DRI0040

HR8833 DUAL H-BRIDGE MOTOR DRIVER DESCRIPTION FEATURES The HR8833 provides a dual bridge motor driver solution for toys, printers, and other mechatronic applications. The device has two H-bridge drivers, and can drive two DC brush motors, a bipolar stepper motor, solenoids, or other inductive  Dual-H-Bridge Current-Control Motor Driver  Capable of Driving Two DC Motors or One Stepper Motor  Low MOSFET On-Resistance: HS + LS 400 mΩ  Output Current: loads. TSSOP16:1.5-A RMS per H-Bridge The output driver block of each H-bridge consists of N-channel SOP16: 1.4-A RMS per H-Bridge power MOSFET’s configured as an H-bridge to drive the motor  Outputs Can Be Paralleled for 3-A RMS windings. Each H-bridge includes circuitry to regulate or limit the  Wide Power Supply Voltage Range: 2.7 V – 12.8 V winding current.  PWM Winding Current Regulation/Limiting Internal shutdown functions with a fault output pin are provided for over current protection, short circuit protection, under voltage lockout and overtemperature. A low-power sleep mode is also provided. The HR8833 is packaged in a 16-pin TSSOP package with PowerPAD™. The second package is SOP16. PACKAGE APPLICATIONS  Battery-Powered Toys  POS Printers  Video Security Cameras  Office Automation Machines  Gaming Machines  Robotics SOP16 TSSOP16 ORDERING INFORMATION Part Number Package HR8833MTE TSSOP16 with exposed thermal pad HR8833SP SOP16 嘉兴禾润电子科技有限公司 www.heroic.com.cn Page 1 of 17 01/2016, V2.1 HR8833 DUAL H-BRIDGE MOTOR DRIVER Functional Block Diagram 嘉兴禾润电子科技有限公司 www.heroic.com.cn Page 2 of 17 01/2016, V2.1 HR8833 DUAL H-BRIDGE MOTOR DRIVER ABSOLUTE MAXIMUM RATINGS at Ta = 25°C Parameter Symbol Conditions Ratings Unit Load Supply Voltage VM -0.3 – 13 V Output Current IOUT ±1.5 A Logic Input voltage VIN -0.7 to 7 V Sense Voltage VSENSE -0.3 to 0.5 V Operating Ambient Temperature TA -20 to 85 °C Maximum Junction TJ(max) 150 °C Storage Temperature Tstg -55 to 150 °C Range S RECOMMENDED OPERATING CONDITIONS at Ta = 25°C Min NOM Max Unit Load Supply Voltage Range VM 2.7 - 12.8 V Logic Input Voltage Range VIN 0 - 5.75 V Continuous RMS or DC output current per bridge IOUT TSSOP16 IOUT SOP16 0 1.5 0 1.4 A NOTE: 1. Load Supply Voltage Range: HR8833 can be powered with a supply voltage from 2.7 to 12.8 V for step motor. When DC motor, you should keep the load supply voltage below 10.8V. 2. Take care the distinguish of PIN between two package. 嘉兴禾润电子科技有限公司 www.heroic.com.cn Page 3 of 17 01/2016, V2.1 HR8833 DUAL H-BRIDGE MOTOR DRIVER ELECTRICAL CHARACTERISTICS at Ta = 25°C, VM= 5 V PARAMETER TEST CONDITIONS MIN TYP MAX UNIT POWER SUPPLY IVM VM operating supply current VM = 5 V, xIN1 = 0 V, xIN2 = 0 V 1.7 3 mA IVMQ VM sleep mode supply current VM = 5 V 1.6 2.5 uA VUVLO VM undervoltage lockout voltage VM falling 2.6 V VHYS VM undervoltage lockout hysteresis 90 mV LOGIC-LEVEL INPUTS VIL VIH Input low voltage Input High voltage nSLEEP 0.5 All other pins 0.7 nSLEEP 2.5 All other pins VHYS Input hysteresis RPD Input pull-down resistance V 2 0.4 V nSLEEP 500 kΩ All except nSLEEP 150 IIL Input low current VIN = 0 IIH Input high current VIN = 3.3 V, nSLEEP VIN = 3.3 V, all except nSLEEP tDEG V Input deglitch time 1 uA 6.6 13 uA 16.5 33 450 ns nFAULT OUTPUT (OPEN-DRAIN OUTPUT) VOL Output low voltage IO = 5 mA 0.5 V IOH Output high leakage current VO = 3.3 V 1 uA H-BRIDGE FETS HS FET on resistance RDS(ON) LS FET on resistance IOFF IOFF VM = 5 V, I O = 500 mA 200 VM = 2.7 V, I O = 500 mA 250 VM = 5 V, I O = 500 mA 180 VM = 2.7 V, I O = 500 mA 220 VM = 5 V, VOUT = 0 V -1 mΩ 1 uA MOTOR DRIVER fPWM Current control PWM