SM74104 Texas instruments

SM74104

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SM74104

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Описание

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 driver 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 manner to prevent shoot-through issues. In addition to the adaptive 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. For all available packages, see the orderable addendum at the end of the data sheet.

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

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Bus voltage (max) (V)	100
Power switch	MOSFET
Input VCC (min) (V)	9
Input VCC (max) (V)	14
Peak output current (A)	1.8
Operating temperature range (°C)	-40 to 125
Undervoltage lockout (typ) (V)	3.5
Rating	Catalog
Propagation delay time (µs)	0.025
Rise time (ns)	15
Fall time (ns)	15
Iq (mA)	0.01
Input threshold	TTL
Channel input logic	TTL
Negative voltage handling at HS pin (V)	-1
Driver configuration	Dual, Single