table 2. Recommended Application Range MIN Motor voltage TYP 1.6 MAX 5.5 V VCC capacitor Place as close to the pin as possible Operating current Running with normal load at rated speed 500 mA Absolute max current During start-up and locked motor condition 650 mA 10 Submit Documentation Feedback 2.2 UNIT µF Copyright © 2012–2015, Texas Instruments Incorporated Product Folder Links: DRV10866 DRV10866 www.ti.com SBVS206A – NOVEMBER 2012 – REVISED MARCH 2015 8.2.2 Detailed Design Procedure • Refer to the Design Requirements and ensure the system meets the recommended application range. – Ensure the VCC level is in between 1.6 and 5.5 V – Verify the motor needs no more than 500 mA during runtime. • Follow the application and Power Supply Recommendations when constructing the schematic. – Make sure there is adequate capacitance on VCC. – Size the resistor on CS according to the details given in Feature Description. – Use a pullup on FG. – If the motor doesn’t have a common pin, create one using the method listed in Application Information. • Build the hardware according to the Layout Guidelines. • Test the system with the application's motor to verify proper operation. 8.2.3 Application Curves Figure 5. Normal Operation With Vcom at 5 V Figure 6. Normal Operation With Vcom at 1.65 V Figure 7. Normal Operation With 3-Phase Voltage and ph-A Current at 5 V Figure 8. Normal Operation With 3-Phase Voltage and ph-A Current at 1.65 V Submit Documentation Feedback Copyright © 2012–2015, Texas Instruments Incorporated Product Folder Links: DRV10866 11 DRV10866 SBVS206A – NOVEMBER 2012 – REVISED MARCH 2015 www.ti.com Figure 10. Re-Synchronizing to Spinning Motor During Power On-Off Cycle at 1.8 V FG Ch1 5 V/div VIN = 5 V, PWM Duty = 100% FG Phase Voltage Ch2 5 V/div Phase Voltage Ch2 5 V/div Ch1 5 V/div Figure 9. Re-Synchronizing to Spinning Motor During Power On-Off Cycle at 5 V Ch3 500 mA/div Ch3 500 mA/div Phase Current Time (100 ms/div) Time (100 ms/div) Figure 12. Start-Up at 10% Duty Cycle Ch1 5 V/div VIN = 5 V, PWM Duty = 50% Phase Voltage Ch2 5 V/div Ch1 5 V/div VIN = 5 V, PWM Duty = 100% Ch2 5 V/div Phase Current Ch3 500 mA/div Ch3 500 mA/div VIN = 5 V, PWM Duty = 10% Figure 11. Start-Up at 100% Duty Cycle FG 12 Phase Current FG Phase Voltage Phase Current Time (5 ms/div) Time (5 ms/div) Figure 13. Normal Operation at 100% Duty Cycle Figure 14. Normal Operation at 50% Duty Cycle Submit Documentation Feedback Copyright © 2012–2015, Texas Instruments Incorporated Product Folder Links: DRV10866 DRV10866 SBVS206A – NOVEMBER 2012 – REVISED MARCH 2015 V IN = 5V, PWM Duty = 100% V IN Ch1 5 V/div Ch1 5V/div www.ti.com Phase Voltage Ch3 100 mA/div Ch2 5V/div Ch2 5 V/div PWM Input Phase Current Ch3 500mA/div VIN 5s Input Current VIN = 5 V PWM Duty Drop 100% to 0% Time (2 ms/div) Time (2 s/div) Figure 16. Clamp Voltage at Standby Mode Figure 15. Lock Protection Ch3 Ch2 100 mA/div 2 V/div Ch1 500 mV/div 5.9 V 430 mV VIN PWM Input Input Current VIN = 5 V PWM Duty Drop 100% to 0% Time (200 ms/div) Figure 17. Clamp Voltage at Standby Mode Enlarged View Submit Documentation Feedback Copyright © 2012–2015, Texas Instruments Incorporated Product Folder Links: DRV10866 13 DRV10866 SBVS206A – NOVEMBER 2012 – REVISED MARCH 2015 www.ti.com 9 Power Supply Recommendations The DRV10866 is designed to operate from an input voltage supply, VCC, range from 1.65 V to 5.5 V. The user must place a 2.2-μF ceramic capacitor rated for VCC as close as possible to the VCC and GND pin. If the power supply ripple is more than 100 mV, in addition to the local decoupling capacitors, a bulk capacitance is required and must be sized according to the application requirements. If the bulk capacitance is implemented in the application, the user can reduce the value of the local ceramic capacitor to 220 nF. 10 Layout 10.1 Layout Guidelines The DRV10866 is simple to design with a single-layer or two layer printed-circuit-board (PCB) layout. During layout, the strategy of ground copper pour is very important to enhance the thermal performance. Use vias on the thermal pad to dissipate heat away from the IC. Refer to Figure 18 for an example of PCB layout. • Place VCC, GND, U, V, and W pins with thick traces because high current passes through these traces. • Place the 2.2-μF capacitor between VCC and GND, and as close to the VCC and GND pins as possible. • Connect the GND under the thermal pad. • Keep the thermal pad connection as large as possible, both on the bottom side and top side. It should be one piece of copper without any gaps. 10.2 Layout Example Figure 18. PCB Layout Example 14 Submit Documentation Feedback Copyright © 2012–2015, Texas Instruments Incorporated Product Folder Links: DRV10866 DRV10866 www.ti.com SBVS206A – NOVEMBER 2012 – REVISED MARCH 2015 11 Device and Documentation Support 11.1 Trademarks All trademarks are the property of their respective owners. 11.2 Electrostatic Discharge Caution These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. 11.3 Glossary SLYZ022 — TI Glossary. This glossary lists and explains terms, acronyms, and definitions. 12 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. Submit Documentation Feedback Copyright © 2012–2015, Texas Instruments Incorporated Product Folder Links: DRV10866 15 PACKAGE OPTION ADDENDUM www.ti.com 10-Dec-2020 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) (4/5) (6) DRV10866DSCR ACTIVE WSON DSC 10 3000 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 85 10866 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of