MC33191 データシートの表示（PDF） - Motorola => Freescale

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MC33191

Automotive 12V ignition driver

Motorola => Freescale 

Freescale Semiconductor, Inc.

MC33191

FUNCTIONNAL DESCRIPTION

Application /System Performances

1. Reluctance sensor input.

- Minimum input level of 200mV peak to peak

- Maximum input level of 40V peak to peak

2. Hall sensor input

- Open collector output desirable.

- Input level of 0.5V to Vbat

3. Operating voltage range

- Normal range from 9V to 16V.

-Operational range with some modiÞcations to

parameters from 6V to 24V.

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.

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.

- No separate start wire into module is required

- Switch occurs at approximatly 12Hz but can be

changed within a narrow region

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

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.

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

5

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