Texas Instruments TPS25944X635EVM, Руководство пользователя, Страница: 3 / 22

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Description
2 Description
The TPS25944XEVM-635 enables full evaluation of the TPS25944X devices. The EVM supports two
versions (Auto-Retry and Latched) of the devices on two Channels (CH1 and CH2, respectively). Input
power is applied at J3 (CH1) and J8 (CH2), while J2 (CH1)/J7 (CH2) provide the output connection to the
load, refer to the schematic in
Figure 1 , and test setup in Figure 2 .
D5/C1 (CH1), D9/C7 (CH2) provides input protection for TPS25944X (U1 and U2, respectively) while
D4/C2/C3/C4 (CH1), D8/C8/C9/C10 (CH2) provides output protection.
S1 allows U1 and S2 allows U2 to be RESET or disabled. A power good (PG) indicator is provided by D2
and D6 for CH1 and CH2, respectively, and circuit faults can be observed with D2 and D6. Scaled channel
current can be monitored at TP11 and T22 with a scale factor of 0.842 V/A.
Table 1. TPS25944X EVM Options and Default Setting
UVLO Current Limit Fault Response
Part Number EVM Function Vin Range OVP
LO
CH1 CH2 No Jumper HI Setting CH1 CH2
Setting
Internal
TPS25944XEVM-635 Circuit Breaker 2.7 V–18 V 10.8 V 16.5 V 3.6 A 2.1 A 5.3 A Auto-retry Latched
(2.3 V)
3 SLUUBC2A – May 2015 – Revised July 2015 TPS25944X635EVM: Evaluation Module for TPS25944X
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