DATASHEET
HIP2105, HIP2106A
Low Voltage Driver for Synchronous Rectification
The HIP2105 and HIP2106A are high frequenc...
DATASHEET
HIP2105, HIP2106A
Low
Voltage Driver for Synchronous Rectification
The HIP2105 and HIP2106A are high frequency
MOSFET drivers optimized to drive two N-channel power
MOSFETs in a synchronous buck converter topology. The HIP2105 has HI/LI inputs and the HIP2106A has a single PWM input. Both these drivers, combined with Renesas multi-phase buck PWM controllers, form a complete single-stage core-
voltage regulator solution with high-efficiency performance at high switching frequency for advanced microprocessors.
The HIP2105 and HIP2106A are biased by a single low
voltage supply (5V), minimizing driver switching losses in high
MOSFET gate capacitance and high switching frequency applications. Each driver is capable of driving a 3nF load with less than 15ns rise/fall time. Bootstrapping of the upper gate driver is implemented using an internal low forward
voltage drop diode, reducing implementation cost, complexity, and allowing the use of higher performance, cost effective N-channel
MOSFETs. Adaptive shoot-through protection on the HIP2106A is integrated to prevent both
MOSFETs from conducting simultaneously.
The HIP2105 and HIP2106A feature a 4A typical sink current for the lower gate driver, enhancing the lower
MOSFET gate hold-down capability during PHASE node rising edge, preventing power loss caused by the self turn-on of the lower
MOSFET due to the high dV/dt of the switching node.
The HIP2106A also features an input that recognizes a high-impedance state, working ...