Datasheet

TIME 4 µs/Div
TPS5 1225 EVM-133
5 V Output Ripple
Test Condition:
12 V , 5 V/10 A, 3.3 V/0 A
IN
CH1: 5 V Output Ripple
TIME 4 µs/Div
TPS5 1225 EVM-133
3.3 V Output Ripple
Test Condition:
12 V , 5 V/0 A, 3.3 V/10 A
IN
CH1: 3.3 V Output Ripple
TIME 400 µs/Div
TPS5 1225 EVM-133
Enable Start-up
Test Condition:
12 V , 5 V/5 A, 3.3 V/5 A
IN
CH1: EN
CH2: 5 V
OUT
CH3: 3.3 V
OUT
CH4: PGOOD
TIME 400 µs/Div
TPS5 1225 EVM-133
Enable Shutdown
Test Condition:
12 V , 5 V/5 A, 3.3 V/5 A
IN
CH1: EN
CH2: 5 V
OUT
CH3: 3.3 V
OUT
CH4: PGOOD
www.ti.com Performance Data and Typical Characteristic Curves
7.5 Enable Turn on/Turn off
Figure 8. EN1 and EN2 Turn on Figure 9. EN1 and EN2 Turn off
7.6 Output Ripple
Figure 10. 5-V Output Ripple Figure 11. 3.3-V Output Ripple
11
SLVU735–June 2012 Dual Synchronous Step-Down Fixed Output Controller with 5-V and 3.3-V
LDOs
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