Texas Instruments TPS2596, Руководство пользователя, Страница: 3 / 20

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Description
3 SLVUBN7A – April 2019 – Revised August 2019
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TPS2596EVM: Evaluation Module for TPS2596xx
2 Description
The TPS2596EVM enables full evaluation of the TPS2596xx devices. The EVM supports two versions
(Auto-Retry and Latch-Off) of the devices on two Channels (CH1 and CH2, respectively). Input power is
applied at J1 (CH1) and J9 (CH2) while J2 (CH1) and J10 (CH2) provide the output connection to the
load. Refer to the schematic in
Figure 1 , and EVM test setup in Figure 2 . The TPS2596EVM supports
evaluation of single layer and two layer PCB designs on CH1 and CH2 respectively. Refer to the
TPS2596EVM layout in
Figure 8 and Figure 9 .
D2/C6 (CH1), D6/C14 (CH2) provide input protection for the TPS259621 and TPS259630 (U1 and U2,
respectively) while D4/C1-C3 (CH1), D7/C10-C12 (CH2) provide output protection and inrush current
demand from the load. S1 and S2 allow U1 and U2, respectively to be RESET or disabled. A fault (FLTb)
indicator is provided by D3, D5 for CH1 and CH2, respectively. The EN/UVLO pin is recommended to
operate below 6 V. To ensure that the EN/UVLO pin voltage is always less than 6 V, J5 and J7 need to be
installed for CH1 and CH2 respectively for input voltages greater than 10 V.
Table 1. TPS2596EVM Options and Jumper Settings
Channel Part Number Jumper Label Jumper Position Setting
CH1 TPS259621
J5 EN/UVLO
J5 Installed (for
VIN1 > 10 V)
Device enables for Vin > 3.85 V
J5 not Installed Device enables for Vin > 2.53 V
J3 OVCSEL
1-2 V
CLAMP
set to 13.58 V
3-4 V
CLAMP
set to 5.45 V
5-6 V
CLAMP
set to 3.59 V
J6 DVDT
1-2 Output slew rate set to 4.2 mV/us
3-4 Output slew rate set to 1.91 mV/us
5-6 Output slew rate set to 0.9 mV/us
J4 ILIM
1-2 I
LIM
set to 2 A
3-4 I
LIM
set to 1 A
5-6 I
LIM
set to 0.13 A
CH2 TPS259630
J7 EN/UVLO
J7 Installed (for
VIN2 > 10 V)
Device enables for Vin > 3.85 V
J7 not Installed Device enables for Vin > 2.53 V
J12 OVLO
1-2 V
OVLO
set to 13.7 V
3-4 V
OVLO
set to 5.7 V
5-6 V
OVLO
set to 3.8 V
J8 DVDT
1-2 Output slew rate set to 4.2 mV/µs
3-4 Output slew rate set to 1.91 mV/µs
5-6 Output slew rate set to 0.9 mV/µs
J11 ILIM
1-2 I
LIM
set to 2 A
3-4 I
LIM
set to 1 A
5-6 I
LIM
set to 0.13 A