High-Frequency, High Side
and Low Side Gate Driver
NCV51511
The NCV51511 is high side and low side gate−drive IC designed for
high−voltage, high−speed, driving MOSFETs operating up to 80 V.
The NCV51511 integrates a driver IC and a bootstrap diode. The
driver IC features low delay time and matched PWM input
propagation delays, which further enhance the performance of the
part.
The high speed dual gate drivers are designed to drive both the
high−side and low−side of N−Channel MOSFETs in a half bridge or
synchronous buck configuration. The floating high−side driver is
capable of operating with supply voltages of up to 80 V. In the dual
gate driver, the high side and low side each have independent inputs to
allow maximum flexibility of input control signals in the application.
The PWM input signal (high level) can be 3.3 V, 5 V or up to VDD
logic input to cover all possible applications. The bootstrap diode for
the high−side driver bias supply is integrated in the chip. The
high−side driver is referenced to the switch node (HS) which is
typically the source pin of the high−side MOSFET and drain pin of the
low−side MOSFET. The low−side driver is referenced to VSS which is
typically ground. The functions contained are the input stages, UVLO
protection, level shift, bootstrap diode, and output driver stages.
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
Drives two N−Channel MOSFETs in High & Low Side
Integrated Bootstrap Diode for High Side Gate Drive
Bootstrap Supply Voltage Range up to 100 V
3 A Source, 6 A Sink Output Current Capability
Drives 1nF Load with Typical Rise/Fall Times of 6 ns/4 ns
TTL Compatible Input Thresholds
Wide Supply Voltage Range 8 V to 16 V (Absolute Maximum 18 V)
Fast Propagation Delay Times (Typ. 30 ns)
2 ns Delay Matching (Typical)
Under−Voltage Lockout (UVLO) Protection for Drive Voltage
Industry−Standard Pinouts, SOIC 8 with Exposed PAD
Automotive Qualified to AEC−Q100:
♦ Operating temperature range from −40°C to 150°C
♦ Reliability at 150°C for 2,016 hrs
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
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8
1
SOIC8−EP
CASE 751AC
MARKING DIAGRAM
8
V51511
ALYWG
G
1
V51511 = Specific Device Code
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
G
= Pb−Free Device
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 13 of this data sheet.
Typical Applications
• 48 V Converters for HEV/EV
• Half−Bridge and Full−Bridge Converters
• Synchronous−Buck Converters
© Semiconductor Components Industries, LLC, 2018
July, 2021 − Rev. 1
1
Publication Order Number:
NCV51511/D
NCV51511
TYPICAL APPLICATIONS
L
VDC
Supply Voltage
VDD
2
HB
3
HO
4
HS
CHB
NCV51511
RHGATE
1
CIN
L
LO
8
VSS
7
LI
6
HI
5
COUT
RLGATE
O
A
D
PWM
Controller
FEEDBACK
Figure 1. Application Schematic − Synchronous Buck Converter
VDC
SECONDARY
SIDE
CIRCUIT
RHGATE
6
LI
7
VSS
8
LO
HS
4
HO
3
HB
2
VDD
1
CHB
CIN
Supply Voltage
HI
NCV51511
PWM
Controller
5
RLGATE
ISOLATION
AND
FEEDBACK
Figure 2. Application Schematic − Half Bridge Converter
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2
NCV51511
BLOCK DIAGRAM
V DD 1
2 HB
UVLO
HI
LI
V SS
5
3
HO
4
HS
8
LO
LEVEL
SHIFT
6
UVLO
7
Figure 3. Simplified Block Diagram
PIN CONNECTIONS
NCV51511
V DD
1
HB
2
8
LO
7
V SS
Thermal Pad
HO
3
6
LI
HS
4
5
HI
Figure 4. Pin Assignments − SOIC8−EP (Top View)
Table 1. PIN DESCRIPTION
Pin No.
Pin Name
Description
1
VDD
Logic and low−side gate driver power supply voltage
2
HB
High−side floating supply
3
HO
High−side driver output
4
HS
High−voltage floating supply return
5
HI
Logic input for High−side gate driver output
6
LI
Logic input for Low−side gate driver output
7
VSS
Logic Ground
8
LO
Low−side driver output
−
Exposed PAD
Can either be left open or connected to VSS. We recommend EPAD to be connected to
VSS plane for improved thermal performance.
