Datasheet IR3826 (Infineon) - 2
| Fabricante | Infineon |
| Descripción | OptiMOS™ IPOL 23 A single-voltage synchronous buck regulator |
| Páginas / Página | 53 / 2 — IR 8. OptiMOS™ IPOL. 23 A single-voltage synchronous Buck regulator. … |
| Revisión | 02_04 |
| Formato / tamaño de archivo | PDF / 2.3 Mb |
| Idioma del documento | Inglés |
IR 8. OptiMOS™ IPOL. 23 A single-voltage synchronous Buck regulator. Table of contents. Table of contents Features .. 1
Línea de modelo para esta hoja de datos
Versión de texto del documento
link to page 1 link to page 1 link to page 1 link to page 1 link to page 2 link to page 4 link to page 5 link to page 6 link to page 7 link to page 8 link to page 9 link to page 10 link to page 13 link to page 13 link to page 14 link to page 15 link to page 16 link to page 17 link to page 18 link to page 20 link to page 20 link to page 20 link to page 21 link to page 21 link to page 23 link to page 23 link to page 24 link to page 25 link to page 25 link to page 26 link to page 26 link to page 27 link to page 27 link to page 28 link to page 29 link to page 29 link to page 31 link to page 31 link to page 31 link to page 32 link to page 32 link to page 33 link to page 33 link to page 34 link to page 35
IR 8 OptiMOS™ IPOL 23 A single-voltage synchronous Buck regulator Table of contents Table of contents Features .. 1 Potential applications ... 1 Product validation .. 1 Description .. 1 Table of contents .. 2 1 Ordering information ... 4 2 Functional block diagram .. 5 3 Typical application diagram .. 6 4 Pin descriptions ... 7 5 Absolute maximum ratings ... 8 6 Electrical specifications .. 9 7 Electrical characteristics .. 10 8 Typical efficiency and power loss curves .. 13
8.1 PVin = Vin = 12 V, Fs = 600 kHz .. 13 8.2 PVin = Vin = 12 V, Fs = 1000 kHz .. 14 8.3 PVin = Vin = Vcc = 5 V, Fs = 600 kHz ... 15
9 Thermal Derating curves .. 16 10 RDS(ON) of MOSFET Over Temperature .. 17 11 Typical operating characteristics (-40 °C to +125 °C) .. 18 12 Theory of operation ... 20
12.1 Description .. 20 12.2 Voltage Loop Compensation design ... 20 12.3 Under-Voltage Lockout and POR .. 21 12.4 Enable .. 21 12.5 Pre-Bias startup ... 23 12.6 Soft-start .. 23 12.7 Operating frequency ... 24 12.8 Shutdown .. 25 12.9 Over Current Protection .. 25 12.10 Thermal shutdown .. 26 12.11 Feed-forward ... 26 12.12 Low Dropout Regulator (LDO) ... 27 12.13 Power Good Output .. 27 12.14 Over-Voltage Protection (OVP) ... 28 12.15 Minimum On-Time Considerations... 29 12.16 Maximum Duty Ratio ... 29
13 Design example ... 31
13.1 Enabling the IR3826 ... 31 13.2 Programming the Frequency .. 31 13.3 Output Voltage Programming... 32 13.4 Bootstrap Capacitor Selection .. 32 13.5 Input Capacitor Selection ... 33 13.6 Inductor Selection ... 33 13.7 Output Capacitor Selection .. 34 13.8 Feedback Compensation .. 35 Final Datasheet 2 of 53 V2.4 June 28 2019 Document Outline Revision History Trademarks Disclaimer
IR 8 OptiMOS™ IPOL 23 A single-voltage synchronous Buck regulator Table of contents Table of contents Features .. 1 Potential applications ... 1 Product validation .. 1 Description .. 1 Table of contents .. 2 1 Ordering information ... 4 2 Functional block diagram .. 5 3 Typical application diagram .. 6 4 Pin descriptions ... 7 5 Absolute maximum ratings ... 8 6 Electrical specifications .. 9 7 Electrical characteristics .. 10 8 Typical efficiency and power loss curves .. 13
8.1 PVin = Vin = 12 V, Fs = 600 kHz .. 13 8.2 PVin = Vin = 12 V, Fs = 1000 kHz .. 14 8.3 PVin = Vin = Vcc = 5 V, Fs = 600 kHz ... 15
9 Thermal Derating curves .. 16 10 RDS(ON) of MOSFET Over Temperature .. 17 11 Typical operating characteristics (-40 °C to +125 °C) .. 18 12 Theory of operation ... 20
12.1 Description .. 20 12.2 Voltage Loop Compensation design ... 20 12.3 Under-Voltage Lockout and POR .. 21 12.4 Enable .. 21 12.5 Pre-Bias startup ... 23 12.6 Soft-start .. 23 12.7 Operating frequency ... 24 12.8 Shutdown .. 25 12.9 Over Current Protection .. 25 12.10 Thermal shutdown .. 26 12.11 Feed-forward ... 26 12.12 Low Dropout Regulator (LDO) ... 27 12.13 Power Good Output .. 27 12.14 Over-Voltage Protection (OVP) ... 28 12.15 Minimum On-Time Considerations... 29 12.16 Maximum Duty Ratio ... 29
13 Design example ... 31
13.1 Enabling the IR3826 ... 31 13.2 Programming the Frequency .. 31 13.3 Output Voltage Programming... 32 13.4 Bootstrap Capacitor Selection .. 32 13.5 Input Capacitor Selection ... 33 13.6 Inductor Selection ... 33 13.7 Output Capacitor Selection .. 34 13.8 Feedback Compensation .. 35 Final Datasheet 2 of 53 V2.4 June 28 2019 Document Outline Revision History Trademarks Disclaimer