SI9114ADY Vishay, SI9114ADY Datasheet

IC, PWM CONTROLLER, SOIC-14

SI9114ADY

Manufacturer Part Number
SI9114ADY
Description
IC, PWM CONTROLLER, SOIC-14
Manufacturer
Vishay
Datasheet

Specifications of SI9114ADY

Primary Input Voltage
200V
No. Of Outputs
1
Output Voltage
9.9V
Output Current
10mA
No. Of Pins
14
Operating Temperature Range
-40°C To +85°C
Power Dissipation Pd
900mW
Termination Type
SMD
Number Of Outputs
1
Mounting Style
SMD/SMT
Package / Case
SOIC-14 Narrow
Switching Frequency
2000 KHz
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Synchronous Pin
Yes
Topology
Flyback, Forward
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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DESCRIPTION
The Si9114A is a BiC/DMOS current-mode pulse width
modulation (PWM) controller IC for high-frequency dc/dc
converters. Single-ended topologies (forward and flyback) can
be implemented at frequencies up to 1 MHz. The oscillator has
an internal divide-by-two that limits the duty ratio to 50%. An
oscillator sync output allows converters to be synchronized in
phase as well as in frequency, in a master/slave configuration.
The output inverter can typically source 500 mA and sink
700 mA. Shoot-through current is all but eliminated to minimize
supply current requirements.
Document Number: 70025
S-42044—Rev. E, 15-Nov-04
FEATURES
D 15- to 200-V Input Range
D Current-Mode Control
FUNCTIONAL BLOCK DIAGRAM
V
+V
V
REF
CC
SS
IN
NI
14
4
3
7
1
FB
High-Frequency Switchmode Controller
5
Amplifier
Error
+
Gen
COMPENSATION
Ref
4.6 V
20 mA
+
6
−V
IN
D Internal Start-Up Circuit
D Latched SHUTDOWN
CURRENT
+
+
2 V
SENSE
1.25 V
0.2 V
13
+
+
9.2 V
+
Undervoltage
Lockout
SYNC
The high-voltage DMOS transistor allows the IC to interface
directly to bus voltages up to 200 V. Other features include a
1.5% accurate voltage reference, 1.8-MHz (min) bandwidth
error amplifier, shutdown logic control, soft-start and
undervoltage lockout circuits.
The Si9114A is available in both standard and lead (Pb)-free
14-pin plastic DIP and SOIC packages, and is specified over
the industrial, D suffix (−40_C to 85_C) temperature range.
10
S
R
Q
Q
Enable
S
R
Substrate
B 2
D Soft-Start
D 1.8-MHz Error Amp
OSC
Out
20 mA
R
OSC
OSC
V
8
CC
C
OSC
Vishay Siliconix
9
12
11
2
DRIVER
OUTPUT
−V
SHUTDOWN
IN
Si9114A
www.vishay.com
1

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SI9114ADY Summary of contents

Page 1

... D suffix (−40_C to 85_C) temperature range. CURRENT SYNC SENSE − + − − 1.25 V −V IN − + − Undervoltage 0.2 V Lockout + 9.2 V Si9114A Vishay Siliconix D Soft-Start D 1.8-MHz Error Amp R C OSC OSC 8 9 OSC Out B 2 OSC Enable Q 12 DRIVER OUTPUT 11 − Substrate SHUTDOWN S ...

Page 2

... Si9114A Vishay Siliconix ABSOLUTE MAXIMUM RATINGS Voltages Referenced to − (Note: V < 0 Logic Input (SHUTDOWN, SYNC Linear Inputs (FEEDBACK, SENSE, SOFT-START Pre-Regulator Input Current (continuous Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

... Soft-Start Voltage to Disable Driver Output SS(off − OUT OUT SOURCE OUT SINK OUT CC Si9114A Vishay Siliconix Limits D Suffix −40 to 85_C a b Min Typ Max UVLO 8.8 9.1 9.4 0.1 0.25 0.7 0.18 0.28 0.4 = 100 kHz 1.5 2.5 = 500 kHz 2.2 3 ...

Page 4

... Si9114A Vishay Siliconix TYPICAL CHARACTERISTICS Oscillator Frequency 1000 47 pF 100 pF 150 pF 200 pF 100 Note: These curves were measured in a board with 3 external parasitic capacitance 100 r − Oscillator Resistance (kW) OSC Supply Current vs. Output Frequency OSC 2500 200 400 600 f − Output Frequency (kHz) OUT www ...

Page 5

... Package Reliability represent a composite of all qualified locations. http://www.vishay.com/ppg?70025. Document Number: 70025 S-42044—Rev. E, 15-Nov- SHUTDOWN r 90% 0 Part Number V CC CURRENT SENSE Si9114ADY DRIVER OUTPUT Si9114ADY-T1 Si9114ADY-T1—E3 −V IN Si9114ADJ SYNC Si9114ADJ—E3 C OSC R OSC Si9420DY V CC SENSE OUT −V IN SYNC ...

Page 6

... 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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