ON FAN3214TMX Dual-4 a, high-speed, low-side gate driver Datasheet

Features
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4.5 to 18 V Operating Range
5 A Peak Sink/Source at V DD = 12 V
4.3 A Sink / 2.8 A Source at V OUT = 6 V
TTL Input Thresholds
Tw o Versions of Dual Independent Drivers:
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Description
Industry-Standard Pin Out
Dual Inverting (FAN3213)
Dual Non-Inverting (FAN3214)
Internal Resistors Turn Driver Off If No Inputs
MillerDrive™ Technology
12 ns / 9 ns Typical Rise/Fall Times w ith 2.2 nF
Load
Typical Propagation Delay Under 20 ns Matched
w ithin 1 ns to the Other Channel
Double Current Capability by Paralleling Channels
Standard SOIC-8 Package
Rated from –40°C to +125°C Ambient
Automotive Qualified to AEC-Q100 (F085 Version)
The FA N3213 and FAN3214 dual 4 A gate drivers are
designed to drive N-channel enhancement- mode
MOSFETs in low -side sw itching applications by
providing high peak current pulses dur ing the short
sw itching intervals. They are both available w ith TTL
input thresholds. Internal circuitry provides an undervoltage lockout function by holding the output LOW until
the supply voltage is w ithin the operating range. In
addition, the drivers feature matched internal
propagation delays betw een A and B channels for
applications requir ing dual gate drives w ith critical
timing, such as synchronous rectifiers. This also
enables connecting tw o drivers in parallel to effectively
double the current capability driving a single MOSFET.
The FA N3213/14 drivers incorporate Miller Drive™
architecture for the final output stage. This bipolarMOSFET combination provides high current during the
Miller plateau stage of the MOSFET turn-on / turn-off
process to minimize sw itching loss, w hile providing railto-rail voltage sw ing and reverse current capability.
The FAN3213 offers two inverting drivers and the
FA N3214 offers tw o non-inverting drivers. Both are
offered in a standard 8-pin SOIC package.
Applications
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




Sw itch-Mode Pow er Supplies
High-Efficiency MOSFET Sw itching
Synchronous Rectifier Circuits
DC-to-DC Converters
Motor Control
Automotive-Qualified Systems (F085 version)
NC 1
INA 2
A
GND 3
INB 4
B
8
NC
NC 1
7
OUTA
INA 2
6
VDD
GND 3
5
OUTB
INB 4
FAN3213
8 NC
A
7 OUTA
6 VDD
B
5 OUTB
FAN3214
Figure 1. Pin Configurations
© 2008 Semiconductor Components Industries, LLC.
October-2017, Rev.2
Publication Order Number:
FAN3214 /D
FAN3213 / FAN3214 — Dual-4A, High-Speed, Low-Side Gate Drivers
FAN3213 / FAN3214
Dual-4 A, High-Speed, Low-Side Gate Drivers
Part Number
Logic
FAN3213TMX
Dual Inverting Channels
FAN3214TMX
Dual Non-Inverting Channels
(1)
Dual Inverting Channels
(1)
Dual Non-Inverting Channels
FAN3213TMX_F085
FAN3214TMX_F085
Input
Threshold
Package
Packing
Method
Quantity
per Reel
TTL
SOIC-8
Tape & Reel
2,500
Note:
1. Qualified to AEC-Q100
Package Outlines
1
8
2
7
3
6
4
5
Figure 2. SOIC-8 (Top View )
Thermal Characteristics(2)
Package
8-Pin Small Outline Integrated Circuit (SOIC)
JL(3)
JT(4)
JA(5)
 JB(6)
 JT(7)
Unit
38
29
87
41
2.3
°C/W
Notes:
2. Estimates derived from thermal simulation; actual values depend on the application.
3. Theta_JL (JL): Thermal resistance betw een the semiconductor junction and the bottom surface of all the leads
(including any thermal pad) that are typically soldered to a PCB.
4. Theta_JT (JT): Thermal resistance betw een the semiconductor junction and the top surface of the package,
assuming it is held at a uniform temperature by a top-side heatsink.
5. Theta_JA (ΘJA): Thermal resistance betw een junction and ambient, dependent on the PCB design, heat sinking,
and airflow . The value given is for natural convection w ith no heatsink, using a 2S2P board, as specified in
JEDEC standards JESD51-2, JESD51-5, and JESD51-7, as appropriate.
