Part Number Hot Search : 
C3372 K1536CT AD8804 DSPIC3 FST3135 4001B 448640 TA0706A
Product Description
Full Text Search
 

To Download SI9114A Datasheet File

  If you can't view the Datasheet, Please click here to try to view without PDF Reader .  
 
 


  Datasheet File OCR Text:
 SI9114A
Vishay Siliconix
High-Frequency Switchmode Controller
FEATURES
* 15- to 200-V Input Range * Current-Mode Control * Internal Start-Up Circuit * Latched SHUTDOWN * Soft-Start * 1.8-MHz Error Amp
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. 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 14-pin plastic DIP and SOIC packages, and is specified over the industrial, D suffix (-40C to 85C) temperature range.
FUNCTIONAL BLOCK DIAGRAM
FaxBack 408-970-5600, request 70025 www.siliconix.com
S-60752--Rev. C, 05-Apr-99 1
SI9114A
Vishay Siliconix
ABSOLUTE MAXIMUM RATINGS
Voltages Referenced to -VIN VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V +VIN (Note: VCC < +VIN + 0.3 V) . . . . . . . . . . . . . . . . . . . . . . . . . 200 V Logic Input (SHUTDOWN, SYNC) . . . . . . . . . . . -0.3 V to VCC + 0.3 V Linear Inputs (FEEDBACK, SENSE, SOFT-START) . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to VCC + 0.3 V HV Pre-Regulator Input Current (continuous). . . . . . . . . . . . . . . 5 mA Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to 150C Operating Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to 85C Junction Temperature (TJ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150C Power Dissipation (Package)a 14-Pin Plastic Dip (J Suffix)b . . . . . . . . . . . . . . . . . . . . . . . . . 750 mW 14-Pin SOIC (Y Suffix)c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 900 mW Thermal Impedance (JA) 14-Pin Plastic Dip. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .167C/W 14-Pin SOIC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140C/W Notes a. Device mounted with all leads soldered or welded to PC board. b. Derate 6 mW/C above 25C. c. Derate 7.2 mW/C above 25C.
RECOMMENDED OPERATING RANGE
Voltages Referenced to -VIN VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9.5 V to 16.5 V +VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 V to 200 V fOSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 kHz to 2 MHz ROSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 k to 1 M COSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 pF to 200 pF Linear Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to VCC - 4 V Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to VCC
SPECIFICATIONS
Test Conditions Parameter Reference
OSC Disabled, TA = 25C Output Voltage Short Circuit Current Load Regulation VR ISREF VR/IR OSC Disabled Over Voltage and Temperature Rangesc VREF = -VIN IREF = 0 to -1 mA 3.94 3.88 4.0 4.0 -30 10 4.06 4.12 -5 40 V mA mV
Limits
D Suffix -40 to 85C
Symbol
Unless Otherwise Specified Oscillator Disabled -VIN = 0 V, VCC = 10 V
Mina
Typb
Maxa
Unit
Oscillator
Initial Accuracy Voltage Stabilityc Temperature Coefficientc Sync Output Current (Master Mode) Sync Output Current (Slave Mode) fOSCd f/f OSC TC ISYNC(M) ISYNC(S) ROSC = 374 k, COSC = 200 pF ROSC = 70 k, COSC = 200 pF ROSC = 70 k, COSC = 200 pF f/f = [f(16.5 V) - f(9.5 V)] / f(9.5 V) -40 TA 85C, fOSC = 100 kHz VROSC 5 V VROSC = VCC 1.0 90 450 100 500 4 200 3.0 1 500 110 550 7 500 kHz % ppm/C mA nA
Error Amplifier (COSC = -VIN OSC Disabled)
Input BIAS Current Input OFFSET Voltage Open Loop Voltage Gainc Unity Gain Bandwidthc Output Current Power Supply Rejection IFB VOS2 AVOL BW IOUT PSRR Source (VFB = 3.5 V, NI = VREF) Sink (VFB = 4.5 V, NI = VREF) 9.5 V VCC 16.5 V 1.0 50 65 1.8 VFB = 5 V, NI = VREF <1.0 5 80 2.7 -2.7 2.4 80 -1.0 200 25 nA mV dB MHz mA dB
S-60752--Rev. C, 05-Apr-99 2
FaxBack 408-970-5600, request 70025 www.siliconix.com
SI9114A
Vishay Siliconix
SPECIFICATIONS
Test Conditions Parameter Pre-Regulator/Start-Up
Input Leakage Current Pre-Regulator Start-Up Current VCC Pre-Regulator Voltage VPR -VUVLO (Turn-On) Undervoltage Lockout Hysteresis +IIN ISTART VPR VDELTA VHYST +VIN = 200 V, VCC 10 V +VIN = 48 V, tPW 300 s, VCC = VUVLO +VIN = 48 V 8 8.8 0.1 0.18 <1 20 9.1 0.25 0.28 9.4 0.7 0.4 V 10 A mA
Limits
D Suffix -40 to 85C
Symbol
Unless Otherwise Specified Oscillator Disabled -VIN = 0 V, VCC = 10 V
Mina
Typb
Maxa
Unit
Supply
Supply Current ICC CLOAD 50 pF fOSC = 100 kHz fOSC = 500 kHz 1.5 2.2 2.5 3.0 mA
Protection
Current Limit Threshold Voltage Current Limit Delay to Outputc VSENSE td VSD tSD ISD ISS V SS(off) Soft-Start Voltage to Disable Driver Output See Figure 2. VSD = 0 V 12 12 VFB = 0 V, NI = VREF VSENSE = 1.5 V, See Figure 1. 1.15 1.23 77 2.8 0.20 23 23 1.6 1.30 100 0.5 1.0 30 30 0.5 V ns V s A V
SHUTDOWN Logic Threshold SHUTDOWN Delay to Latched Outputc SHUTDOWN Pull-Up Current Soft-Start Current Output Inhibit Voltage
MOSFET Driver
Output High Voltage Output Low Voltage Peak Output Currentc Notes a. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum. b. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing. c. Guaranteed by design, not subject to production test. d. CSTRAY 5 pF on COSC. VOH VOL ISOURCE ISINK IOUT = -10 mA IOUT = 10 mA VOUT = 0 V VOUT = VCC 500 9.85 9.9 0.05 -400 1000 0.15 -200 V
mA
FaxBack 408-970-5600, request 70025 www.siliconix.com
S-60752--Rev. C, 05-Apr-99 3
SI9114A
Vishay Siliconix
TYPICAL CHARACTERISTICS (25C UNLESS OTHERWISE NOTED)
S-60752--Rev. C, 05-Apr-99 4
FaxBack 408-970-5600, request 70025 www.siliconix.com


▲Up To Search▲   

 
Price & Availability of SI9114A

All Rights Reserved © IC-ON-LINE 2003 - 2022  

[Add Bookmark] [Contact Us] [Link exchange] [Privacy policy]
Mirror Sites :  [www.datasheet.hk]   [www.maxim4u.com]  [www.ic-on-line.cn] [www.ic-on-line.com] [www.ic-on-line.net] [www.alldatasheet.com.cn] [www.gdcy.com]  [www.gdcy.net]


 . . . . .
  We use cookies to deliver the best possible web experience and assist with our advertising efforts. By continuing to use this site, you consent to the use of cookies. For more information on cookies, please take a look at our Privacy Policy. X