STSPIN32G4 datasheet(16/48 Pages) STMICROELECTRONICS

tên linh kiện	STSPIN32G4

Giải thích chi tiết về linh kiện	High performance 3-phase motor controller with embedded STM32G4 MCU

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16 / 48 page

Figure 5. VCC Buck configuration

Buck

reg.

COUT

The output voltage can be set to different values as listed in Table 8 . The regulator works with a fixed switching

frequency of fSW,Buck and a maximum duty cycle of 90%.

A soft-start is implemented on system power-up or wake-up: the output target voltage is gradually increased up to

the target VCC in tSS,Buck time (refer to Figure 6). During the first half of tSS,Buck time the regulator works with a

fixed switching frequency of fSW,SS.

When the target output voltage is changed, a new soft-start ramp is generated with the new target voltage as final

value.

Table 8. VCC Buck regulator output voltage

VCC_VAL

VCC regulated value [V]

Note

default

Figure 6. VCC buck regulator soft-start

7/32 x VCC,mean

VCC,mean = 15 V

VCC,mean = 8 V

new VCC,mean value

7/32 x VCC,mean

tSS,Buck

It is possible to provide externally the VCC supply, bypassing the integrated regulator.

STSPIN32G4

Power management section

DS13630 - Rev 1

page 16/48

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