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SI9976DY-T1-E3 データシート(PDF) 1 Page - Vishay Siliconix

部品番号 SI9976DY-T1-E3
部品情報  N-Channel Half-Bridge Driver
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メーカー  VISHAY [Vishay Siliconix]
ホームページ  http://www.vishay.com
Logo VISHAY - Vishay Siliconix

SI9976DY-T1-E3 データシート(HTML) 1 Page - Vishay Siliconix

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Si9976
Vishay Siliconix
Document Number: 70016
S-40757—Rev. F, 19-Apr-04
www.vishay.com
1
N-Channel Half-Bridge Driver
FEATURES
APPLICATIONS
D Single Input for High-Side and Low-Side MOSFETs
D 20- to 40-V Supply
D Static (dc) Operation
D Cross-Conduction Protected
D Undervoltage Lockout
D ESD and Short Circuit Protected
D Fault Feedback
D Power Supplies
D Motor Drives
D Office Automation
D Computer Peripherals
D Industrial Controllers
D Robotics
D Medical Equipment
DESCRIPTION
The Si9976 is an integrated driver for an n-channel MOSFET
half-bridge. Schmitt trigger inputs provide logic signal
compatibility and hysteresis for increased noise immunity. An
internal low-voltage regulator allows the device to be powered
directly from a system supply of 20 to 40 volts. Both half-bridge
n-channel gates are driven directly with low-impedance
outputs. Addition of one external capacitor allows an internal
circuit to level shift both the power supply and logic signal for
the half-bridge high-side n-channel gate drive. An internal
charge pump replaces leakage current lost in the high-side
driver circuit to provide “static” (dc) operation in any output
condition.
Protection features include an undervoltage
lockout, cross-conduction prevention logic, and a short circuit
monitor.
The Si9976 is available in both standard and lead (Pb)-free,
14-pin SOIC (surface mount) packages, specified to operate
over the industrial (−40 to 85_C) temperature range.
FUNCTIONAL BLOCK DIAGRAM
V+
IN
EN
GND
VDD
VCC
FAULT
R
SQ
VDD
CAP
S1
G2
G1
V+
CBoot
GND
0.01 mF
3
4
7
8
5
6
10
2
13
12
9
Bootstrap
Regulator
Half-
Bridge
Output
Under Voltage
Lockout 2
Charge
Pump
Under Voltage
Lockout 1
Short Circuit
& UVL Detect
250 ns
Delay
300 ns
Delay
Substrate
Enable Latch
Low Voltage
Regulator


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