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Si9912

Features: `4.5- to 5.5-V Operation`Undervoltage Lockout`250-kHz to 1-MHz Switching Frequency`Shutdown Quiescent Current <5 A`One Input PWM Signal Generates Both Drive`Bootstrapped High-Side Drive`Operates from 4.5- to 30-V Supply` TTL/CMOS Compatible Input Levels`1-A Peak Drive Current`Break-Be...

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SeekIC No. : 004490982 Detail

Si9912: Features: `4.5- to 5.5-V Operation`Undervoltage Lockout`250-kHz to 1-MHz Switching Frequency`Shutdown Quiescent Current <5 A`One Input PWM Signal Generates Both Drive`Bootstrapped High-Side Drive...

Si9912 Data Sheet

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Part Number:
Si9912
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/4/29

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Product Details

Description



Features:

`4.5- to 5.5-V Operation
`Undervoltage Lockout
`250-kHz to 1-MHz Switching Frequency
`Shutdown Quiescent Current <5 A
`One Input PWM Signal Generates Both Drive
`Bootstrapped High-Side Drive
`Operates from 4.5- to 30-V Supply
` TTL/CMOS Compatible Input Levels
`1-A Peak Drive Current
`Break-Before-Make Circuit




Application

·Multiphase Desktop CPU Supplies
· Single-Supply Synchronous Buck Converters
· Mobile Computing CPU Core Power Converters
· Standard-Synchronous Converters
·High Frequency Switching Converters




Pinout

Connection Diagram




Specifications

Parameter Symbol Limit Unit
Low Side Driver Supply Voltage VDD 7.0 V
Input Voltage on IN VIN −0.3 to VDD +0.3
Shutdown Pin Voltage VSD −0.3 to VDD +0.3
Bootstrap Voltage VBOOT 35.0
High Side Driver (Bootstrap) Supply Voltage VBOOT − VS 7.0
Operating Junction Temperature Range TJ −40 to 125
Storage Temperature Range Tstg −40 to 150
Power Dissipation (Note a and b) PD 830 mW
Thermal Impedance JA 125 /W
Lead Temperature (soldering 10 Sec) 300





Description

The Si9912 is a dual MOSFET high-speed driver with break-before-make. It is designed to operate in high frequency dc-dc switchmode power supplies. The high-side driver is bootstrapped to handle the high voltage slew rate associated with "floating" high-side gate drivers. Each driver is capable of switching a 3000-pF load with 60-ns propogation delay and 25-ns transition time. The Si9912 comes with an internal break-before-make feature to prevent shoot-through current in the external MOSFETs. A shutdown pin is used to enable thedriver. When disabled, the quiescent current of the driver is less than 5 A.

The Si9912 is available in both standard and lead (Pb)-free, 8-pin SOIC packages for operation over the industrial operation range (−40 to 85).






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