Dual Gauge Driver

www.DataSheet4U.com Freescale Semiconductor Technical Data Document Number: MC33976 Rev. 3.0, 8/2006 Dual Gauge Driver with Configurable Response Time The 33976 is a single-packaged, Serial Peripheral Interface (SPI) controlled, dual step motor gauge driver integrated circuit (IC). This monolithic IC consists of four dual output H-Bridge coil drivers and the associated control logic. Each pair of H-Bridge drivers is used to automatically control the speed, direction, and magnitude of current through the two coils of a two-phase instrumentation step motor, similar to an MMT-licensed AFIC 6405 or Switec MS-X15.xxx motor. The 33976 is ideal for use in automotive instrumentation systems requiring distributed and flexible step motor gauge driving. The device also eases the transition to step motors from air core motors by emulating the air core pointer movement with little additional processor bandwidth utilization. Features •MMT-Licensed Two-Phase Step Motor Compatible •Switec MS-X15.xxx Step Motor Compatible •Minimal Processor Overhead Required •Fully Integrated Pointer Movement and Position State Machine with Channel-Independent Configurable Pointer Movement •4096 Possible Steady State Pointer Positions •340° Maximum Pointer Sweep •Maximum Acceleration of •Maximum Pointer Velocity of 400°/s •Analog Microstepping (12 Steps/Degree of Pointer Movement) •Pointer Calibration and Return to Zero (RTZ) •SPI-Controlled 16-Bit Word •Calibratable Internal Clock •Low Sleep Mode Current •Pb-Free Packaging Designated by Suffix Code EG VPWR 33976 CONFIGURABLE DUAL GAUGE DRIVER DW SUFFIX EG SUFFIX (PB-FREE) 98ASB42344B 24-LEAD SOICW ORDERING INFORMATION Device MC33976DW/R2 MCZ33976EG/R2 Temperature Range (TA) - 40°C to 125°C Package 4500°/s2 24 SOICW 33976 VPWR 5.0 V Regulator VDD VDD SIN0+ SIN0Motor 0 COS0+ COS0RTZ RST CS SCLK SI SO GND SIN1+ SIN1Motor 1 COS1+ COS1- MCU Figure 1. 33976 Simplified Application Diagram Freescale Semiconductor, Inc. reserves the right to change the detail specifications, as may be required, to permit improvements in the design of its products. © Freescale Semiconductor, Inc., 2006. All rights reserved. INTERNAL BLOCK DIAGRAM INTERNAL BLOCK DIAGRAM VPWR Internal Regulator COS0+ COS0SIN0+ SIN0COS1+ COS1RTZ Logic Underand Overvoltage Detect ILIM H-Bridge and Control RTZ VDD COS0 CS SCLK SO SI SPI SIN0 COS1 RST SIN1+ SIN1- Overtemperature Detect SIN1 Oscillator GND (8) Figure 2. 33976 Simplified Internal Block Diagram 33976 2 Analog Integrated Circuit Device Data Freescale Semiconductor PIN CONNECTIONS PIN CONNECTIONS COS0+ COS0SIN0+ SIN0GND GND GND GND CS SCLK SO SI 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 COS1+ COS1SIN1+ SIN1GND GND GND GND VPWR RST VDD RTZ Figure 3. 33976 Pin Connections Table 1. 