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2

1.

JP3 —shunted = 

CH1 enabled

JP4 — shunted = 

CH2 enabled

JP2 —

shunted toward FCCM 

(CH1 Fixed PWM Continuous Mode 

Operation)

FIGURE 1. INITIAL SHUNT PLACEMENT FOR ISL6227EVAL1 (see Quick Setup)

JP1 — shunted

An AmpMeter may be 

connected across 

these pins to measure 

IC and GATE Drive 

Current 

JP5 —shunted toward VINPRG when 

Vin >5V, for feed-forward and program 

90 degree out of phase PWM for CH1 & 

CH2

JP2 —

shunted away from FCCM

(CH1 Automatic Mode)

C21, soft start cap of Ch2

CR1

GREEN = VOUT1 within PGOOD 

range

RED = VOUT1 outside PGOOD 

range

ISL6227

Regulator

Application Note 1067

Содержание ISL6227EVAL1

Страница 1: ...from ISEN pin to the phase node of the converter Any overcurrent on the second channel will be reflected to the first channel There is no OCP for the second channel In order to alleviate the interacti...

Страница 2: ...p JP1 shunted An AmpMeter may be connected across these pins to measure IC and GATE Drive Current JP5 shunted toward VINPRG when Vin 5V for feed forward and program 90 degree out of phase PWM for CH1...

Страница 3: ...J3 FIGURE 2 WIRING CONNECTIONS FOR ISL6227EVAL1 see Quick Setup Connect the positive terminal of the electronic load and the positive terminal of the DVM to the VTT terminal J6 Connect the negative t...

Страница 4: ...VM to the VCC terminal J4 Connect the negative terminal of the DVM to the GND terminal J1 Do not apply power yet 1c Connect VIN power supply Set the adjustable 24VDC output voltage to zero volts Conne...

Страница 5: ...indictor from RED to GREEN And the PGOOD voltage on J11 should be 5V equal to the VCC voltage 5d Read the DVM connected to the VDDQ terminal J5 It should show a value between 2 450V 2 550V 5e Read the...

Страница 6: ...20 10 0K C12 220u 4V R13 NI U2 FDS6912A 1 2 3 4 5 6 7 8 C2 10u 25V X5R C4 68u 16V R16 680 J11 C16 4 7u 10V JP3 TP1 VTT R3 0 R8 17 8K R18 680 J4 TP4 PHASE 1 R14 10 0K C5 4 7u 10V J1 J2 J7 J14 JP2 1 2 3...

Страница 7: ...x2 RETENTIVE 2 54mm ST Berg FCI 69190 202 5 JP1 JP5 CONN JUMPER 2PIN SHUNT SPC02SYAN 2 D1 D2 DIODE SCHOTTKYBARR SMD SOT323 3P 30V 2A ON Semiconductor BAT54WT1 T 1 CR1 LED SMD 4P OTHER POLARIZEDRED GRN...

Страница 8: ...8 Application Note 1067...

Страница 9: ...9 Application Note 1067...

Страница 10: ...10 Application Note 1067...

Страница 11: ...ware and or specifications at any time without notice Accordingly the reader is cautioned to verify that the Application Note or Technical Brief is current before proceeding For information regarding...

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