FAN3223T Fairchild Semiconductor, FAN3223T Datasheet

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FAN3223T

Manufacturer Part Number
FAN3223T
Description
The FAN3223-25 family of dual 4A gate drivers is designed to drive N-channel enhancement-mode MOSFETs in low-side switching applications by providing high peak current pulses during the short switching intervals
Manufacturer
Fairchild Semiconductor
Datasheet

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© 2007 Fairchild Semiconductor Corporation
FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8
FAN3223 / FAN3224 / FAN3225
Dual 4A High-Speed, Low-Side Gate Drivers
Features
Applications
GND
ENA
INA
INB
Industry-Standard Pinouts
4.5 to 18V Operating Range
5A Peak Sink/Source at V
4.3A Sink / 2.8A Source at V
Choice of TTL or CMOS Input Thresholds
Three Versions of Dual Independent Drivers:
-
-
-
Internal Resistors Turn Driver Off If No Inputs
MillerDrive™ Technology
12ns / 9ns Typical Rise/Fall Times with 2.2nF Load
Typical Propagation Delay Under 20ns Matched
within 1ns to the Other Channel
Double Current Capability by Paralleling Channels
8-Lead 3x3mm MLP or 8-Lead SOIC Package
Rated from –40°C to +125°C Ambient
Switch-Mode Power Supplies
High-Efficiency MOSFET Switching
Synchronous Rectifier Circuits
DC-to-DC Converters
Motor Control
Dual Inverting + Enable (FAN3223)
Dual Non-Inverting + Enable (FAN3224)
Dual-Inputs (FAN3225)
1
2
3
4
FAN3223
A
B
8
7
6
5
ENB
OUTA
VDD
OUTB
DD
= 12V
OUT
= 6V
GND
Figure 1. Pin Configurations
ENA
INA
INB
1
2
3
4
FAN3224
A
B
Description
The FAN3223-25 family of dual 4A gate drivers is
designed
MOSFETs
providing high peak current pulses during the short
switching intervals. The driver is available with either
TTL or CMOS input thresholds. Internal circuitry
provides an under-voltage lockout function by holding
the output LOW until the supply voltage is within the
operating range. In addition, the drivers feature matched
internal propagation delays between A and B channels
for applications requiring dual gate drives with critical
timing, such as synchronous rectifiers. This also
enables connecting two drivers in parallel to effectively
double the current capability driving a single MOSFET.
The
architecture for the final output stage. This bipolar-
MOSFET combination provides high current during the
Miller plateau stage of the MOSFET turn-on / turn-off
process to minimize switching loss, while providing rail-
to-rail voltage swing and reverse current capability.
The FAN3223 offers two inverting drivers and the
FAN3224 offers two non-inverting drivers. Each device
has dual independent enable pins that default to ON if
not connected. In the FAN3225, each channel has dual
inputs of opposite polarity, which allows configuration as
non-inverting or inverting with an optional enable
function using the second input. If one or both inputs are
left unconnected, internal resistors bias the inputs such
that the output is pulled LOW to hold the power
MOSFET OFF.
Related Resources
AN-6069:
Evaluation of Low-Side Gate Drivers
8
7
6
5
FAN322X
ENB
OUTA
VDD
OUTB
to
Application
in
drive
low-side
drivers
INB+
GND
INB
INA
N-channel
-
-
Review
switching
1
2
3
4
incorporate
FAN3225
enhancement-mode
+
+
and
-
-
A
B
applications
October 2011
www.fairchildsemi.com
MillerDrive™
Comparative
8
7
6
5
INA+
OUTA
VDD
OUTB
by

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FAN3223T Summary of contents

Page 1

... GND VDD 3 6 INB OUTB FAN3223 © 2007 Fairchild Semiconductor Corporation FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8 Description The FAN3223-25 family of dual 4A gate drivers is designed MOSFETs = 12V providing high peak current pulses during the short = 6V OUT switching intervals. The driver is available with either TTL or CMOS input thresholds ...

