LTM2893/LTM2893-1

27

28931fb

For more information www.linear.com/LTM2893

TYPICAL APPLICATIONS

Figure 16. Startup Sequence with a Voltage Supervisor Enabling Isolated Side Including Isolated Power Solution

LTM2893

FAULT

ON

CSC

CNV

BUSY

SS

SCK

MISOA

MISOB

CNV2

BUSY2

SS2

SCK2

MISOA2

MISOB2

ON2

5V

3.3V

4.7k

REF

2.2µF

2.2µF

2.2µF

LTC2314-14

CONFIGURATION REGISTERS WRITE 0x20h AND 0x82h

SETS SCK2 TO 50MHz AND WORDLENGTH TO 16-BIT.

MASTER

FPGA

OR

MICROPROCESSOR

(HOST)

28931 F16

CS

SCK

SDO

10k

VM

RST

TOL

VCC

RT

SEL1

SEL2

WDI

WT

LTC2917

GND

LT3439

GND

PGND

SHDN

CT

COL

COL

16.9k

150pF

16.9k

0.1µF

4.7µF

5V

WE760390014

1.3:1

ISOLATED POWER PATH WITH THE LT3439

MBR0520L

MBR0520L

33µH

15µF

15µF

10nF

SHDN

IN

OUT

SENSE

BYP

LT1762-5

10µF

ON

BUSY

ON2

5Vi

FAULT

–10%

FAULT INDICATING

POWER LOSS

AND RECOVERY

SYSTEM READY

ISOLATED POWER LOSS

100k