Datasheet CS4161XN8 Datasheet (Cherry Semiconductor)

1

Features

■ Undervoltage Lockout

■ Cross-conduction

Prevention Logic

■ Divide by 1 and Divide

by 2 Modes

■ Guaranteed Monotonic

■ On Chip Flyback Diodes

■ Fault Protection

Overvoltage
Load Dump Protection

to 60V

Package Option

8 Lead PDIP

CS4161

85mA Dual H-Bridge Odometer Driver

with Divide by Select and UVLO

1

Gnd

COILA+

COILAÐ

SENSOR

V

CC

COILB+

COILBÐ

SELECT

CS4161

Description

The CS4161 is a Stepper Motor
Driver that implements an H-Bridge
design in order to drive two coils in
an eight step sequence per revolu­tion in the divide by 1 mode; 16 step
sequence in the divide by 2 mode.
The H-Bridge is capable of deliver­ing 85mA to the load.

The sequencer insures that the
odometer is monotonic. This
sequencer is configured such that
simultaneous conduction does not
occur. Before each successive out­put sequence the part is taken
through a state where both outputs
are turned off individually. This

tends to minimize the inductive
kick back energy that the part must
absorb. On chip clamp diodes are
across each output to protect the
part from the kick back energy that
it must absorb.

The CS4161 includes overvoltage
and short circuit protection circuit­ry. It is lead for lead compatible
with the CS-8441. The CS4161
includes an additional undervoltage
lockout (UVLO) function which dis­ables the output stage until the sup­ply voltage rises above 5.6V, typi­cally. The UVLO has hysteresis to
prevent any power up glitching.

Block Diagram

Absolute Maximum Ratings

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

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

Input Voltage (VIN) ...................................................................-0.3 to VCC+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

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

Cherry Semiconductor Corporation

2000 South County Trail, East Greenwich, RI 02818

Tel: [phone] Fax: [phone]

Email: [e-mail]

Web Site: www.cherry-semi.com

A Company

¨

Rev. 1/28/97

V

SENSOR

SELECT

Gnd

CC

Input

Comp.

¸ 1
¸ 2

Sequencer

Coil

Driver

A

Overvoltage

and Short

Circuit

Protection

Coil

Driver

B

COILA+

COILA-

COILB

+

COILB-

2

Electrical Characteristics: Unless otherwise stated, these specifications apply for -40¡C ² TA ² 105¡C, 6.5V ² V

CC

² 15.5V.

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

CC

> 16V.

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

CS4161

Package Lead Description

PACKAGE LEAD # LEAD SYMBOL FUNCTION

8L PDIP

1 Gnd Ground connection.
2 COILA+ Output stage, when active, this lead supplies current to COIL A.
3 COILA- Output stage, when active, this lead supplies current to COIL A.
4 SENSOR Input signal from wheel speed or engine rpm.
5 SELECT Selects divide by 1 or divide by 2 mode.
6 COILB- Output stage, when active, this lead supplies current to COIL B.
7 COILB+ Output stage, when active, this lead supplies current to COIL B.
8V

CC

Supply Voltage.

■ Supply, V

CC

Supply Voltage Range -40¡C ² TA ² 105¡C 6.5 15.5 V

DC

-40¡C ² TA ² 25¡C 6.5 24.0 V

DC

Transient Pulse, 100ms 35.0 V

DC

Supply Current VCC= 15.5 VDC, Outputs not loaded 24 35 mA
Overvoltage Shutdown 16 23 V
Undervoltage Lockout Voltage VCCInitial Power up 5.1 5.6 6.1 V

UVLO Hysteresis 200 600 1000 mV

■ Speed Sensor Input, SENSOR

Input Frequency Range 0.2 1.0 kHz
Switching Threshold 1.2 2.6 V

DC

Hysteresis 300 500 mV

DC

Input Bias Current 0.8V

DC ²VIN ²VCC

0.1 ±1.0 µA

Input Voltage Range 0 V

CC

V

DC

Operating Input Voltage 10k½ Resistor in Series -15 to V

CC

V

DC

Input Clamp Current I Clamp at VIN= 0V

DC

-0.4 -5.0 mA

■ Divider Select Input, SELECT

Logic 0 Input Voltage 100 mV

DC

Logic 1 Input Voltage 3.0 V

DC

Logic 0 Input Current 0V ² V

IN

² 100mV -1 -100 µA

Logic 1 Input Current 3V ² V

IN

² 15.5 V

DC

0.75 2.00 mA

■ Coil Output Drivers

Coil Load +25¡C 198 210 222 ½
Coil Inductance 80 mH
Coil Resistance Temperature Coefficient 0.35 %/¡C
* Energized Coil Voltage VCC= 6.5 V

