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說明

The UCC27200/1 family of high-frequency N-channel MOSFET drivers include a 120-V bootstrap diode and high-side/low-side driver with independent inputs for maximum control flexibility. This allows for N-channel MOSFET control in half-bridge, full-bridge, two-switch forward, and active clamp forward converters. The low-side and the high-side gate drivers are independently controlled and matched to 1 ns between the turn-on and turn-off of each other.

An on-chip bootstrap diode eliminates the external discrete diodes. Undervoltage lockout is provided for both the high-side and the low-side drivers, forcing the outputs low if the drive voltage is below the specified threshold.

Two versions of the UCC2720x are offered — the UCC27200 has high-noise-immune CMOS input thresholds, and the UCC27201 has TTL-compatible thresholds.

特性

• Qualified for Automotive Applications
• Specified from -40°C to 140°C
• Drives Two N-Channel MOSFETs in High-Side/Low-Side Configuration
• Maximum Boot Voltage 120 V
• Maximum V_DD Voltage 20 V
• On-Chip 0.65-V VF, 0.6-Ω RD Bootstrap Diode
• Greater than 1 MHz of Operation
• 20-ns Propagation Delay Times
• 3-A Sink, 3-A Source Output Currents
• 8-ns Rise/7-ns Fall Time with 1000-pF Load
• 1-ns Delay Matching
• Undervoltage Lockout for High-Side and Low-Side Driver
• APPLICATIONS
  • Power Supplies for Telecom, Datacom, and Merchant Markets
  • Half-Bridge Applications and Full-Bridge Converters
  • Isolated Bus Architecture
  • Two-Switch Forward Converters
  • Active-Clamp Forward Converters
  • High-Voltage Synchronous-Buck Converters
  • Class-D Audio Amplifiers