Unable to display component due to error "Import resulted in an exception".

Need Help?

DC-DC Reference Designs

International Rectifier offers a wide range of reference designs for DC-DC applications. Each reference design kit includes a fully assembled and tested demo board along with applicable datasheets and application notes. A user guide contains the schematic and bill of materials for the evaluation board. The guide describes operation and use of the evaluation board itself.

International Rectifier now offers Simplis and IcePak models. The Simplis and IcePak models can be found under the Design Library tab below.

Featured Kits
All Kits
Design Library

IRDC389 Series (Gen 3.0)

Advanced Integrated Point of Load DC-DC Voltage Regulator

Enhanced Line/Load Regulation with Feed-Forward
Programmable Switching Frequency up to 1.5MHz
Single Rail Operation, Tracking, Margining, OCP

Reference Design	Featured Part		Vin (V)	Vout (V)	Imax (A)	kHz
Reference Design	Number	Package	Vin (V)	Vout (V)	Imax (A)	kHz
IRDC3847	IR3847	QFN 5x6	12V	1.2V	25	600kHz
IRDC3894	IR3894	QFN 5x6	12V	1.2V	12	600kHz
IRDC3895	IR3895	QFN 5x6	12V	1.2V	16	600kHz
IRDC3897	IR3897	QFN 4x5	12V	1.2V	4	600kHz
IRDC3898	IR3898	QFN 4x5	12V	1.2V	6	600kHz
IRDC3899	IR3899	QFN 4x5	12V	1.2V	9	600kHz
IRDC3823	IR3823	QFN 3.5x3.5	12V	1.2V	3	1000kHz

IRDC3891 and IRDC3892 Dual Output (Gen 3.0)

Advanced Integrated Point of Load DC-DC Voltage Regulator

Very small dual output solution size
Dual Output in 5x6mm PQFN
Out of phase operation to reduce Input Capacitors
Programmable Switching Frequency up to 1.5MHz (IRDC3891)
Programmable Switching Frequency up to 1.0MHz (IRDC3892)

Reference Design	Featured Part		Vin (V)	Vout (V)	Imax (A)	kHz
Reference Design	Number	Package	Vin (V)	Vout (V)	Imax (A)	kHz
IRDC3891	IR3891	QFN 5x6	12V	1.2V	4	600kHz
IRDC3892	IR3892	QFN 5x6	12V	1.2V	6	600kHz

IRDC347 and IRDC386 Series

Constant On-Time Integrated Point of Load DC-DC Voltage Regulator Designed for Mobile Products that Require High Light Load Efficiency

Programmable Switching Frequency,
Thermally Compensated Over-Current Protection,
Soft Start, Pre-Bias Start Up, Enable Input, Power Good Output.

Reference Design	Featured Part		Vin (V)	Vout (V)	Imax (A)	kHz
Reference Design	Number	Package	Vin (V)	Vout (V)	Imax (A)	kHz
IRDC3473	IR3473	QFN 5x6	12V	1.05V	6	300kHz
IRDC3475	IR3475	QFN 5x6	12V	1.05V	10	300kHz
IRDC3476	IR3476	QFN 5x6	12V	1.05V	12	300kHz
IRDC3477	IR3477	QFN 5x6	12V	1.05V	15	300kHz
IRDC3863	IR3863	QFN 4x5	12V	1.05V	6	300kHz
IRDC3865	IR3865	QFN 4x5	12V	1.05V	10	300kHz

Top

Voltage Regulator Reference Designs

30 Matching Results

Add to Parts ListAdd to Parts List

Export to XLS

Reset FiltersReset Filters

Edit Parameters

Add All Parameters

Drag and drop parameters to add, remove, and reorder.