Page 2

... Ordering Information Part Number FAN3223CMPX FAN3223CMX Dual Inverting Channels + Dual Enable FAN3223TMPX FAN3223TMX FAN3224CMPX FAN3224CMX Dual Non-Inverting Channels + Dual Enable FAN3224TMPX FAN3224TMX FAN3225CMPX FAN3225CMX Dual Channels of Two-Input / One- Output Drivers FAN3225TMPX FAN3225TMX Package Outlines Figure 2. 3x3mm MLP-8 (Top View) Thermal Characteristics ...

Page 3

... FAN3223 (x ENx INx (7) ( Note: 7. Default input signal if no external connection is made. © 2007 Fairchild Semiconductor Corporation FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8 ENA 1 8 INA GND 3 6 INB FAN3224 Figure 4. Pin Assignments (Repeated) ...

Page 4

... Block Diagrams © 2007 Fairchild Semiconductor Corporation FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8 Figure 5. FAN3223 Block Diagram Figure 6. FAN3224 Block Diagram 4 www.fairchildsemi.com ...

Page 5

... Block Diagrams © 2007 Fairchild Semiconductor Corporation FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8 Figure 7. FAN3225 Block Diagram 5 www.fairchildsemi.com ...

Page 6

... Enable Voltage ENA and ENB EN V Input Voltage INA, INA+, INA–, INB, INB+ and INB– Operating Ambient Temperature A © 2007 Fairchild Semiconductor Corporation FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8 Parameter Human Body Model, JEDEC JESD22-A114 Charged Device Model, JEDEC JESD22-C101 Parameter 6 Min. ...

Page 7

... INx Logic High Threshold INH_C I IN Current, Low INL I IN Current, High INH V CMOS Logic Hysteresis Voltage HYS_C ENABLE (FAN3223C, FAN3223T, FAN3224C, FAN3224T) V Enable Logic Low Threshold ENL V Enable Logic High Threshold ENH V TTL Logic Hysteresis Voltage HYS_T R Enable Pull-up Resistance ...

Page 8

... EN inputs have TTL thresholds; refer to the ENABLE section 10. Not tested in production. 11. See Timing Diagrams of Figure 10 and Figure 11. 12. See Timing Diagrams of Figure 8 and Figure 9. © 2007 Fairchild Semiconductor Corporation FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8 (Continued) =-40°C to +125°C. Currents are defined as positive into the device and negative ...

Page 9

... Timing Diagrams 90% Output 10% V INH Input V INL t D1 Figure 8. Non-Inverting (EN HIGH or Floating) Figure 10. Non-Inverting (IN HIGH) © 2007 Fairchild Semiconductor Corporation FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8 Output Input RISE FALL Figure 9. Inverting (EN HIGH or Floating) 9 90% 10% V INH V INL ...

Page 10

... Typical Performance Characteristics Typical characteristics are provided at 25°C and V Figure 12. I (Static) vs. Supply Voltage DD Figure 15. I (No-Load) vs. Frequency DD © 2007 Fairchild Semiconductor Corporation FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8 =12V unless otherwise noted. DD (13) Figure 13. I Figure 14. I (Static) vs. Supply Voltage DD Figure 16 ...

Page 11

... Typical Performance Characteristics Typical characteristics are provided at 25°C and V Figure 17. I (2.2nF Load) vs. Frequency DD Figure 19. I (Static) vs. Temperature DD © 2007 Fairchild Semiconductor Corporation FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8 =12V unless otherwise noted. DD Figure 18. I (13) Figure 20. I Figure 21. I (Static) vs. Temperature ...

Page 12

... Typical Performance Characteristics Typical characteristics are provided at 25°C and V Figure 22. Input Thresholds vs. Supply Voltage Figure 25. Input Thresholds vs. Temperature © 2007 Fairchild Semiconductor Corporation FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8 =12V unless otherwise noted. DD Figure 23. Input Thresholds vs. Supply Voltage Figure 24. Input Threshold % vs. Supply Voltage Figure 26 ...

Page 13

... Typical Performance Characteristics Typical characteristics are provided at 25°C and V Figure 27. UVLO Thresholds vs. Temperature Figure 29. Propagation Delay vs. Supply Voltage Figure 31. Propagation Delay vs. Supply Voltage © 2007 Fairchild Semiconductor Corporation FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8 =12V unless otherwise noted. DD Figure 28. UVLO Threshold vs. Temperature Figure 30 ...

