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ETC - Complementary Switch FET Drivers

Numéro de référence UC3714
Description Complementary Switch FET Drivers
Fabricant ETC 
Logo ETC 





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UC3714 fiche technique
К1229КП1Р,КП1Н4/
К1229КП2Р,КП2Н4
(UC3714/UC3715)
Inv 216
Complementary Switch FET Drivers
February 2001- revised September 2002
DESCRIPTION
These two families of high speed drivers are designed to provide drive waveforms for complementary switches.
Complementary switch configurations are commonly used in synchronous rectification circuits and active clamp/reset circuits,
which can provide zero voltage switching. In order to facilitate the soft switching transitions, independently programmable
delays between the two output waveforms are provided on these drivers. The delay pins also have true zero voltage sensing
capability which allows immediate activation of the corresponding switch when zero voltage is applied. These devices require
a PWM-type input to operate and can be interfaced with commonly available PWM controllers.
In the UC3714 series, the AUX output is inverted to allow driving a p-channel MOSFET. In the UC3715* series the two outputs
are configured in a true complementary fashion.
* The UC3715 series are not produced yet.
FEATURES
Single Input (PWM and TTL Compatible)
High Current Power FET Driver, 1.0A Source/2A Sink
Auxiliary Output FET Driver, 0.5A Source/1A Sink
Time Delays Between Power and Auxiliary Outputs
Independently Programmable from 50ns to 500 ns
Time Delay or True Zero-Voltage Operation
Independently Configurable for Each Output
Switching Frequency to 1MHz
Typical 50 ns Propagation Delays
ENBL Pin Activates 220 µA Sleep Mode
Power Output is Active Low in Sleep Mode
Synchronous Rectifier Driver
BLOCK DIAGRAM
INPUT 6
T1 7
T2 5
50ns-500ns
50ns-500ns
UC3714
ONLY
BIAS
ENBL 3V
GND
LOGIC
GATES
TIMER
REF
ENBL 8
1.4V
ENABLE
Note: Pin numbers refer to J, N and D packages
Absolute Maximum Ratings
Supply Voltage (low impedance source)
Power Driver
continuous
peak
Power Driver
continuous
peak
Auxiliary Driver
continuous
peak
Auxiliary Driver
continuous
peak
Input Voltage Range
Storage Temperature Range
Operating Junction Temperature (Note 1)
Lead Temperature (Soldering 10 seconds)
VCC
IOH
IOL
IOH
IOL
INPUT, ENBL
20
-200
-1
400
2
-100
-500
200
1
-0.3 to 20
-65 to150
150
300
2 PWR
4 AUX
1 VCC
3 GND
V
mA
A
mA
A
mA
mA
mA
A
V
oC
oC
oC

PagesPages 7
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