1k Budgetary Pricing
Halogen-Free
Technology

Part
Base Part Status
Input Voltage (V)
Output Current (A)
Output Voltage (V)
Switching Frequency (kHz)
Featured Part

Reset to Defaults

	Base Part Status Obsolete	Input Voltage (V) 12V 7V - 16V	Output Current (A) 35 3	Output Voltage (V) 1.05V 1.2V 1.8V	Switching Frequency (kHz) 1000kHz 300kHz 600kHz	Featured Part IR3473M IR3475M IR3476M IR3477M IR3823M IR3837M IR3838M IR3839M IR3840WM IR3841WM IR3842WM IR3846M IR3847M IR3853M IR3856M IR3859M IR3863M IR3865M IR3871M IR3876M IR3891M IR3892M IR3894M IR3895M IR3897M IR3898M IR3899M	1k Budgetary Pricing 99 24	Halogen-Free No Yes	Technology POL
IRDC38060 Datasheet Part Detail Page	Obsolete
IRDC38063 Datasheet Part Detail Page	Obsolete
IRDC38062 Datasheet Part Detail Page	Obsolete
IRDC3892 Reference Design Part Detail Page	Obsolete	12V	6	1.2V	600kHz	IR3892M	99.0	Yes	POL
IRDC3846 Reference Design Part Detail Page	Obsolete	12V	35	1.2V	600kHz	IR3846M	99.0	No	POL
IRDC3823 Reference Design Part Detail Page	Obsolete	12V	3	1.2V	1000kHz	IR3823M	29.99	Yes	POL
IRDC3847 Reference Design Part Detail Page	Obsolete	12V	25	1.2V	600kHz	IR3847M	29.99	Yes	POL
IRDC3891 Reference Design Part Detail Page	Obsolete	12V	4	1.2V	600kHz	IR3891M	29.99	Yes	POL
IRDC3894 Reference Design Part Detail Page	Obsolete	12V	12	1.2V	600kHz	IR3894M	25.0	No	POL
IRDC3895 Reference Design Part Detail Page	Obsolete	12V	16	1.2V	600kHz	IR3895M	25.0	No	POL
IRDC3897 Reference Design Part Detail Page	Obsolete	12V	4	1.2V	600kHz	IR3897M	24.375	No	POL
IRDC3899 Reference Design Part Detail Page	Obsolete	12V	9	1.2V	600kHz	IR3899M	24.375	No	POL
IRDC3898 Reference Design Part Detail Page	Obsolete	12V	6	1.2V	600kHz	IR3898M	24.375	No	POL
IRDC3876 Reference Design Part Detail Page	Obsolete	7V - 16V	12	1.05V	300kHz	IR3876M	94.0	No	POL
IRDC3476 Reference Design Part Detail Page	Obsolete	12V	12	1.05V	300kHz	IR3476M	29.99	No	POL
IRDC3477 Reference Design Part Detail Page	Obsolete	12V	15	1.05V	300kHz	IR3477M	29.99	No	POL
IRDC3863 Reference Design Part Detail Page	Obsolete	12V	6	1.05V	300kHz	IR3863M	29.99	No	POL
IRDC3475 Reference Design Part Detail Page	Obsolete	12V	10	1.05V	300kHz	IR3475M	29.99	No	POL
IRDC3865 Reference Design Part Detail Page	Obsolete	12V	10	1.05V	300kHz	IR3865M	29.99	No	POL
IRDC3473 Reference Design Part Detail Page	Obsolete	12V	6	1.05V	300kHz	IR3473M	29.99	No	POL
IRDC3856 Reference Design Part Detail Page	Obsolete	12V	6	1.8V	600kHz	IR3856M	99.0	No	POL
IRDC3859 Reference Design Part Detail Page	Obsolete	12V	9	1.8V	600kHz	IR3859M	99.0	No	POL
IRDC3853 Reference Design Part Detail Page	Obsolete	12V	4	1.8V	600kHz	IR3853M	99.0	No	POL
IRDC3871 Reference Design Part Detail Page	Obsolete	12V	8	1.05V	300kHz	IR3871M	94.0	No	POL
IRDC3839 Reference Design Part Detail Page	Obsolete	12V	6	1.8V	600kHz	IR3839M	99.0	No	POL
IRDC3837 Reference Design Part Detail Page	Obsolete	12V	14	1.8V	600kHz	IR3837M	99.0	No	POL
IRDC3838 Reference Design Part Detail Page	Obsolete	12V	10	1.8V	600kHz	IR3838M	99.0	No	POL
IRDC3842W Reference Design Part Detail Page	Obsolete	12V	4	1.8V	600kHz	IR3842WM	99.0	No	POL
IRDC3840W Reference Design Part Detail Page	Obsolete	12V	12	1.8V	600kHz	IR3840WM	99.0	No	POL
IRDC3841W Reference Design Part Detail Page	Obsolete	12V	8	1.8V	600kHz	IR3841WM	99.0	No	POL

