Power Bipolar Transistor Base Drive Optocoupler

Lud'S Powermac

Description

Power Bipolar Transistor Base Drive Optocoupler Technical Data Features • High Output Current IO2 (2.0 A Peak, 0.6 A Continuous) IO1 (1.0 A Peak, 0.5 A Continuous) • 1.5 kV/µs Minimum Common Mode Rejection (CMR) at VCM = 600 V • Wide VCC Range (5.4 to 13 Volts) • 2 µs Typical Propagation Delay • Recognized under UL 1577 for Dielectric Withstand Proof Test Voltage of 5000 Vac, 1 Minute Applications • Isolated Bipolar Transistor Base Drive • AC and DC Motor Drives • General Purpose Industrial Inverters • Uninterruptable Power Supply Description The HCPL-3000 consists of a Silicon-doped GaAs LED optically coupled to an integrated circuit with a power output stage. This optocoupler is suited for driving power bipolar transistors and power Darlington devices used in motor control inverter applica- tions. The high peak and steady state current capabilities of the output stage allow for direct interfacing to the power device without the need for an interme- diate amplifier stage. With a CMR rating of 1.5 kV/µs this optocoup- ler readily rejects transients found in inverter applications. The LED controls the state of the output stage. Transistor Q2 in the output stage is on with the LED off, allowing the base of the power device to be held low. Turning on the LED turns off transistor Q2 and switches on transistor Q1 in the output stage which provides current to drive the base of a power bipolar device.

• output


• output transistor


• over recommended


• voltage rating


• optocoupler input-output


• base drive


• power supply


• output high


• current

Sujets

• Purpose
• Output
• Power supply
• Current

Informations

• Publié par: pefav
• Nombre de lectures: 30
• Langue: English

Extrait

Pwr Bplr Trnsstr Bs Drv ptplr

Thnl Dt

Ftrs • Hgh tpt rrnt  (2.0  Pk , 0.6  2 ntns)  (1.0  Pk , 0.5  1 ntns) • 1.5 kV/ m s Mnmm mmn Md Rjtn (MR) t V = 600 V M • Wd V Rng (5.4 t 13  Vlts) • 2 m s Typl Prpgtn Dly • Rgnzd ndr L 1577 fr Dltr Wthstnd Prf Tst Vltg f 5000 V, 1 Mnt

ppltns • sltd Bplr Trnsstr Bs Drv •  nd D Mtr Drvs • Gnrl Prps ndstrl nvrtrs • nntrrptbl Pwr Spply

Dsrptn Th HPL-3000 nssts f  Sln-dpd Gs LD ptlly pld t n ntgrtd rt wth  pwr tpt stg. Ths ptplr s std fr drvng pwr bplr trnsstrs nd pwr Drlngtn dvs sd n mtr ntrl nvrtr ppl- tns. Th hgh pk nd stdy stt rrnt pblts f th tpt stg llw fr drt ntrfng t th pwr dv wtht th nd fr n ntrm- dt mplfr stg. Wth  MR

Fntnl Dgrm

ANODE 1

CATHODE 2

3

4

HCPL-3000

8 V CC

7 GND Q2 6 V O2 Q1 5 V O1

HPL-3000

rtng f 1.5 kV/ms ths ptp- lr rdly rjts trnsnts fnd n nvrtr ppltns.

Th LD ntrls th stt f th tpt stg. Trnsstr Q2 n th tpt stg s n wth th LD ff, llwng th bs f th pwr dv t b hld lw. Trnng n th LD trns ff trnsstr Q2 nd swths n trnsstr Q1 n th tpt stg whh prvds rrnt t drv th bs f  pwr bplr dv.

TRUTH TABLE LED OUTPUT ON HIGH LEVEL OFF LOW LEVEL

Q1 ON OFF

Q2 OFF ON

TH S F  0.1mF BYPSS PTR NNTD BTWN PNS 8 ND 7 S RMMNDD. LS, RRNT LMTNG RSSTRS R RMMNDD (S FGR 1, NT 2, ND NT 7).

TN: t s dvsd tht nrml stt prtns b tkn n hndlng nd ssmbly f ths mpnnt t prvnt dmg nd/r dgrdtn whh my b ndd by SD.