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参数资料
| 型号： | ZL6100EVAL2Z |
| 厂商： | Intersil |
| 文件页数： | 16/34页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD 2CH USB ZL6100 |
| 标准包装： | 1 |
| 系列： | * |
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ZL6100
LOGIC
HIGH
SYNC
SYNC
200kHz – 1.33MHz
ZL6100
A) SYNC = OUTPUT
200kHz – 1.4MHz
ZL6100
B) SYNC = INPUT
N/C
LOGIC
N/C
N/C
HIGH
SYNC
Open
SYNC
SYNC
ZL6100
OR
LOGIC
ZL6100
OR
R SYNC
ZL6100
LOW
C) SYNC = AUTO DETECT
FIGURE 13. SYNC PIN CONFIGURATIONS
TABLE 11. SWITCHING FREQUENCY SELECTION
If a value other than f SW = 8MHz/N is entered using a
SYNC PIN
LOW
OPEN
HIGH
Resistor
FREQUENCY
(Hz)
200k
400k
1M
See Table 12
PMBus command, the internal circuitry will select the valid
switching frequency value that is closest to the entered
value. For example, if 810kHz is entered, the device will
select 800kHz (N = 10).
When multiple Zilker Labs devices are used together,
connecting the SYNC pins together will force all devices to
synchronize with each other. The CFG pin of one device
must set its SYNC pin as an output and the remaining
TABLE 12. R SYNC RESISTOR VALUES
devices must have their SYNC pins set as Auto Detect.
R SYNC
(k Ω )
10
11
12.1
13.3
14.7
16.2
17.8
19.6
21.5
23.7
f SW
(kHz)
200
222
242
267
296
320
364
400
421
471
R SYNC
(k Ω )
?
26.1
28.7
31.6
34.8
38.3
46.4
51.1
56.2
68.1
f SW
(kHz)
-
533
571
615
727
800
889
1000
1143
1333
Note : The switching frequency read back using the
appropriate PMBus command will differ slightly from the
selected values in Table 12. The difference is due to
hardware quantization.
Power Train Component Selection
The ZL6100 is a synchronous buck converter that uses
external MOSFETs, inductor and capacitors to perform the
power conversion process. The proper selection of the
external components is critical for optimized performance.
To select the appropriate external components for the
desired performance goals, the power supply requirements
listed in Table 13 must be known.
The switching frequency can also be set to any value
between 200kHz and 1.33MHz using the I 2 C/SMBus
interface. The available frequencies below 1.4MHz are
defined by f SW = 8MHz/N, where the whole number N is
6 ≤ N ≤ 40. See Application Note AN2033 for details.
16
FN6876.3
August 29, 2012
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