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MP6551GQB-P

MP6551GQB-P

  • 厂商:

    MPS(美国芯源)

  • 封装:

    VFQFN14

  • 描述:

    双极性 电机驱动器 功率 MOSFET 逻辑 14-QFN(2.5x3)

  • 数据手册
  • 价格&库存
MP6551GQB-P 数据手册
MP6551 14V, 5A, H-Bridge Motor Driver DESCRIPTION FEATURES The MP6551 is an H-bridge motor driver. Its 2.5V to 14V input voltage (VIN) range allows the device to operate from a variety of battery power sources, including single-cell lithium-ion batteries, dual-cell lithium-ion batteries, and 3cell to 6-cell alkaline batteries. Its low on resistance enables it to achieve up to 5A of output current (IOUT) across its entire VIN range.            The MP6551 can drive a brushed DC motor in bidirectional applications or two DC motors in unidirectional, speed-controlled applications. Full protection features include over-current protection (OCP), under-voltage lockout (UVLO) protection, and thermal shutdown. The MP6551 is available (2.5mmx3mm) package. in a QFN-14 2.5V to 14V Operating Input Range Up to 5A Output Current (IOUT) Full H-Bridge or Dual Half H-Bridge Driver 15mΩ Low On Resistance per MOSFET Current Measurement Over-Current Protection (OCP) Under-Voltage Lockout (UVLO) Protection Thermal Shutdown Sleep Mode during Low-Power Fault Indication Output Available in a QFN-14 (2.5mmx3mm) Package APPLICATIONS   Mini Drones Battery-Powered Toys All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are trademarks of Monolithic Power Systems, Inc. or its subsidiaries. TYPICAL APPLICATION VIN µC IN1 EN1 IN2 EN2 VIN MP6551 nFAULT OUT1 CM1 CM2 Drives 1x bidirectional or 2x unidirectional motors SR OUT2 GND MP6551 Rev. 1.0 7/7/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 1 MP6551 – 14V, 5A, H-BRIDGE MOTOR DRIVER ORDERING INFORMATION Part Number* MP6551GQB Package QFN-14 (2.5mmx3mm) Top Marking See Below MSL Rating 1 * For Tape & Reel, add suffix -Z (e.g. MP6551GQB-Z). TOP MARKING BCR: Product code of MP6551GQB Y: Year code WW: Week code LLL: Lot number PACKAGE REFERENCE TOP VIEW OUT1 GND OUT2 7 CM2 12 6 SR IN1 13 5 IN2 EN1 14 4 EN2 CM1 11 nFAULT 10 1 9 2 8 3 OUT1 VIN OUT2 QFN-14 (2.5mmx3mm) MP6551 Rev. 1.0 7/7/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 2 MP6551 – 14V, 5A, H-BRIDGE MOTOR DRIVER PIN FUNCTIONS Pin # 1, 10 Name OUT1 (1) 2 VIN (1) 3, 8 OUT2 (1) 4 EN2 5 IN2 6 7 9 11 SR CM2 GND (1) CM1 12 nFAULT 13 IN1 14 EN1 Description Output terminal 1. Input supply voltage. Decouple the VIN pin to GND using a ≥100nF ceramic capacitor. Additional bulk capacitance may be required. Output terminal 2. OUT2 enable input. Pull the EN2 pin high to enable OUT2; pull EN2 low to force OUT2 into a high-impedance (Hi-Z) state. EN2 is pulled down internally. OUT2 control input. Pull the IN2 pin high to make OUT2 go high; pull IN2 low to make OUT2 go low. IN2 is pulled down internally. Slew rate control. Connect a resistor from SR to GND. OUT2 current measurement output. System ground. OUT1 current measurement output. Fault indication. The nFAULT pin is an open-drain output. If an over-current (OC) or over-temperature (OT) fault occurs, nFAULT is pulled low. OUT1 control input. Pull the IN1 pin high make OUT1 go high; pull IN1 low to make OUT1 go low. IN1 is pulled down internally. OUT1 enable input. Pull EN1 high to enable OUT1; pull EN1 low force OUT1 into a high-impedance (Hi-Z) state. EN1 is pulled down internally. Note: 1) These pins should have as much PCB copper attached to them as possible. The copper removes the dissipated heat in the device. θJA θJC ABSOLUTE MAXIMUM RATINGS (2) Thermal Resistance (5) Supply voltage (VIN) ..................... -0.3V to +16V OUTx voltage (VOUTX) ................... -0.7V to +16V All other pins to GND .................. -0.3V to +6.5V Continuous power dissipation (TA = 25°C) (3)….. ……………………………………………...1.92W Storage temperature ................ -55°C to +150°C Junction temperature ............................... 150°C Lead temperature (solder) ....................... 260°C QFN-14 (2.5mmx3mm)...........65......13.....°C/W Recommended Operating Conditions (4) Supply voltage (VIN) ........................ 2.5V to 14V Peak output current (IOUT) ............................±5A Operating junction temp (TJ) .... -40°C to +125°C MP6551 Rev. 1.0 7/7/2021 Notes: 2) Exceeding these ratings may damage the device. 3) The maximum allowable power dissipation is a function of the maximum junction temperature TJ (MAX), the junction-toambient thermal resistance θJA, and the ambient temperature TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by PD (MAX) = (TJ (MAX) - TA) / θJA. Exceeding the maximum allowable power dissipation can cause excessive die temperature, and the device may go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 4) The device is not guaranteed to function outside of its operating conditions. 5) Measured on JESD51-7, 4-layer PCB. MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 3 MP6551 – 14V, 5A, H-BRIDGE MOTOR DRIVER ELECTRICAL CHARACTERISTICS VIN = 4V, TA = 25°C, unless otherwise noted. Parameter Power Supply Input supply voltage Quiescent current Internal MOSFETs High-side MOSFET (HS-FET) output on resistance Low-side MOSFET (LS-FET) output on resistance Body diode forward voltage Control Logic Input logic low threshold Input logic high threshold Symbol VIN IQ ISLEEP Condition Typ Max Units 2.5 10.5 14 4 14.5 V mA µA 2.5 No load current Sleep mode RDS(ON)_HS IOUT = 1A, TJ = 25°C 15 19 mΩ RDS(ON)_LS IOUT = 1A, TJ = 25°C 12 16 mΩ IOUT = 2A 0.8 VF VIN_LOW VIN_HIGH IIN_HIGH Logic input current IIN_LOW RPD Internal pull-down resistance nFault Output (Open-Drain Output) Low output voltage VOUT_LOW High output leakage current IOUT_HIGH Protection Circuits Under-voltage lockout (UVLO) VUVLO_RISING rising threshold VUVLO_HYS UVLO hysteresis IOCP1 Peak current limit IOCP2 Thermal shutdown (6) TSD Thermal shutdown hysteresis (6) TSD_HYS Current Sense (CS) VIH = 5V VIL = 0.8V 2.5 Sink Source From EN1 = EN2 = 0 From EN1 = 1 or EN2 = 1 fPWM RSR = 0Ω tPD_RISING Propagation delay (6) tPD_FALLING Output enable time (6) tOUT_EN Output disable time (6) tOUT_DIS +20 +20 IOUT = 5mA VOUT = 3.3V tSLEEP tWAKE tRISING tFALLING 1.5 -20 -20 500 LS-FET current = 1A LS-FET current = -1A CS output current V 0.8 CS ratio CS output voltage swing Sleep mode entry time Sleep mode exit time Pulse-width modulation (PWM) frequency Output rise time (6) Output fall time (6) Min RSR = 3MΩ, 10Ω load to GND IN1/IN2 rising to OUT1/OUT2 rising IN1/IN2 falling to OUT1/OUT2 falling EN1/EN2 to OUT1/OUT2, active EN1/EN2 to OUT1/OUT2, Hi-Z 10 8.5 500 14 11.5 150 15 1/ 10,000 120 -91 3.57 1 36 V V µA µA kΩ 0.5 1 V µA 2.7 V mV A A °C °C A/A µA µA V ms µs 500 kHz 3 µs 500 ns 400 ns 95 ns 170 ns Note: 6) Not tested in production. MP6551 Rev. 1.0 7/7/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 4 MP6551 – 14V, 5A, H-BRIDGE MOTOR DRIVER TYPICAL CHARACTERISTICS HS-FET On Resistance vs. Temperature 20 2.5 ON RESISTANCE (mΩ) UVLO RISING THRESHOLD (V) UVLO Rising Threshold vs. Temperature 2.49 2.48 2.47 2.46 18 16 14 12 10 2.45 -50 -20 10 40 70 TEMPERATURE (°C) 100 -50 130 IOUT = 1A -50 -20 13 10 40 70 100 TEMPERATURE ( C) 130 OCP THRESHOLD (A) OCP THRESHOLD (A) MP6551 Rev. 1.0 7/7/2021 10 40 70 100 TEMPERATURE ( C) 130 VIN = 4V 12 11.5 11 10.5 10 9.5 9 -50 -20 10 40 70 100 TEMPERATURE ( C) 130 LS-FET OCP Threshold vs. Temperature 12 11.5 11 10.5 10 9.5 9 8.5 8 7.5 7 -20 10 40 70 100 TEMPERATURE ( C) 12.5 HS-FET OCP Threshold vs. Temperature -50 -20 Sleep Mode Current vs. Temperature SLEEP MODE CURRENT (µA) ON RESISTANCE (mΩ) LS-FET On Resistance vs. Temperature 18 17 16 15 14 13 12 11 10 9 8 IOUT = 1A 130 16 15.5 15 14.5 14 13.5 13 12.5 12 11.5 11 10.5 10 -50 -20 10 40 70 100 TEMPERATURE ( C) MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 130 5 MP6551 – 14V, 5A, H-BRIDGE MOTOR DRIVER TYPICAL CHARACTERISTICS (continued) Current Sense Output Current vs. Temperature 135 133 131 129 127 125 123 121 119 117 115 LS-FET current = 1A 97 OUTPUT CURRENT (µA) OUTPUT CURRENT (µA) Current Sense Output Current vs. Temperature -50 -20 10 40 70 100 TEMPERATURE ( C) 130 LS-FET current = -1A 96.5 96 95.5 95 94.5 94 -50 -20 10 40 70 100 TEMPERATURE ( C) 130 Rise/Fall Time vs. SR Resistor IOUT = 2A RISE/FALL TIME (ns) 3500 3000 2500 2000 1500 Rise time 1000 Fall time 500 0 0 MP6551 Rev. 1.0 7/7/2021 500 1000 1500 2000 2500 3000 3500 SR RESISTOR (kΩ) MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 6 MP6551 – 14V, 5A, H-BRIDGE MOTOR DRIVER TYPICAL PERFORMANCE CHARACTERISTICS VIN = 14V, IOUT = 2A, OUT1 fSW = 20kHz, OUT2 LS-FET on, VREF = 3.3V, current-sense resistor divider = 5kΩ, TA = 25°C, resistor + inductor load = 1.4Ω + 0.19mH between OUT1 and OUT2. Steady State Power Ramping Up 50% duty cycle 50% duty cycle CH1: VIN1 CH1: VIN CH2: VOUT1 CH2: VOUT1 CH3: CM2 CH3: CM2 CH4: lOUT CH4: lOUT Power Ramping Down EN Ramping Up 50% duty cycle 50% duty cycle CH1: EN1 CH1: VIN CH2: VOUT1 CH2: VOUT1 CH3: CM2 CH3: CM2 CH4: lOUT CH4: lOUT EN Ramping Down Sleep Mode Entry 50% duty cycle 50% duty cycle CH1: EN1 CH1: EN1/2 CH2: VOUT1 CH2: VOUT1 CH3: CM2 CH3: CM2 CH4: lOUT CH4: lOUT MP6551 Rev. 1.0 7/7/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 7 MP6551 – 14V, 5A, H-BRIDGE MOTOR DRIVER TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN = 14V, IOUT = 2A, OUT1 fSW = 20kHz, OUT2 LS-FET on, VREF = 3.3V, current-sense resistor divider = 5kΩ, TA = 25°C, resistor + inductor load = 1.4Ω + 0.19mH between OUT1 and OUT2. Sleep Mode Recovery 50% duty cycle CH1: VEN1/ VEN2 CH2: VOUT1 CH3: CM2 CH4: lOUT MP6551 Rev. 1.0 7/7/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 8 MP6551 – 14V, 5A, H-BRIDGE MOTOR DRIVER FUNCTIONAL BLOCK DIAGRAM VIN VIN UVLO OTP Charge Pump nFAULT IN1 EN1 IN2 Drives 1x bidirectional motor or 2x unidirectional motors OUT1 Control Logic Gate Drivers EN2 DCM OUT2 µC Current Limit CM1 CM2 VREF GND SR Figure 1: Functional Block Diagram MP6551 Rev. 1.0 7/7/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 9 MP6551 – 14V, 5A, H-BRIDGE MOTOR DRIVER OPERATION The MP6551 is an H-bridge motor driver that integrates four N-channel power MOSFETs. It can achieve 5A of peak output current (IOUT) across a 2.5V to 14V input voltage (VIN) range, and is designed to drive brushed DC motors, solenoids, and other loads. Input Logic Each of the MP6551’s half H-bridges is controlled independently via the IN1, IN2, EN1, and EN2 input pins. Table 