Burr Brown Corporation DRV101T, DRV101F-500, DRV101F Datasheet

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©

1998 Burr-Brown Corporation PDS-1411B Printed in U.S.A. August, 1998

DRV101

®

PWM SOLENOID/VALVE DRIVER

DRV101

DRV101

FEATURES

● HIGH OUTPUT DRIVE: 2.3A

● WIDE SUPPLY RANGE: +9V to +60V

● COMPLETE FUNCTION

PWM Output
Internal 24kHz Oscillator
Digital Control Input
Adjustable Delay and Duty Cycle
Over/Under Current Indicator

● FULLY PROTECTED

Thermal Shutdown with Indicator
Internal Current Limit

● PACKAGES: 7-Lead TO-220 and 7-Lead

Surface-Mount DDPAK

APPLICATIONS

● ELECTROMECHANICAL DRIVER:

Solenoids Positioners
Actuators

High Power Relays/Contactors

Valves Clutch/Brake

● FLUID AND GAS FLOW SYSTEMS

● INDUSTRIAL CONTROL

● FACTORY AUTOMATION

● PART HANDLERS

● PHOTOGRAPHIC PROCESSING

● ELECTRICAL HEATERS

● MOTOR SPEED CONTROL

● SOLENOID/COIL PROTECTORS

● MEDICAL ANALYZERS

DESCRIPTION

The DRV101 is a low-side power switch employing a
pulse-width modulated (PWM) output. Its rugged de­sign is optimized for driving electromechanical de­vices such as valves, solenoids, relays, actuators, and
positioners. The DRV101 is also ideal for driving
thermal devices such as heaters and lamps. PWM
operation conserves power and reduces heat rise, re­sulting in higher reliability. In addition, adjustable
PWM allows fine control of the power delivered to the
load. Time from dc output to PWM output is exter­nally adjustable.

The DRV101 can be set to provide a strong initial
closure, automatically switching to a “soft” hold mode
for power savings. Duty cycle can be controlled by a
resistor, analog voltage, or digital-to-analog converter
for versatility. A flag output indicates thermal shut­down and over/under current limit. A wide supply
range allows use with a variety of actuators.

The DRV101 is available in 7-lead staggered TO-220
package and a 7-lead surface-mount DDPAK plastic
power package. It is specified over the extended indus­trial temperature range, –40°C to +85°C.

Delay

Adjust

Input

(TTL-Compatible)

On

Off

Thermal Shutdown

Over/Under Current

Flag

Load

Duty Cycle Adjust

VS (+9V to +60V)

24kHz

Oscillator

PWM

23

1

75

6

4

Gnd

Out

(electrically

connected to

tab)

Delay

2

®

DRV101

SPECIFICATIONS

At TC = +25°C, VS = +24V, Load = 100Ω || 1000pF, and 4.99kΩ Flag pullup to +5V, unless otherwise noted.

DRV101T, F
PARAMETER COMMENTS MIN TYP MAX UNITS
OUTPUT

Output Saturation Voltage, Sink I

O

= 1A +0.8 +1 V

I

O

= 0.1A +0.2 +0.3 V
Current Limit 1.9 2.3 3 A
Under-Scale Current

(1)

23 mA

Leakage Current Output Transistor Off, V

S

= VO = +60V ±0.01 ±1mA

DIGITAL CONTROL INPUT

(2)

V

CTR

Low (output disabled) 0 +1.2 V

V

CTR

High (output enabled) +2.2 +5.5 V

I

CTR

Low (output disabled) V

CTR

= 0V –80 µA

I

CTR

High (output enabled) V

CTR

= +5V 20 µA

Propagation Delay On-to-Off and Off-to-On 2 µs

DELAY TO PWM

(3)

dc to PWM Mode

Delay Equation

(4)

Delay to PWM ≈ CD • 106 (CD in F) s

Delay Time C

D

= 0.1µF 80 95 110 ms

Minimum Delay Time

(5)

