ایزولاتور ایزولاتور- درایور گیت

Product Attributes

Introduction

The STGAP3S is a family of protected single gate drivers that provides galvanic isolation between the gate driving channel and the low voltage control and interface circuitry. The platform includes different options with 10 A and 6 A current capability, each of which is available with dedicated UVLO variants for SiC MOSFETs and IGBTs. Ultrafast desaturation protection is also available with differentiated intervention thresholds and adjustable soft turn-off. The availability of the Miller CLAMP and optional negative driving enables optimal driving performance.

The STGAP3S is a family of fully protected single gate drivers with integrated galvanic isolation that relies on state-of-the-art capacitive communication. The device is able to work with high voltage rails up to 1200 V and is offered in several variants with 6 A and 10 A output current capability and dedicated UVLO and DESAT options for IGBTs and SiC MOSFETs. The control interface side consists of two gate drive input pins (IN+_,IN-), a fault reset and shutdown input pin (RST), and two open drain output pins for desaturation protection (DIAG) and for UVLO and overtemperature protections (RDY). The dual inputs pins allow the selection of gate driving control signal polarity control and the implementation of HW interlocking protection to avoid cross conduction in case of controller malfunction. The driving side consists of the gate control pin (GOUT), the desaturation protection pin (DESAT), a pin for adjustable soft turn-off protection (SOFTOFF) and a pin for the optional negative supply pin (VL). The ultrafast DESAT protection event is latched and a turn-off strategy can be implemented by the tunable SOFTOFF function, to maximize the protection turn-off speed while avoiding excessive collector overvoltage spikes. The fault condition is notified to the control device by an open drain diagnostic pin (DIAG). The undervoltage lock out (UVLO) feature prevents the external power switch to be actuated with insufficient gate voltage, the UVLO event is notified through a diagnostic open drain pin (RDY). The Miller clamp driver function enables the use of fast switching speeds while preventing the unwanted induced turn-on side effect.

Features

• High voltage rail up to 1200 V
• Driver current capability: 6/10 A sink/source @25 ℃
• ±200 V/ns Common Mode Transient Immunity (CMTI)
• 75 ns input-output propagation delay
• Miller CLAMP driver for external N-channel MOSFET 0.3 A source/0.5 A sink
• Adjustable soft turn-off function
• VDD UVLO
• VH UVLO: IGBT and SiC variants
• Desaturation protection: IGBT and SiC variants
• Gate driving voltage up to 32 V
• Negative gate driving voltage up to -10 V
• 3.3 V, 5 V TTL/CMOS inputs with hysteresis
• Temperature shutdown protection
• Reinforced galvanic isolation: Isolation voltage VISO = 5.7 kVrms (UL 1577) Transient Overvoltage VIOTM = 8 kVPEAK (IEC 60747-17) Max. Repetitive Isolation Voltage VIORM = 1.2 kVPEAK (IEC 60747-17)
• Wide body SO-16W package

Applications

• Motor driver for home appliances, factory automation, industrial drives, and fans
• 600/1200 V inverters
• Battery chargers
• Induction heating
• Welding
• UPS
• Power supply units
• DC-DC converters
• Power factor correction