6. Psi_JB (JB): Thermal characterization parameter providing correlation betw een semiconductor junction
temperature and an application circuit board reference point for the thermal environment defined in Note 5. For
the SOIC-8 package, the board reference is defined as the PCB copper adjacent to pin 6.
7. Psi_JT (JT): Thermal characterization parameter providing correlation betw een the semiconductor junction
temperature and the center of the top of the package for the thermal environment defined in Note 5.
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FAN3213 / FAN3214 — Dual-4A, High-Speed, Low-Side Gate Drivers
Ordering Information
NC
1
INA
2
GND
3
INB
4
A
B
8
NC
NC
1
7
OUTA
INA
2
6
VDD
GND
3
5
OUTB
INB
4
FAN3213
A
B
8
NC
7
OUTA
6
VDD
5
OUTB
FAN3214
Figure 3. Pin Configurations (Repeated)
Pin Definitions
Pin
Name
Pin Description
1
NC
No Connect. This pin can be grounded or left floating.
2
INA
Input to Channel A.
3
GND
Ground. Common ground reference for input and output circuits.
4
INB
Input to Channel B.
5
(FAN3213)
OUTB
Gate Drive Output B (inverted from the input): Held LOW unless required input is
present and V DD is above UVLO threshold.
5
(FAN3214)
OUTB
Gate Drive Output B: Held LOW unless required input(s) are present and V DD is above
UVLO threshold.
6
VDD
Supply Voltage. Provides pow er to the IC.
7
(FAN3213)
OUTA
Gate Drive Output A (inverted from the input): Held LOW unless required input is
present and V DD is above UVLO threshold.
7
(FAN3214)
OUTA
Gate Drive Output A: Held LOW unless required input(s) are present and V DD is above
UVLO threshold.
8
NC
No Connect. This pin can be grounded or left floating.
Output Logic
FAN3213 (x=A or B)
INx
INx
OUTx
0
1
(9)
0
1
FAN3214 (x=A or B)
0
1
1
0
Note:
9. Default input signal if no external connection is made.
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OUTx
(9)
FAN3213 / FAN3214 — Dual-4A, High-Speed, Low-Side Gate Drivers
Pin Configurations
NC 1
8
NC
INA 2
7
OUTA
100k
100k
UVLO
GND 3
6
VDD
VDD_OK
INB 4
5
OUTB
100k
100k
Figure 4. FAN3213 Block Diagram
NC 1
8
NC
INA 2
7
OUTA
100k
100k
UVLO
GND 3
6
VDD
VDD_OK
INB 4
5
OUTB
100k
100k
Figure 5. FAN3214 Block Diagram
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FAN3213 / FAN3214 — Dual-4A, High-Speed, Low-Side Gate Drivers
Block Diagrams
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Symbol
Parameter
Min.
Max.
Unit
-0.3
20.0
V
V DD
VDD to PGND
V IN
INA and INB to GND
GND - 0.3 V DD + 0.3
V
OUTA and OUTB to GND
GND - 0.3 V DD + 0.3
V
V OUT
TL
Lead Soldering Temperature (10 Seconds)
TJ
Junction Temperature
TSTG
Storage Temperature
+260
ºC
-55
+150
ºC
-65
+150
ºC
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet spec ifications. ON Semiconductor
does not recommend exceeding them or designing to Absolute Maximum Ratings.
Symbol
Parameter
V DD
Supply Voltage Range
V IN
Input Voltage INA and INB
TA
Operating Ambient Temperature
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5
Min.
Max.
Unit
4.5
18.0
V
0
V DD
V
-40
+125
ºC
FAN3213 / FAN3214 — Dual-4A, High-Speed, Low-Side Gate Drivers
Absolute Maximum Ratings
Unless otherw ise noted, V DD=12 V, TJ =-40°C to +125°C. Currents are defined as positive into the device and
negative out of the device.
Symbol
Parameter
Conditions
Min. Typ.
Max.