Page 14

... Typical Performance Characteristics Typical characteristics are provided at 25°C and V Figure 33. Propagation Delays vs. Temperature Figure 35. Propagation Delays vs. Temperature Figure 37. Fall Time vs. Supply Voltage © 2007 Fairchild Semiconductor Corporation FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8 =12V unless otherwise noted. DD Figure 34. Propagation Delays vs. Temperature Figure 36 ...

Page 15

... Figure 39. Figure 40. Rise/Fall Waveforms with 2.2nF Load Figure 42. Quasi-Static Source Current with V =12V DD © 2007 Fairchild Semiconductor Corporation FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8 =12V unless otherwise noted. DD Rise and Fall Times vs. Temperature Figure 41. Rise/Fall Waveforms with 10nF Load Figure 43. Quasi-Static Sink Current with V ...

Page 16

... The initial spike in each current waveform is a measurement artifact caused by the stray inductance of the current-measurement loop. Test Circuit © 2007 Fairchild Semiconductor Corporation FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8 =12V unless otherwise noted. DD Figure 45 ...

Page 17

... Figure 5 - Figure 7). In these cases, the actual static I current is the value obtained from the curves plus this additional current. © 2007 Fairchild Semiconductor Corporation FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8 MillerDrive™ Gate Drive Technology FAN322x gate drivers incorporate the MillerDrive™ ...

Page 18

... For best results, make connections to all pins as short and direct as possible. © 2007 Fairchild Semiconductor Corporation FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8  The FAN322x is compatible with many other industry-standard drivers. In single input parts with enable pins, there is an internal 100k ...

Page 19

... HIGH. Pulling the IN+ pin to GND forces the output LOW, regardless of the state of the IN- pin. Figure 51. Dual-Input Driver Enabled, Inverting Configuration © 2007 Fairchild Semiconductor Corporation FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8 Operational Waveforms At power-up, the driver output remains LOW until the V voltage reaches the turn-on threshold ...

Page 20

... T = board temperature in location as defined in B the Thermal Characteristics table. © 2007 Fairchild Semiconductor Corporation FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8 To give a numerical example, if the synchronous rectifier switches in the forward converter of Figure 54 are FDMS8660S, the datasheet gives a total gate charge of 60nC at V would have 120nC gate charge ...

Page 21

... Typical Application Diagrams Figure 54. High Current Forward Converter with Synchronous Rectification Figure 56. Secondary Controlled Full Bridge with Current Doubler Output, Synchronous © 2007 Fairchild Semiconductor Corporation FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8 Figure 55. Center-tapped Bridge Output with Synchronous Rectifiers Rectifiers (Simplified) 21 www.fairchildsemi.com ...

Page 22

... FAN3228C +2.4A / -1.6A Dual 2A FAN3228T +2.4A / -1.6A Dual 2A FAN3229C +2.4A / -1.6A Dual 2A FAN3229T +2.4A / -1.6A Dual 2A FAN3268T +2.4A / -1.6A Dual 2A FAN3278T +2.4A / -1.6A Dual 4A FAN3213T +2.5A / -1.8A Dual 4A FAN3214T +2.5A / -1.8A Dual 4A FAN3223C +4.3A / -2.8A Dual 4A FAN3223T +4.3A / -2.8A Dual 4A FAN3224C +4.3A / -2.8A Dual 4A FAN3224T +4.3A / -2.8A Dual 4A FAN3225C +4.3A / -2.8A Dual 4A FAN3225T +4.3A / -2.8A Single 9A FAN3121C +9.7A / -7.1A Single 9A FAN3121T +9.7A / -7.1A Single 9A FAN3122T +9.7A / -7.1A Single 9A FAN3122C +9.7A / -7.1A Notes: 15. Typical currents with OUTx at 6V and V 16. Thresholds proportional to an externally supplied reference voltage. © ...

Page 23

... Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’ ...

Page 24

... Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’ ...

Page 25

... Fairchild Semiconductor Corporation FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8 25 www.fairchildsemi.com ...

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