CD = 0 15 µs

DUTY CYCLE ADJUST

Duty Cycle Range 10 to 90 %
Duty Cycle Accuracy 50% Duty Cycle, R

PWM

= 28.7kΩ±2 ±5%

vs Supply Voltage 50% Duty Cycle, V

S

= VO = +9V to +60V ±1 ±5%

Nonlinearity

(6)

10% to 80% Duty Cycle 2 % FSR

DYNAMIC RESPONSE

Output Voltage Rise Time V

O

= 10% to 90% of V

S

1 2.5 µs

Output Voltage Fall Time VO = 90% to 10% of V

S

0.1 2.5 µs

Oscillator Frequency 19 24 29 kHz

FLAG

Normal Operation 20kΩ Pull-Up to +5V, I

O

< 1.5A +4 +4.9 V

Fault

(7)

Sinking 1mA +0.2 +0.8 V

Sink Current V

FLAG

= 0.4V 2 mA

Under-Current Flag: Set 4 µs

Reset 2 µs

Over-Current Flag: Set 2 µs

Reset 2 µs

THERMAL SHUTDOWN

Junction Temperature

Shutdown +165 °C
Reset from Shutdown +150 °C

POWER SUPPLY

Specified Operating Voltage +24 V
Operating Voltage Range +9 +60 V
Quiescent Current I

O

= 0 3.5 5 mA

TEMPERATURE RANGE

Specified Range –40 +85 °C
Operating Range –55 +125 °C
Storage Range –65 +150 °C
Thermal Resistance,

θ

JC

7-Lead DDPAK, 7-Lead TO-220 3 °C/W

Thermal Resistance,

θ

JA

7-Lead DDPAK, 7-Lead TO-220 No Heat Sink 65 °C/W

NOTES:(1) Under-scale current for T

C

< 100°C—see Under-Scale Current vs Temperature typical performance curve. (2) Logic High enables output (normal
operation). (3) Constant dc output to PWM (pulse-width modulated) time. (4) Maximum delay is determined by an external capacitor. Pulling the Delay Adjust Pin
low corresponds to an infinite (continuous) delay. (5) Connecting the Delay Adjust pin to +5V reduces delay time to 3µs. (6) V

IN

at pin 3 to percent of duty cycle

at pin 6. (7) A fault results from over-temperature, over-current, or under-current conditions.

The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.

3

®

DRV101

CONNECTION DIAGRAMS

Top Front View TO-220, DDPAK

Supply Voltage, V

S

.............................................................................. 60V

Input Voltage .......................................................................... –0.2V to V

S

PWM Adjust Input .................................................................. –0.2V to V

S

Delay Adjust Input ................................................ –0.2V to VS (24V max)

Operating Temperature Range ...................................... –40°C to +125°C

Storage Temperature Range ......................................... –65°C to +150°C

Junction Temperature .................................................................... +150°C

Lead Temperature (soldering, 10s)

(2)

........................................... +300°C

NOTES: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may de­grade device reliability. (2) Vapor-phase or IR reflow techniques are recom­mended for soldering the DRV101F surface-mount package. Wave soldering
is not recommended due to excessive thermal shock and “shadowing” of
nearby devices.

ABSOLUTE MAXIMUM RATINGS

(1)

ELECTROSTATIC
DISCHARGE SENSITIVITY

This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and
installation procedures can cause damage.

ESD damage can range from subtle performance degradation to
complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes
could cause the device not to meet its published specifications.

7-Lead

Stagger-Formed

TO-220

NOTE: Tabs are electrically connected to ground (pin 4).

