ISL6700

Features:

• Drives 2 N-Channel MOSFETs in Half-Bridge Configuration
• Space Saving SO8 and Low RC-S QFN Packages
• Phase Supply Max Voltage to 80VDC
• Bootstrap Supply Max Voltage to 96VDC
• Drives 1000pF Load with Rise and Fall Times Typ. 15ns
• TTL/CMOS Compatible Input Thresholds
• Independent Inputs for Non-Half-Bridge Topologies
• No Start-Up Problems
• Low Power Consumption
• Wide Supply Range
• Supply Undervoltage Protection
• QFN Package
- Compliant to JEDEC PUB95 MO-220 QFN
- Quad Flat No Leads - Package Outline
• Pb-Free Available (RoHS Compliant)




Application

• Telecom/Datacom Power Supplies
• Half-Bridge Converters
• Two-Switch Forward Converters
• Active Clamp Forward Converters




Pinout






Specifications

Supply Voltage, VDD (Note 1) . . . . . . . . . . . .. . . . . . -0.3V to 16V
LI and HI Voltages (Note 1) . . . . . . . . . . .. . . . -0.3V to VDD +0.3V
Voltage on HS (Note 1) . . . . . . . . . . . . . .. . . . . . . . . . . 0V to 80V
Voltage on HB (Note 1) . . . . . . . . . . . . . . . VHS-0.3V to VHS+VDD
Voltage on LO (Note 1) . . . . . . . . . . . . . . . . VSS-0.3 to VDD+0.3V
Voltage on HO (Note 1) . . . . . . . . . . . . . . . VHS-0.3V to VHB+0.3V
Phase Slew Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20V/ns




Description

The ISL6700 is an 80V/1.25A peak, medium frequency, low cost, half-bridge driver IC available in 8-lead SOIC and 12-lead QFN plastic packages. The low-side and high-side gate drivers are independently controlled and matched to 25ns. This gives the user maximum flexibility in dead-time selection and driver protocol. Undervoltage protection on both the low-side and high-side supplies force the outputs low. Non-latching, level-shift translation is used to control the upper drive circuit. Unlike some competitors, the high-side output returns to its correct state after a momentary undervoltage of the high-side supply.