SiP41108 Vishay Siliconix, SiP41108 Datasheet

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SiP41108

Manufacturer Part Number
SiP41108
Description
Half-Bridge N-Channel Programmable 1-A MOSFET Driver
Manufacturer
Vishay Siliconix
Datasheet
DESCRIPTION
SiP41108 is a high-speed half-bridge MOSFET driver with
adaptive shoot-through protection for use in high frequency,
high current, multiphase dc-to-dc synchronous rectifier buck
power supplies.
frequencies up to 1 MHz. The high-side driver is bootstrapped
to allow driving n-channel MOSFETs. SiP41108 comes with
adaptive shoot-through protection to prevent simultaneous
conduction of the external MOSFETs.
Document Number: 73373
S-51104—Rev. B, 13-Jun-05
FEATURES
D 8-V or 12-V Low-Side Gate Drive
D Undervoltage Lockout
D Internal Bootstrap Diode
D Adaptive Shoot-Through Protection
D Synchronous MOSFET Disable
D Shutdown Control
D Adjustable High-Side Propagation Delay
D Switching Frequency Up to 1 MHz
D Drive MOSFETs In 5- to 48-V Systems
FUNCTIONAL BLOCK DIAGRAM
DC/DC Conversion with Adjustable High Side Propagation Delay
+5 to 48 V
Half-Bridge N-Channel Programmable 1-A MOSFET Driver for
GND
+12 V
It is designed to operate at switching
Controller
PWM
EN
DELAY
V
SD
DRV
SYNC
8-V High-Side and 12-V Low−Side Gate Drive Configuration
New Product
PV
DD
SiP41108
GND
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
The high-side turn on delay is programmable via an external
capacitor. The 8-V regulator sets the high-side gate drive. The
low-side driver supply, PV
either V
The SiP41108 is assembled in a lead (Pb)-free PowerPAKr
TSSOP-16 package and is specified to operate over the
industrial operating range of −40°C to 85°C.
BOOT
OUT
OUT
LX
H
L
DRV
or V
DD
for 8-V or 12-V gate drive respectively.
DD
, must be externally connected to
Vishay Siliconix
SiP41108
www.DataSheet4U.com
www.vishay.com
V
GND
OUT
1

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SiP41108 Summary of contents

Page 1

... The 8-V regulator sets the high-side gate drive. The low-side driver supply, PV either for 8-V or 12-V gate drive respectively. DRV DD The SiP41108 is assembled in a lead (Pb)-free PowerPAKr TSSOP-16 package and is specified to operate over the industrial operating range of −40°C to 85° ...

Page 2

... SiP41108 Vishay Siliconix ABSOLUTE MAXIMUM RATINGS (ALL VOLTAGES REFERENCED TO GND = PWM DELAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . DD SYNC LX, BOOT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BOOT Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied ...

Page 3

... VDD LOAD See Timing Waveforms See Timing Waveforms DRV DRV DRV DD LX Falling Temperature Rising Temperature Falling SiP41108 Vishay Siliconix www.DataSheet4U.com Limits Min Typ Max Unit 2.3 4.2 1.9 3.5 2.9 5 DRV DRV 1.3 2.4 2.4 4 ...

Page 4

... NC PWM SYNC 13 V DRV OUT SiP41108DB Marking 41108 Function for 8-V Gate Drive DRV , the driver for the synchronous MOSFET L www.DataSheet4U.com 90% 10 90% 10% t d(on)H TRUTH TABLE SD EN OUT SYNC ...

Page 5

... V and GND. During DD integrated bootstrap diode. V bootstrap capacitor and can be used to power the low-side driver. The V bypass the 8-V regulator and allow 12-V high-side gate drive connected to V DRV exceed 43 V. SiP41108 Vishay Siliconix www.DataSheet4U.com BOOT OUT H UVLO LX − BBM (2 ...

Page 6

... SiP41108 Vishay Siliconix Bootstrap Circuit The internal bootstrap diode and a bootstrap capacitor form a charge pump that supplies voltage to the BOOT pin. An integrated bootstrap diode replaces the external Schottky diode needed for the bootstrap circuit; only a capacitor is necessary to complete the bootstrap circuit. The bootstrap ...

Page 7

... Figure 3. PWM Signal vs. HS Gate, LS Gate and LX (Falling) PWM IN 5 V/div OUT Gate H 20 V/div OUT Gate L 10 V/div V/div For related documents such as package/tape drawings, part marking, and reliability data, see SiP41108 Vishay Siliconix www.DataSheet4U.com I vs. C vs. Frequency (PV DD LOAD ...

Page 8

Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc., or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description ...

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