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NCV51511
Table 2. MAXIMUM RATINGS
All voltage parameters are referenced to VSS, unless otherwise noted.
Symbol
Parameter
Min.
Max.
Units
−0.3
18
V
−1
100
V
−(24 – VDD)
100
V
−0.3
VDD + 0.3
V
−2
VDD + 0.3
V
VHS – 0.3
VHB + 0.3
V
VHS – 2
VHB + 0.3
V
Logic Input Voltage
−0.3
VDD + 0.3
V
High−Side Floating Supply Voltage
−0.3
100
V
VHB – VHS
VHS to VHB Supply Voltage
−0.3
18
V
PD
Power Dissipation (Note 3)
2.5
W
TJ,
Operating Junction Temperature
150
°C
VDD
Low−Side and Logic Fixed Supply Voltage
VHS
High−Side Floating Supply Offset Voltage(Note 1)
Repetitive Pulse (< 100 ns)(Note 2)
VLO
Low−Side Output Voltage, LO Pin
Repetitive Pulse (< 100 ns)(Note 2)
VHO
High−Side Floating Output Voltage, HO Pin
Repetitive Pulse (< 100 ns)(Note 2)
VLI, VHI
VHB
−55
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. The VHS negative voltage capability can be calculated using (VHB –VHS)−18 V base on VHB, due to its dependence on VDD voltage level.
2. Verified at bench characterization.
3. JEDEC standard: JESD51−2, JESD51−3. Mounted on 76.2 x 114.3 x1.6 mm PCB (FR−4 glass epoxy material).
Table 3. ESD AND MSL
Symbol
ESDHBM
Parameters
Electrostatic Discharge Capability
ESDCDM
MSL
Value
Unit.s
Human Body Model,per AEC Q100−002
2000
V
Charged Device Model, AEC Q100−011
1000
Moisture Sensitivity Level
2
Level
Value
Units
Table 4. THERMAL INFORMATION (Note 4)
Symbol
Parameter
qJA
Thermal Resistance Junction−Air (Note 4)
39
°C/W
yJL
Thermal characterization parameter Junction−Lead
15
°C/W
yJT
Thermal characterization parameter Junction−Case (TOP)
6
°C/W
4. As mounted on a 76.2 x 114.3 x 1.6 mm FR4 substrate with a Multi−layer of 1 oz copper traces and heat spreading area. As specified for
a JEDEC 51−7 conductivity test PCB. Test conditions were under natural convection or zero air flow
Table 5. RECOMMENDED OPERATING RANGES
All voltage parameters are referenced to VSS
Symbol
Parameters
VDD
Supply Voltage
VHS
High Side Floating Return
VHB
dVSW/dt
TJ
Test Condition
Min.
Max.
Units
DC
8
16
V
DC
−1
80
V
Repetitive Pulse (< 100 ns)
−(24 – VDD)
100
V
DC
VHS + 8
VHS + 16
V
50
V/ns
−40
150
°C
Voltage on HB
Voltage Slew Rate on SW
Operating Temperature
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
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4
NCV51511
Table 6. ELECTRICAL CHARACTERISTICS
VDD = VHB = 12 V, VHS = VSS = 0 V, TA = TJ = −40°C to 150°C, no load on HO or LO, unless otherwise noted.
Symbol
Parameters
Test Condition
Min.
Typ.
Max.
