zl2006 Intersil Corporation, zl2006 Datasheet - Page 39

• Manufacturer Part Number: zl2006
• Description: Adaptive Digital Dc-dc Controller With Drivers And Current Sharing
• Manufacturer: Intersil Corporation

6.17
A system controller can monitor a wide variety of
different ZL2006 system parameters through the
I
conditions by monitoring the SALRT pin, which will
be pulled low when any number of pre-configured fault
conditions occur.
The device can also be monitored continuously for any
number of power conversion parameters including but
not limited to the following:
•
•
•
•
•
•
The PMBus Host should respond to SALRT as
follows:
If multiple devices are faulting, SALRT will still be
low after doing the above steps and will require
transmission with the Alert Response Address
repeatedly until all faults are cleared.
Please refer to Application Note AN33 for details on
how to monitor specific parameters via the I
interface.
2
C/SMBus interface. The device can monitor for fault
1. ZL device pulls SALRT Low
2. PMBus Host detects that SALRT is now low,
3. PMBus Host talks to the ZL device that has pulled
Input voltage / Output voltage
Output current
Internal junction temperature
Temperature of an external device
Switching frequency
Duty cycle
performs transmission with Alert Response
Address to find which ZL device is pulling
SALRT low.
SALRT low. The actions that the host performs
are up to the System Designer.
Monitoring via I
39
2
C/SMBus
2
C/SMBus
ZL2006
6.18 Snapshot™ Parameter Capture
The ZL2006 offers a special mechanism that enables
the user to capture parametric data during normal
operation or following a fault.
functionality is enabled by setting bit 1 of
MISC_CONFIG to 1.
The Snapshot feature enables the user to read the
parameters listed in Table 30 via a block read transfer
through the SMBus. This can be done during normal
operation, although it should be noted that reading the
22 bytes will occupy the SMBus for some time.
Table 30. Snapshot Parameters
The SNAPSHOT_CONTROL command enables the
user to store the snapshot parameters to Flash memory
in response to a pending fault as well as to read the
stored data from Flash memory after a fault has
occurred. Table 31 describes the usage of this
command. Automatic writes to Flash memory
following a fault are triggered when any fault threshold
level is exceeded, provided that the specific fault’s
response is to shut down (writing to Flash memory is
not allowed if the device is configured to re-try
following the specific fault condition). It should also be
noted that the device’s V
during the time when the device is writing the data to
Flash memory; a process that requires between 700-
1400 µs depending on whether the data is set up for a
block write. Undesirable results may be observed if the
device’s V
process.
31:22
21:20
19:18
17:16
15:14
13:12
11:10
Byte
9:8
7:6
5
4
3
2
1
0
DD
supply drops below 3.0 V during this
Mfr specific status
External temp
Internal temp
Description
Temp status
Input status
Vout status
CML status
Duty cycle
Iout status
Reserved
Iout,peak
Iout,avg
DD
Vout
fsw
Vin
voltage must be maintained
December 15, 2010
The Snapshot
Vout Linear
Format
Linear
Linear
Linear
Linear
Linear
Linear
Linear
Linear
FN6850.1
Byte
Byte
Byte
Byte
Byte
Byte