mc33092adw Freescale Semiconductor, Inc, mc33092adw Datasheet

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mc33092adw

Manufacturer Part Number
mc33092adw
Description
Alternator Voltage Regulator
Manufacturer
Freescale Semiconductor, Inc
Datasheet
Alternator Voltage Regulator
Response Control (LRC) of diode rectified alternator charging systems, as
commonly found in automotive applications. The MC33092A provides load
response control of the alternator output current to eliminate engine speed
hunting and vibration due to sudden electrical loads which cause abrupt
torque loading of the engine at low RPM. Two load response rates are
selectable using Pin 11. The timing of the response rates is dependent on
the oscillator frequency.
the system battery voltage to an externally programmed set point value and
pulse width modulates an N–channel MOSFET transistor to control the
average alternator field current.
(Remote)
MOTOROLA ANALOG IC DEVICE DATA
Supply
(Local)
Phase
Adjust
Sense
at Low RPM
Winding
Minimum RFI
The MC33092A is specifically designed for voltage regulation and Load
In maintaining system voltage, the MC33092A monitors and compares
Forced Load Response Control (LRC) with Heavy Load Transitions
Capable of Regulating Voltage to
Operating Frequency Selectable with One External Resistor
< 0.1 V Variation over Speed Range of 2000 to 10,000 RPM
< 0.4 V Variation over 10% to 95% of Maximum Alternator Output
Maintains Regulation with External Loads as Low as 1.0 A
Load Dump Protection of Lamp, Field Control Devices, and Loads
Duty Cycle Limit Protection
Provides High Side MOSFET Control of a Ground Referenced Field
Controlled MOSFET and Flyback Diode Recovery Characteristics for
< 2.0 mA Standby Current from Battery @ 25 C
< 3.0 mA Standby Current from Battery Over Temperature Range
Optional 2.5 or 10 sec. LRC Rate Control (Osc. Freq. = 280 kHz)
Undervoltage, Overvoltage and Phase Fault (Broken Belt) Detection
Osc.
Reg
12
10
2
7
X1
Oscillator
Sense
Circuit
Lost
Oscillator
and Switch
Combiner
Signal
MC33092A
9
Prescaler
(2
4
)
Pass
Filter
Low
Counter
Simplified Block Diagram
Buff
1
Counter
FB
DAC
(2
19
8
)
UV
Freescale Semiconductor, Inc.
12
Regulate
4
20
For More Information On This Product,
V
ref
0.1 V @ 25 C
Overvoltage
Control
Load Dump
Divide By
(1/12/48)
Logic
8
V
ref
Rate
O
Reference
Bandgap
Go to: www.freescale.com
11
Bias
Undervoltage
8
Control
Output
Up/Down
Counter
(2
14
Supply
Power
V
4
)
CC
1
Up/Down
Charge
Power
Circuit
Pump
Control
Lamp
Logic
6
Gnd
13
V
15
CC
3
17
18
Source
3
4
5
Gate
Lamp
Coll.
Lamp
Base
Gnd
MC33092ADW T
Motorola, Inc. 1997
Device
Lamp Collector
Remote Sense
Filter Buffer
Lamp Base
ALTERNATOR VOLTAGE
Oscillator
Oscillator
Gnd
ORDERING INFORMATION
Phase
Adjust
MC33092A
V
ref
Order this document by MC33092A/D
PIN CONNECTIONS
O
SEMICONDUCTOR
TECHNICAL DATA
REGULATOR
PLASTIC PACKAGE
20
10
Temperature Range
1
2
3
4
5
6
7
8
9
A
DW SUFFIX
CASE 751D
= – 35 to +125 C
(SO–20L)
Operating
(Top View)
1
20
19
18
17
16
15
14
13
12
11
V
Gate
Undervoltage
Source
NC
Gnd
V
V
Supply
Regulation
Rate
ref
CC
CC
Package
SO–20L
1
3
Rev 0
1

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mc33092adw Summary of contents

Page 1

... Control Lamp 4 Control Control Logic Lamp Logic Base 8 5 Up/Down Divide By Counter Gnd (1/12/48 MC33092ADW Rate Gnd Motorola, Inc. 1997 Go to: www.freescale.com Order this document by MC33092A/D MC33092A ALTERNATOR VOLTAGE REGULATOR SEMICONDUCTOR TECHNICAL DATA SUFFIX PLASTIC PACKAGE CASE 751D (SO– ...

