Order this document by MC33030/D The MC33030 is a monolithic DC servo motor controller providing all active functions necessary for a complete closed loop system. This device consists of an on–chip op amp and window comparator with wide input common–mode range, drive and brake logic with direction memory, Power H–Switch driver capable of 1.0 A, independently programmable over–current monitor and shutdown delay, and over–voltage monitor. This part is ideally suited for almost any servo positioning application that requires sensing of temperature, pressure, light, magnetic flux, or any other means that can be converted to a voltage. Although this device is primarily intended for servo applications, it can be used as a switchmode motor controller. • On–Chip Error Amp for Feedback Monitoring • • • • • • DC SERVO MOTOR CONTROLLER/DRIVER SEMICONDUCTOR TECHNICAL DATA 16 1 Window Detector with Deadband and Self Centering Reference Input P SUFFIX PLASTIC PACKAGE CASE 648C (DIP–16) Drive/Brake Logic with Direction Memory 1.0 A Power H–Switch Programmable Over–Current Detector Programmable Over–Current Shutdown Delay Over–Voltage Shutdown 16 1 DW SUFFIX PLASTIC PACKAGE CASE 751G (SOP–16L) Representative Block Diagram Motor VCC VCC 11 9 Feedback Position 8 + 7 Over– Voltage Monitor + + – 3 Window Detector + PIN CONNECTIONS Reference Input Reference Input Filter Error Amp Output Filter/Feedback Input – 6 VCC 14 10 Error Amp Power H–Switch 16 2 3 4 13 5 12 6 11 VCC 7 10 8 9 Gnd Drive/ Brake Logic Programmable Over– Current Detector & Latch + – Over–Current Delay 15 Over–Current Reference Driver 14 Output A 1 Direction Memory Reference Position 1 Gnd Error Amp Output Error Amp Inverting Input Error Amp Non– Inverting Input Driver Output B Error Amp Input Filter (Top View) Pins 4, 5, 12 and 13 are electrical ground and heat sink pins for IC. 2 ORDERING INFORMATION 16 4, 5, 12, 13 CDLY 15 ROC Device MC33030DW This device contains 119 active transistors. MC33030P Operating Temperature Range TA = – 40° to +85°C Motorola, Inc. 1996 MOTOROLA ANALOG IC DEVICE DATA Package SOP–16L DIP–16 Rev 2 1 MC33030 MAXIMUM RATINGS Rating Symbol Value Unit Power Supply Voltage VCC 36 V Input p Voltage g Range g O A Op Amp, C Comparator, t C Currentt Li Limit it (Pi 1, 1 2, 2 3, 3 6, 6 7, 7 8, 8 9, 9 15) (Pins VIR – 0.3 to VCC V VIDR – 0.3 to VCC V IDLY(sink) Isource 20 mA 10 mA VDRV IDRV(source) IDRV(sink) – 0.3 to (VCC + VF) V 1.0 A 1.0 A IF 1.0 Input Differential Voltage Range Op Amp Amp, Comparator (Pins 1 1, 2 2, 3 3, 6 6, 7 7, 8 8, 9) Delay Pin Sink Current (Pin 16) Output Source Current (Op Amp) Drive Output Voltage Range (Note 1) Drive Output Source Current (Note 2) Drive Output Sink Current (Note 2) Brake Diode Forward Current (Note 2) Power Dissipation and Thermal Characteristics P Suffix, 648C Su , Dual ua In Line e Case 6 8C Thermal Resistance, Junction–to–Air Thermal Resistance Resistance, Junction–to–Case (Pins 4, 5, 12, 13) DW Suffix, Dual In Line Case 751G Resistance Junction–to–Air Junction to Air Thermal Resistance, Thermal Resistance, Junction–to–Case Junction to Case (Pins 4, 5, 12, 13) Operating Junction Temperature Operating Ambient Temperature Range Storage Temperature Range A °C/W RθJA RθJC 80 15 RθJA RθJC 94 18 TJ TA +150 °C – 40 to + 85 °C Tstg – 65 to +150 °C NOTES: 1. The upper voltage level is clamped by the forward drop, VF, of the brake diode. 