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STPM098C Datasheet(PDF) 92 Page - STMicroelectronics

Part # STPM098C
Description  Automotive dual digital 8-phase controller with PMBus™
PDF  110 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STPM098C Datasheet(HTML) 92 Page - STMicroelectronics

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Figure 77. ADE activation timing diagram
VOUTn
VID
ISEN1
0V
ZC_OFFSET<0mV
IPH1
0A
ZC_OFFSET<0A
SW1
PWM1
ZC OFFSET NEGATIVE
t
ZC OFFSET POSITIVE
t
VOUTn
VID
ISEN1
ZC_OFFSET>0mV
0V
IPH1
ZC_OFFSET>0A
0A
SW1
PWM1
Figure 78. ADE timing diagram with masking delay
VOUTn
VID
ISEN1
ZC_TH>0mA
0V
IPH1
ZC_TH>0A
0A
SW1
PWM1
ZC NEGATIVE OFFSET and MASK DELAY
t
ZC_mask_delay
In order to prevent pulse skipping frequency reduction to enter the audible band, switching frequency clamp to 30
kHz can be applied by means of a dedicated PMBus™ command as follows:
Table 73. ADE frequency clamp enable bit
ULTRASONIC_ENA
Description
0
ADE frequency clamp disabled (default)
1
ADE frequency clamp enabled
STPM098C
Functional description
DS14440 - Rev 1
page 92/110



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