LM5109A

LM5109A High Voltage 1A Peak Half Bridge Gate Driver April 2006 LM5109A High Voltage 1A Peak Half Bridge Gate Driver General Description The LM5109A is a cost effective, high voltage gate driver designed to drive both the high-side and the low-side N-Channel MOSFETs in a synchronous buck or a half bridge configuration. The floating high-side driver is capable of working with rail voltages up to 90V. The outputs are independently controlled with TTL compatible input thresholds. The robust level shift technology operates at high speed while consuming low power and providing clean level transitions from the control input logic to the high-side gate driver. Under-voltage lockout is provided on both the lowside and the high-side power rails. The device is available in the SOIC-8 and the thermally enhanced LLP-8 packages. n n n n n n n Bootstrap supply voltage to 108V DC Fast propagation times (30 ns typical) Drives 1000 pF load with 15ns rise and fall times Excellent propagation delay matching (2 ns typical) Supply rail under-voltage lockout Low power consumption Pin compatible with ISL6700 Typical Applications n n n n Current Fed push-pull converters Half and Full Bridge power converters Solid state motor drives Two switch forward power converters Features n Drives both a high-side and low-side N-Channel MOSFET n 1A peak output current (1.0A sink / 1.0A source) n Independent TTL compatible inputs Package n SOIC-8 n LLP-8 (4 mm x 4 mm) Simplified Block Diagram 20170201 FIG...