2. These values are for continuous DC current. Maximum package power dissipation limits must be observed. ELECTRICAL CHARACTERISTICS (VCC = 14 V, TA = 25°C, unless otherwise noted.) Characteristic Symbol Min Typ Max Unit Input Offset Voltage (– 40°C VPin 6 = 7 7.0 0V V, RL = 100 k VIO – 1.5 10 mV Input Offset Current (VPin 6 = 1.0 V, RL = 100 k) IIO IIB – 0.7 – nA – 7.0 – nA VICR – 0 to (VCC – 1.2) – V Slew Rate, Open Loop (VID = 0.5 V, CL = 15 pF) SR – 0.40 – V/µs Unity–Gain Crossover Frequency fc φm – 550 – kHz – 63 – deg. Common–Mode Rejection Ratio (VPin 6 = 7.0 V, RL = 100 k) CMRR 50 82 – dB Power Supply Rejection Ratio VCC = 9 9.0 0 to 16 V V, VPin 6 = 7 7.0 0V V, RL = 100 k PSRR – 89 – dB IO + IO – – 1.8 – mA – 250 – µA VOH VOL 12.5 – 13.1 0.02 – – V V ERROR AMP p TA p 85°C) Input Bias Current (VPin 6 = 7.0 V, RL = 100 k) Input Common–Mode Voltage Range ∆VIO = 20 mV mV, RL = 100 k Unity–Gain Phase Margin Output Source Current (VPin 6 = 12 V) Output Sink Current (VPin 6 = 1.0 V) Output Voltage Swing (RL = 17 k to Ground) NOTES: 3. The upper or lower hysteresis will be lost when operating the Input, Pin 3, close to the respective rail. Refer to Figure 4. 4. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible. 2 MOTOROLA ANALOG IC DEVICE DATA MC33030 ELECTRICAL CHARACTERISTICS (continued) (VCC = 14 V, TA = 25°C, unless otherwise noted.) Characteristic Symbol Min Typ Max Unit VH 25 35 45 mV Input Dead Zone Range (V2 – V4, Figure 18) VIDZ 166 210 254 mV Input Offset Voltage ( [V2 – VPin 2] – [VPin 2 – V4] Figure 18) VIO – 25 – mV Input p Functional Common–Mode Range g (Note ( 3)) U Upper Th Threshold h ld L Lower Threshold Th h ld VIH VIL – – (VCC – 1.05) 1 05) 0 24 0.24 – – VRSC – (1/2 VCC) – V tp(IN/DRV) – 2.0 – µs µ ROC 3.9 4.3 4.7 V IDLY(source) ( ) – 5.5 6.9 µA – – – 0.1 0 1 07 0.7 16 5 16.5 – – – – 0.3 0.4 6.8 6 8 55 5.5 7.5 7 5 60 6.0 8.2 8 2 65 6.5 tp(DLY/DRV) – 1.8 – VOH(DRV) ( ) VOL(DRV) (VCC – 2) – (VCC – 0.85) 0 85) 0 12 0.12 – 10 1.0 tr tf – – 200 200 – – VF – 1.04 2.5 V WINDOW DETECTOR Input Hysteresis Voltage (V1 – V4, V2 – V3, Figure 18) Reference Input Self Centering Voltage Pins 1 and 2 Open Window Detector Propagation p g Delayy C Comparator t Input, I t Pin Pi 3 3, tto D Drive i O Outputs t t 5V VID = 0 0.5 V, RL(DRV) = 390 Ω V OVER–CURRENT MONITOR Over–Current Reference Resistor Voltage (Pin 15) Delay Pin Source Current V ROC = 27 kk, IDRV = 0 mA VDLY = 0 V, Delayy Pin Sink Current (R ( OC = 27 k, IDRV = 0 mA)) VDLY = 5.0 50V VDLY = 8.3 83V VDLY = 14 V IDLY(sink) Delay Pin Voltage, Low State (IDLY = 0 mA) VOL(DLY) Over–Current Shutdown Threshold VCC = 14 V VCC = 8.0 80V Over–Current Shutdown Propagation Delay Delay Capacitor Input, Pin 16, to Drive Outputs, VID = 0.5 V POWER H–SWITCH p p+ 85°C, Note 4)) Drive–Output p Saturation ((– 40°C TA Hi h St t High–State (Isource = 100 mA) A) L Low–State St t (Isink = 100 mA) A) Drive–Output p Voltage g Switching g Time (C ( L = 15 p pF)) Ri Time Rise Ti F ll Time Fall Ti Brake Diode Forward Voltage Drop (IF = 200 mA, Note 4) mA Vth(OC) V V µs V ns TOTAL DEVICE Standby Supply Current ICC – 14 25 mA Over–Voltage Shutdown Threshold ( 40°C (– TA + 85°C) Vth(OV) ( ) 16.5 18 20.5 V Over–Voltage Shutdown Hysteresis (Device “off” to “on”) VH(OV) 0.3 0.6 1.0 V VCC – 7.5 8.0 V p p Operating Voltage Lower Threshold ( 40°C (– TA + 85°C) p p NOTES: 3. The upper or lower hysteresis will be lost when operating the Input, Pin 3, close to the respective rail. Refer to Figure 4. 4. