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NCV97310MW50GEVB

http://onsemi.com

13

SCHEMATIC

(5.0 V)

(3.3

 V

)

(1.2 V)

Place CIN0, L0, CIN1, CIN2 on VBAT side.

Place CIN3 close to VINL (pin 29)

Place CIN4 close to VBAT (pin 1)

Place close

to VIN2

50V

Place close

to VIN2

Place GND near

ERRB for logic

reference.

Place CIN5 on

bottom of PCB

BST3

VOUT3

VOUT2

ROSC

SW1

VBAT_IC

STBYB

RMIN

EN2

ERRB

RST2B

RST3B

EN

FB3

EN3

FB2

VIN2

BST2

COMP1

VOUT1

VBAT

SW3

VIN2

VIN2

RST1B

SW2

VOUT1

VOUT1

VOUT1

VOUT1

VOUT1

VOUT1

CCOMP1

330 pF

CO14

1 uF

R5

10K

R6

10K

CDRV1 0.1 uF

VIN2

L1

4.7 uH

GND0

1

J1

1

2

VBAT_1

CDRV2

0.47 uF

COUT21

10 uF

COMP1

TP1

C1

100 pF

TP2

CIN2

4.7 uF

U1

NCV97310MW50R2G

VBAT

1

EN

2

STBY

3

RDEPTH

4

RMOD

5

RST1

6

COMP1

7

ROSC

8

ERR

9

EN2

10

RST2

11

GND1

12

RST3

13

FB3

14

EN3

15

BST3

16

GND3

17

SW3L

18

SW3H

19

VDRV2

20

VIN3

21

VIN2

22

SW2

23

GND2

24

BST2

25

FB2

27

VOUT

28

VINL

29

BST1

30

VDRV1

31

SW1

32

RMIN

26

EPAD

33

CSNB2

100 pF

CIN0

4.7 uF

RMIN1

100

RMIN

CIN5

100 uF

VBAT

1

VOUT3

1

R3

10K

COUT32

10 uF

VOUT2

RSNB2

10.0

CCOMP2

22 pF

J2

1

2

RMIN3

100

STBYB

RFB2L

5.76K

EN

GND1

1

DRV1

COUT13

10 uF

GND

GND3

1

CSNB3

100 pF

VOUT1

D1

NRVB440MFS

EN2

COUT12

10 uF

VOUT1

1

SW1

CO15

4.7 uF

R7

0.0

ROSC

DNP

RSNB3

10.0

RFB3L

DNP

R1

0.0

FB2

CIN1

4.7 uF

TP3

COUT31

10 uF

J4

1

2

L2

2.2 uH

ERRB

RCOMP1

12.4K

EN3

CBST2

0.1 uF

C2

100 pF

VOUT3

VOUT2

1

SW2

RMIN2

100

RST2B

COUT11

10 uF

CBST3

0.1 uF

R2

0.0

C3

0.1 uF

J3

1

2

CIN4

2.2 uF

RFB3U

10K

SW3

RST3B

RDEPTH

DNP

CBST1

0.1 uF

COUT22

10 uF

GND2

1

FB3

R4

10K

L3

1.0 uH

L0

1.0 uH

RST1B

CIN3

1 uF

RFB2U

10K

RMOD

DNP

VIND

Содержание NCV97310

Страница 1: ...Iq operating mode the low voltage switchers are disabled and the standby rail is supplied by a low Iq LDO up to 150 mA with a typical Iq of 30 mA The LDO regulator is in parallel to the high voltage s...

Страница 2: ...REGULATOR 2 1V2 3V3 STEP DOWN REGULATOR 3 1V2 3V3 STEP DOWN VINL VOUT VBAT SW1 EN STBYB VIN2 SW2 SW3H FB2 FB3 EN2 EN3 VDRV1 BST1 ROSC OT WARNING VIN_UVLO ERRB GND2 RSTB1 RSTB2 TEMP VIN_OV RSTB1 RSTB2...

Страница 3: ...rn VOUT1 Positive 5 0 V dc output voltage LDO switcher 1 VOUT2 Positive DC output voltage switcher 2 VOUT3 Positive DC output voltage switcher 3 EN Master enable input Includes jumper J3 to connect to...

