Texas Instruments TPS53124, User Manual

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1 Description
The TPS53124 is a dual, adaptive on-time D-CAP ™ mode synchronous buck controller. The TPS53124 enables
system designers to cost-effectively complete the suite of DTV POL regulators and digital STB regulators with a
low external component count. The main control loop for the TPS53124 uses the D-CAP mode that is optimized
for low-ESR output capacitors such as POSCAP, SP-CAP, or high polymer chemistry and provides fast transient
response with no external compensation. The TPS53124 provides conversion voltages (drain voltage for the
synchronous high-side MOSFET) from 4.5 V to 24 V and output voltages from 0.76 V to 5.5 V.
The HPA332 (TPS53124EVM) evaluation module is a high-efficiency, dual synchronous buck converter providing
1.05 V at 4 A and 1.8 V at 4 A from 5-V to 22-V input. This user's guide describes the HPA332 performance.
2 Electrical Performance
Table 2-1. Electrical Performance
SPECIFICATIONS TEST CONDITIONS MIN TYP MAX UNIT
Input voltage range (VIN) 5 12 22 V
CH1
Output voltage 1.05 V
Operating frequency V
IN
= 12 V, I
out1
= 1 A 280 kHz
Output current 4 A
Overcurrent limit V
IN
= 12 V 5 A
Output ripple voltage V
IN
= 12 V, I
out1
= 4 A 29 mVp-p
CH2
Output voltage 1.8 V
Operating frequency V
IN
= 12 V, I
out2
= 1 A 360 kHz
Output current 4 A
Overcurrent limit V
IN
= 12 V 5 A
Output ripple voltage V
IN
= 12 V, I
out2
= 4 A 33 mVp-p
Description www.ti.com
2 TPS53124 Buck Controller Evaluation Module User's Guide SLUU333A – JULY 2008 – REVISED JANUARY 2022
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