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible. MOTOROLA ANALOG IC DEVICE DATA 3 MC33030 0 ∆VIO = 20 mV RL = 100 k Figure 2. Error Amp Output Saturation versus Load Current Vsat , OUTPUT SATURATION VOLTAGE (V) VICR , INPUT COMMON–MODE RANGE (mV) Figure 1. Error Amp Input Common–Mode Voltage Range versus Temperature VCC VCC – 1.0 – 400 – 2.0 – 800 800 400 0 – 55 0 Gnd – 25 25 0 50 75 TA, AMBIENT TEMPERATURE (°C) 125 100 1.0 Gnd 0 30 45 Gain Phase 90 40 Phase Margin = 63° 135 180 1.0 M VICR , INPUT COMMON–MODE RANGE (V) AVOL, OPEN–LOOP VOLTAGE GAIN (dB) 60 φ , EXCESS PHASE (DEGREES) 0 100 k 0 – 0.5 Vsat, OUTPUT SATURATION VOLTAGE (V) VFB , FEEDBACK–INPUT VOLTAGE (V) V2 V3 7.05 VCC = 14 V Pin 2 = 7.00 V 7.00 6.95 V1 Lower Hysteresis 6.90 6.85 – 55 4 – 25 V4 0 25 50 75 TA, AMBIENT TEMPERATURE (°C) 100 3.0 k Max. Pin 2 VICR so that Pin 3 can change state of drive outputs. VCC – 1.5 0.3 0.2 0.1 0 – 55 Gnd – 25 0 25 50 75 TA, AMBIENT TEMPERATURE (°C) 100 125 Figure 6. Output Driver Saturation versus Load Current 7.15 Upper Hysteresis 300 1.0 k IL, LOAD CURRENT (± µA) – 1.0 Figure 5. Window Detector Feedback–Input Thresholds versus Temperature 7.10 100 Figure 4. Window Detector Reference–Input Common–Mode Voltage Range versus Temperature 80 100 1.0 k 10 k f, FREQUENCY (Hz) Sink Saturation RL to VCC TA = 25°C 2.0 Figure 3. Open Loop Voltage Gain and Phase versus Frequency VCC = 14 20 Vout = 7.0 V RL = 100 k CL = 40 pF T = 25°C 0 A 1.0 10 Source Saturation RL to Gnd TA = 25°C 125 0 VCC Source Saturation RL to Gnd TA = 25°C – 1.0 1.0 0 0 Sink Saturation RL = VCC TA = 25°C 200 Gnd 400 600 IL, LOAD CURRENT (± mA) 800 MOTOROLA ANALOG IC DEVICE DATA MC33030 Figure 8. Output Source Current–Limit versus Over–Current Reference Resistance Figure 7. Brake Diode Forward Current versus Forward Voltage IF , FORWARD CURRENT (mA) TA = 25°C 400 300 200 100 0.7 0.9 1.1 600 400 200 0 0 1.5 1.3 20 40 60 100 80 VF, FORWARD VOLTAGE (V) ROC, OVER–CURRENT REFERENCE RESISTANCE (kΩ) Figure 9. Output Source Current–Limit versus Temperature Figure 10. Normalized Delay Pin Source Current versus Temperature 1.04 600 I source, OUTPUT SOURCE CURRENT (mA) VCC = 14 V TA = 25°C IDLY(source) , DELAY PIN SOURCE CURRENT (NORMALIZED) 0 0.5 800 Isource , OUTPUT SOURCE CURRENT (mA) 500 VCC = 14 V ROC = 15 k 1.00 400 ROC = 27 k 0.96 200 0.92 ROC = 68 k Vth(OC), OVER–CURRENT DELAY THRESHOLD VOLTAGE (NORMALIZED) 0 – 55 – 25 25 0 50 75 TA, AMBIENT TEMPERATURE (°C) 100 0.88 – 55 125 Figure 11. Normalized Over–Current Delay Threshold Voltage versus Temperature – 25 25 50 75 0 TA, AMBIENT TEMPERATURE (°C) 100 125 Figure 12. Supply Current versus Supply Voltage 28 CC, SUPPLY CURRENT (mA) 1.04 1.02 1.00 0.98 0.96 – 55 VCC = 14 V I VCC = 14 V Pins 6 to 7 Pins 2 to 8 TA = 25°C 24 20 16 12 8.0 Minimum Operating Voltage Range 4.0 0 – 25 0 25 50 75 TA, AMBIENT TEMPERATURE (°C) MOTOROLA ANALOG IC DEVICE DATA 100 125 0 8.0 16 Over– Voltage Shutdown Range 24 32 40 VCC, SUPPLY VOLTAGE (V) 5 Figure 13. Normalized Over–Voltage Shutdown Threshold versus Temperature V th(OV) , OVER–VOLTAGE SHUTDOWN THRESHOLD (NORMALIZED) V th(OV) , OVER–VOLTAGE SHUTDOWN THRESHOLD (NORMALIZED) MC33030 1.02 1.00 0.98 0.96 – 55 – 25 0 25 50 75 TA, AMBIENT TEMPERATURE (°C) 100 125 Figure 14. Normalized Over–Voltage Shutdown Hysteresis versus Temperature 1.4 1.2 1.0 0.8 0.6 0.4 – 55 – 25 0 25 50 75 100 TA, AMBIENT TEMPERATURE (°C) 125 JUNCTION–TO–AIR (° C/W) R θ JA, THERMAL RESISTANCE 100 ÎÎÎ ÎÎÎ ÎÎÎ ÎÎÎ Printed circuit board heatsink example 80 L RθJA 60 2.0 oz Copper L 3.0 mm Graphs represent symmetrical layout 40 4.0 3.0 2.0 