Unit
18.0
V
0.70
0.95
mA
Supply
FAN321xT
V DD
Operating Range
4.5
IDD
Supply Current, Inputs Not Connected
V ON
Turn-On Voltage
INA=V DD, INB=0 V
3.5
3.9
4.3
V
V OFF
Turn-Off Voltage
INA=V DD, INB=0 V
3.3
3.7
4.1
V
0.70
1.20
mA
FAN321xTMX_F085 (Automotive-Qualified Versions)
IDD
V ON
V OFF
Supply Current, Inputs Not Connected
(12)
Turn-On Voltage
(12)
INA=V DD, INB=0 V
3.3
3.9
4.5
V
Turn-Off Voltage
(12)
INA=V DD, INB=0 V
3.1
3.7
4.3
V
0.8
1.2
Inputs
V IL_T
INx Logic Low Threshold
V IH_T
INx Logic High Threshold
1.6
V
2.0
V
FAN321xT
IIN+
Non-Inverting Input
IN from 0 to V DD
-1.5
175.0
µA
IIN-
Inverting Input
IN from 0 to V DD
-175.0
1.5
µA
0.8
V
1.5
µA
V HYS_T
TTL Logic Hysteresis Voltage
0.2
0.4
FAN321xTMX_F085 (Automotive-Qualified Versions)
Non-inverting Input Current
(12)
IN=0 V
IINx_T
Non-inverting Input Current
(12)
IN=V DD
90
120
175
µA
IINx_T
Inverting Input Current
(12)
IN=0 V
-175
-120
-90
µA
Inverting Input Current
(12)
IN=V DD
-1.5
1.5
µA
0.8
V
IINx_T
IINx_T
V HYS_T
-1.5
(12)
TTL Logic Hysteresis Voltage
0.1
0.4
Output
ISINK
OUT Current, Mid-Voltage, Sinking
(10)
ISOURCE
OUT Current, Mid-Voltage, Sourcing
IPK_SINK
OUT Current, Peak, Sinking
IPK_SOURCE
IRVS
TDEL.MATCH
(10)
(10)
OUT Current, Peak, Sourcing
(10)
Output Reverse Current Withstand
OUTx at V DD/2,
CLOAD=0.22 µF, f=1 kHz
4.3
A
OUTx at V DD/2,
CLOAD=0.22 µF, f=1 kHz
-2.8
A
CLOAD=0.22 µF, f=1 kHz
5
A
CLOAD=0.22 µF, f=1 kHz
-5
A
500
mA
(10)
Propagation Matching Betw een Channels
INA=INB, OUTA and OUTB
at 50% Point
2
4
ns
Continued on the following page…
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FAN3213 / FAN3214 — Dual-4A, High-Speed, Low-Side Gate Drivers
Electrical Characteristics
Unless otherw ise noted, V DD=12 V, TJ =-40°C to +125°C. Currents are defined as positive into the device and
negative out of the device.
Symbol
Parameter
Conditions
Min. Typ.
Max.
Unit
FAN321xT
tRISE
tFALL
tD1, tD2
Output Rise Time
Output Fall Time
(11)
(11)
Output Propagation Delay, TTL Inputs
(11)
CLOAD=2200 pF
12
20
ns
CLOAD=2200 pF
9
17
ns
17
29
ns
CLOAD=2200 pF
12
22
ns
CLOAD=2200 pF
9
18
ns
17
32
ns
0 - 5 V IN, 1 V/ns Slew Rate
9
FAN321xTMX_F085 (Automotive-Qualified Versions)
tRISE
tFALL
tD1, tD2
V OH
V OL
Output Rise Time
Output Fall Time
(11)(12)
(11)(12)
Output Propagation Delay, TTL Inputs
0 – 5 V IN, 1 V/ns Slew Rate
9
(12)
V OH=V DD–V OUT, IOUT=–1 mA
15
35
mV
(12)
IOUT=1 mA
10
25
mV
High Level Output Voltage
Low Level Output Voltage
(11)(12)
Notes:
10. Not tested in production.
11. See Timing Diagrams of Figure 6 and Figure 7.
12. Apply only to Automotive Version(FAN321xTMX_F085)
90%
90%
Output
Output
10%
Input
10%
VINH
Input
VINL
tD1
tD2
tRISE
VINH
VINL
tD1
tFALL
Figure 6. Non-Inverting Tim ing Diagram
tD2
tFALL
Figure 7. Inverting Tim ing Diagram
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tRISE
FAN3213 / FAN3214 — Dual-4A, High-Speed, Low-Side Gate Drivers
Electrical Characteristics (Continued)
Typical characteristics are provided at TA=25°C and V DD=12 V unless otherw ise noted.
