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DA9220 데이터시트(PDF) 20 Page - Dialog Semiconductor

부품명 DA9220
상세설명  High-Performance Dual-Channel DC-DC Converter
PDF  62 Pages
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DA9220
High-Performance Dual-Channel DC-DC Converter
Datasheet
Revision 2.1
17-Sep-2020
CFR0011-120-00
20 of 62
© 2020 Dialog Semiconductor
4.1.6
Thermal Protection
DA9220 is protected from internal overheating by thermal shutdown.
There are two kinds of flags concerning thermal protection, thermal warning and thermal critical. The
warning flag is asserted when TJ > TWARN and the critical flag is asserted when TJ > TCRIT. When the
critical flag is asserted, Buck1 and 2 are shut down immediately.
Table 12: Thermal Protection Control Registers
Category
Register name
Description
Status
TEMP_WARN
Asserted as long as the thermal warning threshold is reached
TEMP_CRIT
Asserted as long as the thermal shutdown threshold is reached
IRQ event
E_TEMP_WARN
TEMP_WARN caused event
E_TEMP_CRIT
TEMP_CRIT caused event
IRQ mask
M_TEMP_WARN
TEMP_WARN event IRQ mask
M_TEMP_CRIT
TEMP_CRIT event IRQ mask
M_VR_HOT
TEMP_WARN status IRQ mask
Figure 15: Thermal Protection Operation
Warning Flag
TCRIT
Junction
Temperature
TWARN
Critical Flag
IRQ
IRQ
Buck1 and 2 Shutdown
Buck Enable
I2C Bus
Write
1
to CH<x>_EN



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