SI9119DB Vishay, SI9119DB Datasheet

no-image

SI9119DB

Manufacturer Part Number
SI9119DB
Description
Pulse Width Modulation (PWM) Controller IC
Manufacturer
Vishay
Datasheets

Specifications of SI9119DB

Silicon Manufacturer
Vishay
Application Sub Type
Switch Mode
Kit Application Type
Power Management
Silicon Core Number
SI9119
Kit Contents
Board
Input Voltage Primary Min
10V
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
DESCRIPTION
The Si9120 is a BiC/DMOS integrated circuit designed for use
in low-power, high-efficiency off-line power supplies.
High-voltage DMOS inputs allow the controller to work over a
wide range of input voltages (10- to 450-VDC). Current-mode
PWM control circuitry is implemented in CMOS to reduce
quiescent current to less than 1.5 mA.
A CMOS output driver provides high-speed switching for
MOSFET devices with gate charge, Q
Applications information, see AN707 and AN708.
Document Number: 70006
S-42042—Rev. H, 15-Nov-04
FEATURES
D 10- to 450-V Input Range
D Current-Mode Control
FUNCTIONAL BLOCK DIAGRAM
V
+V
BIAS
V
REF
CC
IN
11
16
7
1
Pre-Regulator/Start-Up
Current
Sources
Gen
Ref
FB
+
15
Universal Input Switchmode Controller
4 V (1%)
+
Amplifier
8.1 V
Error
8.6 V
Internal
Circuits
To
COMP
g
, up to 25 nC, enough
2 V
14
+
1.2 V
D 125-mA Output Drive
D Internal Start-Up Circuit
DISCHARGE
+
+
Undervoltage Comparator
10
Current-Mode
Comparator
Comparator
C/L
OSC
9
IN
OSC
to supply 30 W of output power at 100 kHz. These devices,
when combined with an output MOSFET and transformer, can
be used to implement single-ended power converter
topologies (i.e., flyback and forward).
The Si9120 is available in both standard and lead (Pb)-free
16-pin plastic DIP and SOIC packages which are specified to
operate over the industrial temperature range of −40 _C to
85 _C.
OSC
OUT
Clock (
R
S
8
Q
1
/
2
f
OSC
Q
)
D Internal Oscillator (1 MHz)
D SHUTDOWN and RESET
S
R
V
CC
V
To
CC
12
13
Vishay Siliconix
4
5
6
SHUTDOWN
RESET
SENSE
OUTPUT
−V
IN
www.vishay.com
Si9120
1

Related parts for SI9119DB

SI9119DB Summary of contents

Page 1

... OSC OSC DISCHARGE IN OUT OSC Clock ( 2 V Current-Mode − Comparator C/L − Comparator 1.2 V Undervoltage Comparator − + Vishay Siliconix D Internal Oscillator (1 MHz) D SHUTDOWN and RESET OSC Q 5 OUTPUT 6 − SENSE SHUTDOWN RESET R Si9120 www ...

Page 2

... Si9120 Vishay Siliconix ABSOLUTE MAXIMUM RATINGS Voltages Referenced to −V (Note: V < Logic Inputs (RESET SHUTDOWN, OSC IN, OSC OUT Linear Input (FEEDBACK, SENSE, BIAS REF HV Pre-Regulator Input Current (continuous Continuous Output Current (Source or Sink Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

... OUT OUT mA, Source or Sink OUT OUT 500 pF = 500 (Pin1). IN (Pin1). IN (Pin 1) and −V (Pin 6). IN Si9120 Vishay Siliconix LIMITS D Suffix −40 to 85_C Unit TEMP MIN TYP MAX Room 1000 2000 Room −2.0 −1 Room 0.12 0.15 Room 50 70 Room 1.0 1.2 1 ...

Page 4

... Si9120 Vishay Siliconix TIMING WAVEFORMS 1.5 V − SENSE 50 90% OUTPUT 0 − FIGURE 50% SHUTDOWN 0 − RESET 0 − TYPICAL CHARACTERISTICS www.vishay.com 50 50% FIGURE 3. Output Switching Frequency vs. Oscillator Resistance 1 M 100 100 k r − Oscillator Resistance (W) OSC SHUTDOWN 50% 0 − 90% CC OUTPUT 0 − FIGURE 2. ...

Page 5

... To properly set the bias for the Si9120, a 390-kW resistor should be tied from BIAS (pin 16) to −V determines the magnitude of bias current in all of the analog sections and the pull-up current for the SHUTDOWN and RESET pins. The current flowing in the bias resistor is nominally 15 mA. Vishay Siliconix SOIC BIAS ...

Page 6

... Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon Technology and Package Reliability represent a composite of all qualified locations. ...

Page 7

... Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay’ ...

Related keywords