ILD2111 Datasheet, PDF (10/66 Pages) Infineon Technologies AG – Digital DC/DC Buck Controller IC

ILD2111
Functional Description
Operating statuses are presented in Table 3-1 below.
Table 3-1. Device Operating Statuses
Status
Value Description
OPER_STATUS
ERR_STATUS
ERR_MODE
OPER_OFF
OPER_STARTUP
OPER_RUN
OPER_ERR
OPER_STOP
ERR_NONE
ERR_INPUV
ERR_INPOV
ERR_OUTUV
ERR_OUTOV
ERR_PWR
ERR_OPEN
ERR_OCP
ERR_OTI
ERR_OTE
ERR_PARAM_EMPTY
ERR_PARAM_DATA
ERR_MODE_LATCH
0000_H
0001_H
0002_H
0004_H
0008_H
0000_H
0001_H
0002_H
0004_H
0008_H
0010_H
0020_H
0040_H
0080_H
0100_H
0400_H
0800_H
Off - initial buck state
Startup - Vin & temperature checking
Run
Stopped by error
Stopped by UART command
No errors
Input undervoltage
Input overvoltage
Output undervoltage
Output overvoltage
Output overpower
Output open
OCP2 level detection
Overtemperature internal sensor
Overtemperature external sensor
Default parameter block empty
Default parameter block checksum error
Error handling latch
ERR_MODE_RESTART
Error handling auto restart
ERR_MODE_OFF
Error handling is off
ERR_MODE_NOP
BUCK_STATUS ¹⁾ BUCK_OFF
Error handling does not affect auto restart counter
Buck is off
BUCK_STARTUP
Buck is in start-up phase (initialized, waiting for
start-up condition, i.e. voltage and temperature)
BUCK_SOFTSTART
Buck is in soft-start phase (implements increasing
current slope until reaching reference current)
BUCK_SHUTDOWN
Buck is in shutdown phase (implements current
decreasing slope)
BUCK_EXE_OFF
Buck is executing off, buck operation stopped
BUCK_ERRC
BUCK_ON ²⁾
Buck in error state (generate small error current)
Buck is on (normal operation, default state of
operation)
During normal operation, in addition to the
aforementioned operations, the following actions
will be executed:
− Open-output processing
− Output current PWM dimming processing
− V_CC / internal temperature measurement and
processing
− External temperature measurement and
processing
− OCP1 - peak current processing
− OCP2 - peak current processing
− EPWM measurement and processing
− PI regulator processing
− Input over- and undervoltage processing
− Output over- and undervoltage processing
− Output overpower processing
1) _{See buck state machine in Figure 5.}
2) _{The number of averaged buck cycles for steady-state operation, where calculations and protections are}
handled, is defined by the constant Buck_steady_delay (see Table 3-14).
Datasheet
10
Revision 1.0, 2015-04-08