MP6522GU-Z

MP6522 35V, 3.2A, H-Bridge Motor Driver The Future of Analog IC Technology DESCRIPTION FEATURES The MP6522 is an H-bridge motor driver that operates from a supply voltage of up to 35V and delivers a peak motor current of up to 3.2A. The MP6522 is typically used to drive DC brush motors.     An internal current-sensing circuit provides an output with a voltage proportional to the load current. Additionally, cycle-by-cycle current regulation and limiting is provided. These features do not require the use of a low-ohm shunt resistor.  Full protection features include over-current protection (OCP), input over-voltage protection (OVP), under-voltage lockout (UVLO), and thermal shutdown. The MP6522 is available in a 24-pin QFN (5mmx5mm) package with an exposed thermal pad.          Wide 5.4V to 35V Input Voltage Range 3.2A Maximum Output Current Internal, Full, H-Bridge Driver Cycle-by-Cycle Current Regulation and Limiting Low On Resistance (HS: 300mΩ; LS: 300mΩ) Simple, Versatile Logic Interfaces 3.3V and 5V Compatible Logic Inputs Over-Current Protection (OCP) Over-Voltage Protection (OVP) Thermal Shutdown Under-Voltage Lockout (UVLO) Fault Indication Output Thermally Enhanced Surface-Mount Package Available in a QFN-24 (5mmx5mm) Package APPLICATIONS   Solenoid Drivers DC Brush Motor Drives 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” and “The Future of Analog IC Technology” are registered trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION 1.0MP6522 Rev. 1.02 www.MonolithicPower.com 3/21/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 1 MP6522 – 35V, 3.2A, H-BRIDGE MOTOR DRIVER ORDERING INFORMATION Part Number* MP6522GU* Package QFN-24 (5mmx5mm) Top Marking See Below * For Tape & Reel, add suffix –Z (e.g. MP6522GU–Z) TOP MARKING MPS: MPS prefix YY: Year code WW: Week code MP6522: Part number LLLLLLL: Lot number PACKAGE REFERENCE TOP VIEW QFN-24 (5mmx5mm) 1.0MP6522 Rev. 1.02 www.MonolithicPower.com 3/21/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 2 MP6522 – 35V, 3.2A, H-BRIDGE MOTOR DRIVER ABSOLUTE MAXIMUM RATINGS (1) Supply voltage (VIN) ....................... -0.3V to 40V OUTx voltage (VOUT1/2) .................... -0.7V to 40V VCP, CPB .............................. VIN to VIN + 6.5V ISET ............................................... -0.3V to 4.5V All other pins to GND ..................... -0.3V to 6.5V ESD rating (HBD).......................................... 2kV Continuous power dissipation (TA = +25°C) (2) ..................................................................... 3.5W Storage temperature .................-55°C to +150°C Junction temperature .............................. +150°C Lead temperature (solder) ...................... +260°C Recommended Operating Conditions (3) Thermal Resistance (4) θJA θJC QFN-24 (5mmx5mm) ............... 36 ...... 8 .... °C/W NOTES: 1) Exceeding these ratings may damage the device. 2) 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 produces an excessive die temperature, causing the regulator to go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 3) The device is not guaranteed to function outside of its operating conditions. 4) Measured on JESD51-7, 4-layer PCB. Supply voltage (VIN) ........................ 5.4V to 35V Peak output current (IOUT) .......................... ±3.2A Load current (IVISEN) ................................... ±2mA Operating junction temp. (TJ). ...-40°C to +125°C 1.0MP6522 Rev. 1.02 www.MonolithicPower.com 3/21/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 3 MP6522 – 35V, 3.2A, H-BRIDGE MOTOR DRIVER ELECTRICAL CHARACTERISTICS VIN = 24V, TA = +25°C, unless otherwise noted. Parameter Power Supply Input supply voltage Quiescent current Charge pump frequency Internal MOSFETs Symbol VIN IQ ISLEEP fCP RHS Output on resistance RLS Body diode forward voltage Control Logic Input logic low threshold Input logic high threshold Logic input current VF VIL VIH IIN(H) IIN(L) RPD Internal pull-down resistance nFault Output (Open-Drain Output) Output low voltage VOL Output high leakage current IOH Protection Circuits VIN_RISE UVLO rising threshold VHYS UVLO hysteresis VOVP Input OVP threshold ∆VOVP Input OVP hysteresis IOCP1 Over-current trip level IOCP2 tOCPD Over-current deglitch time tOCP Over-current retry time TTSD Thermal shutdown ∆TTSD Thermal shutdown hysteresis Current Control Off time ISET current Current trip voltage (rising) Current trip voltage (falling) VISEN Output Output voltage accuracy Condition Min Typ Max Units 5.4 24 35 V 1.5 2 mA 