Datasheet

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6 Configurations
All Jumper selections should be made prior to applying power to the EVM. User can configure this EVM
per following configurations.
6.1 Mode and Soft-Start Time Selection
The operation mode and soft-start time can be set by J4.
6.1.1 Default setting: Skip Mode, 6-ms SS
Table 2. MODE Selection
MODE RESISTANCES OPERATION MODE SOFT-START TIME
10.0 kΩ FCCM 6 ms
20.0 kΩ FCCM 3 ms
39.0 kΩ FCCM 1 ms
82.0 kΩ Skip 6 ms
160 kΩ Skip 3 ms
Open Skip 1 ms
6.2 Over-Current Protection (OCP) Selection
The OCP threshold can be set by J6.
6.2.1 Default setting: 9-A OCP
Table 3. OCP Selection
OCP SETTING CAPACITANCE OVERCURRENT LIMIT
10 nF 9 A
2.2 nF 4.5 A
Open 6 A
6.3 Enable Selection
The converter can be enabled and disabled by J1.
6.3.1 Default setting: short to disable the converter
6.4 Switching Frequency Selection or External Clock Input for Synchronization
The switching frequency can be set by J3. If the external clock is used for synchronization, the external
clock should be connected to TP5 (SYNC) and TP7 (GND).
6.4.1 Default setting: 600 kHz
Table 4. Switching Frequency Selection
SWITCHING FREQUENCY SETTING RESISTANCES SWITCHING FREQUENCY
80.6 kΩ 600 kHz
45.3 kΩ 1.00 MHz
7
SLUU819–December 2011 6-A Step-Down Regulator with Integrated Switcher
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