PD(max) for TA = 70°C 20 0 5.0 0 10 1.0 20 30 L, LENGTH OF COPPER (mm) 0 50 40 P D , MAXIMUM POWER DISSIPATION (W) Figure 15. P Suffix (DIP–16) Thermal Resistance and Maximum Power Dissipation versus P.C.B. Copper Length JUNCTION–TO–AIR (° C/W) R θ JA, THERMAL RESISTANCE 100 2.8 PD(max) for TA = 50°C 90 2.4 ÎÎÎ ÎÎÎ ÎÎÎ ÎÎÎ ÎÎÎ ÎÎÎ ÎÎÎ 80 Graph represents symmetrical layout 70 L 60 2.0 oz. Copper L 50 RθJA 40 3.0 mm 10 1.6 1.2 0.8 0.4 30 0 2.0 20 30 40 PD, MAXIMUM POWER DISSIPATION (W) Figure 16. DW Suffix (SOP–16L) Thermal Resistance and Maximum Power Dissipation versus P.C.B. Copper Length 0 50 L, LENGTH OF COPPER (mm) 6 MOTOROLA ANALOG IC DEVICE DATA MC33030 OPERATING DESCRIPTION The MC33030 was designed to drive fractional horsepower DC motors and sense actuator position by voltage feedback. A typical servo application and representative internal block diagram are shown in Figure 17. The system operates by setting a voltage on the reference input of the Window Dectector (Pin 1) which appears on (Pin 2). A DC motor then drives a position sensor, usually a potentiometer driven by a gear box, in a corrective fashion so that a voltage proportional to position is present at Pin 3. The servo motor will continue to run until the voltage at Pin 3 falls within the dead zone, which is centered about the reference voltage. The Window Detector is composed of two comparators, A and B, each containing hysteresis. The reference input, common to both comparators, is pre–biased at 1/2 VCC for simple two position servo systems and can easily be overriden by an external voltage divider. The feedback voltage present at Pin 3 is connected to the center of two resistors that are driven by an equal magnitude current source and sink. This generates an offset voltage at the input of each comparator which is centered about Pin 3 that can float virtually from VCC to ground. The sum of the upper and lower offset voltages is defined as the window detector input dead zone range. To increase system flexibility, an on–chip Error Amp is provided. It can be used to buffer and/or gain–up the actuator position voltage which has the effect of narrowing the dead zone range. A PNP differential input stage is provided so that the input common–mode voltage range will include ground. The main design goal of the error amp output stage was to be able to drive the window detector input. It typically can source 1.8 mA and sink 250 µA. Special design considerations must be made if it is to be used for other applications. The Power H–Switch provides a direct means for motor drive and braking with a maximum source, sink, and brake current of 1.0 A continuous. Maximum package power dissipation limits must be observed. Refer to Figure 15 for thermal information. For greater drive current requirements, a method for buffering that maintains all the system features is shown in Figure 30. The Over–Current Monitor is designed to distinguish between motor start–up or locked rotor conditions that can occur when the actuator has reached its travel limit. A fraction of the Power H–Switch source current is internally fed into one of the two inverting inputs of the current comparator, while the non–inverting input is driven by a programmable current reference. This reference level is controlled by the resistance value selected for ROC, and must be greater than the required motor run–current with its mechanical load over temperature; refer to Figure 8. During an over–current condition, the comparator