CS4161XN8 [CHERRY]

85mA Dual H-Bridge Odometer Driver with Divide by Select and UVLO; 85毫安双H桥驱动器里程表带有分频选择和UVLO


型号：	CS4161XN8
厂家：	CHERRY SEMICONDUCTOR CORPORATION
描述：	85mA Dual H-Bridge Odometer Driver with Divide by Select and UVLO 85毫安双H桥驱动器里程表带有分频选择和UVLO 驱动器光电二极管
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CS4161

85mA Dual H-Bridge Odometer Driver

with Divide by Select and UVLO

Description

Features

■ Undervoltage Lockout

The CS4161 is a Stepper Motor

tends to minimize the inductive

Driver that implements an H-Bridge kick back energy that the part must

design in order to drive two coils in absorb. On chip clamp diodes are

■ Cross-conduction

Prevention Logic

an eight step sequence per revolu-

across each output to protect the

tion in the divide by 1 mode; 16 step part from the kick back energy that

■ Divide by 1 and Divide

sequence in the divide by 2 mode.

The H-Bridge is capable of deliver-

ing 85mA to the load.

it must absorb.

by 2 Modes

The CS4161 includes overvoltage

and short circuit protection circuit-

ry. It is lead for lead compatible

with the CS-8441. The CS4161

■ Guaranteed Monotonic

■ On Chip Flyback Diodes

The sequencer insures that the

odometer is monotonic. This

■

Fault Protection

Overvoltage

sequencer is configured such that

simultaneous conduction does not

occur. Before each successive out-

put sequence the part is taken

through a state where both outputs

are turned off individually. This

includes an additional undervoltage

lockout (UVLO) function which dis-

ables the output stage until the sup-

ply voltage rises above 5.6V, typi-

cally. The UVLO has hysteresis to

prevent any power up glitching.

Load Dump Protection

to 60V

Absolute Maximum Ratings

Supply Voltage (V_CC) (continuous) -40ûC to +105ûC.......................-0.5 to 24V

(100ms pulse transient) -40ûC to +105ûC...........................-0.5 to 60V

Input Voltage (V_IN) ...................................................................-0.3 to V_CC+0.3V

Operating Temperature Range....................................................-40¡C to 105¡C

Storage Temperature Range (TSTG)...........................................-65¡C to 150¡C

Junction Temperature Range .......................................................-40¡C to 150¡C

ESD (Human Body Model) .............................................................................2kV

Lead Temperature Soldering

Package Option

8 Lead PDIP

Wave Solder (through hole styles only)............10 sec. max, 260¡C peak

Block Diagram

Gnd

V_CC

COILB+

COILA+

COILAÐ

COILBÐ

SELECT

SENSOR

Coil

Driver

Input

Comp.

COILA+

COILA-

SENSOR

Overvoltage

and Short

Circuit

Sequencer

Protection

¸ 1

¸ 2

SELECT

Gnd

Coil

Driver

COILB

COILB-

Cherry Semiconductor Corporation

2000 South County Trail, East Greenwich, RI 02818

Tel: (401)885-3600 Fax: (401)885-5786

Email: info@cherry-semi.com

Web Site: www.cherry-semi.com

Rev. 1/28/97

Company

Electrical Characteristics: Unless otherwise stated, these specifications apply for -40¡C ² T_A² 105¡C, 6.5V ² V_CC² 15.5V.

All voltage shall be referenced to Gnd unless otherwise noted. Overvoltage shutdown of coils occurs when V_CC> 16V.