Figure 8. IDD (Static) vs. Supply Voltage
(12)
Figure 9. IDD (Static) vs. Tem perature
(12)
Figure 10. IDD (No Load) vs. Frequency
Figure 11. IDD (2.2 nF Load) vs. Frequency
Figure 12. Input Thresholds vs. Supply Voltage
Figure 13. Input Thresholds vs. Tem perature
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FAN3213 / FAN3214 — Dual-4A, High-Speed, Low-Side Gate Drivers
Typical Performance Characteristics
Typical characteristics are provided at TA=25°C and V DD=12 V unless otherw ise noted.
UVLO Threshold vs. Tem perature
Figure 14. Propagation Delay vs. Supply Voltage
Figure 15. Propagation Delay vs. Supply Voltage
Figure 16. Propagation Delays vs. Tem perature
Figure 17. Propagation Delays vs. Tem perature
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FAN3213 / FAN3214 — Dual-4A, High-Speed, Low-Side Gate Drivers
Typical Performance Characteristics
Typical characteristics are provided at TA=25°C and V DD=12 V unless otherw ise noted.
Figure 18. Fall Tim e vs. Supply Voltage
Figure 19. Rise Tim e vs. Supply Voltage
Figure 20. Rise and Fall Tim es vs. Tem perature
Figure 21. Rise/Fall Waveform s w ith 2.2 nF Load
Figure 22. Rise/Fall Waveform s w ith 10 nF Load
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FAN3213 / FAN3214 — Dual-4A, High-Speed, Low-Side Gate Drivers
Typical Performance Characteristics
Typical characteristics are provided at TA=25°C and V DD=12 V unless otherw ise noted.
Figure 23. Quasi-Static Source Current
(13)
w ith V DD=12 V
Figure 24. Quasi-Static Sink Current w ith V DD=12 V
Figure 25. Quasi-Static Source Current
(14)
w ith V DD=8 V
Figure 26. Quasi-Static Sink Current w ith V DD=8 V
(13)
(14)
Notes:
13. For any inverting inputs pulled low , non-inverting inputs pulled high, or outputs driven high; static IDD increases
by the current flow ing through the corresponding pull-up/dow n resistor show n in Figure 4 and Figure 5.
14. The initial spike in each current w aveform is a measurement artifact caused by the stray inductance of the
current-measurement loop.
Test Circuit
VDD
470µF
Al. El.
4.7µF
ceramic
Current Probe
LECROY AP015
IN
1kHz
IOUT
1µF
ceramic
VOUT
CLOAD
0.22µF
Figure 27. Quasi-Static IOUT / V OUT Test Circuit
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FAN3213 / FAN3214 — Dual-4A, High-Speed, Low-Side Gate Drivers
Typical Performance Characteristics
VDD
Input Thresholds
The FAN3213 and the FAN3214 drivers consist of tw o
identical channels that may be used independently at
rated current or connected in parallel to double the
individual current capacity.
The input thresholds meet industry-standard TTL- logic
thresholds independent of the V DD voltage, and there is
a hysteresis voltage of approximately 0.4 V. These
levels per mit the inputs to be driven from a range of
input logic s ignal levels for w hich a voltage over 2 V is
considered logic HIGH. The driving signal for the TTL
inputs should have fast rising and falling edges w ith a
slew rate of 6 V/µs or faster, so a rise time from 0 to
3.3 V should be 550 ns or less. With reduced slew rate,
circuit noise could cause the driver input voltage to
exceed the hysteresis voltage and retrigger the dr iver
input, causing erratic operation.
Static Supply Current
In the IDD (static) typical performance characteristics
show n in Figure 8 and Figur e 9, each curve is produced
w ith both inputs floating and both outputs LOW to
indicate the low est static IDD current. For other states,
additional current flow s through the 100 k resistors on
the inputs and outputs show n in the block diagram of
each part (see Figure 4 and Figure 5). In these cases,
the actual static IDD current is the value obtained from
the curves plus this additional current.
MillerDrive™ Gate Drive Technology
Input
stage
VOUT
Figure 28. MillerDrive™ Output Architecture
Under-Voltage Lockout
The FAN321x startup logic is optimized to drive groundreferenced N-channel MOSFETs w ith an under-voltage
lockout ( UVLO) function to ensure that the IC starts up
in an orderly fashion. When V DD is rising, yet below the
3.9 V operational level, this circuit holds the output
LOW, regardless of the status of the input pins. After the
part is active, the supply voltage must drop 0.2 V before
the part shuts dow n. This hysteresis helps prevent
chatter w hen low V DD supply voltages have noise from
the pow er sw itching. This configuration is not suitable
for driving high-side P-channel MOSFETs because the
low output voltage of the driver w ould turn the P-channel
MOSFET on w ith V DD below 3.9 V.