Units
Power Supply Section
IDD
VDD Quiescent Current
VHI = 0 V; VLI = 0 V
0.17
0.3
mA
IDDO
VDD Operating Current
fSW = 500 kHz
1.5
3.0
mA
IHB
HB Quiescent Current
VHI = 0 V; VLI = 0 V
0.1
0.2
mA
IHBO
HB Operating Current
fSW = 500 kHz
1.9
3.0
mA
IHBS
HB to VSS Quiescent Current
VHS = VHB = 80 V
IHBSO
HB to VSS Operating Current
fSW = 500 kHz
VDDR
VDD UVLO Threshold
VDD Rising
6.2
VDDH
VDD UVLO Hysteresis
VHBR
HB UVLO Threshold
HB Rising
5.5
VHBH
HB UVLO Hysteresis
0
10
mA
0.3
1.0
mA
6.8
7.4
V
0.6
6.3
V
7.2
0.4
V
V
Input Logic Section
VIH
High Level Input Voltage Threshold
1.80
2.2
2.50
V
VIL
Low Level Input Voltage Threshold
1.3
1.7
2.0
V
VIHYS
RIN
Input Logic Voltage Hysteresis
0.5
V
Input Pull−down Resistance
100
kW
Bootstrap Diode
VFL
Forward Voltage @ Low Current
IVDD−HB = 100 mA
0.55
0.8
V
VFH
Forward Voltage @ High Current
IVDD−HB = 100 mA
0.8
1.0
V
RD
Dynamic Resistance
IVDD−HB = 100 mA
0.7
1.5
W
tBS (Note 5)
Diode Turn−off Time
IF = 20 mA, IREV = 0.5 A
20
VOLL
Low Level Output Voltage
ILO = 100 mA
0.06
0.15
V
VOHL
High Level Output Voltage
ILO = −100 mA, VOHL = VDD − VLO
0.16
0.28
V
IOHL (Note 5)
Peak Pull−up Current
VLO = 0 V
3
IOLL (Note 5)
ns
Low Side Driver
A
Peak Pull−down Current
VLO = 12 V
6
A
tR_LO
LO Rise Time
10% to 90%, CLOAD = 1 nF
6
ns
tF_LO
LO Fall Time
90% to 10%, CLOAD = 1 nF
4
tR_LO1
LO Rise Time
3 V to 9 V, CLOAD = 100 nF
300
500
ns
ns
tF_LO1
LO Fall Time
9 V to 3 V, CLOAD = 100 nF
140
300
ns
tLPHL
LI = Low Propagation Delay
VLI Falling to VLO Falling, CLOAD = 0
28
45
ns
tLPLH
LI = High Propagation Delay
VLI Rising to VLO Rising, CLOAD = 0
30
47
ns
VOLH
Low Level Output Voltage
IHO = 100 mA
0.06
0.15
V
VOHH
High Level Output Voltage
IHO = −100 mA, VOHH = VHB − VHO
0.16
0.28
V
IOHH (Note 5)
Peak Pull−up Current
VHO = 0 V
3
A
IOLH (Note 5)
Peak Pull−down Current
VHO = 12 V
6
A
tR_HO
HO Rise Time
10% to 90%, CLOAD = 1 nF
6
ns
tF_HO
HO Fall Time
90% to 10%, CLOAD = 1 nF
4
ns
tR_HO1
HO Rise Time
3 V to 9 V, CLOAD = 100 nF
300
500
ns
tF_HO1
HO Fall Time
9 V to 3 V, CLOAD = 100 nF
140
300
ns
tHPHL
HI = Low Propagation Delay
VHI Falling to VHO Falling, CLOAD = 0
28
45
ns
tHPLH
HI = High Propagation Delay
VHI Rising to VHO Rising, CLOAD = 0
30
47
ns
High Side Driver
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NCV51511
Table 6. ELECTRICAL CHARACTERISTICS
VDD = VHB = 12 V, VHS = VSS = 0 V, TA = TJ = −40°C to 150°C, no load on HO or LO, unless otherwise noted.
Symbol
Parameters
Test Condition
Min.
Typ.
Max.
Units
Delay Matching
tMON
HI Turn−OFF to LI Turn−ON
2
10
ns
tMOFF
LI Turn−OFF to HI Turn−ON
2
10
ns
50
ns
Minimum Pulse Width
tPW
Minimum Pulse Width for HI and LI
(Note 5)
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
5. These parameters are guaranteed by design.
TYPICAL CHARACTERISTICS
Typical characteristics are provided at 25°C and VDD,
VHB = 12 V unless otherwise noted.