1 shows the control logic for each input pin. Table 1: Input Pin Control Logic INx X 0 1 ENx 0 1 1 OUTx Z L H Sleep Mode Pull the EN1 and EN2 pins low to enable sleep mode. In sleep mode, all internal circuitry (including the gate driver charge pump) is disabled, and the outputs are turned off. If either EN1 or EN2 is enabled again, then the device resumes normal operation. There is a short delay time (tWAKE) before the output(s) are enabled again. Current Measurement Outputs The internal current-sensing circuitry senses the current flowing into each output. The CM1 and CM2 pins source or sink a current proportional to the current flowing into each of the half H-bridges’ low-side MOSFETs (LSFETs). The current flowing through the LS-FET is sensed in both the forward and reverse directions. To convert this current into a voltage (e.g. to input to an analog-to-digital converter [ADC]), a termination resistor (RREF) is required to create a reference voltage (VREF). If no current is flowing, then the resultant output is equal to VREF. If the current is flowing, then the voltage is above or below VREF. (VOUT_SENSE) can be calculated with Equation (1): VOUT_SENSE = VREF + (RREF x ILOAD) / 10,000 (1) To terminate the outputs while using an ADC with inputs that are ratiometric to its supply voltage, connect two equal-value resistors to the ADC supply and GND. The resulting ADC code is half-scale at zero current. Figure 2 shows the current measurement circuit. OUTx Slew Rate (SR) Control The MP6551 has a slew rate (SR) control pin. Use a resistor to connect the SR pin to GND to adjust the slew rate (output rise/fall time). This feature can reduce electromagnetic interference (EMI) caused by output transitions. The rise/fall time is proportional to the resistance used. Short SR to GND to generate a fast rise/fall time (about 100ns). A 3MΩ resistor generates a rise/fall time of about 3µs. Fault Indication The MP6551’s fault indication (nFAULT) pin is an open-drain output that requires an external pull-up resistor. The nFAULT pin indicates if a fault has occurred. If an over-current (OC) or over-temperature (OT) fault occurs, nFAULT is pulled low. Once the fault condition is removed, nFAULT is pulled high via the pull-up resistor. MP6551 Rev. 1.0 7/7/2021 x1 IOUT_SENSE x10,000 CMx VOUT_SENSE ILOAD x1 RREF GND VREF Matched IOUT_SENSE = ILOAD / 10,000 VOUT_SENSE = VREF + (IOUT_SENSE x RREF ) VOUT_SENSE = VREF + (ILOAD x RREF ) / 10,000 Figure 2: Current Measurement Circuit If only the total current needs to be measured (e.g. the current of a full H-bridge driver), then the CM1 and CM2 pins can be connected to measure the sum of the two half H-bridge currents. Over-Current Protection (OCP) Over-current protection (OCP) protects the device from damage due to excessive current at the outputs. If the current through a MOSFET exceeds the current limit threshold, then the foldback current limit function limits IOUT to a safe level and nFAULT goes low. MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 10 MP6551 – 14V, 5A, H-BRIDGE MOTOR DRIVER Over-current (OC) conditions are sensed on both the high-side MOSFET (HS-FET) and LSFET, protecting the device from damage during a short to GND, short to supply, or a short across the motor winding. Thermal Shutdown If the die temperature exceeds about 150°C, all MOSFETs are disabled and nFAULT goes low. Once the die temperature drops below about 135°C, the MP6551 resumes normal operation. Note