Design contains obsolete parts

IRDC3894: 1.2V @ 12A, 12V in

Summary

The IR3894 is a synchronous buck converter, providing a compact, high performance and flexible solution in a small 5mm X 6 mm Power QFN package.

Key features offered by the IR3894 include internal digital soft start/soft stop, precision 0.5 V reference voltage, Power Good, thermal protection, programmable switching frequency, enable input, input under-voltage lockout for proper start-up, enhanced line/load regulation with feed forward, external frequency synchronization with smooth clocking, smart internal LDO and pre-bias start-up.

Output over-current protection function is implemented by sensing the voltage developed across the on-resistance of the synchronous rectifier MOSFET for optimum cost and performance and the current limit is thermally compensated.

The user guide contains the schematic and bill of materials for the IR3894 evaluation board. The guide describes operation and use of the evaluation board itself. Detailed application information for IR3894 is available in the IR3894 data sheet.

Specifications

Manufacturer	Infineon Technologies
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	IRDC3894-ND
Eval Board Supplier	Infineon Technologies
Eval Board	Normally In Stock
Topology	Step Down
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	1.2 V
Current Out	12 A
Voltage In	12 V
Efficiency @ Conditions	>85%, 12V in, 1.2V @ 2 ~ 11.8 A
Voltage Out Range	0.86 x Vin
Features	Current Limit (Adj. or Fixed) LDO Regulator(s), On-Chip Over Current Protection Power Good Output Pre-Biased Startup Shutdown, Enable, Standby Soft Start Synchronizable Thermal Protection Under Voltage Protection, Brown-Out Voltage Reference
Switching Frequency	600 kHz
Standby Current [Typical]	- Not Given
Quiescent Current [Typical]	14 mA
Component Count + Extras	40 + 4
Internal Switch	Yes
Design Author	Infineon Technologies
Application / Target Market	Point of Load (PoL) Servers Telecom
Standby Current [Maximum]	100 µA
Quiescent Current [Maximum]	18 mA
Main I.C. Base Part	IR3894
Date Created By Author	2013-01
Date Added To Library	2020-07