33976 Pin Definitions Pin Number Pin Name (MS Motor Pin #) 1 2 3 4 5 – 8, 17– 20 9 10 11 12 13 14 15 16 COS0+ (MS #4) COS0− (MS #3) SIN0+(MS #1) SIN0− (MS #2) GND CS SCLK SO SI RTZ VDD RST VPWR (MS Motor Pin #) 21 22 23 24 SIN1− (MS #2) SIN1+ (MS #1) COS1− (MS #3) COS1+ (MS #4) Ground Input Input Output Input Output Input Input Input Output Ground Chip Select Serial Clock Serial Output Serial Input Multiplexed Output Voltage Reset Battery Voltage H-Bridge Outputs 1 Pin Function Output Formal Name H-Bridge Outputs 0 Definition Each pin is the output pin of a half bridge, designed to source or sink current. These pins serve as the ground for the source of the low-side output transistors as well as the logic portion of the device. This pin is connected to a chip select output of a LSI IC. This pin is connected to the SCLK pin of the master device and acts as a bit clock for the SPI port. This pin is connected to the SPI Serial Data Input pin of the master device or to the SI pin of the next device in a daisy chain. This pin is connected to the SPI Serial Data Output pin of the master device from which it receives output command data. This is the multiplexed output pin of the non-driven coil during a Return to Zero (RTZ) event. This SPI and logic power supply input will work with 5.0 V supplies. This input has an internal active pull-up. Power supply. Each of these pins is the output pin of a half bridge, designed to source or sink current. 33976 Analog Integrated Circuit Device Data Freescale Semiconductor 3 ELECTRICAL CHARACTERISTICS MAXIMUM RATINGS ELECTRICAL CHARACTERISTICS MAXIMUM RATINGS Table 2. Maximum Ratings All voltages are with respect to ground unless otherwise noted. Exceeding these ratings may cause a malfunction or permanent damage to the device. Rating Power Supply Voltage Steady State Input Pin Voltage (1) SIN +/- COS +/- Continuous Per Output Current (2) Storage Temperature Operating Junction Temperature Thermal Resistance Junction to Ambient Junction to Lead ESD Voltage (3) Human Body Model Machine Model Lead Soldering Temperature (4) VESD1 VESD2 TSOLDER ±2000 ±200 245 °C RθJA RθJL 60 20 V VIN IOUTMAX TSTG TJ Symbol VPWR(SUS) -0.3 to 41 -0.3 to 7.0 40 -55 to 150 -40 to 150 V mA °C °C °C/W Value Unit V Notes 1. Exceeding voltage limits on Input pins may cause permanent damage to the device. 2. Output continuous output rating so long as maximum junction temperature is not exceeded. Operation at 125°C ambient temperature will require maximum output current computation using package thermal resistances. 3. ESD1 testing is performed in accordance with the Human Body Model (CZAP = 100 pF, RZAP = 1500 Ω), ESD2 testing is performed in accordance with the Machine Model (CZAP = 200 pF, RZAP = 0 Ω). 4. Lead soldering temperature limit is for 10 seconds maximum duration. Not designed for immersion soldering. Exceeding these limits may cause malfunction or permanent damage to the device. 33976 4 Analog Integrated Circuit Device Data Freescale Semiconductor ELECTRICAL CHARACTERISTICS STATIC ELECTRICAL CHARACTERISTICS STATIC ELECTRICAL CHARACTERISTICS Table 3. Static Electrical Characteristics Characteristics noted under conditions 4.75 V ≤ VDD ≤ 5.25 V, - 40°C ≤ TJ ≤ 150°C, GND = 0 V unless otherwise noted. Typical values noted reflect the approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted. Characteristic POWER INPUT Supply Voltage Range Fully Operational Limited Operational (5), (6) VPWR Supply Current Gauge 1 and 2 Outputs ON, No Output Loads VPWR Supply Current (All Outputs Disabled) Reset = Logic [0], VDD = 5.0 V Reset = Logic [0], VDD = 0 V Overvoltage Detection Level (7) Undervoltage Detection