PDF IR3094PBF Data sheet ( Hoja de datos )

Número de pieza	IR3094PBF
Descripción	3 PHASE PWM CONTROLLER FOR POINT OF LOAD
Fabricantes	International Rectifier
Logotipo
Hay una vista previa y un enlace de descarga de IR3094PBF (archivo pdf) en la parte inferior de esta página. Total 29 Páginas
No Preview Available ! www.DataSheet4U.com Data Sheet No. PD 94716 IR3094PBF 3 PHASE PWM CONTROLLER FOR POINT OF LOAD DESCRIPTION The IR3094 Control IC provides a full featured, cost effective, single chip solution to offers a compact, efficient solution for high current POL converters. Control and 3 Phase Gate Drive functions are integrated into a single space-saving IC. FEATURES x 0.85V Reference Voltage x 3A GATELX Pull Down Drive Capability x Programmable 100KHz to 540KHz oscillator x Programmable Voltage Positioning (can be disabled) x Programmable Softstart x Programmable Hiccup Over-Current Protection with Delay to prevent false triggering x Simplified Powergood provides indication of proper operation and avoids false triggering x Operates up to 16V converter input with 7.5V Under-Voltage Lockout x 4.36V Under-Voltage Lockout threshold for gate driver voltage x Adjustable Voltage, 150mA Bias Regulator provides MOSFET Drive Voltage x Enable Input x OVP Flag Output detects high side fet short at powerup x Separate OVP sense line to sense the output voltage and latched OVP with protection x Inductor DCR sensing for current seDnastianSghweiellts4uUp.pcoormt up to 5.1V output applications x Available 48L MLPQ package ORDERING INFORMATION Device IR3094MTRPBF IR3094MPBF Order Quantity 3000 per Reel 100 piece strips PACKAGE INFORMATION DataShee NC NC ROSC VOSNS- OCSET VREF VDRP FB EAOUT SS/DEL SCOMP2 SCOMP3 IR3094 48LD MLPQ GATEH1 PGND1 GATEL1 VCCL1_2 5VUVL GATEL2 PGND2 GATEH2 VCCH2 VCCH3 GATEH3 PGND3 48L MLPQ (7 x 7 mm Body) JA = 27oC/W DataSheet4U.com Page 1 of 29 DataSheet4 U .com DataSheet4U.com 09/26/05 1 page www.DataSheet4U.com IR3094PBF et4U.com PARAMETER BIASOUT Regulator SETBIAS Bias Current Set Point Accuracy BIASOUT Dropout Voltage BIASOUT Current Limit Soft Start and Delay SS/DEL to FB Input Offset Voltage Charge Current Hiccup Discharge Current OC Discharge Current Charge/Discharge Current Ratio Charge Voltage Delay Comparator Threshold Discharge Comparator Threshold Over-Current Comparator Input Offset Voltage OCSET Bias Current Max OCSET Set Point Under-Voltage Lockout VCC Start Threshold VCC Stop Threshold VCC Hysteresis 5VUVL Start Threshold 5VUVL Stop Threshold 5VUVL Hysteresis PWRGD Output Output Voltage Leakage Current TEST CONDITION RROSC = 47k V(SETBIAS)-V(BIASOUT) @ 100mA I(BIASOUT)=100mA,Threshold when V(SETBIAS)-V(BIASOUT)=0.45V With FB = 0V, adjust V(SS/DEL) until EAOUT drives high Relative to Charge Voltage DataSheet4U.com V(OCSET)-V(VREF), CSINM=CSINP1=CSINP2=CSINP3, Note 1. RROSC = 47k Start – Stop Start – Stop I(PWRGD) = 4mA V(PWRGD) = 5.5V MIN TYP MAX UNIT 94 103 117.5 PA 0 0.25 0.55 V 1.2 1.8 2.5 V 150 250 500 mA 0.8 1.1 1.8 V 30 60 90 PA 3.5 6 9 PA 25 55 70 PA 9 10 13 PA/PA 3.8 4.0 4.2 V 180 245 310 mV 170 265 350 mV DataShee -125 0 125 mV 23.5 27 29.4 PA 3.9 V 7.0 7.5 8.0 6.5 7.0 7.5 400 500 700 4.05 4.36 4.60 3.92 4.17 4.40 100 200 250 V V mV V V mV 150 400 mV 0 10 PA DataSheet4U.com Page 5 of 29 DataSheet4 U .com DataSheet4U.com 09/26/05 5 Page www.DataSheet4U.com IR3094PBF PWM Operation The IR3094 is a fully integrated 3 phase interleaved PWM control IC which uses voltage mode control with trailing edge modulation. A high-gain wide-bandwidth voltage type Error Amplifier in the Control IC is used for the voltage control loop. The PWM block diagram of the IR3094 is shown in Figure 2. et4U.com C D AC R D AC VR EF U30 IROSC CLK1 CLK2 CLK2 CLK3 CLK3 OSC BLOC K OVP SET OVP LATCH S Q OVP RESET QB R VOSN S- VDAC ERROR AMPLIFIER PWM COMPARATOR - + RSFF S Q QB R RESET DOMINANT I R OSC / 2 9p 0.6V FB CCOMP RCOMP EAOU T I R OSC RDRP VDRP VDRP BUFFER RFB SC OMP2 0.575V 0% DUTY CYCLE C LK2 PWM COMPARATOR R SF F S Q - QB R + RESET DOMINANT IROSC Share Adjust Error Amp + - 0 TO IROSC3/4 9p 0.6V CSC2 RSC2 RSFF DataSheet4U.comCLK3 S PWM COMPARATOR Q EAOUT - QB R + RESET DOMINANT IROSC SC OMP3 CSC3 RSC3 Share Adjust Error Amp + - 0 TO IROSC3/4 9p 0.6V VDAC VDAC VDAC X23.5 - + X23.5 - + X23.5 - + GATEH 1 VI N GATEL1 12 RCS1 CCS1 GATEH 2 GATEL2 VI N 12 RCS2 CCS2 GATEH 3 GATEL3 VI N 12 RCS3 CCS3 C SI N M3 C SI N P3 C SI N M2 C SI N P2 C SI N M1 C SI N P1 VOUT SENSE+ VOUT+ COUT VOUT- VOUT SENSE- DataShee Figure 2 – PWM Block Diagram Refer to Figure 3. Upon receiving a clock pulse, the RSFF is set, the internal PWM ramp voltage begins to increase, the low side driver is turned off, and the high side driver is then turned on. For phase 1, an internal 9pf capacitor is charged by a current source that proportional to the switching frequency resulting in a ramp rate of 50mV per percent duty cycle. For example, if the steady-state operating switch node duty cycle is 10%, then the internal ramp amplitude is typically 500mV from the starting point (or floor) to the crossing of the EAOUT control voltage. When the PWM ramp voltage exceeds the Error Amplifier’s output voltage, the RSFF is reset. This turns off the high side driver, turns on the low side driver, and discharges the PWM ramp to 0.6V until the next clock pulse. DataSheet4U.com Page 11 of 29 DataSheet4 U .com DataSheet4U.com 09/26/05 11 Page

Páginas	Total 29 Páginas
PDF Descargar	[ Datasheet IR3094PBF.PDF ]

Hoja de datos destacado

Número de pieza	Descripción	Fabricantes
IR3094PBF	3 PHASE PWM CONTROLLER FOR POINT OF LOAD	International Rectifier

Número de pieza	Descripción	Fabricantes
SLA6805M	High Voltage 3 phase Motor Driver IC.	Sanken
SDC1742	12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.	Analog Devices

DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.

DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar