Freescale Semiconductor, Inc. MOTOROLA MC33191 SEMICONDUCTOR TECHNICAL DATA 12V IGNITION DRIVER Prototype Information SILICON MONOLITHIC INTEGRATED CIRCUIT Freescale Semiconductor, Inc... Automotive 12V ignition driver The MC33191 is for use in 12V ignition systems designed for use in harsh automotive and industrial applications which require the capability of handling high voltage attributed to load and Þeld dump transients. In addition, the device can be used under reverse and double battery conditions. The MC33191 is available in a 16 pin narrow body DIP plastic and SO package. DW SUFFIX PLASTIC PACKAGE CASE 751G SO-16L PIN ASSIGNMENT ¥ Designed for Automotive Ignition Application ¥ Continuous System Voltage up to 28.6V ¥ Continuous Operating Ambient Temperature Range from -30°C to +125°C ¥ Frequency Range from 1Hz to 400 Hz ¥ Coil Current Regulation ¥ Hall Effect and Reluctance Sensor Applications. Vcc 1 16 Gnd in+ 2 15 ÔÕDÕÕ. in- 3 14 ÔÕCÕÕ Isr 4 13 Output C stall 5 12 H.V.C. VLS 6 11 I.S. C25/75 7 10 M.B Cad 8 9 Vreg ORDERING INFORMATION Device Temperature Range Package MC33191P -30°C to +125°C DIL16 SimpliÞed Block Diagram 9 1 Vreg Series Reg. 15 10(MB) 12 Band Gap Vcc - 2 1.5KW Input + 3 14 13 20mA Current sense 80mA 11 LOGIC Vreg Vreg Vreg 6.7mA Retard 6 mA 5 4 25/75 8 mA 26.8mA Stall 31.8mA to 80mA Slow Speed 3.2mA Adapt dwell 7 6 1.92mA 8 This document contiains information on a new product under development. Motorola reserves the right to change or discontinue this product without notice. GND 16 Ó Motorola,Inc For More Information On This Product, Go to: www.freescale.com Date : 10/12/98 Rev : 1.0 Freescale Semiconductor, Inc. MC33191 Freescale Semiconductor, Inc... DEVICE PIN OUT IDENTIFICATION Pin Function Pin Function 1 Vcc 9 V reg 2 Input + 10 Master Bias 3 Input - 11 Current Sense 4 Start Retard I Trim 12 High Voltage Clamp 5 Stall Capacitor 13 Output 6 V Low Speed 14 ÔÕ C ÔÕ 7 25/75 Capacitor 15 ÔÕ D ÔÕ 8 Adaptive Dwell Cap. 16 Master bias ELECTRICAL REQUIREMENTS The IC performs to the limits of the table between temperature range of - 30°C to +125°C and it operates between the temperature range of - 40°C to +150°C Symbol Description Min Max Unit ICC I.C.Drain Current 3 5 mA Vreg Regulator output voltage 6,5 7,1 V ICCH I.C. Drain Current High Voltage 10 mA Vin (+) P (+) Input, Positive Clamp 7 8 V Vin (+) N (+) Input, Negative Clamp 1 2 V Vin (-) P (-) Input, Positive Clamp 7 8 V Vin (-) N (-) Input, Negative Clamp 1 2 V Vin TH Input Threshold -25 +25 mA Vin Hys. RM Run Mode Hysteresis 280 372 mV Vin Hys. SS Slow Speed Hysteresis 54 88 mV I75 25/75 Current Up 6.2 7.68 mA I75 / I25 I75 / I25 Current ratio 0.317 0.365 I75 / I ADU I75 / IADU Current ratio 0.794 0.878 I ADU / IADD IADU / IADD Current ratio 1.49 1.7 I ADU / IADR I ADU / I ADR Current ratio 2.35 2.66 VEDR Reduced Excess Dwell Trip Voltage 15.5 19 I 75 / ISU I 75 / I SU Current Ratio 1.05 1.27 I SD / I SU I SD/ I SU Current ratio 3.9 4.95 VHVC Collector Clamp Voltage 14.4 16.7 V VCS Current Sense Voltage 133 185 mV VOS Output Saturation Voltage 985 mV IOLK Output Leakage Current 25 mA VOSD Overvoltage Shutdown Voltage 27 30 V VSSS Slow Speed Stall 2.4 3.1 V MC33191 MOTOROLA For More Information On This Product, Go to: www.freescale.com V 2 Freescale Semiconductor, Inc. MC33191 Figure 1. Test Schematic Vbat 300W Vbat 1 Vcc GND 16 2 In+ ÔÕDÕÕ 15 3 In- ÔÕCÔÕ 14 4 Isr OUT 13 5 Cs Clamp 12 6 Vls IS 11 5.1KW 68W Freescale Semiconductor, Inc... 5.1KW 33W 6.8V 500W 7 C25/75 MB 10 8 Cod Vreg 9 57KW 26KW Figure 2. Application Circuit (Reluctance Sensor Input) + Ign 0.1 200 - Battery 1/2W 68 2.5W +Sensor Reluctance 0.1 Vcc Ground 16 2 IN+ D 15 3 IN- 4 6.8V 5.0W Ignition Coil 5.0k 33 1/4W -Sensor 0.1 1 C 14 Retard Output 13 5 Stall Clamp 12 6 Slow Speed Current Sense 11 Bias 10 5.0k Q1 200 5k 1.0 400 16k 7 25/75 .05 200/400 400 Gnd 0.1 57k 8 Adaptive Dwell Vref 9 0.1 NOTE : 10k 1. Q1 = BUZ111 or Eqivalent 2. T = Trim Resistors MC33191 