Level (8) Symbol Min Typ Max Unit VPWR 6.5 4.0 IPWR(ON) – 4.0 6.0 – – 26 26 V mA µA IPWSLP1 IPWRSLP2 VPWROV VPWRUV VDD VDDUV IDD(OFF) IDD(ON) – – 26 5.0 4.5 – 42 15 32 5.6 5.0 – 60 25 38 6.2 5.5 4.5 V V V V µA mA Logic Supply Voltage Range (5.0 V Nominal Supply) Under VDD Logic Reset VDD Supply Current Sleep: Reset Logic [0] Outputs Enabled POWER OUTPUTS Microstep Output (Measured Across Coil Outputs) SIN0,1, ± (COS0,1, ±) (refer to Table 1) ROUT = 200 Ω, PE6 = 0 Steps 6, 18 (0, 12) Steps 5, 7, 17, 19 (1, 11, 13, 23) Steps 4, 8, 16, 20 (2, 10, 14, 22) Steps 3, 9, 15, 21 (3, 9, 15, 21) Steps 2, 10, 14, 22 (4, 8,16, 20) Steps 1, 11, 13, 23 (5, 7, 17, 19) Steps 0, 12 (6, 18) Full Step Active Output (Measured Across Coil Outputs) SIN0, 1, ± (COS0, 1, ±) (see Figure 8, page 25) Steps 1, 3 (0, 2) Microstep, Full Step Output (Measured from Coil Low Side to Ground) SIN0, 1, ± (COS0, 1, ±), IOUT = 30 mA – – 40 1.0 65 1.8 V VST6 VST5 VST4 VST3 VST2 VST1 VST0 VFS 4.82 0.94 VST6 0.84 VST6 0.68 VST6 0.47 VST6 0.23 VST6 -0.1 5.3 0.97 VST6 0.87 VST6 0.71 VST6 0.50 VST6 0.26 VST6 0 6.0 1.0 VST6 0.96 VST6 0.8 VST6 0.57 VST6 0.31 VST6 0.1 V 4.9 VLS 0 5.3 6.0 V 0.1 0.3 Notes 5. Outputs and logic remain active; however, the larger coil voltage levels may be clipped. The reduction in drive voltage may result in a loss of position control. 6. The logic will reset at some level below the specified Limited Operational minimum. 7. Outputs will disable and must be re-enabled via the PECCR command. 8. Outputs remain active; however, the reduction in drive voltage may result in a loss of position control. 33976 Analog Integrated Circuit Device Data Freescale Semiconductor 5 ELECTRICAL CHARACTERISTICS STATIC ELECTRICAL CHARACTERISTICS Table 3. Static Electrical Characteristics (continued) Characteristics noted under conditions 4.75 V ≤ VDD ≤ 5.25 V, - 40°C ≤ TJ ≤ 150°C, GND = 0 V unless otherwise noted. Typical values noted reflect the approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted. Characteristic POWER OUTPUTS (CONTINUED) Output Flyback Clamp (9) Output Current Limit (Output = Vst6) Overtemperature Shutdown (12) Overtemperature Hysteresis (9) CONTROL I/O Input Logic High Voltage (10) Input Logic Low Voltage (10) (11) Symbol Min Typ Max Unit VFB ILIM OTSD OTHYST – 40 155 8.0 VST6 + 0.5 100 – – VST6 + 1.0 170 180 16 V mA °C °C VIH VIL VIN(HYST) IDWN IUP VSOH VSOL ISOLK CIN 2.0 – – 3.0 5.0 0.8 VDD – -5.0 – – – – 100 – – – 0.2 0 4.0 – – 0.8 – 20 20 – 0.4 5.0 12 20 V V mV µA µA V V µA pF pF Input Logic Voltage Hysteresis Input Logic Pull Down Current (SI, SCLK) Input Logic Pull-Up Current (CS, RST) SO High-State Output Voltage (IOH = 1.0 mA) SO Low-State Output Voltage (IOL = -1.6 mA) SO Tri-State Leakage Current (CS ≥ 3.5 V) Input Capacitance (12) (12) SO Tri-State Capacitance CSO Notes 9. Not 100 percent tested. 10. VDD = 5.0 V. 11. 12. This parameter is guaranteed by design, but it is not production tested. Capacitance not measured. This parameter is guaranteed by design, but it is not production tested. 33976 6 Analog Integrated Circuit Device Data Freescale Semiconductor ELECTRICAL CHARACTERISTICS DYNAMIC ELECTRICAL CHARACTERISTICS DYNAMIC ELECTRICAL CHARACTERISTICS Table 4. Dynamic