NCV7702B
1 A Dual H-Bridge Driver
This dual full-bridge driver IC is intended for 14 V automotive
stepper and DC motor applications. Its four half-bridge outputs are
configured as two channels and are programmed by six TTL
compatible inputs, allowing flexible control of bridge operation. The
device operates in standby mode, run mode, or brake mode and
typically consumes less than 1
mA
while in standby. In run mode,
each half-bridge output can deliver load current in either direction.
Brake mode activates the low side transistors or high side transistors
at the selected outputs. On-chip recirculation diodes are provided,
and the IC has multiple fault protection modes. Overcurrent
detection protects against shorted loads between outputs and shorts
to supply or ground at each output. An overcurrent fault condition
activates an internal timer, which modulates faulted outputs at low
duty cycle. An overcurrent condition in one channel does not affect
operation in the other. Overvoltage and overtemperature detection
are also provided, and turn off all bridge outputs during these fault
conditions. Recovery from all fault conditions is automatic; the IC
will resume normal operation in its previously selected mode upon
fault resolution. Diagnostic ability is provided by two open-collector
STATUS outputs which report the fault status of each channel
independently during overcurrent faults, and together during
overvoltage or overtemperature faults.
Features
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SO-24L
DW SUFFIX
CASE 751E
1
24
MARKING DIAGRAM
24
NCV7702B
AWLYYWWG
1
A
WL
YY
WW
G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb-Free Device
•
Single 7 V-16 V Supply
•
Low Standby Current:
•
•
•
•
•
♦
PIN CONNECTIONS
VB1
OUT1B
OUT1A
STATUS1
PGND
PGND
PGND
PGND
IN1A
IN1B
AGND
EN1
1
24
VB2
OUT2B
OUT2A
STATUS2
PGND
PGND
PGND
PGND
IN2A
IN2B
CT
EN2
•
•
•
•
•
< 1.0
mA
Typically
3.3 V / 5 V Compatible Inputs
Independent Channel Enable
Channels Configurable as:
♦
Full-Bridge Drive
♦
Half-Bridge, High Side or Low Side Drive
On-Chip Recirculation Diodes
Fault Protection with Automatic Recovery for:
♦
Overcurrent
♦
Overvoltage
♦
Overtemperature
Fault Diagnostic STATUS Outputs
Internally Fused Leads in SO–24L Package
AEC Qualified
PPAP Capable
These are Pb-Free Devices*
ORDERING INFORMATION
Device
NCV7702BDWG
Package
SO-24L
(Pb-Free)
Shipping†
31 Units/Rail
NCV7702BDWR2G
Applications
♦
♦
♦
•
Automotive and Industrial Driver for:
DC or Stepper Motors
Relays or Solenoids
Unipolar or Bipolar Loads
SO-24L 1000 Tape & Reel
(Pb-Free)
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
*For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting
Techniques Reference Manual, SOLDERRM/D.
©
Semiconductor Components Industries, LLC, 2007
1
October, 2007 - Rev. 1
Publication Order Number:
NCV7702B/D
NCV7702B
STATUS1
OUT1A
VB1
OUT1B
Overvolt.
Bandgap
Regulator
Overtemp.
OUT2A
VB2
OUT2B
STATUS2
VBG
OV
OT
OC
VBG
OC
Half-Bridge Control
Half-Bridge Control
Overcurrent
Duty Cycle
OC
OC
OV
OT
OV
OT
PGND PGND PGND PGND EN1 IN1A IN1B
CT
AGND
IN2B IN2A EN2 PGND PGND PGND PGND
Figure 1. Block Diagram
MAXIMUM RATINGS
Rating
Power Supply Voltage, VB
Peak Transient Voltage (46 V Load Dump @ VB = 14 V)
Logic Inputs & Status Outputs
Junction Temperature, T
J
Storage Temperature Range
Package Thermal Resistance:
Junction-to-Case, R
qJC
Junction-to-Ambient, R
qJA
ESD Capability
Human Body Model
Machine Model
Value
-0.5 to 30
60
-0.3 to 7.0
150
-65 to 150
9
55
2.0
200
260 peak
3
Unit
V
V
V
°C
°C
°C/W
°C/W
kV
V
°C
-
Peak Reflow Soldering Temperature (60 to 150 seconds at 217°C) (Note 1)
Moisture Sensitivity Level (MSL)
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting
Techniques Reference Manual, SOLDERRM/D.
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2
Half-Bridge Control
Half-Bridge Control
NCV7702B
ELECTRICAL CHARACTERISTICS
(7.0 V
v
VB
v
16 V, -40°C
v
T
J
v
125°C; unless otherwise specified.) Notes 2 and 3.