FA N3213 and FA N3214 gate drivers incorporate the
Miller Drive™ architecture show n in Figure 28. For the
output stage, a combination of bipolar and MOS devices
provide large currents over a w ide range of supply
voltage and temperature variations. The bipolar devices
carry the bulk of the current as OUT sw ings betw een 1/3
to 2/3 V DD and the MOS devices pull the output to the
HIGH or LOW rail.
VDD Bypass Capacitor Guidelines
The purpose of the Miller Drive™ architecture is to
speed up sw itching by providing high current during the
Miller plateau region w hen the gate-drain capacitance of
the MOSFET is being charged or discharged as part of
the turn-on / turn-off process.
A typical criterion for choosing the value of CBYP is to
keep the ripple voltage on the V DD supply to ≤ 5%. This
is often achieved w ith a value ≥ 20 times the equivalent
load capacitance CEQV, defined here as QGATE/V DD.
Ceramic capacitors of 0.1 µF to 1 µF or larger are
common choices, as are dielectrics, such as X5R and
X7R, w ith good temperature characteristics and high
pulse current capability.
For applications w ith zero voltage sw itching during the
MOSFET turn-on or turn-off interval, the driver supplies
high peak current for fast sw itching even though the
Miller plateau is not present. This situation often occurs
in synchronous rectifier applications because the body
diode is generally conducting before the MOSFET is
sw itched ON.
The output pin slew rate is determined by V DD voltage
and the load on the output. It is not user adjustable, but
a series resistor can be added if a slow er rise or fall time
at the MOSFET gate is needed.
To enable this IC to turn a device ON quickly, a local
high-frequency bypass capacitor, CBYP, w ith low ESR and
ESL should be connected betw een the VDD and GND
pins w ith minimal trace length. This capacitor is in
addition to bulk electrolytic capacitance of 10 µF to 47 µF
commonly found on driver and controller bias circuits.
If circuit noise affects normal operation, the value of
CBYP may be increased, to 50-100 times the CEQV, or
CBYP may be split into tw o capacitors. One should be a
larger value, based on equivalent load capacitance, and
the other a s maller value, such as 1-10 nF mounted
closest to the VDD and GND pins to carry the higherfrequency components of the current pulses. The
bypass capacitor must provide the pulsed current from
both of the driver channels and, if the drivers are
sw itching simultaneously, the combined peak current
sourced from the CBYP w ould be tw ice as large as w hen
a single channel is sw itching.
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FAN3213 / FAN3214 — Dual-4A, High-Speed, Low-Side Gate Drivers
Applications Information
The FA N3213 and FAN3214 gate dr ivers incorporate
fast-reacting input circuits, short propagation delays,
and pow erful output stages capable of delivering current
peaks over 4 A to facilitate voltage transition times from
under 10 ns to over 150 ns. The follow ing layout and
connection guidelines are strongly recommended:






Figure 30 show s the current path w hen the gate dr iver
turns the MOSFET OFF. Ideally, the driver shunts the
current directly to the source of the MOSFET in a s mall
circuit loop. For fast turn-off times, the resistance and
inductance in this path should be minimized.
VDD
Keep high-current output and pow er ground paths
separate from logic input signals and signal ground
paths. This is especially critical for TTL-level logic
thresholds at driver input pins.
CBYP
FAN321x
Keep the driver as close to the load as possible to
minimize the length of high-current traces. This
reduces the series inductance to improve highspeed sw itching, w hile reducing the loop area that
can radiate EMI to the driver inputs and
surrounding circuitry.
If the inputs to a channel are not externally
connected, the internal 100 k resistors indicated
on block diagrams command a low output. In noisy
environments, it may be necessary to tie inputs of
an unused channel to VDD or GND using short
traces to prevent noise from causing spurious
output sw itching.