International Rectifier has designed and validated many common DC-DC applications. To save you time and ensure reliable operation, we have compiled this library of commonly used designs, including schematics and layout, for you to use, without modification, directly in your systems. The accompanying User Guide contains start up instructions, operating waveforms, schematic and bill of materials.

	Select your Output Voltage
	Single Output	Dual Output
	0.6V 0.75V 0.9V-1.05 1.2V 1.5V 1.8V 2.5V 3.3V 5.0V	1.2V-5.0V

Single Output 0.6V
Current	Design Parameters	Part Number	User Guide	Schematic	Layout	Simplis Model (version 7.2F)	Thermal Model
				(.DSN)	(.BRD)		icepak	Notes
<3A
4A	400kHz	IR3897	User Guide			Simplis Model	Thermal Model	TM Notes
6A	400kHz	IR3898	User Guide	Schematic		Simplis Model
7A-9A
10A-16A
17A-35A

Single Output 0.75V
Current	Design Parameters	Part Number	User Guide	Schematic	Layout	Simplis Model (version 7.2F)	Thermal Model
				(.DSN)	(.BRD)		icepak	Notes
<3A
4A-6A	4A, 600kHz	IR3897	User Guide	Schematic		Simplis Model	Thermal Model	TM Notes
7A-9A
10A-16A
17A-35A

Single Output 0.9V - 1.05V ^*
Current	Design Parameters	Part Number	User Guide	Schematic	Layout	Simplis Model (version 7.2F)	Thermal Model
Current	Design Parameters	Part Number	User Guide	(.DSN)	(.BRD)	Simplis Model (version 7.2F)	icepak	Notes
<3A	1.5A, 1.05V, 600kHz	IR3897	User Guide	Schematic		Simplis Model	Thermal Model	TM Notes
4A-6A	6A, 1.05V, 600kHz	IR3898	User Guide	Schematic		Simplis Model
7A-9A	9.5A, 0.9V, 450kHz	IR3894	User Guide	Schematic			Thermal Model	TM Notes
	8A, 1.05V, 500kHz	IR3899	User Guide	Schematic	Layout	Simplis Model	Thermal Model	TM Notes
	9A, 0.95V, 400kHz	IR3894	User Guide	Schematic	Layout		Thermal Model	TM Notes
	9A, 0.90V, 1MHz	IR3899	User Guide		Layout	Simplis Model	Thermal Model	TM Notes
10A-16A	10A, 1.0V, 600kHz	IR3448	User Guide			Simplis Model	Thermal Model
	16A, 0.9V, 1MHz	IR3448	User Guide			Simplis Model	Thermal Model
	16A, 0.9V, 1MHz	IR3847	User Guide	Schematic	Layout	Simplis Model	Thermal Model	TM Notes
	16A, 0.9V, 1MHz	IR3895	User Guide		Layout	Simplis Model
17A-35A	21A, 0.9V, 400kHz	IR3847	User Guide	Schematic	Layout	Simplis Model	Thermal Model	TM Notes
	20A, 0.9V, 750kHz	IR3447	User Guide		Layout	Simplis Model
	25A, 0.9V, 400kHz	IR3846	User Guide		Layout		Thermal Model	TM Notes
	20A, 0.925V, 1.2MHz	IR3847	User Guide	Schematic	Layout	Simplis Model	Thermal Model	TM Notes
	25A, 1.0V, 300kHz, 5Vin	IR3847	User Guide	Schematic	Layout	Simplis Model	Thermal Model	TM Notes
* Note - The design can be used for any voltage in the range 0.9V - 1.05V by modifying the feedback resistor values. All other components remain unchanged.

