SGM42507 DC Motor/Coil Driver

Transcription

1 ADVANCED DATASHEET SGM4507 GENERAL DESCRIPTION SGM4507 is a bridge-tie driver designed for actuating motors and coils bi-directionally. It translates logic level input waves to power driving outputs to motors or coils, for different spinning or moving directions. Internal over-current (OC) and under-voltage protection (UV) circuits, together with over-temperature (OT) circuit prevent the circuit from over stress condition, while an alert output report simplifies stalling sensing, which is useful feature to most kinds of applications. The SGM4507 is available in Green SC70-6 and TSOT--6 packages. It operates over an ambient temperature range of -40 to +85. APPLICATIONS Utility Meters, Robots, Solenoid FEATURES Compact Size and Smart Protection Reliable Signaling to High EM Interference Rotator Stalling and Magnetic Force Holding Support Fast Decay and Slow Decay Model Internal Stalling Sense Internal OC/UV/OT Protections Over-Current Threshold Options: 0.75A/1.5A Under-Voltage Protect Threshold Options: 1.7V/.8V/.6V 7.5V SGM4507 for Circuit Powered by: 1 Li+/Poly Cell //4 Dry Cells 1/ LiSOCl Cell(s) -40 to +85 Operating Temperature Range Available in Green SC70-6 and TSOT--6 Packages TYPICAL APPLICATION 4.7μF IO/MCU enabling or alerting (active low) or Connect to 1.8 ~ 5.5V through 500Ω resistor IO/MCU EOA GND SGM4507 AB M FEBRUARY 8, 017

2 SGM4507 PACKAGE/ORDERING INFORMATION MODEL PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE ORDERING NUMBER PACKAGE MARKING PACKING OPTION SGM4507 SC to +85 SGM4507YC6G/TR GPBXX Tape and Reel, 000 TSOT to +85 SGM4507YTN6G/TR GM5XX Tape and Reel, 000 NOTE: XX = Date Code. MARKING INFORMATION Green (RoHS & HSF): defines "Green" to mean Pb-Free (RoHS compatible) and free of halogen substances. If you have additional comments or questions, please contact your SGMICRO representative directly. GYY X X Date code - Month ("A" = Jan. "B" = Feb. "L" = Dec.) Date code - Year ("A" = 010, "B" = 011 ) Chip I.D. For example: GPBFA (015, January) ABSOLUTE MAXIMUM RATINGS V CC V to 7.7V Digital Input Pin Voltage Range V to 6V Package Thermal Resistance SC70-6, θ JA /W TSOT--6, θ JA /W Junction Temperature Storage Temperature Range to +150 Lead Temperature (Soldering, 10s) RECOMMENDED OPERATING CONDITIONS V CC V to 7.5V Digital Input Pin Voltage Range V to 5.5V Operating Temperature Range to +85 OVERSTRESS CAUTION Stresses beyond those listed may cause permanent damage to the device. Functional operation of the device at these or any other conditions beyond those indicated in the operational section of the specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. ESD SENSITIVITY CAUTION This integrated circuit can be damaged by ESD if you don t pay attention to ESD protection. SGMICRO recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. DISCLAIMER reserves the right to make any change in circuit design, specification or other related things if necessary without notice at any time. FEBRUARY 017

3 SGM4507 PIN CONFIGURATIONS TOP VIEW TOP VIEW EOA GND 5 5 GND AB 4 EOA 4 AB TSOT--6 SC70-6 PIN DESCRIPTION PIN TSOT--6 SC EOA I/O NAME TYPE FUNCTION 5 GND G Ground. 4 AB I 4 6 O Output B of Bridge-Tie Driving Stage. Enable Input or Alert Output (V EOA V CC). Input logic high to enable directional driving, logic low to enter low power dissipation mode and reset all internal logic. Internal pull-down. Direction Input (V AB V CC). Logic Low for sourcing from and sinking into, logic High for reversely driving. Internal pull-down. 5 P Power Input. A 4.7μF (MIN) ceramic bypass capacitor to GND is recommended. 6 1 O Output A of Bridge-Tie Driving Stage. NOTE: I: Input, O: Output, I/O: Input or Output, G: Ground, P: Power for the circuit. FUNCTIONAL BLOCK DIAGRAM GND EOA UVLO, Bias Generation & Protection (UV/OC/OT) + AB Bridge-Tie Gating Logic Anti- Shooting Through Anti-Shooting Through SGM4507 GND Figure 1. Block Diagram FEBRUARY 017