will turn off and allow the current source to charge the delay capacitor, CDLY. When CDLY charges to a level of 7.5 V, the set input of the over–current latch will go high, disabling the drive and brake functions of the Power H–Switch. The programmable time delay is determined by the capacitance value–selected for CDLY. t DLY DLY + 1.36 C + I Vref CDLY + 7.55.5CµA DLY in µF DLY(source) rotor is locked, the system will time–out and shut–down. This feature eliminates the need for servo end–of–travel or limit switches. Care must be taken so as not to select too large of a capacitance value for CDLY. An over–current condition for an excessively long time–out period can cause the integrated circuit to overheat and eventually fail. Again, the maximum package power dissipation limits must be observed. The over–current latch is reset upon power–up or by readjusting VPin 2 as to cause VPin 3 to enter or pass through the dead zone. This can be achieved by requesting the motor to reverse direction. An Over–Voltage Monitor circuit provides protection for the integrated circuit and motor by disabling the Power H–Switch functions if VCC should exceed 18 V. Resumption of normal operation will commence when VCC falls below 17.4 V. A timing diagram that depicts the operation of the Drive/Brake Logic section is shown in Figure 18. The waveforms grouped in [1] show a reference voltage that was preset, appearing on Pin 2, which corresponds to the desired actuator position. The true actuator position is represented by the voltage on Pin 3. The points V1 through V4 represent the input voltage thresholds of comparators A and B that cause a change in their respective output state. They are defined as follows: V1 = Comparator B turn–off threshold V2 = Comparator A turn–on threshold V3 = Comparator A turn–off threshold V4 = Comparator B turn–on threshold V1–V4 = Comparator B input hysteresis voltage V2–V3 = Comparator A input hysteresis voltage V2–V4 = Window detector input dead zone range |(V2–VPin2) – (VPin2 – V4)| = Window detector input voltage It must be remembered that points V1 through V4 always try to follow and center about the reference voltage setting if it is within the input common–mode voltage range of Pin 3; Figures 4 and 5. Initially consider that the feedback input voltage level is somewhere on the dashed line between V2 and V4 in [1]. This is within the dead zone range as defined above and the motor will be off. Now if the reference voltage is raised so that VPin 3 is less than V4, comparator B will turn–on [3] enabling Q Drive, causing Drive Output A to sink and B to source motor current [8]. The actuator will move in Direction B until VPin 3 becomes greater than V1. Comparator B will turn–off, activating the brake enable [4] and Q Brake [6] causing Drive Output A to go high and B to go into a high impedance state. The inertia of the mechanical system will drive the motor as a generator creating a positive voltage on Pin 10 with respect to Pin 14. The servo system can be stopped quickly, so as not to over–shoot through the dead zone range, by braking. This is accomplished by shorting the motor/generator terminals together. Brake current will flow into the diode at Drive Output B, through the internal VCC rail, and out the emitter of the sourcing transistor at Drive Output A. The end of the solid line and beginning of the dashed for VPin 3 [1] indicates the possible resting position of the actuator after braking. This system allows the Power