1234

5

6 7

7-Lead

DDPAK

Surface-Mount

PWM

PWM

Gnd Out

V

S

Delay

In

1234

5

6

Flag

Gnd Out

V

S

Delay

In

Flag

7

PACKAGE SPECIFIED
DRAWING TEMPERATURE PACKAGE ORDERING TRANSPORT

PRODUCT PACKAGE NUMBER

(1)

RANGE MARKING NUMBER

(2)

MEDIA

DRV101T 7-Lead Stagger-Formed TO-220 327 –40°C to +85°C DRV101T DRV101T Rails
DRV101F 7-Lead DDPak Surface Mount 328 –40°C to +85°C DRV101F DRV101F Rails

" " " " " DRV101F/500 Tape and Reel

NOTES: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. (2) Models with a slash (/ )
are available only in Tape and Reel in the quantities indicated (e.g., /500 indicates 500 devices per reel). Ordering 500 pieces of “DRV101F/500” will get a single
500-piece Tape and Reel. For detailed Tape and Reel mechanical information, refer to Appendix B of Burr-Brown IC Data Book.

PACKAGE/ORDERING INFORMATION

4

®

DRV101

PIN # NAME DESCRIPTION

Pin 1 Input The input is compatible with standard TTL levels. The device output becomes enabled when the input voltage is driven above

the typical switching threshold, 1.7V. Below this level, the output is disabled. With no connection to the pin, the input level rises
to 3.4V. Input current is 20µA when driven high and 80µA with the input low. The input may be momentarily driven to the power
supply (V

S

) without damage.

Pin 2 Delay Adjust This pin sets the duration of the initial 100% duty cycle before the output goes into PWM mode. Leaving this pin floating results

in a delay of approximately 15µs, which is internally limited by parasitic capacitance. Minimum delay may be reduced to less
than 3µs by tying the pin to 5V. This pin connects internally to a 3µA current source from V

S

and to a 3V threshold comparator.
When the pin voltage is below 3V, the output device is 100% on. The PWM oscillator is not synchronized to the Input (pin 1),
so the first pulse may be extended by any portion of the programmed duty cycle.

Pin 3 Duty Cycle Adjust Internally, this pin connects to the input of a comparator and a 19kΩ resistor to ground. It is driven by a 200µA current source

(PWM) from V

S

. The voltage at this node linearly sets the duty cycle. Duty cycle can be programmed with a resistor, analog voltage,
or output of a D/A converter. The active voltage range is from 0.75V to 3.7V to facilitate the use of single-supply control
electronics. At 0.75V (or R

PWM

= 3.5kΩ), duty cycle is near 90%. Swing to ground should be limited to no lower than 0.1V. PWM

frequency is a constant 24kHz.

Pin 4 Ground This pin is electrically connected to the package tab. It must be connected to system ground for the DRV101 to function. It

carries the 3.5mA quiescent current plus the load current when the device is on.

Pin 5 V

S

This is the power supply pin. Operating range is +9V to +60V.

Pin 6 Out The output is the collector of a power npn with the emitter connected to ground. Low power dissipation in the DRV101 is attained

by the low saturation voltage and the fast switching transitions. Fall time is less than 75ns, rise time depends on load
impedance. Base drive to the power device is limited with light loads to control turn-off delay. The response of this circuit causes
the brief dip in saturation voltage after turn on. A flyback diode is needed with inductive loads to conduct the load current during
the off cycle. The external diode should be selected for low forward voltage. The internal clamp diode provides protection but
shouuld not be used to conduct load currents greater than 0.5A.

Pin 7 Flag Normally high (active low), the Flag signals either an over-temperature, over-current, or under-current fault. The over/under-

current flags are true only when the output is on (constant dc output or the “on” portion of PWM mode). A thermal fault (thermal
shutdown) occurs when the die surface reaches approximately 165°C and latches until the die cools to 150°C. Its output
requires a pull-up resistor. It can typically sink two milliamps, sufficient to drive a low-current LED.

