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DC-DC Reference Designs
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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.
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| Featured Kits |
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IRDC3847 High Current (Gen3.0)
Advanced Integrated Point of Load DC-DC Voltage Regulator
- Remote Differential Voltage Sense
- Programmable Switching Frequency up to 1.5MHz
- Single Rail Operation, Tracking, Margining, OCP
| Reference Design |
Featured Part |
Vin (V) |
Vout (V) |
Imax (A) |
kHz |
| IRDC3847 |
IR3847 |
12V |
1.2V |
25 |
600kHz |
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IRDC3891 Dual Output (Gen 3.0)
Advanced Integrated Point of Load DC-DC Voltage Regulator
- Dual Output in 5x6mm PQFN
- Out of phase operation to reduce Input Capacitors
- Programmable Switching Frequency up to 1.5MHz
| Reference Design |
Featured Part |
Vin (V) |
Vout (V) |
Imax (A) |
kHz |
| Number |
Package |
| IRDC3891 |
IR3891 |
QFN 5x6 |
12V |
1.2V |
4 |
600kHz |
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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
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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.
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IRDCiP1827
- 25A Single-Input Synchronous Buck Regulator
- Featuring iP1827
- VIN = 12V, VOUT = 1.8V,
- IOUT max = 25A | FSw = 600kHz
IRDCiP1837
- 35A Single-Input Synchronous Buck Regulator
- Featuring iP1837
- VIN = 12V, VOUT = 1.8V,
- IOUT max = 35A | FSw = 600kHz
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IRDC3651
Wide Input Synchronous Buck Regulator
- Ideal for onboard DC to DC applications
- 48 Vin, 3.3 Vout @ 10A Iout
- 100 KHz switching frequency
- Featuring IR3651SPBF controller
- Foot print compatible with either DirectFETs or SO8 MOSFETs
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IRDC3640
25A, 600kHz, Synchronous Buck Controller Reference Design
- Featuring IR3640M PWM Controller
- Programmable soft-start ramp
- Power Good
- Thermal protection
- Over voltage and over current protection
- Programmable switching frequency
- Tracking input
- Enable input
- Input under-voltage lockout for proper start-up
- Pre-bias start-up.
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| Reference Design |
Part Number |
Description |
| IRDC3473 |
IR3473 |
Constant On-Time Integrated Point of Load DC-DC Voltage Regulator with VIN = 12V, VOUT = 1.05V, FS = 300kHz, up to 6A |
| IRDC3475 |
IR3475 |
Constant On-Time Integrated Point of Load DC-DC Voltage Regulator with VIN = 12V, VOUT = 1.05V, FS = 300kHz, up to 10A |
| IRDC3476 |
IR3476 |
Constant On-Time Integrated Point of Load DC-DC Voltage Regulator with VIN = 12V, VOUT = 1.05V, FS = 300kHz, up to 12A |
| IRDC3477 |
IR3477 |
Constant On-Time Integrated Point of Load DC-DC Voltage Regulator with VIN = 12V, VOUT = 1.05V, FS = 300kHz, up to 15A |
| IRDC3640 |
IR3640 |
25A, 600kHz, Synchronous Buck Controller Reference Design |
| IRDC3651 |
IR3651PBF |
Reference design kit featuring Wide Input Synchronous Buck Regulator |
| IRDC3837 |
IR3837 |
Integrated Point of Load DC-DC Voltage Regulator (Gen 2.1) with Vin 12V, Vout 1.8V Imax 14A and Fs 600kHz |