DC

VCC- 1.5V VCC- 0.9V V

DC

(Both Polarities) A and B VCC= 10.0 V

DC

VCC- 1.6V VCC- 1.0V V

DC

VCC= 15.5 VDC, -20¡C ² TA ² 105¡C V

CC

- 1.75V VCC- 1.1V V

DC

VCC= 15.5 VDC, -40¡C ² TA ² -20¡C V

CC

- 2.0V VCC- 1.2V V

DC

De-energized Coil Leakage Current ±100 µA

■ Short Circuit Protection

Short Circuit Threshold 275 400 mA

I Coil A + I Coil B

Short Circuit Turn-Off Delay 5 µs

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

SENSOR is a PNP comparator input which accepts either a sine
wave or a square wave input. This input is protected from excur­sions above V

CC

as well as any below ground as long as the cur­rent is limited to 1.5mA. It has an active clamp set to zero volts to
prevent negative input voltages from disrupting normal opera­tion. The sensor input can withstand 150V

DC

as long as the input

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

Simultaneously energizing the source and sink on either leg is
not permitted, i.e. Q1 & Q2 or Q3 & Q4 cannot be energized
simultaneously.

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

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

Connect Connect

Polarity Coil + Coil -

Positive (+) V

CC

Gnd

Negative (-) Gnd V

CC

The speed sensor input frequency is either divided by one or divid­ed by two depending on the state of the SELECT input as follows:

Logic 0 = divide by 2

Logic 1 = divide by 1

Divider Select Input

Output State Table

State Coil A Coil B

0++
1 OFF +
2-+
3 - OFF
4-­5 OFF ­6+­7 + OFF

Coil Driver Outputs

Speed Sensor Input

3

CS4161

Circuit Operation

Figure 1: Coil Driver Output

Figure 3: Divide by 2 SELECT Mode

DIVIDE BY TWO MODE SELECT = Gnd

COILA+ COILAÐ COILB+ COILBÐ

V

CC

SELECT Gnd

SENSOR

CS4161

IGN

D1

R1

R3

Z1

C1

C2

R2

C3

Buffered Speed Signal
(Open Collector Drive)

COIL A COIL B

Odometer Application Diagram

C1 - 10µF
C2 - 0.1µF
C3 - 0.01µF
R1 - 3.9½, 500mW
R2 - 100k½
R3 - 15k½
D1 - 1A, 600PIV
Z1 - 50V, 500mW
COIL A - 210 ±12½, 80mH
COIL B - 210 ±12½, 80mH

Figure 2: Divide by 1 SELECT Mode

Q1

Q2

Short

Circuit

Sense

Q3

Q4

Resistor

Resistor

Short

Circuit

Sense

Coil

Gnd

V

CC

Overvoltage

and

Short

Circuit

Protection

Part Number Description

CS4161XN8 8L PDIP

Thermal Data 8L PDIP

R

QJC

typ 52 ûC/W

R

QJA

typ 100 ûC/W

4

CS4161

D

Lead Count Metric English

Max Min Max Min

8L PDIP 10.16 9.02 .400 .355

Package Specification

PACKAGE DIMENSIONS IN mm (INCHES)

Ordering Information

PACKAGE THERMAL DATA

Rev. 1/28/97

© 1999 Cherry Semiconductor Corporation

Cherry Semiconductor Corporation reserves the
right to make changes to the specifications without
notice. Please contact Cherry Semiconductor
Corporation for the latest available information.

Plastic DIP (N); 300 mil wide

0.39 (.015)
MIN.

2.54 (.100) BSC

1.77 (.070)

1.14 (.045)

D

Some 8 and 16 lead
packages may have
1/2 lead at the end
of the package.
All specs are the same.

.203 (.008)

.356 (.014)

REF: JEDEC MS-001

3.68 (.145)

2.92 (.115)

8.26 (.325)

7.62 (.300)

7.11 (.280)

6.10 (.240)

.356 (.014)

.558 (.022)