4 SGM4507 ELECTRICAL CHARACTERISTICS ( = 5V, EOA connect to 5V through 500Ω resistor, TA = +5, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS POWER SUPPLIES Power Supply Voltage V CC V Digital Input Voltage Range (EOA, AB) V IN V Sleep Mode Supply Current I Q V CC = 5V, EOA = GND, AB = GND 1. μa Under-Voltage Lockout Voltage V UVLO 1.7 V Under-Voltage Lockout Voltage Hysteresis V HYS 100 mv Under-Voltage Protect Voltage V UVP 1.75 V Under-Voltage Protect Voltage Hysteresis V HYS 100 mv LOGIC LEVEL INPUTS Input Low Voltage V IL 0.4 V Input High Voltage V IH 1.7 V Input Low Current I IL 1.0 μa Input High Weak Pull-down Current I IH_weak Self-Holding Low Inputs 60 ua Input High Strong Pull-down Current I IH_strong Self-Holding Low Inputs 1.0 ma Input Deglitch Time t DEG 00 ns nfault OUTPUT (OPEN-DRAIN OUTPUT EOA) Output High-Impedance Leakage Current I OH 1.0 μa H-BRIDGE FETS HS FET On-Resistance R DS(ON) V CC = 5V, I O = 00mA 410 mω LS FET On-Resistance R DS(ON) V CC = 5V, I O = -00mA 5 mω Off-State Leakage Current I OFF V OUT = 0V 1.0 μa MOTOR DRIVER Rise Time t R R L = 16Ω to GND, 10% to 90% V CC 15 ns Fall Time t F R L = 16Ω to V CC, 90% to 10% V CC 155 ns Propagation Delay INx to OUTx t PROP 1.0 μs Dead Time (1) t DEAD 55 ns PROTECTION CIRCUITS Over Current Protection Trip Level I OCP 1.0 A OCP_H Deglitch Time t DEG_H 00 μs OCP_L Deglitch Time t DEG_L 00 μs SLEEP MODE Enter Sleep Mode Time t SLEEP.0 ms Startup Time t WAKE EOA Inactive High to H-bridge on 4.0 ms NOTE: 1. Internal dead time. External implementation is not necessary. FEBRUARY 017 4

5 SGM4507 DETAILED DESCRIPTION H-Bridge Control and Decay Modes The device has two push-pull stages that drive a bridge-tied load between those stages. When the stages are enabled, input AB selects driving direction into the load, when AB = 0, is H and is L, or reversely when AB = 1. EOA is a dual function bi-direction input or output. When EOA is driven by the host externally, If using the EOA alerting stalling or other protections, the host output driving capability needs to be verified, to assure EOA sinking capability (V CC V, I pull_eoa = 0mA) could force it down to low. Or EOA could connect to 1.8V ~ 5.5V through 500Ω resistor. EOA as output port: When any of over-current protection, under-voltage protection or over-temperature protection occurs, the device sinks current into EOA, pulls the external driving down to alert the host a protection in action. The device could read EOA input Low, only after it is released from a protection action. EOA as input port : EOA = 1 enables driving load in the direction set by AB input. As shown in the Table 1 (a, b). EOA = 0, and the duration of EOA = 0 is shorter than ms, then the H-bridge will enter Slow Decay mode, output stages will tie both and to ground. As shown in the Table 1 (c). The duration of EOA = 0 is greater than ms, the device will enter low power dissipation mode. In low power dissipation mode, after EOA logic becomes 0, if the AB logic remain unchanged, then the H-bridge will enter Slow Decay mode, output stages will tie both and to ground. As shown in the Table 1 (d). In low power dissipation mode, after EOA logic becomes 0, if the AB logic changes, then the H-bridge will enter Fast Decay mode, output stages will tie both and to high-impedance state. As shown in the Table 1 (e, f). So, in the low power dissipation mode, user can choose the output state, which could be Fast Decay or Slow Decay mode. Table 1. H-Bridge Logic STATE EOA AB FUNCTION a 1 0 H L Forward b 1 1 L H Reverse c 0 X L L Brake/Slow Decay d 0 X L L Brake/Slow Decay e Z Z Coast/Fast Decay f Z Z Coast/Fast Decay 1 1 Forward drive Fast decay Slow decay 1 1 Reverse drive Fast decay Slow decay FORWARD Figure. Decay Modes REVERSE FEBRUARY 017 5