| IRDC3838 |
IR3838 |
Integrated Point of Load DC-DC Voltage Regulator (Gen 2.1) with Vin 12V, Vout 1.8V Imax 10A and Fs 600kHz |
| IRDC3839 |
IR3839 |
Integrated Point of Load DC-DC Voltage Regulator (Gen 2.1) with Vin 12V, Vout 1.8V Imax 6A and Fs 600kHz |
| IRDC3840W |
IR3840W |
Integrated Point of Load DC-DC Voltage Regulator (Gen 2.1) with Vin 12V, Vout 1.8V Imax 12A and Fs 600kHz |
| IRDC3841W |
IR3841W |
Integrated Point of Load DC-DC Voltage Regulator (Gen 2.1) with Vin 12V, Vout 1.8V Imax 8A and Fs 600kHz |
| IRDC3842W |
IR3842W |
Integrated Point of Load DC-DC Voltage Regulator (Gen 2.1) with Vin 12V, Vout 1.8V Imax 4A and Fs 600kHz |
| IRDC3853 |
IR3853 |
Integrated Point of Load DC-DC Voltage Regulator (Gen 2.1) with Vin 12V, Vout 1.8V Imax 4A and Fs 600kHz |
| IRDC3859 |
IR3859 |
Integrated Point of Load DC-DC Voltage Regulator (Gen 2.1) with Vin 12V, Vout 1.8V Imax 9A and Fs 600kHz |
| IRDC3863 |
IR3863 |
Constant On-Time Integrated Point of Load DC-DC Voltage Regulator with VIN = 12V, VOUT = 1.05V, FS = 300kHz, up to 6A |
| IRDC3865 |
IR3865 |
Constant On-Time Integrated Point of Load DC-DC Voltage Regulator with VIN = 12V, VOUT = 1.05V, FS = 300kHz, up to 10A |
| IRDC3871 |
IR3871 |
Integrated Point of Load DC-DC Voltage Regulator (Gen 2.1) with Vin 12V, Vout 1.1V Imax 8A and Fs 300kHz |
| IRDC3876 |
IR3876 |
High Efficiency Integrated Point of Load DC-DC Voltage Regulator with Vin = 7V to 16V, Vout = 1.05V, Imax up to 12A, and Fs = 300kHz |
| IRDC3894 |
IR3894 |
Advanced Integrated Point of Load DC-DC Voltage Regulator with Vin = 12V, Vout = 1.2V, Imax up to 12A, and Fs = 600kHz |
| IRDC3895 |
IR3895 |
Advanced Integrated Point of Load DC-DC Voltage Regulator with Vin = 12V, Vout = 1.2V, Imax up to 16A, and Fs = 600kHz |
| IRDC3897 |
IR3897 |
Advanced Integrated Point of Load DC-DC Voltage Regulator with Vin = 12V, Vout = 1.2V, Imax up to 4A, and Fs = 600kHz |
| IRDC3898 |
IR3898 |
Advanced Integrated Point of Load DC-DC Voltage Regulator with Vin = 12V, Vout = 1.2V, Imax up to 6A, and Fs = 600kHz |
| IRDC3899 |
IR3899 |
Advanced Integrated Point of Load DC-DC Voltage Regulator with Vin = 12V, Vout = 1.2V, Imax up to 9A, and Fs = 600kHz |
| IRDCiP1827 |
iP1827 |
Reference Design kit for the iP1827 a 600kHz, 25A SupIRBuck Synchronous Buck Converter |
| IRDCiP1837 |
iP1837 |
Reference Design kit for the iP1837 a 600kHz, 35A SupIRBuck Synchronous Buck Converter |
| A limited supply of these archived reference designs still may be available. To
learn if quantities are available in your area, please click on the reference
design part number listed below, then select your region and click on “Check
Availability.” |
| Reference Design |
Part Number |
Description |
| IRDC3831W |
IR3831W |
Integrated Point of Load DC-DC Voltage Regulator (Gen 2.1) with Vin 12V, Vout 0.75V Imax 8A and Fs 400kHz |
| IRDC3832W |
IR3832W |
Integrated Point of Load DC-DC Voltage Regulator (Gen 2.1) with Vin 12V, Vout 0.75V Imax 4A and Fs 400kHz |
| IRDC3843A |
IR3843A |
Integrated Point of Load DC-DC Voltage Regulator (Gen 2.0) with Vin 12V, Vout 1.8V Imax 3A and Fs 600kHz |
| IRDC3843W |
IR3843W |
Integrated Point of Load DC-DC Voltage Regulator (Gen 2.1) with Vin 12V, Vout 1.8V Imax 2A and Fs 600kHz |
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