SI9976 データシートの表示（PDF） - Vishay Semiconductors
部品番号
コンポーネント説明
メーカー
SI9976 Datasheet PDF : 7 Pages
| |||
End of Life. Last Available Purchase Date is 31-Dec-2014
Si9976
Vishay Siliconix
N-Channel Half-Bridge Driver
FEATURES
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
APPLICATIONS
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+3
VDD4
VCC 7
8
FAULT
Low Voltage
Regulator
Under Voltage
Lockout 2
Bootstrap
Regulator
Charge
Pump
Short Circuit
& UVL Detect
IN 5
0.01 mF
EN 6
10
GND
Substrate
R
S
Q
Enable Latch
Under Voltage
VDD
Lockout 1
250 ns
Delay
300 ns
Delay
V+
2 CAP
CBoot
12 G1
13 S1
Half-
Bridge
Output
9 G2
Document Number: 70016
S-40757—Rev. F, 19-Apr-04
GND
www.vishay.com
1
Share Link: 