LMG1210 Texas instruments

LMG1210

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LMG1210

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Описание

The LMG1210 is a 200-V, half-bridge MOSFET and Gallium Nitride Field Effect Transistor (GaN FET) driver designed for ultra-high frequency, high-efficiency applications that features adjustable deadtime capability, very small propagation delay, and 3.4-ns high-side low-side matching to optimize system efficiency. This part also features an internal LDO which ensures a gate-drive voltage of 5-V regardless of supply voltage. To enable best performance in a variety of applications, the LMG1210 allows the designer to choose the optimal bootstrap diode to charge the high-side bootstrap capacitor. An internal switch turns the bootstrap diode off when the low side is off, effectively preventing the high-side bootstrap from overcharging and minimizing the reverse recovery charge. Additional parasitic capacitance across the GaN FET is minimized to less than 1 pF to reduce additional switching losses. The LMG1210 features two control input modes: Independent Input Mode (IIM) and PWM mode. In IIM each of the outputs is independently controlled by a dedicated input. In PWM mode the two complementary output signals are generated from a single input and the user can adjust the dead time from 0 to 20 ns for each edge. The LMG1210 operates over a wide temperature range from –40°C to 125°C and is offered in a low-inductance WQFN package.

Up to 50-MHz operation
10-ns typical propagation delay
3.4-ns high-side to low-side matching
Minimum pulse width of 4 ns
Two control input options
- Single PWM input with adjustable dead time
- Independent input mode
1.5-A peak source and 3-A peak sink currents
External bootstrap diode for flexibility
Internal LDO for adaptability to voltage rails
High 300-V/ns CMTI
HO to LO capacitance less than 1 pF
UVLO and overtemperature protection
Low-inductance WQFN package

Bus voltage (max) (V)	300
Power switch	GaNFET, MOSFET
Input VCC (min) (V)	6
Input VCC (max) (V)	18
Peak output current (A)	3
Operating temperature range (°C)	-40 to 125
Undervoltage lockout (typ) (V)	4
Rating	Catalog
Propagation delay time (µs)	0.01
Rise time (ns)	0.5
Fall time (ns)	0.5
Iq (mA)	0.3
Input threshold	TTL
Channel input logic	TTL/PWM
Features	Bootstrap supply voltage clamp, Internal LDO, Resistor-controllable deadtime
Driver configuration	Half bridge