MOTOROLA For More Information On This Product, Go to: www.freescale.com 3 Freescale Semiconductor, Inc. MC33191 Figure 3. Application Circuit (Hall Sensor Input) 85 Hall Voltage + Ign - Battery 0.1 1.1k 68 2.5W 200 1/2W 18V Hall Output 100 Vcc Ground 16 2 IN+ D 15 3 IN- 4 1 Engine Microcontroller 0.1 Ignition Coil 6.8V 5.0W 0.1 4.7k 10k 33 Freescale Semiconductor, Inc... 1/4W C 14 Retard Output 13 5 Stall Clamp 12 6 Slow Speed Current Sense 11 Q1 200 5k 5.0k 1.0 400 3.0k 16k 7 5.1k 25/75 Bias T .05 10 400 285 T T Gnd 0.1 57k 8 Adaptive Dwell Vref 9 0.1 10k NOTE : 1. Q1 = BUZ111 or Eqivalent 2. T = Trim Resistors MC33191 MOTOROLA For More Information On This Product, Go to: www.freescale.com 4 Freescale Semiconductor, Inc. MC33191 FUNCTIONNAL DESCRIPTION - No separate start wire into module is required - Switch occurs at approximatly 12Hz but can be changed within a narrow region Application /System Performances 1. Reluctance sensor input. - Minimum input level of 200mV peak to peak - Maximum input level of 40V peak to peak 5. Input noise immunity is provided by hysteresis on the input comparator. - 100mV of hysteresis is in slow speed mode - 500mV of hysteresis in run mode 2. Hall sensor input - Open collector output desirable. - Input level of 0.5V to Vbat Freescale Semiconductor, Inc... 3. Operating voltage range - Normal range from 9V to 16V. -Operational range with some parameters from 6V to 24V. modiÞcations to 4. Transient considerations - Load dumps should not exceed +90V peak with 250ms time constant. - Field decay should not exceed -90V peak with 25ms time constant. 5. Operating temperature range - Continuous operation : -30°C to 125°C 6. Rate of acceleration should not exceed 250Hz/s from 20Hz to 300Hz (input frequency). If this is exceeded the module will still function but an occasional spark may be missed and dwell calculations will be negated for one or two output cycles. 7. Normal operating frequency range is from 1Hz to 400Hz. Application features and functions 1. Power on : On initial power up there will be no output current and this condition will be maintained until the Þrst input cycle is run at the input terminals. 6. Dwell control is modiÞed under different operating conditions. - In slow speed mode dwell follows the duty cycle of the input signal - In normal run mode dwell is controlled at 16% of cycle time plus coil rise time to current limit level. - At high speed (determined by coil rise time) dwell is 75% of input cycle time. 7. Output current is normally 5.5 +/- 0.5 Amps. It can be operated at higher or lower limits if required. (Not excluding 7.5 Amps). 8. Start Retard On slow speed mode, a retard signal is generated that is inversely proportional to input frequency. The retard is nominally 4.8% at 1Hz, (related to input duty cycle) and can be modiÞed to meet other application requirement. 9. High voltage on the output transistor is nominally clamped at 350V but can be adjusted if necessary. 10. High Battery voltage operation - At a battery voltage of 16V the dwell is modiÞed in run speed to 10% of cycle time plus coil rise time. - At a battery voltage of approximately 30V the module will shutdown to prevent damages to the output devices. 2. Push start capability : The unit may be push started as any input signal exceeding 200mV peak to peak will produce a peak 3. Stall shutdown : If for a period of 5 seconds no input signal is present, the unit will shutdown and output current will be reduced at a rate slow enough to present a spark. 4. Automatic switching from a slow speed to run mode at a preset frequency. Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. ªTypicalº parameters which may be provided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including ªTypicalsº must be validated for each customer application by customer's technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. MC33191 MOTOROLA For More Information On This Product, Go to: www.freescale.com 5