L6388ED

Hersteller: STMicroelectronics

Device Type: High voltage half-bridge gate driver integrated circuit, surface mount SO8 packaged, built for driving N-channel power MOSFETs and IGBTs in offline AC-DC power conversion circuits

Fixed supply voltage range: 9.1 V to 17 V

Maximum floating high-side rail voltage: 600 V

Peak sourcing gate current: 400 mA

Peak sinking gate current: 650 mA

Typical signal rise time: 70 ns, typical fall time: 40 ns under 1 nF capacitive load

Internal quiescent operating current: 350 μA

Full-range dV/dt noise immunity: ±50 V/ns

Operating ambient temperature range: -40 °C to 125 °C

Maximum allowable junction temperature: 150 °C

Package form: 8-pin narrow SOIC surface mount housing

Fabricated with proprietary offline BCD semiconductor process, integrating independent high-side floating drive channel and low-side referenced drive channel to form a complete half-bridge driving unit. An embedded bootstrap diode eliminates the requirement for an external discrete bootstrap diode, simplifying peripheral circuit layout and reducing overall component count.

Internal hardware interlock and adjustable dead time circuitry prevent simultaneous conduction of upper and lower power switches, thoroughly avoiding shoot-through short-circuit damage inside the half-bridge topology. Output signals maintain identical phase relation with input logic signals for straightforward pulse width modulation control configuration.

Logic input pins support both 3.3 V and 5 V TTL/CMOS voltage levels, equipped with built-in hysteresis and pull-down resistors to restrain false triggering caused by electromagnetic interference. All input and output pins carry reinforced electrostatic protection for stable performance in high-frequency switching environments.

Integrated undervoltage lockout function automatically cuts off all gate drive outputs once the chip supply voltage drops below the valid threshold, ensuring safe startup and shutdown sequences for power systems. The floating high-side drive section features strong noise suppression capability against high voltage switching interference.

Compact pin assignment fits conventional half-bridge power supply layouts, delivering fast switching speed to minimize power tube switching loss and elevate overall power conversion efficiency.

LCD television and large display resonant switching power supplies

Desktop computer half-bridge main power modules

Induction cooker small resonant inverter drive circuits

LED high-power constant current drive power supplies

Industrial offline low to medium power AC-DC converters

Small household appliance switching power supply control systems