frequency Internal PWM frequency 50 kHz 嘉兴禾润电子科技有限公司 www.heroic.com.cn Page 4 of 17 01/2016, V2.1 HR8833 DUAL H-BRIDGE MOTOR DRIVER tR Rise time VM =5V, 16Ω to GND, 10% to 90% 240 ns tF Fall time VM =5V, 16Ω to GND, 10% to 90% 200 ns tPROP Propagation delay INx to OUTx VM = 5 V 0.9 us tDEAD Dead time VM = 5 V 340 ns PROTECTION CIRCUITS IOCP Overcurrent protection trip level 2.5 tDEG OCP Deglitch time 2.25 us tOCP Overcurrent protection period 1.35 ms tTSD Thermal shutdown temperature Die temperature A 150 160 180 ℃ 160 200 240 mV CURRENT CONTROL VTRIP xISEN trip voltage tBLANK Current sense blanking time 2.6 us SLEEP MODE tWAKE Startup time nSLEEP inactive high to H-bridge on 0.2 1 嘉兴禾润电子科技有限公司 www.heroic.com.cn Page 5 of 17 01/2016, V2.1 ms HR8833 DUAL H-BRIDGE MOTOR DRIVER FUNCTIONAL DESCRIPTION The HR8833 device is an integrated motor driver solution for brushed DC or bipolar stepper motors. The device integrates two NMOS H-bridges and current regulation circuitry. The HR8833 can be powered with a supply voltage from 2.7 to 12.8 V and can provide an output current up to 1.5 A RMS. A simple PWM interface allows easy interfacing to the controller circuit. The current regulation is a 13-μs fixed off-time slow decay. The device includes a low-power sleep mode, which lets the system save power when not driving the motor. PWM Motor Drivers HR8833 contains two identical H-bridge motor drivers with current-control PWM circuitry. A block diagram of the circuitry is shown below: H-Bridge and Current-Chopping Circuitry Bridge Control and Decay Modes The AIN1 and AIN2 input pins control the state of the AOUT1 and AOUT2 outputs; similarly, the BIN1 and BIN2 input pins control the state of the BOUT1 and BOUT2 outputs. Below table shows the logic. xIN1 xIN2 xOUT1 xOUT2 FUNCTION 0 0 Z Z Coast / fast decay 0 1 L H Reverse 1 0 H L Forward 1 1 L L Brake / slow decay H-Bridge Logic 嘉兴禾润电子科技有限公司 www.heroic.com.cn Page 6 of 17 01/2016, V2.1 HR8833 DUAL H-BRIDGE MOTOR DRIVER The inputs can also be used for PWM control of the motor speed. When controlling a winding with PWM, when the drive current is interrupted, the inductive nature of the motor requires that the current must continue to flow.This is called recirculation current. To handle this recirculation current, the H-bridge can operate in two different states, fast decay or slow decay. In fast decay mode, the H-bridge is disabled and recirculation current flows through the body diodes; in slow decay, the motor winding is shorted. To PWM using fast decay, the PWM signal is applied to one xIN pin while the other is held low; to use slow decay, one xIN pin is held high. PWM Control of Motor Speed xIN1 xIN2 PWM 0 Forward PWM, fast decay FUNCTION 1 PWM Forward PWM, slow decay 0 PWM Reverse PWM, fast decay PWM 1 Reverse PWM, slow decay Below figure shows the current paths in different drive and decay mode. Drive and Decay Modes Current Control The current through the motor windings may be limited, or controlled, by a fixed-frequency PWM current regulation, or current chopping. For DC motors, current control is used to limit the start-up and stall current of the motor. For stepper motors, current control is often used at all times. When an H-bridge is enabled, current rises through the winding at a rate dependent on the DC voltage and inductance of the winding. If the current reaches the current chopping threshold, the bridge disables the current until the beginning of the next PWM cycle. Note that immediately after the current is enabled, the voltage on the xISEN pin is ignored for a fixed period of time before enabling the current sense circuitry. This blanking time is fixed at 2.6 μs. This blanking time also sets the minimum on time of the PWM when operating in current chopping mode. The PWM chopping current is set by a comparator which compares the voltage across a current sense resistor connected to the xISEN pins with a reference voltage. The reference voltage is fixed at 200 mV. 