H–Switch to supply motor start–up current for a predetermined amount of time. If the MOTOROLA ANALOG IC DEVICE DATA 7 MC33030 Figure 17. Representative Block Diagram and Typical Servo Application VCC Motor Gearbox and Linkage VCC Non– Inverting Input Drive Output B Input Filter 9 10 11 Drive Output A 14 + 8 20 k Error Amp Inverting Input 7 20 k Output 6 Over–Voltage Monitor 18 V Ref. 0.3 mA Drive Brake Logic + 20 k 35 µA Q Drive B Q Brake R Error Amp Output Filter/ Feedback Input 3.0 k 3 3.0 k Direction Latch A Brake Enable + Reference Input 1 100 k 20 k Q Over– Current Latch 100 k 2 Reference Input Filter R 5.5 µA Q 50 k S + 7.5 V Ref. Window Detector 4, 5,12,13 Gnd If VPin 3 should continue to rise and become greater than V2, the actuator will have over shot the dead zone range and cause the motor to run in Direction A until VPin 3 is equal to V3. The Drive/Brake behavior for Direction A is identical to that of B. Overshooting the dead zone range in both directions can cause the servo system to continuously hunt or oscillate. Notice that the last motor run–direction is stored in the direction latch. This information is needed to determine whether Q or Q Brake is to be enabled when VPin 3 enters the dead zone range. The dashed lines in [8,9] indicate the resulting waveforms of an over–current condition that has exceeded the programmed time delay. Notice that both Drive Outputs go into a high impedance state until VPin 2 is readjusted so that VPin 3 enters or crosses through the dead zone [7, 4]. The inputs of the Error Amp and Window Detector can be susceptible to the noise created by the brushes of the DC motor and cause the servo to hunt. Therefore, each of these inputs are provided with an internal series resistor and are pinned out for an external bypass capacitor. It has been found that placing a capacitor with short leads directly across the brushes will significantly reduce noise problems. Good quality RF bypass capacitors in the range of 0.001 to 0.1 µF may be required. Many of the more economical motors will generate significant levels of RF energy over a spectrum that extends from DC to beyond 200 MHz. The capacitance value and method of noise filtering must be determined on a system by system basis. 8 Power H–Switch Q Brake Q S Q Drive 35 µA VCC Q Over–Current Delay Over–Current Monitor 16 CDLY 15 Over–Current ROC Reference Thus far, the operating description has been limited to servo systems in which the motor mechanically drives a potentiometer for position sensing. Figures 19, 20, 27, and 31 show examples that use light, magnetic flux, temperature, and pressure as a means to drive the feedback element. Figures 21, 22 and 23 are examples of two position, open loop servo systems. In these systems, the motor runs the actuator to each end of its travel limit where the Over–Current Monitor detects a locked rotor condition and shuts down the drive. Figures 32 and 33 show two possible methods of using the MC33030 as a switching motor controller. In each example a fixed reference voltage is applied to Pin 2. This causes Vpin 3 to be less than V4 and Drive Output A, Pin 14, to be in a low state saturating the TIP42 transistor. In Figure 32, the motor drives a tachometer that generates an ac voltage proportional to RPM. This voltage is rectified, filtered, divided down by the speed set potentiometer, and applied to Pin. 8. The motor will accelerate until VPin 3 is equal to V1 at which time Pin 14 will go to a high state and terminate