Figure 5. Quiescent Current vs. Temperature
Figure 6. Quiescent Current vs. VDD (VHB)
Figure 7. Operating Current vs. Temperature
Figure 8. IDD Operating Current vs. Frequency
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NCV51511
TYPICAL CHARACTERISTICS
Figure 9. IHB Operating Current vs. Frequency
Figure 10. Input Threshold vs. Temperature
Figure 11. Input Threshold vs. VDD
Figure 12. VDD UVLO Threshold vs. Temperature
Figure 13. VHB UVLO Threshold vs. Temperature
Figure 14. Bootstrap Diode VF vs. Temperature
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NCV51511
TYPICAL CHARACTERISTICS
Figure 16. VOH, VOL Voltage vs. VDD (VHB)
Figure 15. VOH, VOL Voltage vs. Temperature
Figure 17. Low Side Propagation Delay vs.
Temperature
Figure 18. High Side Propagation Delay vs.
Temperature
Figure 19. Low Side Propagation Delay vs. VDD
Figure 20. High Side Propagation Delay vs. VHB
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NCV51511
TYPICAL CHARACTERISTICS
Figure 21. HO, LO Peak Source Current vs. Supply
Voltage
Figure 22. HO, LO Peak Sink Current vs. Supply
Voltage
Figure 23. Bootstrap Diode Forward Voltage vs.
Temperature
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NCV51511
Switching Time Definitions
Figure 23 shows the switching time waveforms
definitions of the turn on and off propagation delay times.
HIN
(LIN)
50%
50%
tHPLH
tLPLH
tHPHL
tLPHL
90%
LIN
HIN
90%
LO
50%
HO
(LO)
50%
10%
10%
HO
tF
tR
tMON
tMOFF
Figure 24. Timing Diagrams
Input to Output Definitions
Figure 24 shows an input to output timing diagram for
overall operation.
VDD UVLO period
VDD
VDD UVLO threshold voltage : Typ. 6.8 V
VDD UVLO Hysteresis
HB UVLO period
HB
HI
HB UVLO threshold voltage : Typ. 6.3 V
VDD UVLO Hysteresis
PWM Input Threshold
PWM Input Threshold
LI
HO
LO
Figure 25. Overall Operation Timing Diagram
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10
NCV51511
APPLICATIONS INFORMATION
differential voltage is below the specified threshold. The HB
UVLO rise threshold is 6.3 V with 0.4 V hysteresis.
The NCV51511 is designed to drive high side and the low
side N−channel power MOSFETs in a half bridge or
synchronous buck. The driver IC integrates a bootstrap
diode for high side driver bias supply. High side and Low
side outputs are independently controlled by each of input
control signals with TTL or logic compatibility. The floating
high side driver can operate with supply voltage up to 80 V.
The NCV51511 functions consist of the input stage, level
shift, bootstrap diode, Under−Voltage Lockout (UVLO)
protection and output stage. The UVLO function is included
in both the high−and low side.
Output Stage
The NCV51511 output stage is able to Sink/Source
3.0 A /6.0 A typical which can effectively charge and
discharge a 1 nF load in few ns. High−speed switching, low
resistance and high current capability of both high side and
low side drivers allow for efficient switching operation. The
low side driver is referenced from VDD to VSS and the high
side is referenced from HB to HS. The device logic status
shows as below.
Input Stage
Table 7. DEVICE LOGIC STATUS
The input pins (HI,LI) of gate driver devices are based on
a TTL compatible input threshold logic that is independent
of the VDD supply voltage. The PWM input signal (high
level) can be 3.3 V, 5 V or up to VDD logic input to
accommodate all possible applications. The input
impedance of the NCV51511 is 100 kW nominal. The
100 kW is a pull−down resistance to ground (GND). The
logic level compatible input provides a 2.2 V rising
threshold and a 1.7 V falling threshold.
Status
Level Shift
HI
LI
HO
LO
L
L
L
L
L
H
L
H
H
L
H
L
H
H
H
H
X
X
L
L
Select Bootstrap Capacitor
The level shift circuit is the interface from the high side
input to the high side driver stage which is referenced to the
switch node (HS). The level shift allows control of the HO
output referenced to the HS pin and provides excellent delay
matching with the low side driver.
To control the high side output drive utilizes a widely used
technique for high side level shifter circuit so called pulsed
latch level translators.