PARAMETER

■ Supply, V_CC

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Supply Voltage Range

-40¡C ² TA ² 105¡C

-40¡C ² TA ² 25¡C

Transient Pulse, 100ms

6.5

15.5

24.0

35.0

V_DC

Supply Current

Overvoltage Shutdown

Undervoltage Lockout Voltage

V_CC= 15.5 V_DC, Outputs not loaded

6.1

5.1

V_CCInitial Power up

5.6

UVLO Hysteresis

200

600

1000

■ Speed Sensor Input, SENSOR

Input Frequency Range

Switching Threshold

Hysteresis

0.2

1.0

2.6

kHz

V_DC

mV_DC

µA

V_DC

1.2

300

500

0.1

Input Bias Current

0.8V_DC² V_IN² V_CC

±1.0

V_CC

-15 to V_CC

-5.0

Input Voltage Range

Operating Input Voltage

Input Clamp Current

10k½ Resistor in Series

I Clamp at V_IN= 0V_DC

-0.4

■ Divider Select Input, SELECT

Logic 0 Input Voltage

100

mV_DC

V_DC

µA

Logic 1 Input Voltage

Logic 0 Input Current

Logic 1 Input Current

3.0

0V ² V_IN² 100mV

3V ² V_IN² 15.5 V_DC

-1

0.75

-100

2.00

■ Coil Output Drivers

Coil Load

+25¡C

198

210

222

Coil Inductance

Coil Resistance Temperature

Coefficient

0.35

%/¡C

* Energized Coil Voltage

(Both Polarities) A and B

_CC= 6.5 V_DC

V_CC- 1.5V V_CC- 0.9V

V_CC- 1.6V V_CC- 1.0V

V_DC

V_CC= 10.0 V_DC

V_CC= 15.5 V_DC, -20¡C ² T_A² 105¡C V_CC- 1.75V V_CC- 1.1V

V_CC= 15.5 V_DC, -40¡C ² T_A² -20¡C V_CC- 2.0V V_CC- 1.2V

De-energized Coil Leakage Current

±100

µA

■ Short Circuit Protection

Short Circuit Threshold

I Coil A + I Coil B

Short Circuit Turn-Off Delay

275

400

µs

* Voltage across the coils shall be measured at the specific voltages, but shall also be within linearly interpolated limits.

Package Lead Description

PACKAGE LEAD #

LEAD SYMBOL

FUNCTION

8L PDIP

Gnd

Ground connection.

COILA+

COILA-

SENSOR

SELECT

COILB-

COILB+

V_CC

Output stage, when active, this lead supplies current to COIL A.

Input signal from wheel speed or engine rpm.

Selects divide by 1 or divide by 2 mode.

Output stage, when active, this lead supplies current to COIL B.

Supply Voltage.

Circuit Operation

Speed Sensor Input

Short

Circuit

SENSOR is a PNP comparator input which accepts either a sine

wave or a square wave input. This input is protected from excur-

sions above V_CCas well as any below ground as long as the cur-

rent is limited to 1.5mA. It has an active clamp set to zero volts to

prevent negative input voltages from disrupting normal opera-

tion. The sensor input can withstand 150V_DCas long as the input

current is limited to 1.5mA max. using a series resistor of 100k½.

V_CC

Sense

Resistor

Overvoltage

and

Short

Circuit

Protection

Coil

Short

Circuit

Gnd

Sense

Resistor

Coil Driver Outputs

Simultaneously energizing the source and sink on either leg is

not permitted, i.e. Q1 & Q2 or Q3 & Q4 cannot be energized

simultaneously.

Figure 1: Coil Driver Output

Circuit function is not affected by inductive transients due to coil

loads as specified in the Transition States section.

The transition states occur as indicated in Table 1 without any

intermediate states permitted.

Table 1: Transition States

Output State Table

State

Coil A

OFF

Coil B

OFF

Figure 2: Divide by 1 SELECT Mode

OFF

DIVIDE BY TWO MODE SELECT = Gnd

The polarity definition for the coil driver outputs is as follows:

Connect

Coil +

Connect

Coil -

Polarity

Positive (+)

Negative (-)

V_CC

Gnd

V_CC

Divider Select Input

The speed sensor input frequency is either divided by one or divid-

ed by two depending on the state of the SELECT input as follows:

Logic 0 = divide by 2

Logic 1 = divide by 1

Figure 3: Divide by 2 SELECT Mode

Odometer Application Diagram

COIL A

COIL B

C1 - 10µF

C2 - 0.1µF

C3 - 0.01µF

COILA+ COILAÐ

COILB+ COILBÐ

R1 - 3.9½, 500mW

R2 - 100k½

R3 - 15k½

D1 - 1A, 600PIV

Z1 - 50V, 500mW

COIL A - 210 ±12½, 80mH

COIL B - 210 ±12½, 80mH

CS4161

SENSOR

Gnd

SELECT

IGN

Buffered Speed Signal

(Open Collector Drive)

Package Specification

PACKAGE DIMENSIONS IN mm (INCHES)

PACKAGE THERMAL DATA

8L PDIP

Thermal Data

Lead Count

Metric

English

Max Min

.400 .355

R_QJC

typ

ûC/W

Max

10.16

Min

9.02

R_QJA

typ

100

8L PDIP

Plastic DIP (N); 300 mil wide

7.11 (.280)

6.10 (.240)

1.77 (.070)

1.14 (.045)

8.26 (.325)

7.62 (.300)

2.54 (.100) BSC

3.68 (.145)

2.92 (.115)

0.39 (.015)

MIN.

.356 (.014)

.203 (.008)

.558 (.022)

.356 (.014)

Some 8 and 16 lead

packages may have

1/2 lead at the end

of the package.

REF: JEDEC MS-001

All specs are the same.

Ordering Information

Ch erry Sem icon du ctor Corporation reserves th e

righ t to m ake ch an ges to th e specification s with ou t

n otice. Please con tact Ch erry Sem icon du ctor

Corporation for th e latest available in form ation .

Part Number

CS4161XN8

Description

8L PDIP

Rev. 1/28/97

CS4161XN8 [CHERRY]

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