Страница 4: ...2 V Line Regulation VOUT1 IOUT1 1 0 A 0 03 Line Regulation VOUT2 IOUT2 1 0 A 0 01 Line Regulation VOUT3 IOUT3 1 0 A 0 001 Load Regulation VOUT1 VBAT 13 2 V 0 3 Load Regulation VOUT2 VBAT 13 2 V 0 02...

Страница 5: ...DEPTH 4 RMOD 5 RST1 6 COMP1 7 ROSC 8 ERR 9 EN2 10 RST2 11 GND1 12 RST3 13 FB3 14 EN3 15 BST3 16 GND3 17 SW3L 18 SW3H 19 VDRV2 20 VIN3 21 VIN2 22 SW2 23 GND2 24 BST2 25 FB2 27 VOUT 28 VINL 29 BST1 30 V...

Страница 6: ...of EN3 state and read 0 V 4 Connect a dc enable voltage within the 2 0 V to 36 V range between STBYB and GND This will exit low Iq mode and power up switcher 1 You may use jumper J2 to connect STBYB...

Страница 7: ...ices switching translates to higher efficiency Unfortunately the switching leads to a much noisier EMI profile We can greatly decrease some of the radiated emissions with some spread spectrum techniqu...

Страница 8: ...using a resistor from the RDEPTH pin to GND Please see the curves below for typical values Spread spectrum is automatically turned off when there is a short to GND or an open circuit on either the RM...

Страница 9: ...40 50 60 70 80 90 100 0 0 5 1 1 5 2 2 5 Efficiency Output Current A NCV97310 SW2 Efficiency 3 3 V VIN 5 0 V VIN 8 0 V Figure 8 Efficiency for SW3 with a 1 2 V Output 0 10 20 30 40 50 60 70 80 90 100 0...

Страница 10: ...0 5 10 15 20 25 30 Line Regulation Input Voltage V NCV97310 SW1 3 3 V Line Regulation IOUT 100 mA IOUT 500 mA IOUT 1 0 A IOUT 2 0 A IOUT 3 0 A Figure 10 Line Regulation for SW2 with a 3 3 V Output 0...

Страница 11: ...lation Input Voltage V NCV97310 SW3 1 2 V Line Regulation IOUT 100 mA IOUT 500 mA IOUT 1 0 A IOUT 2 0 A Load Regulation Figure 12 Load Regulation for SW1 with a 5 0 V Output 0 40 0 30 0 20 0 10 0 00 0...

Страница 12: ...0 0 05 0 10 0 0 5 1 1 5 2 2 5 Load Regulation Output Current A NCV97310 SW2 Load Regulation 3 3 V VIN 5 0 V VIN 8 0 V Figure 14 Load Regulation for SW3 with a 1 2 V Output 0 10 0 05 0 00 0 05 0 10 0 0...

Страница 13: ...ST1 6 COMP1 7 ROSC 8 ERR 9 EN2 10 RST2 11 GND1 12 RST3 13 FB3 14 EN3 15 BST3 16 GND3 17 SW3L 18 SW3H 19 VDRV2 20 VIN3 21 VIN2 22 SW2 23 GND2 24 BST2 25 FB2 27 VOUT 28 VINL 29 BST1 30 VDRV1 31 SW1 32 R...

Страница 14: ...NCV97310MW50GEVB http onsemi com 14 PCB LAYOUT Figure 15 Top View Figure 16 Bottom View...

Страница 15: ...06 2 2 mF 10 1206 Murata Electronics North America GCM31CR71H225KA55L Yes CIN5 1 CAP ALUM 100 mF 50 V 20 SMD 100 mF 20 FK_V_E Chemi Con EMZA500ADA101MHA0G Yes CO14 1 CAP CER 1 mF 16 V 10 X7R 0603 1 0...

Страница 16: ...es Representative ON Semiconductor and the are registered trademarks of Semiconductor Components Industries LLC SCILLC or its subsidiaries in the United States and or other countries SCILLC owns the r...

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