嘉兴禾润电子科技有限公司 www.heroic.com.cn Page 7 of 17 01/2016, V2.1 HR8833 DUAL H-BRIDGE MOTOR DRIVER The chopping current is calculated in next equation： Example: If a 1-Ω sense resistor is used, the chopping current will be 200 mV/1 Ω = 200 mA. Once the chopping current threshold is reached, the H-bridge switches to slow decay mode. Winding current is re-circulated by enabling both of the low-side FETs in the bridge. This state is held until the beginning of the next fixed-frequency PWM cycle. Note that if current control is not needed, the xISEN pins should be connected directly to ground. nSLEEP Operation Driving nSLEEP low will put the device into a low power sleep state. In this state, the H-bridges are disabled, the gate drive charge pump is stopped, all internal logic is reset, and all internal clocks are stopped. All inputs are ignored until nSLEEP returns inactive high. When returning from sleep mode, some time (up to 1 ms) needs to pass before the motor driver becomes fully operational. To make the board design simple, the nSLEEP can be pulled up to the supply (VM). It is recommended to use a pullup resistor when this is done. This resistor limits the current to the input in case VM is higher than 6.5 V. Internally, the nSLEEP pin has a 500-kΩ resistor to GND. It also has a clamping zener diode that clamps the voltage at the pin at 6.5 V. Currents greater than 250 μA can cause damage to the input structure. Hence the recommended pullup resistor would be between 20 kΩ and 75 kΩ. Protection Circuits The HR8833 is fully protected against undervoltage, overcurrent and overtemperature events. Overcurrent Protection (OCP) An analog current limit circuit on each FET limits the current through the FET by limiting the gate drive. If this analog current limit persists for longer than the OCP deglitch time, all FETs in the H-bridge will be disabled and the nFAULT pin will be driven low. The driver will be re-enabled after the OCP retry period (tOCP) has passed. nFAULT becomes high again at this time. If the fault condition is still present, the cycle repeats. If the fault is no longer present, normal operation resumes and nFAULT remains deasserted. Please note that only the H-bridge in which the OCP is detected will be disabled while the other bridge will function normally. Overcurrent conditions are detected independently on both high and low side devices; i.e., a short to ground, supply, or across the motor winding will all result in an overcurrent shutdown. Note that overcurrent protection does not use the current sense circuitry used for PWM current control, so functions even without presence of the xISEN resistors. Thermal Shutdown (TSD) If the die temperature exceeds safe limits, all FETs in the H-bridge will be disabled and the nFAULT pin will be driven low. Once the die temperature has fallen to a safe level operation will automatically resume. Undervoltage Lockout (UVLO) If at any time the voltage on the VM pin falls below the undervoltage lockout threshold voltage, all circuitry in the device will be disabled, and all internal logic will be reset. Operation will resume when VM rises above the UVLO threshold. nFAULT is driven low in the event of an undervoltage condition. 