Microchip TC4428 Bedienungsanleitung


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2005-2013 Microchip Technology Inc. DS21939B-page 1
TC4426AM/TC4427AM/TC4428AM
Features
High Peak Output Current: 1.5A
Wide Input Supply Voltage Operating Range:
- 4.5V to 18V
High Capacitive Load Drive Capability:
- 1000 pF in 25 ns (typ.)
Short Delay Times: 30 ns (typ.)
Matched Rise, Fall and Delay Times
Low Supply Current:
- With Logic ‘1’ Input – 1 mA (typ.)
- With Logic ‘0’ Input – 100 µA (typ.)
Low Output Impedance: 7(typ.)
Latch-Up Protected: Will Withstand 0.5A Reverse
Current
Input: Will Withstand Negative Inputs Up to 5V
ESD Protected: 4 kV
Pin-compatible with the
TC426M/TC427M/TC428M and
TC4426M/TC4427M/TC4428M
Wide Operating Temperature Range:
- -55°C to +125°C
See TC4426A/TC4427A/TC4428A Data Sheet
(DS21423) for additional temperature range and
packaging offerings
Applications
Switch-mode Power Supplies
Line Drivers
Pulse Transformer Drive
General Description
The TC4426AM/TC4427AM/TC4428AM are improved
versions of the earlier TC4426M/TC4427M/TC4428M
family of MOSFET drivers. In addition to matched rise
and fall times, the TC4426AM/TC4427AM/TC4428AM
devices have matched leading and falling edge
propagation delay times.
These devices are highly latch-up resistant under any
conditions within their power and voltage ratings. They
are not subject to damage when up to 5V of noise
spiking (of either polarity) occurs on the ground pin.
They can accept, without damage or logic upset, up to
500 mA of reverse current (of either polarity) being
forced back into their outputs. All terminals are fully
protected against Electrostatic Discharge (ESD) up to
4 kV.
The TC4426AM/TC4427AM/TC4428AM MOSFET
drivers can easily charge/discharge 1000 pF gate
capacitances in under 30 ns, while providing low
enough impedances in both the on and off states to
ensure the MOSFET's intended state will not be
affected, even by large transients.
Package Types
8-Pin CERDIP
1
2
3
4
NC
5
6
7
8
OUT A
OUT B
NC
IN A
GND
IN B
VDD
TC4426AM
TC4427AM
TC4426AM TC4427AM
NC
OUT A
OUT B
VDD
TC4428AM
NC
OUT A
OUT B
VDD
TC4428AM
1.5A Dual High-Speed Power MOSFET Drivers
TC4426AM/TC4427AM/TC4428AM
DS21939B-page 2 2005-2013 Microchip Technology Inc.
Functional Block Diagram
Effective
Input C = 12 pF
(Each Input) TC4426AM/TC4427AM/TC4428AM(1)
Output
Input
GND(2)
VDD
300 mV
4.7V
Inverting
Non-Inverting
Note 1: The TC4426AM has two inverting drivers; the TC4427AM has two non-inverting drivers;
the TC4428AM has one inverting and one non-inverting driver.
2: Ground any unused driver input.
2005-2013 Microchip Technology Inc. DS21939B-page 3
TC4426AM/TC4427AM/TC4428AM
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings†
Supply Voltage ................................................................+22V
Input Voltage, IN A or IN B .......... (VDD + 0.3V) to (GND – 5V)
Notice: Stresses above those listed under "Absolute
Maximum Ratings" may cause permanent damage to the
device. These are stress ratings only and functional operation
of the device at these or any other conditions above those
indicated in the operation sections of the specifications is not
implied. Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability.
TEMPERATURE CHARACTERISTICS
DC CHARACTERISTICS
Electrical Specifications: Unless otherwise noted, over operating temperature range with 4.5V V
DD18V.
Parameters Sym Min Typ Max Units Conditions
Input
Logic ‘1’, High Input Voltage V
IH 2.4 — — V
Logic 0’, Low Input Voltage VIL — 0.8 V
Input Current IIN -1.0
-10
+1.0
+10
µA 0VVINVDD
Output
High Output Voltage VOH VDD0.025 V DC TEST
Low Output Voltage VOL 0.025 V DC TEST
Output Resistance RO 7 9 IOUT = 10 mA, VDD = 18V, TA = +25°C
8 12 -55°C TA +125°C
Peak Output Current IPK 1.5 A VDD = 18V
Latch-Up Protection
Withstand Reverse Current
IREV >0.5 A Duty cycle2%, t 300 µs
VDD = 18V
Switching Time (Note 1)
Rise Time tR 25 35 ns TA = +2C
30 40 -55°C TA +125°C, Figure 4-1
Fall Time tF 25 35 ns TA = +25°C
30 40 -55°C TA +125°C, Figure 4-1
Delay Time tD1 30 35 ns TA = +25°C
38 50 -55°C TA +125°C, Figure 4-1
Delay Time tD2 30 35 ns TA = +25°C
38 50 -55°C TA +125°C, Figure 4-1
Power Supply
Power Supply Current IS
1.0
0.1
2.0
0.2
mA VIN = 3V (Both inputs)
VIN = 0V (Both inputs), VDD = 18V
Note 1: Switching times ensured by design.
Electrical Specifications: Unless otherwise noted, all parameters apply with 4.5V V
DD 18V.
Parameters Sym Min Typ Max Units Conditions
Temperature Ranges
Specified Temperature Range (M) TA-55 +125 ºC
Maximum Junction Temperature TJ +150 ºC
Storage Temperature Range TA-65 +150 ºC
Package Thermal Resistances
Thermal Resistance, 8L-CERDIP JA 150 — ºC/W


Produktspezifikationen

Marke: Microchip
Kategorie: Nicht kategorisiert
Modell: TC4428

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