Single Output 1.2V
Current	Design Parameters	Part Number	User Guide	Schematic	Layout	Simplis Model (version 7.2F)	Thermal Model
Current	Design Parameters	Part Number	User Guide	(.DSN)	(.BRD)	Simplis Model (version 7.2F)	icepak	Notes
<3A	3A, 1MHz	IR3823	User Guide	Schematic	Layout	Simplis Model
4A-6A	4A, 600kHz	IR3897	User Guide	Schematic		Simplis Model	Thermal Model	TM Notes
	4A, 400kHz	IR3897	User Guide	Schematic		Simplis Model	Thermal Model	TM Notes
	6A, 600kHz	IR3898	User Guide	Schematic		Simplis Model
	6A, 400kHz	IR3898	User Guide	Schematic		Simplis Model
	6A, 607kHz,PMBus	IR38060	User Guide	Schematic/ Config File	Layout
7A-9A	9A, 600kHz	IR3899	User Guide	Schematic	Layout	Simplis Model	Thermal Model	TM Notes
7A-9A	9A, 400kHz	IR3899	User Guide	Schematic	Layout	Simplis Model	Thermal Model	TM Notes
10A-16A	12A, 600kHz	IR3894	User Guide	Schematic			Thermal Model	TM Notes
	12A, 400kHz	IR3894	User Guide	Schematic			Thermal Model	TM Notes
	15A, 607kHz, PMBus	IR38062	User Guide	Schematic/ Config File	Layout
	16A, 600kHz	IR3895	User Guide	Schematic	Layout	Simplis Model
	16A, 400kHz	IR3895	User Guide	Schematic	Layout	Simplis Model
17A-35A	25A, 600kHz	IR3846	User Guide		Layout		Thermal Model	TM Notes
	25A, 600kHz	IR3847	User Guide	Schematic	Layout	Simplis Model	Thermal Model	TM Notes
	25A, 607kHz, PMBus	IR38063	User Guide	Schematic/ Config File	Layout
	25A, 1MHz	IR3847	User Guide		Layout	Simplis Model	Thermal Model	TM Notes

Single Output 1.5V
Current	Design Parameters	Part Number	User Guide	Schematic	Layout	Simplis Model (version 7.2F)	Thermal Model
Current	Design Parameters	Part Number	User Guide	(.DSN)	(.BRD)	Simplis Model (version 7.2F)	icepak	Notes
<3A
4A-6A	4A, 400kHz	IR3897	User Guide	Schematic		Simplis Model	Thermal Model	TM Notes
7A-9A
10A-16A	16A, 400kHz	IR3895	User Guide	Schematic	Layout	Simplis Model
17A-35A

Single Output 1.8V
Current	Design Parameters	Part Number	User Guide	Schematic	Layout	Simplis Model (version 7.2F)	Thermal Model
Current	Design Parameters	Part Number	User Guide	(.DSN)	(.BRD)	Simplis Model (version 7.2F)	icepak	Notes
<3A	2.75A, 700kHz	IR3897	User Guide	Schematic		Simplis Model	Thermal Model	TM Notes
3A	3A, 1MHz	IR3823	User Guide		Layout	Simplis Model
4A-6A	4A, 400kHz, 3.3Vin	IR3897	User Guide	Schematic		Simplis Model	Thermal Model	TM Notes
7A-9A	8.5A, 1.2MHz	IR3899	User Guide		Layout	Simplis Model	Thermal Model	TM Notes
10A-16A	15A, 300kHz, 0.9V - 1.8V	IR3447	User Guide		Layout	Simplis Model
17A-35A

