基于TMS320F28335的开关电源模块并联供电系统WORD论文文档+ALTIUM设计原理图PCB+软件源码文件. 摘要 本系统以DSPMS320C28335作为主控，以单端反激式电路作为核心，根据AD采集两路DC模块输出电路分别控制两路PWM，做出相应调整，从而实现在4.0A以内，A、B两路DC模块电流比例在0.5~2.0之间步进为0.1的比例可调。测试表明，本系统达到了题目的基本要求和扩展要求的全部功能 系统方案 本系统主要由DC-DC主回路模块、信号采样模块、主控模块、电源模块组成，下面分别论证这几个模块的选择。 1.1 DC-DC主回路的论证与选择 方案一：采用推挽拓扑。 推挽拓扑因其变压器工作在双端磁化情况下而适合应用在低压大电流的场合。但是，推挽电路中的高频变压器如果在绕制中两臂不对称，就会使变压器因磁通不平衡而饱和，从何导致开关管烧毁；同时，由于电路中需要两个开关管，系统损耗将会很大。 方案二：采用Boost升压拓扑。 Boost电路结构简单、元件少，因此损耗较少，电路转换效率高。但是，Boost电路只能实现升压而不能降压，而且输入/输出不隔离。 方案三：采用单端反激拓扑。 单端反激电路结构简单，适合应用在大电压小功率的场合。由于不需要储能电感，输出电阻大等原因，电路并联使用时均流性较好。 方案论证：上述方案中，方案一系统损耗大，方案二不能实现输入输出隔离，而方案三虽然对高频变压器设计要求较高，但系统要求两个DCDC模块并联，并且对效率有一定要求。因此，选择单端反激电路作为本系统的主回路拓扑。 1.2 控制方法及实现方案 方案一：采用专用的开关电源芯片及并联开关电源均流芯片。这种方案的优点是技艺成熟，且均流的精度高，实现成本较低。但这种方案的缺点是控制系统的性能取决于外围电路元件参数的选择，如果参数选择不当，则输出电压难以维持稳定。 方案二：采用TI公司的DSP TMS320C28335作为主控，实现PWM输出，并控制A/D对输入输出的电压电流信号进行采样，从而进行可靠的闭环控制。与模拟控制方法相比，数字控制方法灵活性高、可靠性好、抗干扰能力强。但DSP成本不低，而且功耗较大，对系统的效率有一定影响。 方案论证：上述方案中，考虑到题目要求的电流比例可调的指标，方案一较难实现，并且方案二开发简单，可以缩短开发周期。所以，选择方案二来实现本系统要求。

FTDI FT 全系列FT2232 FT245RQ FT4232H等原理图库+PCB封装库（AD集成库）.IntLib后缀文件，拆分后文件为PcbLib+SchLib格式，Altium Designer原理图库+PCB封装库，集成库型号列表如下： Library Component Count : 36 Name Description ---------------------------------------------------------------------------------------------------- FT2232D FT2232D Dual USB to Serial UART/FIFO IC, -40 to +85 degC, 48-pin LQFP FT2232D-REEL FT2232D Dual USB to Serial UART/FIFO IC, -40 to +85 degC, 48-Pin LQFP, Pb-Free, Tape and Reel FT2232D-TRAY FT2232D Dual USB to Serial UART/FIFO IC, -40 to +85 degC, 48-Pin LQFP, Pb-Free, Tray FT2232HL-Reel Dual High Speed USB To Multipurpose UART/FIFO IC, 64-pin LQFP, Tape and Reel FT2232HL-Tray Dual High Speed USB To Multipurpose UART/FIFO IC, 64-pin LQFP, Tray FT2232HQ-Reel Dual High Speed USB To Multipurpose UART/FIFO IC, 64-pin QFN, Tape and Reel FT2232HQ-Tray Dual High Speed USB To Multipurpose UART/FIFO IC, 64-pin QFN, Tray FT232BL USB UART Asynchronous Serial Data Transfer Chip, 0 to +70 degC, 32-pin LQFP, Pb-Free FT232BL-REEL USB UART Asynchronous Serial Data Transfer Chip, 0 to +70 degC, 32-Pin LQFP, Pb-Free, Tape and Reel FT232BL-TRAY USB UART Asynchronous Serial Data Transfer Chip, 0 to +70 degC, 32-Pin LQFP, Pb-Free, Tray FT232BQ USB UART Asynchronous Serial Data Transfer Chip, 0 to +70 degC, 32-pin QFN, Pb-Free FT232BQ-REEL USB UART Asynchronous Serial Data Transfer Chip, 0 to +70 degC, 32-Pin QFN, Pb-Free, Tape and Reel FT232HL-Reel Single Channel Hi-Speed USB to Multipurpose UART/FIFO IC, 48-pin LQFP, Tape and Reel FT232HL-Tray Single Channel Hi-Speed USB to Multipurpose UART/FIFO IC, 48-pin LQFP, Tray FT232HQ-Reel Single Channel Hi-Speed USB to Multipurpose UART/FIFO IC, 48-pin QFN, Tape and Reel FT232HQ-Tray Single Channel Hi-Speed USB to Multipurpose UART/FIFO IC, 48-pin QFN, Tray FT232RL-Reel USB UART Asynchronous Serial Data Transfer Chip, 28-pin

