Texas Instruments CSD87381PEVM-603, User Manual, Page: 2 / 19

Description
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1 Description
The CSD87381PEVM-603 is designed to use a regulated voltage ranging 8 to 20 V to produce 1.35-V
output at up to 15 A of load current. The CSD87381PEVM-603 demonstrates Power Block II together with
TI controller TPS51219 in a typical low voltage application with D-CAP2™ mode operation. The EVM also
provides a number of testpoints to evaluate the performance of the CSD87381P.
1.1 Typical Applications
• Notebook computers
• I/O supplies
• System power supplies
1.2 Features
The CSD87381PEVM-603 features:
• 2% tolerance 1.35-V output voltage
• Up to 15-ADC steady state output current
• 300-kHz switching frequency
• More than 92% peak efficiency
2 Electrical Performance Specifications
Table 1. CSD87381PEVM-603 Electrical Performance Specifications
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT CHARACTERISTICS
VIN voltage 12 20 V
Voltage range
5V voltage 4.5 5 5.5 V
OUTPUT CHARACTERISTICS
(1)
Output voltage, VOUT VIN = 12 V, IOUT = 10 A 1.35 V
Output load current, IOUT 10 15 A
SYSTEMS CHARACTERISTICS
Switching frequency VIN = 12 V, VOUT = 1.35 V, IOUT = 10 A 300 kHz
Peak efficiency VIN = 12 V, VOUT = 1.35 V 92.0
%
Full load efficiency VIN = 12 V, VOUT = 1.35 V, IOUT = 12 A 86.0
Operating temperature 25 °C
(1)
The output voltage can be adjusted by changing the values of R104 and R107 in Figure 1 . For details, refer to the TPS51219
data sheet, SLUSAG1 . The TPS51219 device supports output voltage from 0.5 to 2 V.
2 High Power Density, Low Profile NexFET™ Power Block II for Notebook SLPU003A – February 2014 – Revised February 2014
Power Supply
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