NCV8855 查看數據表（PDF） - ON Semiconductor

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NCV8855

Quad-Output Automotive System Power Supply IC with Integrated High-Side 2A Switch

ON Semiconductor 

NCV8855

TYPICAL APPLICATION SCHEMATIC SHOWING DETAILED BLOCK DIAGRAM

VBATT

VOUT1

VOUT1

VOUT3

Q3

VBATT

DRV_VPP 22

SYS _EN 5

VIN

Bandgap

V1

DRV_VPP

ILIMIT

VR

BST1 25

Q1 GH1 24

SN1 23

Q2 GL1 21

Q S CLK1

QR

VIN

5V _IC

35 5V_IC

I LIMIT

V1

VR

VIN LDO

CLK2 S Q

36 DRAIL

11 BST2

10 VIN_SW

R

ILIMIT

9 SN2

D1

SS2

OCSET 27

SS1

ILIMIT

RAMP2

V REF

EA

SW_FB1 29

COMP1 30

V REF

EA

DRV_VPP

5V_ IC

RAMP1

70%

VREF

SCP

SCP

CLK 1

RAMP1

CLK2

RAMP2

OSC

180°

out−of−phase

HOT_FLG

8

ISNS1+ 40

ISNS1− 39

LR_G1 1

LR_ FB1

38

UVLO

TWARN1

Main Logic / Fault

Control

TWARN2

ILIMIT

TSD1

TSD2

VREF

EA

Int. rails

and

references

5V _IC

ILIMIT

V REF

EA

VIN 26

70% VREF

VIN

SCP

SCP

Control

70% VREF

CLK1

3 SW_FB2

2 COMP2

4 SYNC

7 HS_EN

6 LDO_EN

ISNS 2+

31

32 ISNS2−

LR _G2

33

Q4

34 LR_FB2

HS_OUT

HS_S 28

Current

Limit

Vneg

clamp

Vhigh

clamp

Charge

Pump

VBATT

VOUT2

VBATT

VOUT4

37

20

AGND PGND

Figure 1. Application Schematic / Block Diagram

Components

D1

Q1, Q2

Q3, Q4

Part Number

MBRS4201T3

NTD24N06

NTD20P06LT4G

Value

200 V, 4 A, Schottky, 0.61 V Vf, SMC

60 V, N type MOSFET, 32 mW , DPAK

−60V, P type MOSFET, 130 mW, DPAK

Manufacturer

ON Semiconductor

ON Semiconductor

ON Semiconductor

http://onsemi.com

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