STPM098C datasheet(99/110 Pages) STMICROELECTRONICS

99 / 110 page

Application circuit

The following schematic is a reference application circuit for the STPM098C multiphase regulator; it shows the

minimum required components for the device to operate. Power section details (DrMOS and its related

components, output inductor and capacitors), are strongly dependent on the customer’s system choice, as well as

the number of phases assigned to each loop, so the proposed part numbers and values suggested are intended

to be only indicative.

Figure 82. Reference application circuit

POWERIN_P

POWERIN_N

PWMn

CFILT/VREF1

ISENn

TSENm

VSENm

VRTNm

CVREF1

VCC

SM_ADDR

AUX_SENSE

CFILT/VREF2

SM_CLK

SM_DATA

SM_ALERT

VRRDYm

FAULT

VR_HOT

POWERIN_ALERT

VR_ENm

IOUT

TOUT

REFIN

PWM

VCC

VOUTm

LPHASEn

CVOUTm

CVCC

RADDRH

RADDRL

RAUXH

RAUXL

CVREF2

RPU_PMBUS

RPU_FAULT

to/from

MCU

n = phase number

m = loop number

RSENSE

VBATP

5VDRMOS

STPM098C

DrMOSn

VIN

VBATP is the battery line protected against battery reverse events, as well as any other possible damaging

disturbances that might occur, according to specific standards requirements. Methods for battery line protection

are in charge of the system design. From the STPM098C point of view, VBATP line must not exceed

POWERIN_P and POWERIN_N absolute maximum ratings.

5 V goes to VCC, which is the main supply line for STPM098C; in the proposed schematic it is separated from

DrMOS main supply line but they could be possibly shared, according to system design needs. STPM098C’s

AUX_SENSE input can be used to monitor DrMOS dedicated supply line for diagnostic and safety purposes.

STPM098C fault lines, VR_EN and PMBus™ lines are to be connected to an automotive grade MCU. For safety

architecture implementation, the same MCU could be used to also acquire other feedback signals coming from

DrMOS, as instance, for temperature check or output voltage monitoring.

5.1

Bill of material

Table 79. Reference bill of material

Name

Min

Typ

Max

Unit

Minimum requirements

Notes

CVCC

μF

6.3 V

To be placed close to the VCC pin

CVREF1

4.7

μF

6.3 V

To be placed close to the VREF1 pin

CVFRE2

4.7

μF

6.3 V

To be placed close to the VFRE2 pin

CVOUTm

According to the customer's configuration

DrMOSn

STSHB50

STPM098C

Applicationcircuit

DS14440 - Rev 1

page 99/110

STPM098C bảng dữ liệu(PDF) 99 Page - STMicroelectronics

STPM098C bảng dữ liệu(HTML) 99 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

bảng dữ liệu tải về

Link URL