Single Output 2.5V
Current	Design Parameters	Part Number	User Guide	Schematic	Layout	Simplis Model (version 7.2F)	Thermal Model
Current	Design Parameters	Part Number	User Guide	(.DSN)	(.BRD)	Simplis Model (version 7.2F)	icepak	Notes
<3A
4A-6A	3.8A, 2.625V, 600kHz	IR3897	User Guide	Schematic		Simplis Model	Thermal Model	TM Notes
7A-9A
10A-16A	14A, 600kHz	IR3895	User Guide	Schematic	Layout	Simplis Model
17A-35A	20A, 2.625V, 600kHz	IR3447	User Guide	Schematic	Layout	Simplis Model

Single Output 3.3V
Current	Design Parameters	Part Number	User Guide	Schematic	Layout	Simplis Model (version 7.2F)	Thermal Model
Current	Design Parameters	Part Number	User Guide	(.DSN)	(.BRD)	Simplis Model (version 7.2F)	icepak	Notes
<3A
4A-6A	4A, 1MHz	IR3897	User Guide			Simplis Model	Thermal Model	TM Notes
4A-6A	6A, 1MHz	IR3898	User Guide			Simplis Model
7A-9A	7A, 600kHz	IR3899	User Guide	Schematic	Layout	Simplis Model
7A-9A	9A, 1MHz	IR3899	User Guide		Layout	Simplis Model	Thermal Model	TM Notes
10A-16A	10A, 600kHz	IR3894	User Guide				Thermal Model	TM Notes
	12A, 1MHz	IR3894	User Guide				Thermal Model	TM Notes
	16A, 400kHz	IR3895	User Guide	Schematic	Layout	Simplis Model
	16A, 1MHz	IR3895	User Guide		Layout	Simplis Model
17A-35A	25A, 1MHz	IR3847	User Guide		Layout	Simplis Model	Thermal Model	TM Notes
17A-35A	35A, 300kHz	IR3846	User Guide		Layout		Thermal Model	TM Notes

Single Output 5.0V
Current	Design Parameters	Part Number	User Guide	Schematic	Layout	Simplis Model (version 7.2F)	Thermal Model
Current	Design Parameters	Part Number	User Guide	(.DSN)	(.BRD)	Simplis Model (version 7.2F)	icepak	Notes
<3A
4A-6A	4A, 1MHz	IR3898	User Guide	Schematic		Simplis Model
7A-9A
10A-16A	10A, 700kHz	IR3895	User Guide	Schematic	Layout	Simplis Model
	10A, 600kHz	IR3894	User Guide	Schematic			Thermal Model	TM Notes
	16A, 400kHz	IR3895	User Guide	Schematic	Layout	Simplis Model
17A-35A	25A, 600kHz	IR3447	User Guide	Schematic	Layout	Simplis Model
17A-35A	35A, 300kHz	IR3846	User Guide		Layout		Thermal Model	TM Notes

IR3891 4A+4A Dual Output
Design Parameters					User Guide	Schematic	Layout	Simplis Model (version 7.2F)
Voltage-1	Current-1	Voltage-2	Current-2	Frequency	User Guide	(.DSN)	(.BRD)	Simplis Model (version 7.2F)
1.2V	3A	1.2V	3A	450kHz	User Guide		Layout	Simplis Model
1.2V	3A	3.3V	3A	600kHz	User Guide		Layout
1.5V	2.6A	1.1V	0.3A	600kHz	User Guide	Schematic	Layout
1.5V	4A	3.3V	4A	600kHz	User Guide		Layout
1.8V	4A	1.2V	4A	600kHz	User Guide		Layout
2.5V	4A	1.8V	4A	700kHz, 5Vin	User Guide		Layout
2.85V	4A	3.3V	4A	600kHz	User Guide		Layout
3.3V	0.9A	1.8V	0.3A	600kHz	User Guide	Schematic	Layout
3.3V	1A	2.5V	1A	900kHz	User Guide		Layout
5V	4A	4.3V	4A	600kHz	User Guide	Schematic	Layout