Galvanically isolated high current gate drivers

NCx5700x is a high−current single channel IGBT driver with internal galvanic isolation, designed for high system efficiency and reliability in high power applications. Its features include complementary inputs, open drain FAULT and Ready outputs, active Miller clamp, accurate UVLOs, DESAT protection, soft turn-off at DESAT, and separate high and low (OUTH and OUTL) driver outputs for system design convenience. NCx5700x accommodates both 5V and 3.3V signals on the input side and wide bias voltage range on the driver side including negative voltage capability. NCx5700x provides > 5 kVrms (UL1577 rating) galvanic isolation and > 1200 Viorm (working voltage) capabilities. NCx5700x is available in the wide-body SOIC-16 package with guaranteed 8 mm creepage distance between input and output to fulfill reinforced safety insulation requirements.

NCx57200 is a high voltage gate driver with one non−isolated low side gate driver and one galvanic isolated high or low side gate driver. It can directly drive two IGBTs in a half bridge configuration. Isolated high side driver can be powered with an isolated power supply or with Bootstrap technique from the low side power supply. The galvanic isolation for the high side gate driver guarantees reliable switching in high power applications for IGBTs that operate up to 800 V, at high dv/dt. The optimized output stages provide a mean of reducing IGBT losses. Its features include two independent inputs with deadtime and interlock, accurate asymmetric UVLOs, and short and matched propagation delays. The NCx57200 operates with its VCC/VB up to 20 V.

Features

• High Peak Current Output (+1.9A/-2.3 A) and (+4A/-6A)
• Reliable Operation for Vs Negative Swing to -800V
• Galvanic Isolated High Side Driver
• Dead-time & Interlock protection
• CMTI up to 50 kV/us
• Secured Output Low State without VDD/VB
• VDD/VB Supply Range up to 20 V
• Short Propagation Delays with Accurate Matching
• DESAT with Soft Turn Off
• Active Miller Clamp and Negative Gate Voltage
• High Transient & Electromagnetic Immunity
• 5 kV Galvanic Isolation

Benefits

• Improves system efficiency
• Eliminates the need for protection circuit at Half-Bridge node and offers PCB layout flexibility
• Improves safety and noise immunity
• Prevents shoot through failures
• Reliable operation in high voltage and fast switching applications
• Prevents unintended turn-on during system power up
• Offers design flexibility by accepting commonly available and not so tightly regulated supplies
• Improves PWM signal integrity
• Protection against overload and short circuits
• Prevents spurious gate turn-on
• Ruggedness in fast slew rate high voltage and high current switching applications
• Galvanic isolation to separate high voltage and low voltage sides to provide safety and protection

Applications

• Fans, Pumps
• Home Appliances
• Consumer Electronics
• General Purpose Half Bridge Applications
• Solar Inverters
• Motor Control
• UPS
• Industrial Power Supplies
• Welding

End Products

• IH Cookers
• White Goods
• Power Supplies - Servers & Workstations
• Industrial Motors
• Commercial HVAC
• Data Center and Server Power Supplies

Parts List:

• NCD57000
• NCD57001
• NCD57200
• NCV57000
• NCV57001
• NCV57200