mic4452 Micrel Semiconductor, mic4452 Datasheet

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mic4452

Manufacturer Part Number
mic4452
Description
12a-peak Low-side Mosfet Driver Bipolar/cmos/dmos Process
Manufacturer
Micrel Semiconductor
Datasheet
MIC4451/4452
General Description
MIC4451 and MIC4452 CMOS MOSFET drivers are tough,
efficient, and easy to use. The MIC4451 is an inverting driver,
while the MIC4452 is a non-inverting driver.
Both versions are capable of 12A (peak) output and can drive
the largest MOSFETs with an improved safe operating mar-
gin. The MIC4451/4452 accepts any logic input from 2.4V to
V
Proprietary circuits allow the input to swing negative by as
much as 5V without damaging the part. Additional circuits
protect against damage from electrostatic discharge.
MIC4451/4452 drivers can replace three or more discrete
components, reducing PCB area requirements, simplifying
product design, and reducing assembly cost.
Modern Bipolar/CMOS/DMOS construction guarantees
freedom from latch-up. The rail-to-rail swing capability of
CMOS/DMOS insures adequate gate voltage to the MOS-
FET during power up/down sequencing. Since these devices
are fabricated on a self-aligned process, they have very low
crossover current, run cool, use little power, and are easy
to drive.
Functional Diagram
July 2005
S
without external speed-up capacitors or resistor networks.
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
IN
2kΩ
0.1mA
0.3mA
NONINVERTING
1
I N V E R T I N G
MIC4451
MIC4452
Features
• BiCMOS/DMOS Construction
• Latch-Up Proof: Fully Isolated Process is Inherently
• Input Will Withstand Negative Swing of Up to 5V
• Matched Rise and Fall Times ............................... 25ns
• High Peak Output Current .............................12A Peak
• Wide Operating Range .............................. 4.5V to 18V
• High Capacitive Load Drive ........................... 62,000pF
• Low Delay Time .............................................30ns Typ.
• Logic High Input for Any Voltage from 2.4V to V
• Low Supply Current .............. 450µA With Logic 1 Input
• Low Output Impedance .........................................1.0Ω
• Output Voltage Swing to Within 25mV of GND or V
• Low Equivalent Input Capacitance (typ) ................. 7pF
Applications
• Switch Mode Power Supplies
• Motor Controls
• Pulse Transformer Driver
• Class-D Switching Amplifiers
• Line Drivers
• Driving MOSFET or IGBT Parallel Chip Modules
• Local Power ON/OFF Switch
• Pulse Generators
Immune to Any Latch-up.
12A-Peak Low-Side MOSFET Driver
Bipolar/CMOS/DMOS Process
MIC4451/4452
GND
V
S
OUT
MIC4451/4452
Micrel, Inc.
S
S

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mic4452 Summary of contents

Page 1

... MIC4451/4452 General Description MIC4451 and MIC4452 CMOS MOSFET drivers are tough, efficient, and easy to use. The MIC4451 is an inverting driver, while the MIC4452 is a non-inverting driver. Both versions are capable of 12A (peak) output and can drive the largest MOSFETs with an improved safe operating mar- gin ...

Page 2

... MIC4451/4452 Ordering Information Part Number Standard Pb-Free MIC4451BN MIC4451YN MIC4451BM MIC4451YM MIC4451CT MIC4451ZT MIC4452BN MIC4452YN MIC4452BM MIC4452YM MIC4452CT MIC4452ZT Pin Configurations Pin Description Pin Number Pin Number Pin Name TO-220-5 DIP, SOIC TAB MIC4451/4452 ...

Page 3

MIC4451/4452 Absolute Maximum Ratings Supply Voltage .............................................................. 20V Input Voltage ...................................V Input Current (V > .............................................. Power Dissipation, T ≤ 25°C AMBIENT PDIP .................................................................... 960mW SOIC .................................................................. 1040mW 5-Pin TO-220 .............................................................. 2W Power Dissipation, ...

Page 4

... D2 90 TPU T 10% 0V Figure 2. Noninverting Driver Switching Time 4 Min Typ 2.4 1.4 1.0 –5 –10 V –.025 S 0.8 1 0.6 0.1 4 18V S 0.1µF 0.1µF IN OUT 15000pF MIC4452 2. Micrel, Inc. Max Units µA V 0.025 V 2.2 Ω 2.2 Ω ...

Page 5

MIC4451/4452 Typical Characteristic Curves Rise Time vs. Supply Voltage 220 200 180 160 140 47,000pF 120 100 80 22,000pF 60 40 10,000pF SUPPLY VOLTAGE (V) Rise Time vs. Capacitive Load ...

Page 6

MIC4451/4452 Typical Characteristic Curves (Cont.) Propagation Delay vs. Supply Voltage SUPPLY VOLTAGE (V) Quiescent Supply Current vs. Temperature 1000 V = 18V ...

Page 7

... V DD MIC4451 φ CONDUCTION ANGLE LOGIC CONTROL 0° TO 180° CONDUCTION ANGLE V DD CONTROL ° ° MIC4452 Figure 3. Direct Motor Drive +15 (x2) 1N4448 5.6 kΩ 560 Ω 0.1µF 50V + 1µF 50V ...

Page 8

MIC4451/4452 Input Stage The input voltage level of the MIC4451 changes the quiescent supply current. The N channel MOSFET input stage transistor drives a 320µA current source load. With a logic “1” input, the maximum quiescent supply current is 400µA. ...

Page 9

MIC4451/4452 As this energy is lost in the driver each time the load is charged or discharged, for power dissipation calculations the 1/2 is removed. This equation also shows that it is good practice not to place more voltage on ...

Page 10

... MIC4451/4452 0 V MIC4451/4452 +18 V WIMA MK22 1 µF 5.0V 1 TEK CURRENT PROBE 6302 MIC4452 5 0.1µF 0.1µF 4 Figure 6. Peak Output Current Test Circuit 10 Micrel, Inc 15,000 pF POLYCARBONATE July 2005 ...

Page 11

MIC4451/4452 Package Information 0.018 (0.57) 0.026 (0.65) 0.157 (3.99) 0.150 (3.81) 0.064 (1.63) 0.045 (1.14) July 2005 PIN 1 DIMENSIONS: INCH (MM) 0.380 (9.65) 0.370 (9.40) 0.135 (3.43) 0.125 (3.18) 0.380 (9.65) 0.130 (3.30) 0.320 (8.13) 0.100 (2.54) 0.0375 (0.952) ...

Page 12

MIC4451/4452 0.108 ±0.005 (2.74 ±0.13) 0.067 ±0.005 (1.70 ±0.127) 0.268 REF (6.81 REF) MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL This information furnished by Micrel in this data sheet is believed to ...

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