the motor drive. The motor will now coast until VPin 3 is less than V4 where upon drive is then reapplied. The system operation of Figure 31 is identical to that of 32 except the signal at Pin 3 is an amplified average of the motors drive and back EMF voltages. Both systems exhibit excellent control of RPM with variations of VCC; however, Figure 32 has somewhat better torque characteristics at low RPM. MOTOROLA ANALOG IC DEVICE DATA MC33030 Figure 18. Timing Diagram Comparator A Non Inverting Input Threshold Window Detector V2 V3 Reference Input Voltage (Desired Actuator Position) Comparator B Inverting Input Threshold [1] V1 V4 Feedback Input (True Actuator Position) [2] Comparator A Output Comparator B Output [3] [4] Brake Enable Direction Latch Q Output [5] Direction Latch Q Output Drive/Brake Logic Q Brake [6] Q Brake [7] Over–Current Latch Reset Input Source Drive Output A High Z Sink Power H–Switch [8] Source Drive Output B Over–Current Monitor High Z Sink 7.5 V [9] CDLY Direction B Feedback Input less than V1 MOTOROLA ANALOG IC DEVICE DATA Dead Zone Feedback Input between V1 & V2 Direction A Feedback Input greater than V2 Dead Zone Feedback Input between V3 & V4 Direction B Feedback Input less than V4 9 MC33030 Figure 19. Solar Tracking Servo System Zero Flux Centering 20 k R1, R2 – Cadium Sulphide Photocell R1, R2 – 5M Dark, 3.0 k light resistance VCC ≈15° Offset Figure 20. Magnetic Sensing Servo System R3 – 30 k, repositions servo during R3 – darkness for next sunrise. R1 9 R2 7 Servo Driven Wheel Linear Hall Effect Sensor Error Amp + 8 20 k R3 – 20 k VCC 9 VCC 3.9 k TL173C Error Amp 8 20 k 7 20 k 10 k 6 B 6 Gain VCC 1 Centering Adjust Typical sensitivity with gain set at 3.9 k is 1.5 mV/gauss. Servo motor controls magnetic field about sensor. 10 k Figure 21. Infrared Latched Two Position Servo System Figure 22. Digital Two Position Servo System VCC 470 VCC 9 Input MRD3056 Latch Drive A 1 0 9 39 k MRD3056 Latch Drive B 8 7 Error Amp 20 k 8 7 Error Amp 20 k 20 k 20 k 68 k MPS A20 6 1 – Activates Drive A 0 – Activates Drive B 470 VCC/2 Over–current monitor (not shown) shuts down servo when end stop is reached. 1 Over–current monitor (not shown) shuts down servo when end stop is reached. Figure 23. 0.25 Hz Square–Wave Servo Agitator Figure 24. Second Order Low–Pass Active Filter 9 VCC Vin 9 100 k 8 20 k 7 100 k 20 k 100 k 130 k 22 Error Amp + R C 6 fo [ 0.72 RC R q 20 k f R C1 C2 Ǹ 8 20 k 7 6 1 R 2 C 1C 2 Ǹ 2p Error Amp 20 k R = 1.0 M C1 = 1000 pF C2 = 100 pF C1 Q 10 + R + C2 2 MOTOROLA ANALOG IC DEVICE DATA MC33030 Figure 25. Notch Filter Figure 26. Differential Input Amplifier 9 R Vin R 8 20 k 7 2C 9 + – Error Amp VA 20 k f R4 For 60 Hz R = 53.6 k, C = 0.05 V Figure 27. Temperature Sensing Servo System 9 8 20 k 7 20 k R4 V Pin 6 + + Error Amp – VB R1 ) R4 ) R2 8 R2 R3 R4 – R3 20 k + 7 R2 R R 1 R3 V B 20 k Error Amp – R4 ǒ 6 Ǔ * VB + VRef 4R )DR2DR R 1 + R 3, R 2 + R 4, R 1 uu R + RR4 (VA–VB) V Pin 6 V )1 ǒ Ǔ R2 R VA ǒ Ǔ R1 R1 6 Set Temperature R4 CC R 3 R3 9 R + ∆R VCC V ǒ Ǔ ǒ Ǔ + VA VRef R1 R3 Pin 6 6 Figure 28. Bridge Amplifier VCC R2 20 k R3 VB + 2p1RC notch Cabin Temperature T Sensor Error Amp – R2 C + 7 6 R/2 C 8 20 k R1 )1 A 3 In this application the servo motor drives the heat/air conditioner modulator door in a duct system. Figure 29. Remote Latched Shutdown Q R Figure 30. Power H–Switch Buffer + R O.C. Q E [ VF(D ) 1 ) VF(D2)–VBE(ON) VCC IMOTOR–IDRV(max) S 7.5 V + 16 CDLY 15 ROC 4.7 k RE D1 D2 VCC 17 8 4 2 3 Vin VRef LM311 