Datasheet IR3889 IR OptiMOS IPOL (Infineon) - 2
| 制造商 | Infineon |
| 描述 | A single-voltage synchronous Buck regulator |
| 页数 / 页 | 50 / 2 — OptiMOS™ IPOL. 30 A single-voltage synchronous Buck regulator. Table of … |
| 修订版 | 02_04 |
| 文件格式/大小 | PDF / 2.9 Mb |
| 文件语言 | 英语 |
OptiMOS™ IPOL. 30 A single-voltage synchronous Buck regulator. Table of contents. Table of contents Features .. 1
该数据表的模型线
文件文字版本
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 9 link to page 10 link to page 10 link to page 11 link to page 11 link to page 12 link to page 15 link to page 15 link to page 16 link to page 17 link to page 18 link to page 19 link to page 20 link to page 21 link to page 24 link to page 24 link to page 24 link to page 25 link to page 25 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 30 link to page 30 link to page 31 link to page 31 link to page 32 link to page 33 link to page 33 link to page 33 link to page 33 link to page 34
IR OptiMOS™ IPOL 30 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 ... 9 6 Thermal Characteristics ... 10
6.1 Thermal Characteristics .. 10
7 Electrical specifications ... 11
7.1 Recommended operating conditions ... 11 7.2 Electrical characteristics ... 12
8 Typical efficiency and power loss curves .. 15
8.1 PVin = Vin = 12 V, fsw = 600 kHz ... 15 8.2 PVin = Vin = 12 V, fsw = 800 kHz ... 16 8.3 PVin = Vin = 12 V, fsw = 1000 kHz ... 17 8.4 PVin = Vin = VCC = 5 V, fsw = 600 kHz ... 18
9 Thermal De-rating curves ... 19 10 RDS(ON) of MOSFET Over Temperature .. 20 11 Typical operating characteristics (-40 °C ≤ Tj ≤ +125 °C) .. 21 12 Theory of operation ... 24
12.1 Fast Constant On-Time Control .. 24 12.2 Enable .. 24 12.3 FCCM and DEM Operation ... 25 12.4 Pseudo Constant Switching Frequency .. 25 12.5 Soft-start .. 26 12.6 Pre-bias Start-up ... 27 12.7 Internal Low - Dropout (LDO) Regulator ... 27 12.8 Over Current Protection (OCP) ... 28 12.9 Under Voltage Protection (UVP) ... 29 12.10 Over Voltage Protection (OVP) .. 29 12.11 Over Temperature Protection (OTP) .. 30 12.12 Power Good (PGood) Output .. 30 12.13 Minimum On - Time and Minimum Off - Time .. 31 12.14 Selection of Feedforward Capacitor and Feedback Resistors ... 31 12.15 Resistors for Configuration Pins ... 32
13 Design example ... 33
13.1 Enabling the IR3889 ... 33 13.2 Programming the Switching Frequency and Operation Mode .. 33 13.3 Selecting Input Capacitors .. 33 13.4 Inductor Selection ... 34 Final Datasheet 2 of 50 V2.4 2020-1-16 Document Outline Revision History Trademarks Disclaimer
IR OptiMOS™ IPOL 30 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 ... 9 6 Thermal Characteristics ... 10
6.1 Thermal Characteristics .. 10
7 Electrical specifications ... 11
7.1 Recommended operating conditions ... 11 7.2 Electrical characteristics ... 12
8 Typical efficiency and power loss curves .. 15
8.1 PVin = Vin = 12 V, fsw = 600 kHz ... 15 8.2 PVin = Vin = 12 V, fsw = 800 kHz ... 16 8.3 PVin = Vin = 12 V, fsw = 1000 kHz ... 17 8.4 PVin = Vin = VCC = 5 V, fsw = 600 kHz ... 18
9 Thermal De-rating curves ... 19 10 RDS(ON) of MOSFET Over Temperature .. 20 11 Typical operating characteristics (-40 °C ≤ Tj ≤ +125 °C) .. 21 12 Theory of operation ... 24
12.1 Fast Constant On-Time Control .. 24 12.2 Enable .. 24 12.3 FCCM and DEM Operation ... 25 12.4 Pseudo Constant Switching Frequency .. 25 12.5 Soft-start .. 26 12.6 Pre-bias Start-up ... 27 12.7 Internal Low - Dropout (LDO) Regulator ... 27 12.8 Over Current Protection (OCP) ... 28 12.9 Under Voltage Protection (UVP) ... 29 12.10 Over Voltage Protection (OVP) .. 29 12.11 Over Temperature Protection (OTP) .. 30 12.12 Power Good (PGood) Output .. 30 12.13 Minimum On - Time and Minimum Off - Time .. 31 12.14 Selection of Feedforward Capacitor and Feedback Resistors ... 31 12.15 Resistors for Configuration Pins ... 32
13 Design example ... 33
13.1 Enabling the IR3889 ... 33 13.2 Programming the Switching Frequency and Operation Mode .. 33 13.3 Selecting Input Capacitors .. 33 13.4 Inductor Selection ... 34 Final Datasheet 2 of 50 V2.4 2020-1-16 Document Outline Revision History Trademarks Disclaimer