LTC9111

17

Rev. 0

For more information www.analog.com

220nF

M1

CGATE

R1

M5

M4

RGATE

D1

D2

M2

C2

C1

CSTBY

M3

R4

R3

R2

C3

L2

CBULK

D3

RBULK

STBY

SNS1

SNS2

IN

GND

GATE

EN

CLASSC*

CLASSV*

ADIN1100

LTC9111

OUT

LGATE1

LGATE2

SCCP

22nF

100V

NPO

3.3

1/4W

2.2µF

6.3V

3.3

1/4W

3.3

1/4W

150nF

100V

X7R

47nF

100V

X7R

47nF

100V

X7R

100V

X7R

220nF

100V

X7R

FROM

PSE

40

1/4W

100

10k

BSS123

BSS123

T1

ICI70CGI-222N

47 F

*CLASSC/CLASSV TO BE CONFIGURED AS STATED IN TABLE 3.

IN

GND

EN

ISOLATED/

NON-ISOLATED

DC/DC

REGULATOR

VREG

OUT+

OUT–

9111 TA03

PARTS SUITABLE FOR ALL CLASSES

INPUT BRIDGE RECTIFIER HIGH SIDE DIODES (D1, D2): NEXPERIA, PMEG10020AELRX

INPUT BRIDGE RECTIFIER LOW SIDE FETS (M4, M5): NEXPERIA, BUK9M120-100EX OR

DUAL FET: NEXPERIA, BUK9K134-100EX

SCCP PULLDOWN FETS (M2, M3): ONSEMI, BSS123LT1G

INPUT TVS (D3): NEXPERIA, PTVS58VP1UTP

PD HOT SWAP FET (M1): NEXPERIA, PSMN075-100MSEX

1M

1206

1M

1206

L1

10k

1206

10k

1206

Circuit for Classes 10 through 14

TYPICAL APPLICATION

Table 3. Recommendations for IEEE 802.3cg Classes

IEEE 802.3cg

PSE CLASS

SPoE INDUCTOR

(L1)

POWER + DATA CMC

(L2)

OUTPUT BULK

CAPACITOR (CBULK)

CLASSV

CLASSC

CLASS 10

MSD7342-683

PID75-650M

DR334A-474BE

B82793C0474N215

47µF, 50V

GND

GND

CLASS 11

FLOAT

CLASS 12

MSD1048H-683

PID100-650M

SRF0905A-471Y

RCM70CGI-471N

STBY

CLASS 13

MSD7342-683

PID75-650M

DR334A-474BE

B82793C0474N215

47µF, 100V

STBY

GND

CLASS 14

MSD1048H-683

PID100-650M

SRF0905A-471Y

RCM70CGI-471N

FLOAT