Motor RE D1 D2 A From Drive Outputs 470 B A direction change signal is required at Pins 2 or 3 to reset the over–current latch. MOTOROLA ANALOG IC DEVICE DATA This circuit maintains the brake and over–current features of the MC33030. Set ROC to 15 k for IDRV(max) ≈ 0.5 A. 11 MC33030 Figure 31. Adjustable Pressure Differential Regulator Gas Flow VCC = 12 V 6.2 k 1.76 k Zero Pressure 2.0 k Offset Adjust 12 k LM324 Quad Op Amp Pressure Port 8.06 k 1.0 k 5.1 k S– 200 5.1 k MPX11DP Silicon Pressure Sensor 200 20 k Gain 1.0 k 4.12 k 2.4 k S+ Vacuum Port 1.0 k 2.0 V for Zero Pressure Differential VCC = 12 V 0.01 6.0 V for 100 kPa (14.5 PSI) Pressure Differential Motor 9 11 10 14 + 8 7 6 + B R Q 3 DIR. S Q A 12 V + Pressure Differential Reference Set 5.1 k 5.0 k + 1 Q R O.C. 1.8 k 0.01 2 Q 4, 5,12,13 S + 16 0.01 12 15 15 k MOTOROLA ANALOG IC DEVICE DATA MC33030 Figure 32. Switching Motor Controller With Buffered Output and Tach Feedback VCC = 12 V 100 + 100 0.24 100 0.002 TACH Speed Set + 10 k 1.0 TIP42 11 9 1N4001 14 10 + 10 + 1.0 k MPS A70 Motor 8 7 MZ2361 6 + R Q 3 DIR. S Q + 12 V Over Current Reset + 1 Q R O.C. Q S 4.7 k 2 + 1N753 4, 5,12,13 16 15 30 k 1.0 k MOTOROLA ANALOG IC DEVICE DATA 13 MC33030 Figure 33. Switching Motor Controller With Buffered Output and Back EMF Sensing VCC = 12 V 100 + Speed Set 1.0 100 TIP42 11 9 10 14 + 8 + 0.24 10 100 1.0 2X–1N4001 10 k 10 k + + 1.0 k MPS A70 Motor 7 10 k 20 k 6 + R Q 3 DIR. S Q + Over Current Reset + 1 + 12 V Q R O.C. Q S 2 + 1N753 4, 5, 12, 13 14 16 1.0 k 15 30 k MOTOROLA ANALOG IC DEVICE DATA MC33030 OUTLINE DIMENSIONS P SUFFIX PLASTIC PACKAGE CASE 648C–03 (DIP–16) –A– 16 9 1 8 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL. 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. 5. INTERNAL LEAD CONNECTION, BETWEEN 4 AND 5, 12 AND 13. –B– L NOTE 5 DIM A B C D E F G J K L M N C –T– M N SEATING PLANE K E F J 16 PL 0.13 (0.005) G D 16 PL 0.13 (0.005) T M A S NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.13 (0.005) TOTAL IN EXCESS OF D DIMENSION AT MAXIMUM MATERIAL CONDITION. 9 –B– P 8 PL 0.25 (0.010) 1 T B MILLIMETERS MIN MAX 18.80 21.34 6.10 6.60 3.69 4.69 0.38 0.53 1.27 BSC 1.02 1.78 2.54 BSC 0.20 0.38 2.92 3.43 7.62 BSC 0° 10° 0.39 1.01 DW SUFFIX PLASTIC PACKAGE CASE 751G–02 (SOP–16L) –A– 16 M S INCHES MIN MAX 0.740 0.840 0.240 0.260 0.145 0.185 0.015 0.021 0.050 BSC 0.040 0.070 0.100 BSC 0.008 0.015 0.115 0.135 0.300 BSC 0° 10° 0.015 0.040 M B M 8 G 14 PL J F R X 45° C –T– D 16 PL 0.25 (0.010) M T M SEATING PLANE K A MOTOROLA ANALOG IC DEVICE DATA S B DIM A B C D F G J K M P R MILLIMETERS MIN MAX 10.15 10.45 7.60 7.40 2.65 2.35 0.49 0.35 0.90 0.50 1.27 BSC 0.32 0.25 0.25 0.10 7° 0° 10.05 10.55 0.25 0.75 INCHES MIN MAX 0.400 0.411 0.292 0.299 0.093 0.104 0.014 0.019 0.020 0.035 0.050 BSC 0.010 0.012 0.004 0.009 0° 7° 0.395 0.415 0.010 0.029 S 15 MC33030 Motorola reserves the right to make changes without further notice to any products herein. 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How to reach us: USA / EUROPE / Locations Not Listed: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036. 1–800–441–2447 or 602–303–5454 JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, 6F Seibu–Butsuryu–Center, 3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 03–81–3521–8315 MFAX: [email protected] – TOUCHTONE 602–244–6609 INTERNET: http://Design–NET.com ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298 16 ◊ *MC33030/D* MOTOROLA ANALOG IC DEVICE DATA MC33030/D