ETC CS3720/D

CS3720
CS3720
2A H-Bridge Driver
Description
The CS3720 is high current (2A typ)
bidirectional DC motor driver. The
H-bridge output stage consists of
two pairs of power NPN transistors, each with a VSAT=2.3V at
IOUT=2A (typ).
The three TTL compatible inputs,
ENABLE1, ENABLE2, and DIRECTION control the output stage.
When ENABLE1 is low and
Features
ENABLE2 is high, DIRECTION
determines which way current
flows through the motor coil. Any
other combination of ENABLE settings disables the outputs.
The CS3720 is protected against
overvoltage fault conditions. If a
fault condition is detected, the IC
shuts down.
■ High Current (2A typ)
Output
■ TTL compatible
DIRECTION Control
■ Fault Protection
Overvoltage
Load Dump Protection to
74V
Absolute Maximum Ratings
DC Input Voltage ..................................................................................-0.3 to 28V
Transient Input Voltage ...................................................................... -0.3 to 74V
Internal Power Dissipation......................................................Internally limited
Junction Temperature Range .....................................................-40°C to +150°C
Storage Temperature Range.......................................................-65°C to +150°C
Lead Temperature Soldering
Wave Solder (through hole styles only) ............10 sec. max, 260°C peak
Reflow (SMD styles only) .............60 sec. max above 183°C, 230°C peak
Electrostatic Discharge (Human Body Model).............................................2kV
Package Options
7 Lead Power SIP
Block Diagram
2
ENABLE1
4
DIRECTION
6
COIL+
8
Gnd
10 COIL–
12 VSS
14 ENABLE2
VSS
VREF
Transient
Protection
DRIVE
ENABLE2
CONTROL
DIRECTION
LOGIC
Over
Current
Protection
Over
Current
Protection
Overvoltage
Protection
ENABLE1
Q3
Q1
OUTPUT
DRIVER
+
COIL +
7 Lead D2PAK
7 Lead TO-220
COIL -
OUTPUT
DRIVER
–
Q4
1
Q2
1
1
2
3
4
5
6
7
ENABLE1
DIRECTION
COIL+
Gnd
VSS
COIL–
ENABLE2
Gnd
ON Semiconductor
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885–3600 Fax: (401)885–5786
N. American Technical Support: 800-282-9855
Web Site: www.cherry–semi.com
May, 1999 - Rev. 4
1
CS3720
Electrical Characteristics: 5.5V ≤ VCC ≤ 17V; –40°C ≤ TJ ≤ +150°C; –40°C ≤ TC ≤ +105°C; –40°C ≤ TA ≤ 105°C; unless otherwise specified.
PARAMETER
■
TEST CONDITIONS
MIN
TYP
Quiescent Current
IOUT = 0mA;
ENABLE1 = DIRECTION = High
ENABLE2 = Low
10
mA
Output Saturation Voltage
IOUT = 2A
IOUT = 500mA
3.2
2.6
V
V
Output Leakage Current
IOUT = 0mA
20
µA
3.0
A
Logic Control Functions
High Level Input Voltage
2.0
V
Low Level Input Voltage
0.8
V
High Level Input Current
10
µA
Low Level Input Current
■
UNIT
Output Stage
Current Limit
■
MAX
-250
µA
Turn on Delay
Guaranteed by design
RLOAD = 30Ω; Coil = 5mH;
CLOAD = 15pF
5
Turn off Delay
Guaranteed by design
RLOAD = 30Ω; Coil = 5mH;
CLOAD = 15pF
5
50
µs
50
µs
21.5
V
Fault Protection Functions
IOUT = 500mA
Overvoltage Shutdown
18.0
Package Lead Description
PACKAGE LEAD#
LEAD SYMBOL
FUNCTION
15 Lead
Power SIP
7 Lead
TO-220
7 Lead
D2PAK
2
1
1
ENABLE1
Enables output when held low and ENABLE 2 = High
4
2
2
DIRECTION
Determines the direction of current flow through COIL+ and
COIL- as long as ENABLE1 = Low and ENABLE2 = High
6
3
3
COIL+
Positive Output of H bridge to coil
8
4
4
Gnd
Ground connection
12
5
5
VSS
Supply voltage for IC
10
6
6
COIL-
Negative Output of H bridge to coil
14
7
7
ENABLE2
Enables output when held high and ENABLE 1 = Low
Application Hints
Motor Direction Control
ENABLE1 ENABLE2
Current flow through the two outputs COIL+ and COILis controlled by the combined settings of ENABLE1,
ENABLE2 and DIRECTION (Table 1). The outputs will be
active only when ENABLE1 is low and ENABLE2 is high.
