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SI9111DY-T1-E3 数据表(PDF) 1 Page - Vishay Siliconix

部件名 SI9111DY-T1-E3
功能描述  High-Voltage Switchmode Controllers
Download  9 Pages
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制造商  VISHAY [Vishay Siliconix]
网页  http://www.vishay.com
标志 VISHAY - Vishay Siliconix

SI9111DY-T1-E3 数据表(HTML) 1 Page - Vishay Siliconix

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Vishay Siliconix
Si9110, Si9111
Document Number: 70004
S11-0975-Rev. I, 16-May-11
www.vishay.com
1
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
High-Voltage Switchmode Controllers
FEATURES
10 V to 120 V Input Range
Current-Mode Control
High-Speed, Source-Sink Output Drive
High Efficiency Operation (> 80 %)
Internal Start-Up Circuit
Internal Oscillator (1 MHz)
SHUTDOWN and RESET
Reference Selection
Si9110 - ± 1 %
Si9111 - ± 10 %
DESCRIPTION
The
Si9110/9111
are
BiC/DMOS
integrated
circuits
designed
for
use
as
high-performance
switchmode
controllers. A high-voltage DMOS input allows the controller
to work over a wide range of input voltages (10 to 120 VDC).
Current-mode PWM control circuitry is implemented in
CMOS to reduce internal power consumption to less than
10 mW.
A push-pull output driver provides high-speed switching for
MOSPOWER devices large enough to supply 50 W of output
power. When combined with an output MOSFET and
transformer, the Si9110/9111 can be used to implement
single-ended power converter topologies (i.e., flyback,
forward, and cuk).
The Si9110/9111 are available in both standard and lead
(Pb)-free 14-pin plastic DIP and SOIC packages which are
specified to operate over the industrial temperature range of
- 40 °C to 85 °C.
FUNCTIONAL BLOCK DIAGRAM
+
-
+
+
-
+
-
+
-
FB
COMP
DISCHARGE
OSC
14
13
9
8
7
2 V
Ref
Gen
R
S
Q
R
S
Q
SENSE
3
5
4
11
12
Current-Mode
Comparator
C/L
1.2 V
Undervoltage
RESET
8.1 V
8.6 V
BIAS
Current
Sources
To
Internal
Circuits
10
1
6
2
Comparator
Error
Amplifier
VREF
VCC
+VIN
VCC
SHUTDOWN
4 V
OSC
OUT
OSC
IN
- VIN
Pre-Regulator/Start-Up
OUTPUT
To
VCC
Comparator
Clock (1/2 fOSC)
-


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