嘉兴禾润电子科技有限公司 www.heroic.com.cn Page 8 of 17 01/2016, V2.1 HR8833 DUAL H-BRIDGE MOTOR DRIVER Parallel Mode APPLICATIONS INFORMATION The two H-bridges in the HR8833 can be connected in parallel for double the current of a single H-bridge. The internal dead time in the HR8833 prevents any risk of cross-conduction (shoot-through) between the two bridges due to timing differences between the two bridges. The drawing below shows the connections. Note, below example is basis on TSSOP16 package. Parallel Mode THERMAL INFORMATION Maximum Output Current In actual operation, the maximum output current achievable with a motor driver is a function of die temperature. This in turn is greatly affected by ambient temperature and PCB design. Basically, the maximum motor current will be the amount of current that results in a power dissipation level that, along with the thermal resistance of the package and PCB, keeps the die at a low enough temperature to stay out of thermal shutdown. The dissipation ratings given in the datasheet can be used as a guide to calculate the approximate maximum power dissipation that can be expected to be possible without entering thermal shutdown for several different PCB constructions. However, for accurate data, the actual PCB design must be analyzed via measurement or thermal simulation. Thermal Protection The HR8833 has thermal shutdown (TSD) as described above. If the die temperature exceeds approximately 150°C, the device will be disabled until the temperature drops by 45°C. Any tendency of the device to enter TSD is an indication of either excessive power dissipation, insufficient heatsinking, or too high an ambient temperature. Power Dissipation Power dissipation in the HR8833 is dominated by the DC power dissipated in the output FET resistance, or 嘉兴禾润电子科技有限公司 www.heroic.com.cn Page 9 of 17 01/2016, V2.1 HR8833 DUAL H-BRIDGE MOTOR DRIVER RDS(ON). There is additional power dissipated due to PWM switching losses, which are dependent on PWM frequency, rise and fall times, and VM supply voltages. These switching losses are typically on the order of 10% to 30% of the DC power dissipation. The DC power dissipation of one H-bridge can be roughly estimated by next equation: where PTOT is the total power dissipation, HS - RDS(ON) is the resistance of the high side FET, LS - RDS(ON) is the resistance of the low side FET, and IOUT(RMS) is the RMS output current being applied to the motor. Note that RDS(ON) increases with temperature, so as the device heats, the power dissipation increases. This must be taken into consideration when sizing the heatsink. Heatsinking The PowerPAD packages use an exposed pad to remove heat from the device. For proper operation, this pad must be thermally connected to copper on the PCB to dissipate heat. On a multi-layer PCB with a ground plane, this can be accomplished by adding a number of vias to connect the thermal pad to the ground plane. On PCBs without internal planes, copper area can be added on either side of the PCB to dissipate heat. If the copper area is on the opposite side of the PCB from the device, thermal vias are used to transfer the heat between top and bottom layers. 