When DIRECTION is high, current flows out of COIL+
and into COIL-. When DIRECTION is low, current flows
out of COIL- and into COIL+. For any other combination
of ENABLE settings, the outputs are off.
DIRECTION
COIL+
COIL-
Low
High
High
High
Low
Low
High
Low
Low
High
High
X
X
OFF
OFF
X
Low
X
OFF
OFF
Table 1. Logical Control Diagram
2
CS3720
Application and Test Diagram
VSS
VSS
VSS
COIL +
D1
D1
LLOAD
5mH
CS3720
µP
I/O
ENABLE1
ENABLE2
DIRECTION
Gnd
RLOAD
30Ω
COIL -
CLOAD
0.1µF
D1
D1
D1 = IN4001
or equivalent
Note: A heatsink is required for 2A operation.
Figure 1. Delay Times for ENABLE and COIL
ENABLE2 = 2.4V
5V
ENABLE1
DIRECTION
50%
50%
0V
5V
0V
17V
COIL+
10%
0V
COIL–
17V
90%
0V
5V
ENABLE2
50µs
Turnoff
Delay
50µs
Turnoff
Delay
ENABLE1 = 0.4V
50%
50%
0V
5V
DIRECTION
COIL+
0V
17V
10%
0V
17V
COIL–
90%
0V
3
CS3720
Package Specification
PACKAGE DIMENSIONS IN mm (INCHES)
PACKAGE THERMAL DATA
Thermal Data
RΘJC typ
7 Lead D2PAK (DPS)* Short-Leaded
1.40 (.055)
1.14 (.045)
10.31 (.406)
10.05 (.396)
1.68 (.066)
1.40 (.055)
RΘJA
typ
7L
7L
D2PAK TO-220
2.1
2.1
10-50*
7L
Power SIP
2.1
°C/W
50
35
°C/W
*Depending on thermal properties of substrate. RΘJA=RΘJC + RΘCA.
8.53 (.336)
8.28 (.326)
2.79 (.110)
2.54 (.100)
14.71 (.579)
13.69 (.539)
7 Lead TO-220 (T) Straight
1.98 (.078)
1.47 (.058)
0.91 (.036)
0.66 (.026)
.254 (.010)
REF
1.27 (.050)
REF
TERMINAL 8
6.50 (.256) REF
10.54 (.415)
9.78 (.385)
4.57 (.180)
4.31 (.170)
7.75 (.305)
REF
4.83 (.190)
4.06 (.160)
1.40 (.055)
1.14 (.045)
2.87 (.113)
2.62 (.103)
0.10 (.004)
0.00 (.000)
6.55 (.258)
5.94 (.234)
14.99 (.590)
14.22 (.560)
3.96 (.156)
3.71 (.146)
*ON SEMICONDUCTOR SHORT-LEADED FOOTPRINT
14.22 (.560)
13.72 (.540)
7 Lead Power SIP (M) Straight
20.02 (.788)
0.94 (.037)
0.58 (.023)
1.40 (.055)
1.14 (.045)
0.64 (.025)
0.38 (.015)
0.56 (.022)
0.36 (.014)
17.50 (.689)
7.75 (.305)
7.49 (.295)
10.69 (.421)
1.1 (.043)
2.92 (.115)
2.29 (.090)
10.9 (.429)
0.79 (.031)
MAX.
2.54 (.100)
15.24 (.600)
Ordering Information
Part Number
CS3720XT7
CS3720XTVA7
CS3720XTHA7
CS3720XM7
CS3720XDPS7
CS3720XDPSR7
Description
7 Lead TO-220 Straight
7 Lead TO-220 Vertical
7 Lead TO-220 Horizontal
7 Lead Power SIP Straight
7 Lead D2PAK Short-Leaded
7 Lead D2PAK Short-Leaded
(tape & reel)
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4
© Semiconductor Components Industries, LLC, 2000