PWM
Figure 30. Current Path for MOSFET Turn-Off
Many high-speed pow er circuits can be susceptible
to noise injected from their ow n output or other
external sources, possibly causing output retriggering. These effects can be obvious if the
circuit is tested in breadboard or non-optimal circuit
layouts w ith long input or output leads. For best
results, make connections to all pins as short and
direct as possible.
FAN3213 and FAN3214 are pin-compatible w ith
many other industry-standard drivers.
The turn-on and turn-off current paths should be
minimized, as discussed in the follow ing section.
Figure 29 show s the pulsed gate drive current path
when the gate dr iver is supplying gate charge to turn the
MOSFET on. The current is supplied from the local
bypass capacitor, CBYP, and flow s through the driver to
the MOSFET gate and to ground. To reach the high
peak currents possible, the resistance and inductance in
the path should be minimized. The localized CBYP acts
to contain the high peak current pulses w ithin this driverMOSFET circuit, preventing them from disturbing the
sensitive analog circuitry in the PWM controller.
VDD
VDS
VDS
CBYP
FAN321x
PWM
Figure 29. Current Path for MOSFET Turn-On
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FAN3213 / FAN3214 — Dual-4A, High-Speed, Low-Side Gate Drivers
Layout and Connection Guidelines
At pow er-up, the driver output remains LOW until the
V DD voltage reaches the turn-on threshold. The
magnitude of the OUT pulses rises w ith V DD until
steady-state V DD is reached. The non-inverting
operation illustrated in Figure 31 shows that the output
remains LOW until the UVLO threshold is reached, then
the output is in-phase w ith the input.
The inverting configuration of startup w aveforms are
show n in Figure 32. With IN+ tied to V DD and the input
signal applied to IN–, the OUT pulses are inverted w ith
respect to the input. At pow er-up, the inverted output
remains LOW until the V DD voltage reaches the turn-on
threshold, then it follow s the input w ith inverted phase.
VDD
VDD
Turn-on threshold
Turn-on threshold
IN-
IN-
IN+
IN+
(VDD)
OUT
OUT
Figure 31. Non-Inverting Startup Waveform s
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Figure 32. Inverting Startup Waveform s
FAN3213 / FAN3214 — Dual-4A, High-Speed, Low-Side Gate Drivers
Operational Waveforms
Gate dr ivers used to sw itch MOSFETs and IGBTs at
high frequencies can dissipate s ignificant amounts of
pow er. It is important to deter mine the driver pow er
dissipation and the resulting junction temperature in the
application to ensure that the part is operating w ithin
acceptable temperature limits.
The total pow er dissipation in a gate dr iver is the sum of
tw o components, PGATE and PDYNAMIC:
PTOTAL = PGATE + PDYNAMIC
(1)
PGATE ( Gate Driving Loss): The most significant pow er
loss results from supplying gate current (charge per
unit time) to sw itch the load MOSFET on and off at
the sw itching frequency. The pow er dissipation that
results from dr iving a MOSFET at a specified gatesource voltage, V GS, w ith gate charge, QG, at
sw itching frequency, f SW, is determined by:
PGATE = QG • V GS • f SW • n
(2)
w here n is the number of driver channels in use (1 or 2).
PDYNAMIC (Dynamic Pre- Drive / Shoot-through
Current): A pow er loss resulting from internal current
consumption under dynamic operating conditions,
including pin pull-up / pull-dow n resistors. The internal
current consumption ( IDYNAMIC) can be estimated using
the graphs in Figure 10 of the Typical Perfor mance
Characteristics to deter mine the current IDYNAMIC
draw n from V DD under actual operating conditions:
PDYNAMIC = IDYNAMIC • V DD • n
To give a numerical example, assume for a 12 V V DD
(Vibas) system, the synchronous rectifier sw itches of
Figure 33 have a total gate charge of 60 nC at
V GS = 7 V. Therefore, tw o devices in parallel w ould have
120 nC gate charge. At a sw itching frequency of
300 kHz, the total pow er dissipation is:
PGATE = 120 nC • 7 V • 300 kHz • 2 = 0.504 W
(5)
PDYNAMIC = 3.0 mA • 12 V • 1 = 0.036 W
(6)
PTOTAL = 0.540 W
(7)
The SOIC-8 has a junction-to-board ther mal
characterization parameter of JB = 42°C/W. In a
system application, the localized temperature around
the device is a function of the layout and construction of
the PCB along w ith airflow across the surfaces. To
ensure reliable operation, the maximum junction
temperature of the device must be prevented from
exceeding the maximum rating of 150°C; w ith 80%
derating, TJ w ould be limited to 120°C. Rearranging
Equation 4 deter mines the board temperature required
to maintain the junction temperature below 120°C:
TB,MAX = TJ - PTOTAL •  JB
(8)
TB,MAX = 120°C – 0.54 W • 42°C/W = 97°C
(9)
(3)
where n is the number of driver ICs in use. Note that n is
usually be one IC even if the IC has tw o channels,
unless tw o or more.driver ICs are in parallel to driv e a
large load.