1 µA kHz 0.45 Ω VIN = 24V, nSLEEP = 1, no load current VIN = 24V, nSLEEP = 0 660 VIN = 24V, IOUT = 1A, TJ = 25°C VIN = 24V, IOUT = 1A, TJ = 85°C VIN = 24V, IOUT = 1A, TJ = 25°C VIN = 24V, IOUT = 1A, TJ = 85°C IOUT = 1.5A VIH = 5V VIL = 0.8V 0.3 0.35 0.3 Ω 0.45 0.35 Ω 2 -12 -2 1.1 V 0.8 V V µA µA kΩ 12 2 530 IO = 5mA VO = 3.3V 36 Sinking Sourcing tITRIP IISET VITRIP-R VITRIP-F At VISEN At VISEN ∆VVISEN VISET > 0.5V 3.2 3.2 After ITRIP 90 1.44 1.15 5.1 310 38 2000 4 4 500 0.9 165 30 17 100 1.5 1.2 Ω 0.5 1 V µA 5.3 V mV V mV A A ns ms °C °C 40 5.2 5.2 110 1.56 1.25 µs µA/A V V 5 % -5 1.0MP6522 Rev. 1.02 www.MonolithicPower.com 3/21/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 4 MP6522 – 35V, 3.2A, H-BRIDGE MOTOR DRIVER Current Sense ISET vs. Temperature ISET Resistor = 1kΩ IOUT = 1A 300 200 250 200 150 150 100 100 ISET 50 106 105 104 103 ISET(μA) 250 VISEN(mV) ISET(μA) TYPICAL CHARACTERISTICS VISEN 0.5 1 1.5 IOUT(A) 2 100 98 0 0 101 99 50 0 102 97 2.5 -50 Current Trip Voltage (Rising) vs. Temperature -20 10 40 70 TEMPERATURE(o C) 100 130 Current Trip Voltage (Falling) vs. Temperature 1.52 1.22 1.215 1.515 VTRIP(V) VTRIP(V) 1.21 1.205 1.51 1.505 1.2 1.195 1.19 1.5 -50 -20 10 40 70 100 TEMPERATURE(o C) -50 130 HS RON vs. Temperature 390 390 370 370 350 350 RON(mΩ) RON(mΩ) 410 330 310 330 310 290 290 270 270 250 10 40 70 TEMPERATURE(o C) 130 IOUT = 1A 410 -20 10 40 70 100 TEMPERATURE(o C) LS RON vs. Temperature IOUT = 1A -50 -20 100 130 250 -50 -20 10 40 70 TEMPERATURE(o C) 100 1.0MP6522 Rev. 1.02 www.MonolithicPower.com 3/21/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 130 5 MP6522 – 35V, 3.2A, H-BRIDGE MOTOR DRIVER TYPICAL PERFORMANCE CHARACTERISTICS VIN = 24V, IOUT = 1A, TA = 25°C, unless otherwise noted. VOUT 20V/div. VISET 1V/div. VISEN 1V/div. IOUT 1A/div. VIN 10V/div. VIN 10V/div. VISEN 500mV/div. VOUT 10V/div. VISEN 500mV/div. VOUT 10V/div. IOUT 500mA/div. IOUT 500mA/div. VnFAULT 1V/div. VnSLEEP 2V/div. VnSLEEP 2V/div. VISEN 500mV/div. VISEN 500mV/div. VOUT 10V/div. VOUT 10V/div. IOUT 500mA/div. IOUT 500mA/div. VnFAULT 1V/div. VnFAULT 1V/div. VOUT1 20V/div. VOUT2 20V/div. VOUT1 20V/div. VOUT1 20V/div. VOUT2 20V/div. IOUT 5A/div. VOUT2 20V/div. IOUT 5A/div. IOUT 5A/div. 1.0MP6522 Rev. 1.02 www.MonolithicPower.com 3/21/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 6 MP6522 – 35V, 3.2A, H-BRIDGE MOTOR DRIVER PIN FUNCTIONS Pin # 1 24 2, 3, 16, 17 Name IN1 IN2 4 nSLEEP GND 5, 20, 21, 22 6, 7 OUT1 8 ISET 9, 10, 11 VIN 12, 13 14 15 18 19 OUT2 CPA CPB VCP VISEN 23 nFAULT EP GND NC Description Control inputs. IN1 and IN2 have internal pull-down resistors. System ground connection. Sleep mode input. Set nSLEEP to logic low to enter low-power sleep mode. nSLEEP has an internal pull-down resistor. No connection. Output terminal 1. Current programming resistor. Connect a resistor from ISET to ground to set the current limit and VISEN output voltage. Input supply voltage. Decouple VIN to GND with a ceramic capacitor ≥100nF to GND. Output terminal 2. Charge pump flying capacitor. Connect a 100nF ceramic capacitor between CPA and CPB. Charge pump output. Connect a 100nF capacitor from VCP to VIN. Current sense output voltage. Fault indication. nFAULT is an open-drain output. nFAULT is at logic low when in a fault condition (OCP, OTP, OVP). Exposed pad. The exposed pad must be connected to ground. 1.0MP6522 Rev. 1.02 www.MonolithicPower.com 3/21/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 7 MP6522 – 35V, 3.2A, H-BRIDGE MOTOR DRIVER BLOCK DIAGRAM Figure 1: Functional Block Diagram 1.0MP6522 Rev. 1.02 www.MonolithicPower.com 3/21/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 8 MP6522 – 35V, 3.2A, H-BRIDGE MOTOR DRIVER OPERATION The MP6522 is an H-bridge motor driver that integrates four N-channel power MOSFETs with 3.2A of peak current capability. The MP6522 operates over a wide 5.4V to 35V input voltage range and is designed to drive DC brush motors, solenoids, and other loads. Current Sensing The current flowing in the two low-side MOSFETs is sensed with an internal currentsensing circuit. A voltage proportional to the output current is sourced on VISEN. The VISEN output voltage scaling is set by a resistor connected between ISET and ground. For 1A of output current, 100µA of current is sourced into the resistor connected to ISET. For example, if a 10kΩ resistor is connected between ISET and ground, the output voltage on VISEN is 1V/A of output current. The current is sensed when one of the low-side MOSFETs is turned on, including during slow