LTM4650-2

32

Rev. 0

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Figure 32. Circuit with AVP, Typical 4.5VIN to 15VIN, 1VOUT (with AVP) and 1.5VOUT at 25A with 12.5A Load Step

Transient Response and 1VOUT (with AVP), 4.5VIN (78k RFB1) to 15VIN (84k RFB1)

Figure 33. Load Transient Waveform of Figure 32 Circuit with AVP, 12VIN, 1VOUT, 500kHz, 12.5A (50% of Full

Load, Slew Rate 12.5A/μs), COUT1 = 100μF ×3 Ceramic, COUT2 = 470μF ×2 POSCAP

TYPICAL APPLICATION

PGOOD2

R3

10k

INTVCC

46502 F32

LTM4650-2

VIN

TEMP

RUN1

RUN2

TRACK1

TRACK2

fSET

RFB2

40.2k

R2

10k

PHASMD

VOUT1

VOUTS1

SW1

VFB1

VFB2

COMP1

COMP2

VOUTS2

VOUT2

SW2

PGOOD2

MODE_PLLIN CLKOUT INTVCC EXTVCC PGOOD1

PGOOD1

INTVCC

SGND

GND

TRACK1

TRACK2

DIFFN

DIFFP DIFFOUT

RFB1

82.6k

VFB1

VOUT2

1.5V, 25A

COUT3

100µF

6.3V

×5

COUT4

470µF

6.3V

×2

R4

121k

R7

100k

C5

0.1µF

C9

0.1µF

C1

22µF

25V

×4

C10

4.7µF

VOUT1

1V, 25A

R19

560k

VFB1

+

CIN

330µF

25V

VIN

4.5V TO

15V

INTVCC

+

COUT1

100µF

6.3V

×3

+

R13

21k

C12

47pF

C13

3300pF

R18

5M

INTVCC

COUT2

470µF

6.3V

×2

100µs/DIV

VOUT (AC)

30mV/DIV

LOAD STEP

10A/DIV

46502 F33