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ZY8160 60A DC-DC Intelligent POL
8V to 14V Input ? 0.5V to 2.75V Output
Data Sheet
8. Programmable Features
Performance parameters of ZY8160 POL converters
can be programmed via the industry standard I 2 C
communication bus without replacing any
components or rewiring PCB traces. Each
parameter has a default value stored in the volatile
memory registers detailed in Table 1. The setup
registers 00h through 14h are programmed at the
system power-up. When the user programs new
performance parameters, the values in the registers
are overwritten. Upon removal of the input voltage,
the default values are restored.
Table 1. ZY8160 Memory Registers
ZY8160 converters can be programmed using the
Graphical User Interface or directly via the I 2 C bus by
using high and low level commands as described in
the ‘”DPM Programming Manual”.
ZY8160 parameters can be reprogrammed at any
time during the system operation and service except
for the digital filter coefficients, the switching
frequency and the duty cycle limit, that can only be
changed when the POL output is turned off.
8.1 Output Voltage
The output voltage can be programmed in the GUI
Output Configuration window shown in the Figure 17
or directly via the I 2 C bus by writing into the VOS
Register
PC1
PC2
PC3
DON
DOF
TC
INT
Content
Protection Configuration 1
Protection Configuration 2
Protection Configuration 3
Turn-On Delay
Turn-Off Delay
Tracking Configuration
Interleave Configuration and
Address
00h
01h
02h
05h
06h
03h
04h
register shown in Figure 18.
Frequency Selection
RUN
ST
VOS
CLS
DCL
B1
B2
B3
C0L
C0H
RUN Register
Status Register
Output Voltage Setpoint
Current Limit Setpoint
Duty Cycle Limit
Dig Controller Denominator z -1
Coefficient
Dig Controller Denominator z -2
Coefficient
Dig Controller Denominator z -3
Coefficient
Dig Controller Numerator z 0
Coefficient, Low Byte
Dig Controller Numerator z 0
15h
16h
07h
08h
09h
0Ah
0Bh
0Ch
0Dh
0Eh
C1L
Coefficient, High Byte
Dig Controller Numerator z -1
0Fh
Figure 17. Output Configuration Window
C1H
Coefficient, Low Byte
Dig Controller Numerator z -1
10h
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
C2L
C2H
C3L
C3H
Coefficient, High Byte
Dig Controller Numerator z -2
Coefficient, Low Byte
Dig Controller Numerator z -2
Coefficient, High Byte
Dig Controller Numerator z -3
Coefficient, High Byte
Dig Controller Numerator z -3
Coefficient, Low Byte
11h
12h
13h
14h
VOS7 VOS6 VOS5 VOS4
Bit 7
Bit 7:0 VOS[7:0] , Output voltage setting
00h: corresponds to 0.5000V
01h: corresponds to 0.5125V
…
77h: corresponds to 1.9875V
78h: corresponds to 2.0000V
79h: corresponds to 2.025V
…
VOS3
VOS2 VOS1 VOS0
Bit 0
R = Readable bit
W = Writable bit
U = Unimplemented bit,
read as ‘0’
- n = Value at POR reset
VOM
Output Voltage Monitoring
17h
IOM
TMP
Output Current Monitoring
Temperature Monitoring
18h
19h
…
96h: corresponds to 2.750V
Figure 18. Output Voltage Setpoint Register VOS
ZD-01674 Rev. 1.2, 02-Jul-10
www.power-one.com
Page 14 of 30
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