Characteristic
General Characteristics
Quiescent Current
Standby Mode, VB
≤
12.8 V
Run Mode, I
OUT
= 750 mA, Both Channels
-
-
1.0
-
10
40
mA
mA
Test Conditions
Min
Typ
Max
Unit
Logic Inputs
High Level Input Voltage, V
IH
Low Level Input Voltage, V
IL
IN
X
Input Current
EN
X
Input Current
EN
X
Delay, t
PE
Status Outputs
Saturation Voltage, V
SL
Leakage Current
Half-Bridge Driver Outputs
Total Output Saturation Voltage
Output Saturation Voltage High
Output Saturation Voltage Low
Output Leakage
Overcurrent Threshold, I
OC
Overcurrent Duty Cycle
Switching Delay, t
PI
Sink to Source
Source to Sink
Dead Band Time, t
DB
Recirculation Diode Forward Voltage
Delay Timer
Charge Current, I
CHG
Discharge Current, I
DCH
Input Threshold High, V
CH
Input Threshold Low, V
DC
Global Fault Protection
Overtemperature Detection Threshold
Overtemperature Hysteresis
Overvoltage Detection Threshold
Overvoltage Hysteresis
Note 7
Note 7
Note 8
-
150
-
26
500
-
15
28
850
210
-
30
1200
°C
°C
V
mV
-
-
-
-
-85
1.25
1.85
200
-65
2.0
2.0
300
-45
3.25
2.15
400
mA
mA
V
mV
I
OUT
= 750 mA, Each Channel
I
OUT
= 750 mA, VB - V
OUT
, Each Driver
I
OUT
= 750 mA, V
OUT
- V
PGND
, Each Driver
V
OUT
= VB
V
OUT
= V
PGND
Low Side, Each Channel
High Side, Each Channel
470 pF
≤
C
T
≤
1500 pF; Note 5
50% of IN
X
to 60% of OUT
X
; Note 6
50% of IN
X
to 40% of OUT
X
; Note 6
Note 6
I
DIODE
= 750 mA
-
-
-
-
-5.0
0.9
0.775
3.0
0.20
0.20
0.10
-
2.5
1.25
1.25
0
0
1.25
0.900
4.0
-
-
-
-
3.0
1.6
1.6
5.0
-
1.6
1.10
6.0
14
10
10
2.5
ms
V
V
V
V
mA
mA
A
%
ms
I
STATUS
= 4.0 mA
V
STATUS
= 5.0 V
-
-
-
-
0.4
10
V
mA
V
IN
= 5.0 V
V
IN
= 0 V
V
IN
= 5.0 V
V
IN
= 0 V
50% of EN
X
to 50% of OUT
X
; Note 4 Turn ON
Turn Off
-
-
2.0
-
-
-5.0
-
-5.0
-
-
-
-
0
0
130
0
-
-
-
0.8
5.0
-
200
5.0
25
60
V
V
mA
mA
mA
mA
ms
2. Designed to meet these characteristics over the stated voltage and temperature recommended operating ranges, though may not be 100%
parametrically tested in production.
3. Operation is guaranteed down to VB = 6.0 V. Electrical characteristics may be outside the limits at that voltage.
4. See Figures 2 and 3; VB = 14 V, R = 100
W.
5. C
T
must remain in this range to guarantee proper operation, and to ensure part integrity, during hard short conditions.
6. See Figures 2 and 4; VB = 14 V, R = 100
W.
7. Guaranteed by design.
8. Consult factory for no overvoltage detection or lower overvoltage detection threshold options.
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3
NCV7702B
PACKAGE PIN DESCRIPTION
PACKAGE PIN #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
PIN SYMBOL
VB1
OUT1B
OUT1A
STATUS1
PGND
PGND
PGND
PGND
IN1A
IN1B
AGND
EN1
EN2
CT
IN2B
IN2A
PGND
PGND
PGND
PGND
STATUS2
OUT2A
OUT2B
VB2
FUNCTION
Power supply input voltage; overvoltage detection occurs at this pin.
Half-bridge output controlled by IN1B.
Half-bridge output controlled by IN1A.
Diagnostic output; reports channel #1 fault condition.
Power supply return.
Power supply return.
Power supply return.
Power supply return.
Logic level input.
Logic level input.
Analog supply return; reference for external C
T
capacitor, device substrate.
Enable for OUT1A and OUT1B.
Enable for OUT2A and OUT2B.
External capacitor; sets overcurrent delay time and duty cycle.
Logic level input.
Logic level input.
Power supply return.
Power supply return.
Power supply return.
Power supply return.
Diagnostic output; reports channel #2 fault condition.
Half-bridge output controlled by IN2A.
Half-bridge output controlled by IN2B.
Power supply input voltage.
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4
NCV7702B
INPUT LOGIC TABLE
EN1 = EN2 = 0 = Standby Mode
Channel #1
EN1
1
1
1
1
0
NOTE:
IN1A
0
0
1
1
X
IN1B
0
1
0
1
X
OUT1A
Low
Low
High
High
|Z|
OUT1B
Low
High
Low
High
|Z|
Mode
Brake Low
Run
Run
Brake High
Off
EN2
1
1
1
1
0
IN2A
0
0
1
1
X
IN2B
0
1
0
1
X
Channel #2
OUT2A
Low
Low
High
High
|Z|
OUT2B
Low
High
Low
High
|Z|
Mode
Brake Low
Run
Run
Brake High
Off
X = Don't Care; |Z| = Output Off.
STATUS OUTPUT TABLE
STATUS1
1
0
1
0
STATUS2
1
1
0
0
No Fault.
Channel 1 Overcurrent; Note 9
Channel 2 Overcurrent; Note 9
Overvoltage, Overtemperature or Overcurrent in Both Channels; Notes 9 and 10
Fault Diagnostic
9. During overcurrent, the STATUS outputs will be modulated at the overcurrent duty cycle rate. See Figure 5.
10. During overtemperature, the STATUS outputs will be modulated by the thermal time constants.
+14 V
1
24
VB1
R
OUT
X
R
OUT1B
OUT1A
STATUS1
PGND
VB2
OUT2B
OUT2A
STATUS2
PGND
PGND
PGND
NCV7702B
PGND
PGND
PGND
IN
X
IN1A
IN1B
AGND
12
PGND
IN2A
IN2B
CT
13
EN
X
EN1
EN2
Figure 2. Propagation Delay and Dead Band Timing Test Circuit
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5
能源基础设施
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