PMP7390(#1): 5V @ 4.2A, Dual USB @ 2.1A, 12V in

Summary

Using the TPS40170 PWM Buck Controller, this power management reference design provides a regulated 5V to power 2 USB ports at 2.1A each (total 4.2A) in a small form-factor. The design has been optimized for a nominal 12V input and accepts 8-60V with TPS40170.

Form factor complies to UL 2089 and ANSI/SAE J563
Meets BC1.2 for DCP with one TPS2511 per port
Supports both USB 2.0 and 3.0 power switch requirements
TPS2511 USB power switch also offers the data line control to charge many devices

Specifications

Manufacturer	Texas Instruments
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Multi Output
Eval Board	Board not Stocked
Topology	Step Down
Outputs and Type	2 Non-Isolated
Voltage Out: Highest Current First	5V, 5V
Current Out	2.1A per Channel
Voltage In	9 ~ 60 VDC
Efficiency @ Conditions	>90%, 9V in, 5V @ 0.2 ~ 4.2 A >90%, 30V in, 5V @ 1.9 ~ 4.2 A >90%, 20V in, 5V @ 0.9 ~ 4.2 A >90%, 12V in, 5V @ 0.4 ~ 4.2 A >85%, 40V in, 5V @ 1.3 ~ 4.2 A
Voltage Out Range	- Fixed
Features	LDO Regulator(s), On-Chip Power Good Output Pre-Biased Startup Shutdown, Enable, Standby Soft Start Thermal Protection Under Voltage Protection, Brown-Out USB Interface Voltage Reference Voltage Tracking
Switching Frequency	100 ~ 600 kHz
Standby Current [Typical]	1 µA
Quiescent Current [Typical]	- Not Given
Component Count + Extras	40 + 8
Internal Switch	No
Design Author	Texas Instruments
Application / Target Market	Automotive Battery Chargers USB Powered Devices
Standby Current [Maximum]	2.5 µA
Quiescent Current [Maximum]	4.5 mA
Main I.C. Base Part	TPS2511 TPS40170
Date Created By Author	2012-05
Date Added To Library	2014-11