SM74104 Datasheet, PDF (2/16 Pages) Texas Instruments – SM74104 High Voltage Half-Bridge Gate Driver with Adaptive Delay

SM74104
November 14, 2011
High Voltage Half-Bridge Gate Driver with Adaptive Delay
General Description
The SM74104 High Voltage Gate Driver is designed to drive
both the high side and the low side N-Channel MOSFETs in
a synchronous buck configuration. The floating high-side driv-
er is capable of working with supply voltages up to 100V. The
high side and low side gate drivers are controlled from a single
input. Each change in state is controlled in an adaptive man-
ner to prevent shoot-through issues. In addition to the adap-
tive transition timing, an additional delay time can be added,
proportional to an external setting resistor. An integrated high
voltage diode is provided to charge the high side gate drive
bootstrap capacitor. A robust level shifter operates at high
speed while consuming low power and providing clean level
transitions from the control logic to the high side gate driver.
Under-voltage lockout is provided on both the low side and
the high side power rails. This device is available in the stan-
dard SOIC-8 pin and the LLP-10 pin packages.
Features
■ ^{Renewable Energy Grade}
■ ^{Drives both a high side and low side N-channel MOSFET}
■ ^{Adaptive rising and falling edges with programmable}
additional delay
■ ^{Single input control}
■ ^{Bootstrap supply voltage range up to 118V DC}
■ ^{Fast turn-off propagation delay (25 ns typical)}
■ ^{Drives 1000 pF loads with 15 ns rise and fall times}
■ ^{Supply rail under-voltage lockout}
Typical Applications
■ ^{Current Fed Push-Pull Power Converters}
■ ^{High Voltage Buck Regulators}
■ ^{Active Clamp Forward Power Converters}
■ ^{Half and Full Bridge Converters}
Package
■ ^{LLP-10 (4 mm x 4 mm)}
■ ^SOIC-8
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