嘉兴禾润电子科技有限公司 www.heroic.com.cn Page 10 of 17 01/2016, V2.1 HR8833 DUAL H-BRIDGE MOTOR DRIVER Layout Guidelines Bypass the VM terminal to GND using a low-ESR ceramic bypass capacitor with a recommended value of 10 μF rated for VM. This capacitor should be placed as close to the VM pin as possible with a thick trace or ground plane connection to the device GND pin and PowerPAD. Bypass VINT to ground with a ceramic capacitor rated 6.3 V. Place this bypassing capacitor as close to the pin as possible. Layout Example 嘉兴禾润电子科技有限公司 www.heroic.com.cn Page 11 of 17 01/2016, V2.1 HR8833 DUAL H-BRIDGE MOTOR DRIVER FULL STEP 嘉兴禾润电子科技有限公司 www.heroic.com.cn Page 12 of 17 01/2016, V2.1 HR8833 DUAL H-BRIDGE MOTOR DRIVER HALF STEP Pin-out Diagram TOP VIEW TSSOP16 SOP16 嘉兴禾润电子科技有限公司 www.heroic.com.cn Page 13 of 17 01/2016, V2.1 HR8833 DUAL H-BRIDGE MOTOR DRIVER Terminal List Table NAME PIN TSSOP Pin Description EXTERNAL COMPONENTS OR CONNECTIONS SOP POWER AND GROUND GND 13 1 PPAD - - VM 12 16 Device ground Both the GND pin and device PowerPAD must be connected to ground Device power Connect to motor supply. A 10uF (minimum) supply ceramic bypass capacitor to GND is recommended. VINT 14 2 Internal supply Bypass to GND with 2.2uF, 6.3-V capacitor VCP 11 15 High-side gate Connect a 0.01uF, 16V (minimum) X7R ceramic capacitor to AIN1 16 4 Bridge A input 1 Logic input controls state of AOUT1. Internal pulldown. AIN2 15 3 Bridge A input 2 Logic input controls state of AOUT2. Internal pulldown. BIN1 9 13 Bridge B input 1 Logic input controls state of BOUT1. Internal pulldown. BIN2 10 14 Bridge B input 2 Logic input controls state of BOUT2. Internal pulldown. nSLEEP 1 5 Sleep mode input Logic high to enable device, logic low to enter low-power sleep CONTROL mode STATUS nFAULT 8 12 Fault output Logic low when in fault condition (overtemp, overovercurrent) 3 7 Bridge A ground / Connect to current sense resistor for bridge A, or GND if Isense current control Bridge B ground / Connect to current sense resistor for bridge B, or GND if Isense current control 6 Bridge A output 1 Connect to motor winding A OUTPUT AISEN BISEN 6 10 AOUT1 2 AOUT2 4 8 Bridge A output 2 BOUT1 7 11 Bridge B output 1 BOUT2 5 9 Bridge B output 2 Connect to motor winding B 嘉兴禾润电子科技有限公司 www.heroic.com.cn Page 14 of 17 01/2016, V2.1 HR8833 DUAL H-BRIDGE MOTOR DRIVER TSSOP16 with exposed thermal pad 嘉兴禾润电子科技有限公司 www.heroic.com.cn Page 15 of 17 01/2016, V2.1 HR8833 DUAL H-BRIDGE MOTOR DRIVER SOP16 嘉兴禾润电子科技有限公司 www.heroic.com.cn Page 16 of 17 01/2016, V2.1 HR8833 DUAL H-BRIDGE MOTOR DRIVER IMPORTANT NOTICE 注意 Jiaxing Heroic Electronic Technology Co., Ltd (HT) reserves the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any products or services without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. 嘉兴禾润电子科技有限公司（以下简称HT）保留对产品、服务、文档的任何修改、更正、提高、改善和其他改变，或停止提 供任何产品和服务，并不提供任何通知的权利。客户在下单和生产前应确保所得到的信息是最新、最完整的。 HT assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using HT components. HT对相关应用的说明和协助以及客户产品的板级设计不承担任何责任。 HT products are not authorized for use in safety-critical applications (such as life support devices or systems) where a failure of the HT product would reasonably be expected to affect the safety or effectiveness of that devices or systems. HT的产品并未授权用于诸如生命维持设备等安全性极高的应用中。 The information included herein is believed to be accurate and reliable. However, HT assumes no responsibility for its use; nor for any infringement of patents or other rights of third parties which may result from its use. 本文中的相关信息是精确和可靠的，但HT并不对其负责，也不对任何可能的专利和第三方权利的侵害负责。 Following are URLs and contacts where you can obtain information or supports on any HT products and application solutions: 下面是可以联系到我公司的相关联系方式： 嘉兴禾润电子科技有限公司 Jiaxing Heroic Electronic Technology Co., Ltd. 地址: 浙江省嘉兴市凌公塘路3339号JRC大厦A座三层 Add: A 3rd floor, JRC Building, No. 3339, LingGongTang Road, Jiaxing, Zhejiang Province 销售/Sales: 0573-82583866 支持/Support: 0573-82586151 传真/Fax: 0573-82585078 E-mail: sales@heroic.com.cn 网址/Website: www.heroic.com.cn 嘉兴禾润电子科技有限公司 www.heroic.com.cn Page 17 of 17 01/2016, V2.1