The maximum allowable voltage drop across the
bootstrap capacitor to ensure enough gate−source voltage is
highly dependent to the internal under−voltage Lockout
level of the gate drive IC, and the voltage level at the source
connection of switching node HS. The maximum allowable
drop voltage can be obtained by (eq.1)
DV HB + V DD * V f * V HB,UVLO
(eq. 1)
Where:
Bootstrap Diode
• VDD: Gate drive IC supply voltage
• Vf : Static forward voltage drop of bootstrap diode
• VHB,UVLO: HB Under−Voltage Lockout level
The NCV51511 integrates a high voltage bootstrap diode
to generate the high side bias. It is provided to charge high
side gate drive bootstrap capacitor. The diode anode is
connected to VDD and cathode connected to HB. The boot
capacitor should be connected externally to HB and the HS
pins, the HB capacitor charge is refreshed every switching
cycle when HS transitions to ground. The bootstrap diode
provides fast recovery times, and a low resistance value of
0.7 W typ.
The total charge (QBS) required by the bootstrap capacitor
can be calculated by summing the Qg of the MOSFET and
the charge required for the level shifter in the gate drive IC
which is negligible quantity to compared Qg of the
MOSFET.
Q BS + Q g ) (I HBS
Under−Voltage Lockout (UVLO)
Both high side and low side drivers have independent
UVLO protections which monitor the VDD supply voltage
and HB bootstrap voltage. The function of the UVLO
circuits is to ensure that there are enough supply voltages
(VDD and HB) to correctly bias high side and low side
circuits. This also ensures that the gate of external
MOSFETs are driven at an optimum voltage. The VDD
UVLO disables both high side and low side drivers when
VDD is below the specified threshold. The rise VDD
threshold is 6.8 V with 0.6 V hysteresis. The HB UVLO
disables only the high side driver when the HB to HS
•
•
•
•
T ON)
(eq. 2)
Where:
QBS: Total gate charge of bootstrap capacitor
Qg: Gate charge of the MOSFET
IHBS: Quiescent current in High side gate drive IC.
TON: Turning−on time of high−side MOSFET
The guiding criteria for calculating the minimum required
bootstrap capacitance can be obtained through (eq.3).
C BOOT.MIN w
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11
Q BS
DV HB
(eq. 3)
NCV51511
Select External Bootstrap Series Resistor
The NCV51511 utilizes high−speed gate driving for
synchronous buck and half bridge applications. In these
applications, voltage ringing can be generated by parasitic
inductance of the primary power path, consisting of the input
capacitor and switching MOSFETs (Coss).
To reduce this ringing phenomenon, the first step is to
optimize the PCB layout to reduce parasitic components of
the power path. The second step is to add a series resistor
with the bootstrap capacitor to slow down the turn−on
transition of the high side MOSFET.
Bias Supply
Input
Supply
HB
RB
Bootstrap
Diode
HS
Driver
•
•
•
•
•
•
•
•
•
LHS− D
CIN
HO
LHS− S
HS
L
LCIN
LHS− D
LS
Driver
LS
COSS
GND
VOUT
L
O
A
D
I OLH +
V DD * V f * V OLH
R gate
I OHL +
V DD * V OHL
R gate
I OLL +
V DD * V OLL
R gate
(eq. 5)
Where:
IOHH: High side peak source current
IOLH: High side peak sink current
IOHL: Low side peak source current
IOLL: Low side peak sink current
Vf : Bootstrap diode forward voltage drop
VOHH: High level output voltage drop (high side)
VOLH: Low level output voltage drop (high side)
VOHL: High level output voltage drop (low side)
VOLL: Low level output voltage drop (low side)
The total power dissipation is the sum of the gate driver
losses and the bootstrap diode losses. The gate driver losses
are:
• The static and dynamic losses related to the switching
frequency
• Output load capacitance losses on high and low side
drivers
• Internal consumption supply voltage, VDD
The static losses are due to the quiescent current from the
voltage supplies VDD and ground in low side driver and the
leakage current in the level shifting stage in high side driver,
which are dependent on the voltage supplied on the HS pin
and proportional to the duty cycle when only the high side
power device is turned on. The quiescent current is
consumed by the device through all internal circuits such as
input stage, reference voltage, logic circuits, protections,
and also any current associated with switching of internal
devices when the driver output changes state. The effect of
the static losses within the gate driver can be safely assumed
to be negligible thanks to the NCV51511 low 0.17 mA
quiescent current.