FTDI FT-X Series FT200XD FT231 FT240等全系列原理图库+PCB封装库（AD集成库）.IntLib后缀文件，拆分后文件为PcbLib+SchLib格式，Altium Designer原理图库+PCB封装库，集成库型号列表如下：Library Component Count : 28 Name Description ---------------------------------------------------------------------------------------------------- FT200XD-R USB to I2C Interface Slave Chip, UHCI/OHCI/EHCI Compatible, USB 2.0 Compatible, -40 to +85 degC, 10-Pin DFN, Pb-Free, Tape and Reel FT200XD-T USB to I2C Interface Slave Chip, UHCI/OHCI/EHCI Compatible, USB 2.0 Compatible, -40 to +85 degC, 10-Pin DFN, Pb-Free, Tray FT201XQ-R USB to I2C Interface Slave Chip, UHCI/OHCI/EHCI Compatible, USB 2.0 Compatible, -40 to +85 degC, 16-Pin QFN, Pb-Free, Tape and Reel FT201XQ-T USB to I2C Interface Slave Chip, UHCI/OHCI/EHCI Compatible, USB 2.0 Compatible, -40 to +85 degC, 16-Pin QFN, Pb-Free, Tray FT201XS-R USB to I2C Interface Slave Chip, UHCI/OHCI/EHCI Compatible, USB 2.0 Compatible, -40 to +85 degC, 16-Pin SSOP, Pb-Free, Tape and Reel FT201XS-U USB to I2C Interface Slave Chip, UHCI/OHCI/EHCI Compatible, USB 2.0 Compatible, -40 to +85 degC, 16-Pin SSOP, Pb-Free, Tube FT220XQ-R USB 4-Bit SPI/FT1248 Interface Chip, UHCI/OHCI/EHCI Compatible, USB 2.0 Compatible, -40 to +85 degC, 16-Pin QFN, Pb-Free, Tape and Reel FT220XQ-T USB 4-Bit SPI/FT1248 Interface Chip, UHCI/OHCI/EHCI Compatible, USB 2.0 Compatible, -40 to +85 degC, 16-Pin QFN, Pb-Free, Tray FT220XS-R USB 4-Bit SPI/FT1248 Interface Chip, UHCI/OHCI/EHCI Compatible, USB 2.0 Compatible, -40 to +85 degC, 16-Pin SSOP, Pb-Free, Tape and Reel FT220XS-U USB 4-Bit SPI/FT1248 Interface Chip, UHCI/OHCI/EHCI Compatible, USB 2.0 Compatible, -40 to +85 degC, 16-Pin SSOP, Pb-Free, Tube FT221XQ-R USB 8-Bit SPI/FT1248 Interface Chip, UHCI/OHCI/EHCI Compatible, USB 2.0 Compatible, -40 to +85 degC, 20-Pin QFN, Pb-Free, Tape and Reel FT221XQ-T USB 8-Bit SPI/FT1248 Interface Chip,

Infineon MCU 32-bit TriCore AURIX 全系列原理图库+PCB封装库（AD集成库）.IntLib后缀文件，拆分后文件为PcbLib+SchLib格式，Altium Designer原理图库+PCB封装库，集成库型号列表如下：ibrary Component Count : 81 Name Description ---------------------------------------------------------------------------------------------------- SAK-TC222L-12F133F AB32-bit multi-core TriCore AURIX microcontroller with 64 KB SRAM, 0.75 MB Flash, 133 MHz Frequency, -40 to 125 degC, PG-TQFP-80 SAK-TC222L-16F133F AB32-bit multi-core TriCore AURIX microcontroller with 96 KB SRAM, 1 MB Flash, 133 MHz Frequency, -40 to 125 degC, PG-TQFP-80 SAK-TC222S-12F133F AB32-bit multi-core TriCore AURIX microcontroller with 64 KB SRAM, 0.75 MB Flash, 133 MHz Frequency, -40 