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LMG2610RRGT

650-V 170/248-mΩ GaN half-bridge for ACF with integrated driver, protection and current sense

Manufacturer:

TI
Mfr.Part #:

LMG2610RRGT
Datasheet:

LMG2610RRGT Datasheet (PDF)
Product Type:

Gate Drivers
Lifecycle:

Active

Email: [email protected]

Skype: live:.cid.ab6b29428937b76

Tel: +852 95804164

LMG2610RRGT General Description

The LMG2610 is a 650-V GaN power-FET half bridge intended for < 75-W active-clamp flyback (ACF) converters in switch mode power supply applications. The LMG2610 simplifies design, reduces component count, and reduces board space by integrating half-bridge power FETs, gate drivers, bootstrap diode, and high-side gate-drive level shifter in a 9-mm by 7-mm QFN package.

The asymmetric GaN FET resistances are optimized for ACF operating conditions. Programmable turn-on slew rates provide EMI and ringing control. The low-side current-sense emulation reduces power dissipation compared to the traditional current-sense resistor and allows the low-side thermal pad to be connected to the cooling PCB power ground.

The high-side gate-drive signal level shifter eliminates noise and burst-mode power dissipation problems found with external solutions. The smart-switched GaN bootstrap FET has no diode forward-voltage drop, avoids overcharging the high-side supply, and has zero reverse-recovery charge.

The LMG2610 supports converter light-load efficiency requirements and burst-mode operation with low quiescent currents and fast start-up times. Protection features include FET turn-on interlock, under-voltage lockout (UVLO), cycle-by-cycle current limit, and over-temperature shut down.

Key Features

650-V GaN power-FET half bridge
170-mΩ low-side and 248-mΩ high-side GaN FETs
Integrated gate drivers with low propagation delays and adjustable turn-on slew-rate control
Current-sense emulation with high-bandwidth and high accuracy
Low-side / high-side gate-drive interlock
High-side gate-drive signal level shifter
Smart-switched bootstrap diode function
High-side start up : < 8 us
Low-side / high-side cycle-by-cycle over-current protection
Over-temperature protection with FLT pin reporting
AUX idle quiescent current: 240 µA
AUX standby quiescent current: 50 µA
BST idle quiescent current: 60 µA
Maximum supply and input logic pin voltage: 26 V
9x7 mm QFN package with dual thermal pads