zl2006 Intersil Corporation, zl2006 Datasheet - Page 37

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

6.14 Temperature Monitoring Using the XTEMP
The ZL2006 supports measurement of an external
device temperature using either a thermal diode
integrated in a processor, FPGA or ASIC, or using a
discrete diode-connected 2N3904 NPN transistor.
Figure 22 illustrates the typical connections required.
Table 29. CFG Pin Configurations for Sequencing
Figure 22. External Temperature Monitoring
Pin
12.1 kΩ
14.7 kΩ
16.2 kΩ
17.8 kΩ
21.5 kΩ
23.7 kΩ
26.1 kΩ
31.6 kΩ
34.8 kΩ
38.3 kΩ
10 kΩ
11 kΩ
R
CFG
37
SYNC Pin Config
Auto detect
Auto detect
Auto detect
Auto detect
Output
Output
Output
Output
Input
Input
Input
Input
ZL2006
6.15
Paralleling multiple ZL2006 devices can be used to
increase the output current capability of a single power
rail. By connecting the DDC pins of each device
together and configuring the devices as a current
sharing rail, the units will share the current equally
within a few percent.
Figure 23 illustrates a typical connection for three
devices.
The ZL2006 uses a low-bandwidth digital current
sharing technique to balance the unequal device output
loading by aligning the load lines of member devices to
a reference device.
Sequencing is disabled
The ZL2006 is configured as the first device in a
nested sequencing group. Turn on order is based
on the device SMBus address.
The ZL2006 is configured as a last device in a
nested sequencing group. Turn on order is based
on the device SMBus address.
The ZL2006 is configured as the middle device in
a nested sequencing group. Turn on order is
based on the device SMBus address.
Active Current Sharing
Figure 23. Current Sharing Group
Sequencing Configuration
December 15, 2010
FN6850.1