Once the pow er dissipated in the driver is deter mined,
the driver junction rise w ith respect to circuit board can
be evaluated using the follow ing ther mal equation,
assuming  JB w as determined for a similar ther mal
design (heat sinking and air flow ):
TJ = PTOTAL •  JB + TB
(4)
w here:
TJ
= driver junction temperature;
 JB
= (psi) thermal characterization parameter
relating temperature rise to total pow er
dissipation; and
TB
= board temperature in location as defined in
the Thermal Characteristics table.
www.onsemi.com
15
FAN3213 / FAN3214 — Dual-4A, High-Speed, Low-Side Gate Drivers
Thermal Guidelines
VIN
VOUT
PWM
Timing/
Isolation
1
8
2
7
3
6
4
5
FAN3214
Vbias
A
2
3 GND
FAN3214
4
Figure 33. High-Current Forw ard Converter
w ith Synchronous Rectification
VIN
8
1
Figure 34.
QC
QA
QD
QB
7
VDD 6
B
5
Center-Tapped Bridge Output w ith
Synchronous Rectifiers
FAN3214
PWM-A
FAN3225C
SR-1
PWM-B
Secondary
Phase Shift
Controller
SR-2
PWM-C
FAN3225C
PWM-D
Figure 35. Secondary Controlle d Full Bridge w ith Current Doubler Output,
Synchronous Rectifiers (Sim plified)
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16
FAN3213 / FAN3214 — Dual-4A, High-Speed, Low-Side Gate Drivers
Typical Application Diagrams
Type
Related Products
Part
Num ber
(15)
Gate Drive
(Sink/Src)
Single 1 A FAN3111C +1.1 A / -0.9 A
Single 1 A FAN3111E
+1.1 A / -0.9 A
Single 2 A FAN3100C +2.5 A / -1.8 A
Single 2 A FAN3100T
Single 2 A FAN3180
+2.5 A / -1.8 A
+2.4 A / -1.6 A
Input
Threshold
CMOS
External (16)
Logic
Single Channel of Dual-Input/Single-Output
Package
SOT23-5, MLP6
Single Non-Inverting Channel with External Reference SOT23-5, MLP6
CMOS
Single Channel of Two-Input/One-Output
SOT23-5, MLP6
TTL
Single Channel of Two-Input/One-Output
SOT23-5, MLP6
TTL
Single Non-Inverting Channel + 3.3 V LDO
SOT23-5
Dual 2 A
FAN3216T
+2.5 A / -1.8 A
TTL
Dual Inverting Channels
SOIC8
Dual 2 A
FAN3217T
+2.5 A / -1.8 A
TTL
Dual Non-Inverting Channels
SOIC8
Dual 2 A
FAN3226C +2.4 A / -1.6 A
CMOS
Dual Inverting Channels + Dual Enable
SOIC8, MLP8
Dual 2 A
FAN3226T
TTL
Dual Inverting Channels + Dual Enable
SOIC8, MLP8
Dual 2 A
FAN3227C +2.4 A / -1.6 A
CMOS
Dual Non-Inverting Channels + Dual Enable
SOIC8, MLP8
Dual 2 A
FAN3227T
TTL
Dual Non-Inverting Channels + Dual Enable
SOIC8, MLP8
Dual 2 A
FAN3228C +2.4 A / -1.6 A
Dual 2 A
FAN3228T
Dual 2 A
FAN3229C +2.4 A / -1.6 A
Dual 2 A
FAN3229T
Dual 2 A
+2.4 A / -1.6 A
+2.4 A / -1.6 A
CMOS
Dual Channels of Two-Input/One-Output, Pin Config.1 SOIC8, MLP8
TTL
Dual Channels of Two-Input/One-Output, Pin Config.1 SOIC8, MLP8
CMOS
Dual Channels of Two-Input/One-Output, Pin Config.2 SOIC8, MLP8
