Texas Instruments TPS543820EVM, User Manual, Page: 5 / 38

Table 1-3. TPS543820EVM High Efficiency (U2) Performance Characteristics Summary
SPECIFICATION TEST CONDITIONS MIN TYP MAX UNIT
V
IN
voltage range 4 12 18 V
Input current
V
IN
= 12 V, I
O
= 0 A 11 mA
V
IN
= 5 V, I
O
= 8 A 1.90 A
V
IN
start voltage Set by EN pin resistor divider 4.53 V
V
IN
stop voltage Set by EN pin resistor divider 3.98 V
Output voltage setpoint J14 short pins 1 and 2 1.003 V
Output current range V
IN
= 4 V to 18 V 0 8 A
Line and load regulation V
IN
= 4 V to 18 V, I
O
= 0 A to 8 A ±0.1%
Load transient response
I
O
= 1.5 A to 4.5 A
Voltage change –28 mV
Recovery time to
within ±0.5%
60 µs
I
O
= 4.5 A to 1.5 A
Voltage change 25 mV
Recovery time to
within ±0.5%
60 µs
Loop bandwidth
R
O
= 0.2 Ω, J18 short pins 3 and 4
140 kHz
Phase margin 56 degrees
Input ripple voltage I
O
= 6 A 90 mVPP
Output ripple voltage I
O
= 6 A 6 mVPP
Output rise time Set by MODE pin resistor, All default J18 options 1 ms
Current limit
Set by MODE pin resistor, J18 short pins 1 and 2,
3 and 4, or 5 and 6
High
Switching frequency (f
SW
) Set by FSEL pin resistor, J17 short pins 3 and 4 1000 kHz
Peak efficiency
V
IN
= 5 V, I
O
= 2 A 92.4%
V
IN
= 12 V, I
O
= 3 A 89.3%
IC case temperature V
IN
= 12 V, I
O
= 8 A, 15-minute soak 53.6 °C
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SLUUCE9A – DECEMBER 2020 – REVISED APRIL 2021
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