6 SGM4507 DETAILED DESCRIPTION (continued) PWM Motor Drivers Loading PWM signal to AB port, the output stages can realize complementary full scale PWM-Output. Loading PWM signal to EOA port, the output stages can realize single half scale PWM-Output, in the direction set by AB. Table. PWM Control of Motor Speed AB EOA FUNCTION PWM 1 Forward PWM, Reverse PWM 1 PWM Reverse PWM, Slow Decay 0 PWM Forward PWM, Slow Decay NOTE: The PWM signal frequency of EOA must be higher than 1kHz, otherwise the device may enter the low power dissipation mode. Rotator Stalling and Magnetic Force Holding When spinning starts or rotator stalls, driving current may go high sharply. The over current protection is designed to alert the starting or stalling situation while provide necessary protection. The device ties both and to ground when the current goes high over the protection threshold for over a blanking time, restores driving when the driving current falls below the threshold plus given hysteresis, while asserts an alert by pulling EOA low during the protection action. The average driving current is kept higher over the threshold current, so the torque or magnetic force is maintained in stalling or starting. Under-Voltage and Over-Temperature Protections In any situations, including starting, stalling or function abnormal, if input voltage is drown to lower than under voltage threshold or die temperature goes high than the over temperature threshold, the device stops driving and ties both and to ground, to prevent the power system from collapse and the die from thermal over stress. Self-Holding Low Inputs Both AB and EOA have a continuous weak pull-down and an intelligent strong pull-down. The strong pull-down is active when input low is recognized and inactive when input high is recognized. This assures a known and stable status of input even an input is floating, while keeps low sinking when input high. FEBRUARY 017 6

7 PACKAGE INFORMATION PACKAGE OUTLINE DIMENSIONS TSOT--6 D e E1 E b RECOMMENDED LAND PATTERN (Unit: mm) L A A1 A θ 0.5 c Symbol Dimensions In Millimeters Dimensions In Inches MIN MAX MIN MAX A A A b c D E E e BSC 0.07 BSC L θ TX

8 PACKAGE INFORMATION PACKAGE OUTLINE DIMENSIONS SC70-6 D e e E1 E b RECOMMENDED LAND PATTERN (Unit: mm) L L1 A A1 A θ 0.0 c Symbol Dimensions In Millimeters Dimensions In Inches MIN MAX MIN MAX A A A b c D E E e 0.65 TYP 0.06 TYP e BSC BSC L 0.55 REF 0.01 REF L θ TX

9 PACKAGE INFORMATION TAPE AND REEL INFORMATION REEL DIMENSIONS TAPE DIMENSIONS P P0 W Q1 Q Q1 Q Q1 Q B0 Q Q4 Q Q4 Q Q4 Reel Diameter P1 A0 K0 Reel Width (W1) DIRECTION OF FEED NOTE: The picture is only for reference. Please make the object as the standard. KEY PARAMETER LIST OF TAPE AND REEL Package Type Reel Diameter Reel Width W1 A0 B0 K0 P0 P1 P W Pin1 Quadrant TSOT Q SC Q DD0001 TX

10 PACKAGE INFORMATION CARTON BOX DIMENSIONS NOTE: The picture is only for reference. Please make the object as the standard. KEY PARAMETER LIST OF CARTON BOX Reel Type Length Width Height Pizza/Carton 7 (Option) DD000 TX