SI9120DJ Vishay, SI9120DJ Datasheet

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SI9120DJ

Manufacturer Part Number
SI9120DJ
Description
IC, UNIVERSAL PWM CONTROLLER, 16-DIP
Manufacturer
Vishay
Datasheet

Specifications of SI9120DJ

Primary Input Voltage
450V
No. Of Outputs
1
Output Voltage
9.7V
Output Current
125mA
No. Of Pins
16
Operating Temperature Range
-40°C To +85°C
Power Dissipation Pd
750mW
Number Of Outputs
1
Mounting Style
Through Hole
Package / Case
PDIP-16
Switching Frequency
3000 KHz
Maximum Operating Temperature
+ 85 C
Fall Time
75 ns
Minimum Operating Temperature
- 40 C
Rise Time
40 ns
Synchronous Pin
No
Topology
Flyback, Forward, Push-Pull
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SI9120DJ
Quantity:
5 510
Part Number:
SI9120DJ-E3
Manufacturer:
VISHAY
Quantity:
2 147
Company:
Part Number:
SI9120DJ-E3
Quantity:
70 000
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

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SI9120DJ 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

... Top View Part Number Si9120DY Si9120DY-T1 Si9120DY-T1—E3 Si9120DJ Si9120DJ—E3 DETAILED DESCRIPTION Pre-Regulator/Start-Up Section Due to the low quiescent current requirement of the Si9120 control circuitry, bias power can be supplied from the unregulated input power source, from an external regulated low-voltage supply, or from an auxiliary “bootstrap” winding on the output inductor or transformer ...

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’ ...

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