SIP41109 Datasheet, PDF (1/7 Pages) Vishay Siliconix – Half-Bridge N-Channel MOSFET Driver for DC/DC Conversion

New Product
SiP41109/41110
Vishay Siliconix
Half-Bridge N-Channel MOSFET Driver for DC/DC Conversion
FEATURES
D PWM With Tri-State Enable
D 12-V Low-Side Gate Drive (SiP41109)
D 8-V Low-Side Gate Drive (SiP41110)
D Undervoltage Lockout
D Internal Bootstrap Diode
D Switching Frequency Up to 1 MHz
D 30-ns Max Propagation Delay
D Drive MOSFETs In 5- to 48-V Systems
D Adaptive Shoot-Through Protection
APPLICATIONS
D Multi-Phase DC/DC Conversion
D High Current Low Voltage DC/DC Converters
D High Frequency DC/DC Converters
D Mobile and Desktop Computer DC/DC Converters
D Core Voltage Supplies for PC Micro-Processors
DESCRIPTION
The SiP41109 and SiP41110 are high-speed half-bridge
MOSFET drivers for use in high frequency, high current,
multiphase dc-to-dc synchronous rectifier buck power
supplies. They are designed to operate at switching
frequencies up to 1 MHz. The high-side driver is bootstrapped
to allow driving n-channel MOSFETs.
They feature adaptive shoot-through protection to prevent
simultaneous conduction of the external MOSFETs. There are
two options available for the voltage of the high-side and
TYPICAL APPLICATION CIRCUIT
+5 to 48 V
+12 V
low-side drivers. In the SiP41109, the regulator supplies gate
drive voltage to the high-side driver and V_CC supplies the
low-side driver. in the SiP41110, the regulator supplies the
high- and low-side gate drive voltage.
The SiP41109 and SiP41110 are assembled in a
lead (Pb)-free 8-pin SOIC package for operation over the
industrial operating range (−40 _C to 85 _C).
PVcc
V_CC
BOOT
Controller
UGATE
SiP41109/41110
PWM
(Tri-State)
PHASE
V_OUT
LGATE
GND
Document Number: 73023
S-51104—Rev. A, 13-Jun-05
GND
GND
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