Page 2

... Freescale Semiconductor, Inc. MAXIMUM RATINGS Rating Power Supply Voltage Load Dump Transient Voltage (Note 1) Negative Voltage (Note 2) Power Dissipation and Thermal Characteristics Maximum Power Dissipation @ T = 125 C A Thermal Resistance, Junction–to–Ambient Operating Junction Temperature Operating Ambient Temperature Range Storage Temperature Range NOTE: ESD data available upon request ...

Page 3

... Freescale Semiconductor, Inc. For More Information On This Product, MOTOROLA ANALOG IC DEVICE DATA MC33092A Go to: www.freescale.com Figure 1. 3 ...

Page 4

... Freescale Semiconductor, Inc. Figure 2. Standby Current versus Temperature 0 Current from 12.8 V (see Figure 0.5 V (Ignition OFF Pin 2 Pin 12 0 Pin 10 Pin 11 0.5 0.4 0.3 0.2 – 55 – AMBIENT TEMPERATURE ( C) A Figure 4. Reference Voltage versus Temperature 2 Voltage at Pin 20 ref V = 12.8 V (see Figure 8) ...

Page 5

... Freescale Semiconductor, Inc. For More Information On This Product, MOTOROLA ANALOG IC DEVICE DATA MC33092A Go to: www.freescale.com Figure 8. 5 ...

Page 6

... Freescale Semiconductor, Inc. Pin No. Function 1 FB This pin provides a filtered result of the Sense input (if the Sense input is used) or the Supply Regulation input (if the Sense input is not used). 2 Sense The Sense input is a remote (Kelvin), low current battery voltage reference input used to give an accurate representation of the true battery voltage ...

Page 7

... Freescale Semiconductor, Inc. Introduction The MC33092A, designed to operate system, is intended to control the voltage in an automotive system that uses a 3 phase alternator with a rotating field winding. The system shown in Figure 1 includes an alternator with its associated field coil, stator coils and rectifiers, a battery, a lamp and an ignition switch ...

Page 8

... Freescale Semiconductor, Inc. The digital ON–time is determined by comparing the output of the up/down counter to a continuous counter and decoding when they are equal. This event will terminate drive to the MOSFET. A count direction shift register requires three consecutive clock pulses with a state change on the data input of the register to result in an up/down count direction change ...

Page 9

... Freescale Semiconductor, Inc. –A– –B– 20X 0.010 (0.25 18X K For More Information On This Product, MOTOROLA ANALOG IC DEVICE DATA MC33092A OUTLINE DIMENSIONS DW SUFFIX PLASTIC PACKAGE CASE 751D–04 (SO–20L) ISSUE E P 10X 0.010 (0.25 ...

Page 10

... Freescale Semiconductor, Inc. 10 For More Information On This Product, MC33092A NOTES MOTOROLA ANALOG IC DEVICE DATA Go to: www.freescale.com ...

Page 11

... Freescale Semiconductor, Inc. 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. “ ...

Page 12

... Freescale Semiconductor, Inc. How to reach us: USA / EUROPE / Locations Not Listed: Motorola Literature Distribution; P.O. Box 5405, Denver, Colorado 80217. 1–303–675–2140 or 1–800–441–2447 Customer Focus Center: 1–800–521–6274 Mfax : RMFAX0@email.sps.mot.com – TOUCHTONE 1–602–244–6609 Motorola Fax Back System – ...

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