decay (brake) mode. The load current applied to VISEN should be kept below 2mA with no more than 500pF of capacitance. Current Limit and Regulation The current in the outputs is limited using constant-off-time pulse-width modulation (PWM) control circuitry. In PWM, a diagonal pair of MOSFETs is turned on initially and drives current through the load. The current increases in the load, which is sensed by the internal current-sense circuit. If the load current reaches the current-trip threshold, the H-bridge switches to slow decay mode with the two low-side MOSFETs turned on. After a fixed off-time (tITRIP), if the load current falls at least 20% below the current-limit threshold, the MOSFETs are re-enabled and the cycle repeats. If the current is still higher than this level, the off time is extended until the current falls to 20% below the current limit threshold. The current-limit threshold is reached when VISEN reaches 1.5V. For example, with a 10kΩ resistor from ISET to ground, the VISEN voltage is 1V/A of output current. Therefore, when the current reaches 1.5A, the VISET voltage reaches 1.5V, and a current trip occurs. During current regulation, nFAULT is not activated. Blanking Time There is often a current spike during start-up due to the body diode’s reverse-recovery current or the shunt capacitance of the load. This current spike requires filtering to prevent it from erroneously shutting down the high-side MOSFET. An internal fixed blanking time (tOCPD) blanks the output of the current-sense comparator when the outputs are switched. This blanking time also sets the minimum on time for the high-side MOSFET. Input Logic For the MP6522, control of the outputs is accomplished through IN1 and IN2 (see Table 1). Table 1: Output Control Pins IN1 0 0 1 1 IN2 0 1 0 1 OUT1 Z L H L OUT2 Z H L L Function Coast Forward Reverse Brake (low) nSLEEP Operation Driving nSLEEP low puts the device into a lowpower sleep state. In this state, all internal circuits including the gate drive charge pump are disabled, and the H-bridge outputs are turned off. All inputs are ignored when nSLEEP is active low. When waking up from sleep mode, approximately 1ms of time must pass before the outputs can operate. Fault The MP6522 provides an nFAULT pin, which is driven active low if any protection circuits (overcurrent, over-voltage, over-temperature) are activated. nFAULT is not driven low when a current-limit trip occurs. nFAULT is an opendrain output and requires an external pull-up resistor. When the fault condition is removed, nFAULT is pulled inactive high by the pull-up resistor. 1.0MP6522 Rev. 1.02 www.MonolithicPower.com 3/21/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 9 MP6522 – 35V, 3.2A, H-BRIDGE MOTOR DRIVER Over-Current Protection (OCP) The over-current protection (OCP) circuit protects the device from damaging high currents at the outputs. If the current through a MOSFET exceeds the over-current threshold for longer than the over-current deglitch time, all MOSFETs in the H-bridge are disabled, and nFAULT is driven low. The driver remains disabled for the over-current retry time (tOCP), at which point the driver is re-enabled automatically. Over-current conditions are sensed on both high- and low-side devices (i.e.: a short to ground, supply, or across the motor winding results in an over-current shutdown. Note that OCP does not use the current-sense circuitry used for PWM current control and is independent of the ISET resistor value. Input Under-Voltage Lockout (UVLO) Protection If at any time the voltage on VIN falls below the under-voltage lockout (UVLO) threshold, all circuitry in the device is disabled, and the internal logic is reset. Operation resumes when VIN rises above the UVLO threshold. Thermal Shutdown If the die temperature exceeds the safe limits, all MOSFETs in the H-bridge are disabled, and nFAULT is driven low. Once the die temperature has fallen to a safe level, operation resumes automatically. Over-Voltage Protection (OVP) If the input voltage applied to VIN is higher than the over-voltage protection (OVP) threshold, the H-bridge output is disabled, and nFAULT is driven low. This protection is released when VIN drops to a safe level. 1.0MP6522 Rev. 1.02 www.MonolithicPower.com 3/21/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 10 MP6522 – 35V, 3.2A, H-BRIDGE MOTOR DRIVER PACKAGE INFORMATION QFN-24 (5mmx5mm) 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. MP6522 Rev. 1.02 3/21/2019 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 11