Texas Instruments TPS53819A, User Manual

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• 25-A DC steady state output current
• D-CAP2
™ mode control supporting all ceramic output capacitors
• Programmable soft start through the PMBus interface
• Programmable enable function through the PMBus interface
• Fault report through the PMBus interface
• J2 for external enable function
• Supports pre-bias output voltage start-up
• High efficiency and high-power density by using a TI power block MOSFET
• Convenient test points for probing critical waveforms
• Cycle-by-cycle valley overcurrent limit protection
2 Electrical Performance Specifications
Table 2-1. TPS53819AEVM-123 Electrical Performance Specifications
(1)
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
INPUT CHARACTERISTICS
Voltage range, V
IN
8 12 14 V
Maximum input current V
IN
= 8 V, I
OUT
= 25 A 4.3 A
No load input current V
IN
= 14 V, I
OUT
= 0 A with auto skip mode 1 mA
OUTPUT CHARACTERISTICS
Output voltage, V
OUT
1.2 V
Output load current, I
OUT
0 25 A
Output voltage regulation
Line regulation: input voltage = 8 V to 14 V 0.5%
Load regulation: output current = 0 A to 25 A 0.5%
Output voltage ripple V
IN
= 12 V, I
OUT
= 25 A 10 mVpp
Output over current IOUT_OC fault flag asserted 25 A
SYSTEMS CHARACTERISTICS
Switching frequency 425 kHz
Peak efficiency V
IN
= 12 V, I
OUT
= 10 A 91.0%
Full load efficiency V
IN
= 12 V, I
OUT
= 25 A 87.9%
Loop bandwidth V
IN
= 12 V, I
OUT
= 25 A 111 kHz
Phase margin V
IN
= 12 V, I
OUT
= 25 A 91.4 °
Operating temperature 25 °C
(1) This design uses TI Default PMBus settings
www.ti.com Electrical Performance Specifications
SLVU719B – MAY 2012 – REVISED NOVEMBER 2021
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