+2.4 A / -1.6 A
TTL
Dual Channels of Two-Input/One-Output, Pin Config.2 SOIC8, MLP8
FAN3268T
+2.4 A / -1.6 A
TTL
20 V Non-Inverting Channel (NMOS) and Inverting
Channel (PMOS) + Dual Enables
SOIC8
Dual 2 A
FAN3278T
+2.4 A / -1.6 A
TTL
30 V Non-Inverting Channel (NMOS) and Inverting
Channel (PMOS) + Dual Enables
SOIC8
Dual 4 A
FAN3213T
+2.5 A / -1.8 A
TTL
Dual Inverting Channels
SOIC8
Dual 4 A
FAN3214T
+2.5 A / -1.8 A
TTL
Dual Non-Inverting Channels
SOIC8
Dual 4 A
FAN3223C +4.3 A / -2.8 A
CMOS
Dual Inverting Channels + Dual Enable
SOIC8, MLP8
Dual 4 A
FAN3223T
TTL
Dual Inverting Channels + Dual Enable
SOIC8, MLP8
Dual 4 A
FAN3224C +4.3 A / -2.8 A
CMOS
Dual Non-Inverting Channels + Dual Enable
SOIC8, MLP8
Dual 4 A
FAN3224T
TTL
Dual Non-Inverting Channels + Dual Enable
SOIC8, MLP8
Dual 4 A
FAN3225C +4.3 A / -2.8 A
CMOS
Dual Channels of Two-Input/One-Output
SOIC8, MLP8
Dual 4 A
FAN3225T
TTL
Dual Channels of Two-Input/One-Output
SOIC8, MLP8
CMOS
Single Inverting Channel + Enable
SOIC8, MLP8
TTL
Single Inverting Channel + Enable
SOIC8, MLP8
CMOS
Single Non-Inverting Channel + Enable
SOIC8, MLP8
TTL
Single Non-Inverting Channel + Enable
SOIC8, MLP8
+2.4 A / -1.6 A
+4.3 A / -2.8 A
+4.3 A / -2.8 A
+4.3 A / -2.8 A
Single 9 A FAN3121C +9.7 A / -7.1 A
Single 9 A FAN3121T
+9.7 A / -7.1 A
Single 9 A FAN3122C +9.7 A / -7.1 A
Single 9 A FAN3122T
+9.7 A / -7.1 A
Dual 12 A FAN3240
+12.0 A
TTL
Dual-Coil Relay Driver, Timing Config. 0
SOIC8
Dual 12 A FAN3241
+12.0 A
TTL
Dual-Coil Relay Driver, Timing Config. 1
SOIC8
Notes:
15. Typical currents w ith OUTx at 6 V and V DD=12 V.
16. Thresholds proportional to an externally supplied reference voltage.
www.onsemi.com
17
FAN3213 / FAN3214 — Dual-4A, High-Speed, Low-Side Gate Drivers
Table 1.
4.90±0.10
0.65
A
(0.635)
8
5
B
1.75
6.00±0.20
PIN ONE
INDICATOR
5.60
3.90±0.10
1
4
1.27
1.27
0.25
C B A
LAND PATTERN RECOMMENDATION
SEE DETAIL A
0.175±0.075
0.22±0.03
C
1.75 MAX
0.10
0.42±0.09
OPTION A - BEVEL EDGE
(0.86) x 45°
R0.10
GAGE PLANE
R0.10
OPTION B - NO BEVEL EDGE
0.36
NOTES:
8°
0°
SEATING PLANE
0.65±0.25
(1.04)
DETAIL A
A) THIS PACKAGE CONFORMS TO JEDEC
MS-012, VARIATION AA.
B) ALL DIMENSIONS ARE IN MILLIMETERS.
C) DIMENSIONS DO NOT INCLUDE MOLD
FLASH OR BURRS.
D) LANDPATTERN STANDARD: SOIC127P600X175-8M
E) DRAWING FILENAME: M08Arev16
SCALE: 2:1
Figure 36. 8-Lead Sm all Outline Integrated Circuit (SOIC)
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18
FAN3213 / FAN3214 — Dual-4A, High-Speed, Low-Side Gate Drivers
Physical Dimensions
FAN3213 / FAN3214 — Dual-4A, High-Speed, Low-Side Gate Drivers
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