Texas Instruments TPS25740AEVM-741, Руководство пользователя, Страница: 3 / 32

LM5175
Buck Boost
(Always ON)
TPS25740 -
USB PD
Controller
U
SB
T
yp
e
C
R
e
ce
p
ta
cl
e
VIN (9 V to 16 V) V
BUS
CC1
CC2
CTL1
CTL2
DCDC_OUT
Vpwr
www.ti.com
Introduction
3 SLVUAP7A – April 2016 – Revised September 2016
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
TPS25740EVM-741 and TPS25740AEVM-741 Evaluation Module User
Guide
1 Introduction
The TPS25740EVM-741 and TPS25740AEVM-741 allows the user to evaluate performance of the
TPS25740 and TPS25740A in an adapter-like application. Note that the TPS25740 and TPS25740A are
powered from the output of the DC/DC converter and do not require an external LDO. The upstream
converter remains ON at all times to ensure that the TPS25740 and TPS25740A remain powered and can
detect the UFP connection.
Figure 1. Block Diagram
1.1 Features
The TPS25740x features include:
• Type C PD communication protocol via CC1 and CC2 pins.
• Variable output voltage depending on request.
– 5 V, 12 V, and 20 V for TPS25740EVM-741
– 5 V, 9 V, and 15 V for TPS25740AEVM-741
• Up to 5-A output current for all voltage levels. Default is 3 A.
• Smooth voltage transitions per USB PD specification.
• Barrel jack input. (The ETSA190342UDC-P5P-SZ adapter has been tested with the EVM.)
1.2 Applications
The TPS25740x can be used in the following applications:
• Automotive USB ports
• Power banks
• USB power delivery adaptors
1.3 Electrical Specifications
Table 1 lists the EVM electrical specifications.
Table 1. TPS25740 and TPS25740A EVM Electrical and Performance Specifications at 25°C
Characteristic TPS25740EVM-741 TPS25740AEVM-741
Input voltage range (Recommended) 9 V to 16 V 9 V to 16 V
Input voltage range (Absolute Maximum) 0 V to 40 V 0 V to 40 V
Operating output current Default: 3 A Default: 3 A
Configurable to 5 A Configurable to 5 A
Overcurrent protection Default: 4.2 A Default: 4.2 A
Configurable to 6.3 A Configurable to 6.3 A
Output voltages 5 V, 12 V, 20 V 5 V, 9 V, 15 V
UVLO rising on input 7.75 V 7.75 V
UVLO falling on input 7.25 V 7.25 V
Advertised voltages 5 V, 12 V, 20 V 5 V, 9 V, 15 V
Advertised current 3 A (default) 3 A (default)