The dynamic losses are defined as follows: In the low side
driver, the dynamic losses are due to two different sources.
One is due to whenever a load capacitor is charged or
discharged through a gate resistor, half of the energy that
Figure 26 shows the synchronous buck with the parasitic
component at the power path. Each of parasitic inductance
and low side COSS of MOSFET made up the ringing
phenomenon at the HS node, when the high side turns on.
When the bootstrap series resistor RB installed with
bootstrap capacitor, the bootstrap resistor limits the current
available to charge the gate of the high side MOSFET,
increasing the time needed to turn the high side MOSFET
on. The increased switching time slows the HS node rate of
rising and can have a significant impact on the peak voltage
on the HS node.
We recommend selecting less than 10 W for RB.
V DD * V f
RB
V DD * V f * V OHH
R gate
Gate Driver Power Dissipation
LHS− S
Figure 26. Application Circuit with Parasitic
Components
I BOOT(PEAK) +
I OHH +
(eq. 4)
Select Gate Resistor
The gate resistor is also sized to reduce a ringing voltage
of the HS node by parasitic inductances and capacitances.
But, it limits the current capability of the gate driver output
by the resistance value. The limited current capability value
by the gate resistor can be obtained (eq.5).
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12
NCV51511
• The gate driver should be located as close as possible of
goes into the capacitance is dissipated in the resistor. The
losses in the gate driver resistance, internal and external to
the gate driver, and the switching losses of the internal
CMOS circuitry. The dynamic losses of the high side driver
also have two different sources. One is due to the level
shifting circuit and the other is to the charging and
discharging of the capacitance of the high side. The static
losses are neglected here because the total IC power
dissipation is mainly dynamic losses of gate drive IC and can
be estimated as:
P DGATE + 2
CL
fS
•
•
•
2
V DD [W]
•
(eq. 6)
The bootstrap circuit power dissipation is the sum of the
bootstrap diode losses and the bootstrap resistor losses if any
exist. The bootstrap diode loss is the sum of the forward bias
power loss that occurs while charging the bootstrap
capacitor and the reverse bias power loss that occurs during
reverse recovery. Since each of these events happens once
per cycle, the diode power loss is proportional to switching
frequency. Larger capacitive loads require more current to
recharge the bootstrap capacitor, resulting in more losses.
switching MOSFET.
The VDD capacitor and bootstrap capacitor should be
located as near as possible to the device.
In order to reduce a ringing voltage of the HS node, the
space between high side source and low side drain of
the MOSFET should be small as possible.
The exposed pad should be connected to GND plane
and use at least four or more vias for improved thermal
performance.
Avoid driver input pulse signal close to the HS node.
One of recommendation layout pattern for the driver is
shown in Figure 27.
VDD
2
HB
3
HO
4
HS
NCV51511
1
LO
8
VSS
7
LI
6
HI
5
PCB Layout Guideline
NCV51511 is a high speed and high current high side and
low side driver. To avoid any device malfunction during
device operation, it is very important that there is very low
parasitic inductance in the current switching path. It is very
important that the best layout practices are followed for the
PCB layout of the NCV51511. The following should be
considered before beginning a PCB layout using the
NCV51511.
Figure 27. Layout Recommendation
ORDERING INFORMATION
Device
NCV51511PDR2G
Output Configuration
Temperature Range (5C)
Package
Shipping†
High Side and Low Side
−40 to 150
SOIC8−EP
(Pb−Free)
Tape & Reel
†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
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13
MECHANICAL CASE OUTLINE
PACKAGE DIMENSIONS
SOIC−8 EP
CASE 751AC
ISSUE D
8
1
SCALE 1:1
DATE 02 APR 2019
GENERIC
MARKING DIAGRAM*
8
XXXXX
AYWWG
G
1
DOCUMENT NUMBER:
DESCRIPTION:
XXXXXX = Specific Device Code
A
= Assembly Location
Y
= Year
WW
= Work Week
G
= Pb−Free Package
98AON14029D
SOIC−8 EP
*This information is generic. Please refer to
device data sheet for actual part marking.
Pb−Free indicator, “G” or microdot “ G”, may
or may not be present and may be in either
location. Some products may not follow the
Generic Marking.
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