that a sustained short circuit or OC fault can result in excessive die temperature, which may cause the device to go into thermal shutdown. Under-Voltage Lockout (UVLO) Protection If the VIN drops below the under-voltage lockout (UVLO) threshold, all circuitry is disabled and the device’s internal logic is reset. Once VIN rises above the UVLO threshold again, the MP6551 resumes normal operation. MP6551 Rev. 1.0 7/7/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 11 MP6551 – 14V, 5A, H-BRIDGE MOTOR DRIVER APPLICATION INFORMATION External Component Selection Bypass the VIN pin to GND using a 100nF ceramic X7R capacitor located as close to the IC as possible. Place an additional 1µF to 10µF ceramic capacitor nearby the 100nF capacitor. Depending on the supply impedance and distance to other large capacitors, an electrolytic bulk capacitor may also be required to stabilize VIN. The CM1 and CM2 pins are current measurement outputs. CM1 and CM2 are typically converted to a voltage via a termination resistor (RREF) that creates a reference voltage (VREF). A resistor divider connected between the ADC supply and GND can provide a ratiometric voltage for an AC/DC converter. PCB Layout Guidelines Efficient PCB layout is critical for stable operation. For the best results, refer to Figure 3 and follow the guidelines below: 1. Bypass VIN to GND using a 100nF ceramic X7R capacitor located as close to the IC as possible. 2. Place an additional 1µF to 10µF ceramic capacitor nearby the 100nF capacitor. An electrolytic bulk capacitor may be required to stabilize VIN. 3. The VIN, OUT1, and OUT2 pins dissipate heat from the motor driver. To reduce heat on the device, add as many copper planes to these pins as possible. 4. Solid planes on the inner layers of the device can also dissipate heat. Place multiple thermal vias on the VIN, OUTx, and GND copper planes to dissipate heat from the outer layers to the copper plane(s). Figure 3: Recommended PCB Layout MP6551 Rev. 1.0 7/7/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 12 MP6551 – 14V, 5A, H-BRIDGE MOTOR DRIVER TYPICAL APPLICATION CIRCUIT VIN IN1 EN1 IN2 EN2 µC nFAULT VIN C3 100nF + C1 470μF MP6551 nFAULT CM1 C2 10μF OUT1 OUT1 CM1 CM2 CM2 SR RSR 0Ω to 500kΩ OUT2 OUT2 GND VREF VCC R2 4.99kΩ R3 4.99kΩ CM1 CM2 R4 4.99kΩ R1 499Ω R5 4.99kΩ nFAULT Figure 4: Typical Application Circuit MP6551 Rev. 1.0 7/7/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 13 MP6551 – 14V, 5A, H-BRIDGE MOTOR DRIVER PACKAGE INFORMATION QFN-14 (2.5mmx3mm) MP6551 Rev. 1.0 7/7/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 14 MP6551 – 14V, 5A, H-BRIDGE MOTOR DRIVER CARRIER INFORMATION Pin1 1 1 ABCD 1 1 ABCD ABCD ABCD Feed Direction Part Number MP6551GQB-Z MP6551 Rev. 1.0 7/7/2021 Package Description QFN-14 (2.5mmx3mm) Quantity/ Reel Quantity/ Tube Quantity/ Tray Reel Diameter 5000 N/A N/A 13in Carrier Carrier Tape Width Tape Pitch 12mm MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 8mm 15 MP6551 – 14V, 5A, H-BRIDGE MOTOR DRIVER REVISION HISTORY Revision # Revision Date 1.0 07/07/2021 Description Pages Updated Initial Release - Notice: The information in this document is subject to change without notice. Please contact MPS for current specifications. Users should warrant and guarantee that third-party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. MP6551 Rev. 1.0 7/7/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 16
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