SiP41105 Vishay Siliconix, SiP41105 Datasheet

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SiP41105

Manufacturer Part Number
SiP41105
Description
Half-Bridge N-Channel MOSFET Driver
Manufacturer
Vishay Siliconix
Datasheet
DESCRIPTION
SiP41105 is a high-speed half-bridge MOSFET driver with
adaptive shoot-through protection for use in high frequency,
high current, multiphase dc-dc synchronous rectifier buck
power supplies.
frequencies up to 1 MHz. The high-side driver is bootstrapped
to allow driving n-channel MOSFETs. SiP41105 comes with
adaptive shoot-through protection to prevent simultaneous
conduction of the external MOSFETs.
Document Number: 72719
S-50265—Rev. C, 21-Feb-05
FEATURES
D 5-V Gate Drive
D Undervoltage Lockout
D Internal Bootstrap Diode
D Adaptive Shoot-Through Protection
D Syncronous MOSFET Enable
D Shutdown Control
D Adjustable HighsidePropagation Delay
D Switching Frequency Up to 1 MHz
D Drive MOSFETs In 4.5- to 50-V Systems
FUNCTIONAL BLOCK DIAGRAM
+5 to 50 V
Half-Bridge N-Channel MOSFET Driver for DC/DC Conversion
GND
+5 V
It is designed to operate at switching
Controller
SD
PWM
EN
DELAY
SYNC
New Product
AGND
SiP41105
V
DD
APPLICATIONS
D Multi-Phase DC/DC Conversion
D High Current Synchronous Buck Converters
D High Frequency Synchronous Buck Converters
D Asynchronous-to-Synchronous Adaptations
D Mobile Computer DC/DC Converters
D Desktop Computer DC/DC Converters
PGND
The SiP41105 is available in a 16-Pin TSSOP PowerPAKr
package and is specified to operate over the industrial
temperature range of −40 _C to 85 _C.
BOOT
OUT
OUT
LX
H
L
Vishay Siliconix
SiP41105
www.DataSheet4U.com
www.vishay.com
V
GND
OUT
1

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SiP41105 Summary of contents

Page 1

... D Multi-Phase DC/DC Conversion D High Current Synchronous Buck Converters D High Frequency Synchronous Buck Converters D Asynchronous-to-Synchronous Adaptations D Mobile Computer DC/DC Converters D Desktop Computer DC/DC Converters The SiP41105 is available in a 16-Pin TSSOP PowerPAKr package and is specified to operate over the industrial temperature range of − _C BOOT ...

Page 2

... SiP41105 Vishay Siliconix ABSOLUTE MAXIMUM RATINGS (ALL VOLTAGES REFERENCED TO GND = PWM, SD DELAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DD SYNC LX, BOOT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

... See Timing Waveforms See Timing Waveforms Temperature Rising Temperature Falling with external capacitor. 50% 50% 90% 10% fH 90% 10 d(off)L t d(on SiP41105 www.DataSheet4U.com Vishay Siliconix Limits = Min Typ Max 420 4 ...

Page 4

... SYNC OUT ORDERING INFORMATION Temperature Range −40 to 85_C Eval Kit Temperature Range SiP41105DB −40 to 85_C Function , the driver for the synchronus MOSFET L www.DataSheet4U.com TRUTH TABLE SD EN OUT OUT SYNC ...

Page 5

... After the voltage on OUT drops below 1 V the high-side driver is enabled and OUT go high after an internal propagation delay does not drop below 1 V within 400 ns after OUT high until the next PWM transition. SiP41105 www.DataSheet4U.com Vishay Siliconix BOOT OUT ...

Page 6

... SiP41105 Vishay Siliconix Delay The addition of a capacitor between DELAY and GND will increase the propagation delay time for OUT Delay capacitance may be added to prevent shoot through current in the low-side MOSFET due to the finite time between OUT going low and the continuing conduction of the low-side L MOSFET ...

Page 7

... V/div Delay EN SYNC 5 V/div HS Gate 5 V/div LS Gate 5 V/div For related documents such as package/tape drawings, part marking, and reliability data, see SiP41105 www.DataSheet4U.com Vishay Siliconix PWM Signal vs. LX (Falling) Figure 3. 50 ns/div PWM Signal vs. HS Gate Figure 5. and LS Gate (Falling) 50 ns/div www.vishay.com ...

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