PIN DESCRIPTIONS

LOGIC BLOCK DIAGRAM

C

D

R

PWM

Input

On

Off

Over/Under Current

Flag

Load

VS (+9V to +60V)

Thermal

Shutdown

PWM

23

1

75

6

4

Gnd

Out

Delay

Schottky Power

Rectifier

5

®

DRV101

DUTY CYCLE vs TEMPERATURE

–75 –50 –25 0 25 50 75 100 125

Temperature (°C)

Duty Cycle (%)

100

80

60

40

20

0

R

PWM

= 6.04kΩ

R

PWM

= 30.1kΩ

R

PWM

= 100kΩ

R

PWM

= 301kΩ

R

PWM

= 750kΩ

TYPICAL PERFORMANCE CURVES

At TC = +25°C and VS = +24V, unless otherwise noted.

CURRENT LIMIT vs TEMPERATURE

–75 –50 –25 0 25 50 75 100 125

Temperature (°C)

Current Limit (mA)

2.6

2.4

2.2

2.0

1.8

1.6

VS = +9V to +60V

QUIESCENT CURRENT vs TEMPERATURE

–75 –50 –25 0 25 50 75 100 125

Temperature (°C)

Quiescent Current (mA)

3.9

3.7

3.5

3.3

3.1

VS = +60V

VS = +9V

VS = +24V

UNDER-SCALE CURRENT vs TEMPERATURE

–75 –50 –25 0 25 50 75 100 125

Temperature (°C)

Under-Scale Current (mA)

30

25

20

15

10

5

0

VS = +9V

Lines represent maximum current
before under-current Flag occurs.
Under-current Flag may not
occur for case temperature
above 100°C.

VS = +60V

VS = +24V

DUTY CYCLE and DUTY CYCLE ERROR vs VOLTAGE

0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

V

PWM

(V)

Duty Cycle (%)

Duty Cycle Error (%)

90
80
70
60
50
40
30
20
10

8
6
4
2
0
–2
–4
–6
–8

Duty Cycle

Load = 1A

Error

OUTPUT SATURATION VOLTAGE vs TEMPERATURE

–75 –50 –25 0 25 50 75 100 125

Temperature (°C)

Saturation Voltage (V)

2.5

2.0

1.5

1.0

0.5

0

IO = 2A

IO = 1A

IO = 1.5A

IO = 0.5A
IO = 0.1A

Effect of

Current-Limit

6

®

DRV101

TYPICAL PERFORMANCE CURVES (CONT)

At TC = +25°C and VS = +24V, unless otherwise noted.

V

OUT

FLAG OPERATION

OVER-CURRENT LIMIT

(VS = +60V, CD = 110pF, R

PWM

= 750kΩ)

FLAG OPERATION
UNDER-CURRENT

(V

S

= +24V, CD = 110pF, R

PWM

= 6.04kΩ)

No Load

2A
1A

0

V

OUT

DUTY CYCLE UNDERSHOOT

Load = 1A

DC TO PWM MODE

DRIVING INDUCTIVE LOAD

(VS = +60V, CD = 110pF, R

PWM

= 301kΩ)

30V
20V
10V

0
30V
20V
10V

0

V

OUT

TYPICAL SOLENOID CURRENT WAVEFORM

(VS = +24V)

50µs/div

Inductive load ramp current

See Duty Cycle Undershoot

curve for detail

25µs/div

60V
40V
20V

0V

I

GND

1µs/div

PWM Mode

Constant Output

Flag only on during constant output

or “ON” portion of PWM mode

4V
2V

0

4V
2V

0

V

IN

V

FLAG

50µs/div

1A

0.5A

0

25ms/div

PWM Mode

OSCILLATOR FREQUENCY vs TEMPERATURE

–75 –55 –35 –15 5 25 45 65 85 105 125

Temperature (°C)

Oscillator Frequency (kHz)

24.2

24.0

23.8

23.6

23.4

VS = +9V

VS = +60V

60V
40V
20V

0
4V
2V

0

V

FLAG

Onset of

current limit

Flag only set

during constant

output mode or
“ON” portion of

PWM mode

Clean Layout

Non-optimized Layout

V

OUT

Solenoid Closure

{

Solenoid

Motion
Period