sip41109 Vishay, sip41109 Datasheet

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sip41109

Manufacturer Part Number
sip41109
Description
Sip41109 - Half-bridge N-channel Mosfet Driver For Dc/dc Conversion
Manufacturer
Vishay
Datasheet
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
Document Number: 73023
S-51104—Rev. A, 13-Jun-05
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
TYPICAL APPLICATION CIRCUIT
+5 to 48 V
Half-Bridge N-Channel MOSFET Driver for DC/DC Conversion
+12 V
GND
Controller
PVcc
PWM
(Tri-State)
New Product
SiP41109/41110
GND
V
CC
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
low-side drivers. In the SiP41109, the regulator supplies gate
drive voltage to the high-side driver and V
low-side driver. in the SiP41110, the regulator supplies the
high- and low-side gate drive voltage.
The SiP41109
lead (Pb)-free 8-pin SOIC package for operation over the
industrial operating range (−40 _C to 85 _C).
PHASE
UGATE
LGATE
BOOT
and SiP41110 are assembled in a
SiP41109/41110
Vishay Siliconix
CC
www.vishay.com
supplies the
V
GND
OUT
1

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sip41109 Summary of contents

Page 1

... D High Frequency DC/DC Converters D Mobile and Desktop Computer DC/DC Converters D Core Voltage Supplies for PC Micro-Processors low-side drivers. In the SiP41109, the regulator supplies gate drive voltage to the high-side driver and V low-side driver. in the SiP41110, the regulator supplies the high- and low-side gate drive voltage. ...

Page 2

... PWM mA 25_C − V − BOOT BOOT PHASE PHASE SiP41110 SiP41110 PVCC PVCC SiP41109 SiP41109 PVCC PVCC 130_C −40 to 85_C Limits Min Typ Max Unit 10.8 13.2 V 5.6 9.5 12 11.0 850 1200 mA 2 ...

Page 3

... SiP41110 LOAD 10% − 90%, V − BOOT PHASE SiP41109 LOAD See Timing Waveforms See Timing Waveforms DRV Rising or Falling Temperature Rising Temperature Falling SiP41109/41110 Vishay Siliconix Limits Min Typ Max Unit 2.3 4.2 1.9 3.5 2.9 5 1.3 2.4 2.4 4.3 1.2 2.2 45 ...

Page 4

... V PHASE LGATE 5 ORDERING INFORMATION Temperature Range −40 to 85_C −40 to 85_C Eval Kit Temperature Range SiP41109DB −40 to 85_C −40 to 85_C SiP41110DB 90% 10 90% 10% t d(on)H TRUTH TABLE PWM UGATE LGATE Tri-State L L Marking ...

Page 5

... If the PWM is left open, the pin is held to 2 internal voltage divider, thus forcing the tri-state condition. Low-Side Driver In the SiP41109, the low-side driver voltage is supplied the SiP41110, the low-side driver voltage is supplied During shutdown, LGATE is held low. ...

Page 6

... LGATE drops below 2.5 V the high-side driver is enabled and UGATE will go high after an internal propagation delay. If PHASE does not drop below 2.5 V within 380 ns after UGATE goes low, LGATE is forced high until the next PWM transition. TYPICAL CHARACTERISTICS I vs. C vs. Frequency (SiP41109) CC LOAD 105 ...

Page 7

... PWM Signal vs. HS Gate, LS Gate and PHASE (Falling) PWM 5 V/div UGate 20 V/div LGate 10 V/div V PHASE 10 V/div For related documents such as package/tape drawings, part marking, and reliability data, see SiP41109/41110 Vishay Siliconix PWM 5 V/div UGate 20 V/div LGate 10 V/div V PHASE 10 V/div 40 ns/div www.vishay.com ...

Page 8

... Information contained herein is intended to provide a product description only. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right ...

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