to 125 degC, PG-TQFP-80 SAK-TC222S-16F133F AB32-bit multi-core TriCore AURIX microcontroller with 96 KB SRAM, 1 MB Flash, 133 MHz Frequency, -40 to 125 degC, PG-TQFP-80 SAK-TC223L-12F133F AB32-bit multi-core TriCore AURIX microcontroller with 64 KB SRAM, 0.75 MB Flash, 133 MHz Frequency, -40 to 125 degC, PG-TQFP-100 SAK-TC223L-16F133F AB32-bit multi-core TriCore AURIX microcontroller with 96 KB SRAM, 1 MB Flash, 133 MHz Frequency, -40 to 125 degC, PG-TQFP-100 SAK-TC223S-12F133F AB32-bit multi-core TriCore AURIX microcontroller with 64 KB SRAM, 0.75 MB Flash, 133 MHz Frequency, -40 to 125 degC, PG-TQFP-100 SAK-TC223S-16F133F AB32-bit multi-core TriCore AURIX microcontroller with 96 KB SRAM, 1 MB Flash, 133 MHz Frequency, -40 to 125 degC, PG-TQFP-100 SAK-TC224L-16F133F AB32-bit multi-core TriCore AURIX microcontroller with 96 KB SRAM, 1 MB Flash, 133 MHz Frequency, -40 to 125 degC, PG-TQFP-144 SAK-TC224S-16F133F AB32-bit multi-core TriCore AURIX microcontroller with 96 KB SRAM, 1 MB Flash, 133 MHz Frequency, -40 to 125 degC, PG-TQFP-144 SAK-TC233L-16F200F AB32-bit multi-core TriCore AURIX microcontroller with 96 KB SRAM, 1 MB Flash, 200 MHz Frequency, -40 to 125 degC, PG-TQFP-100 SAK-TC233L-32F200F AB32-bit multi-core TriCore AURIX microcontroller with 192 KB SRAM, 2 MB Flash

Linear Regulator LT1074~LT8705 全系列原理图库+PCB封装库 2252个（AD集成库）.IntLib后缀文件，拆分后文件为PcbLib+SchLib格式，Altium Designer原理图库+PCB封装库，集成库型号列表如下： Library Component Count : 2252 Name Description ---------------------------------------------------------------------------------------------------- LT1074CT Step-Down Switching Regulator, 5-pin FM (T-5), 0 to 70 degC LT1074CT#06PBF Step-Down Switching Regulator, 5-pin FM (T-5), 0 to 70 degC, Pb-Free LT1074CT#30PBF Step-Down Switching Regulator, 5-pin FM (T-5), 0 to 70 degC, Pb-Free LT1074CT#PBF Step-Down Switching Regulator, 5-pin FM (T-5), 0 to 70 degC, Pb-Free LT1074CT7 Step-Down Switching Regulator, 7-pin FM (T7-7), 0 to 70 degC LT1074CT7#06PBF Step-Down Switching Regulator, 7-pin FM (T7-7), 0 to 70 degC, Pb-Free LT1074CT7#PBF Step-Down Switching Regulator, 7-pin FM (T7-7), 0 to 70 degC, Pb-Free LT1074HVCT Step-Down Switching Regulator, 5-pin FM (T-5), 0 to 70 degC LT1074HVCT#06PBF Step-Down Switching Regulator, 5-pin FM (T-5), 0 to 70 degC, Pb-Free LT1074HVCT#PBF Step-Down Switching Regulator, 5-pin FM (T-5), 0 to 70 degC, Pb-Free LT1074HVCT7 Step-Down Switching Regulator, 7-pin FM (T7-7), 0 to 70 degC LT1074HVCT7#06PBF Step-Down Switching Regulator, 7-pin FM (T7-7), 0 to 70 degC, Pb-Free LT1074HVCT7#PBF Step-Down Switching Regulator, 7-pin FM (T7-7), 0 to 70 degC, Pb-Free LT1074HVIT Step-Down Switching Regulator, 5-pin FM (T-5), -40 to 85 degC LT1074HVIT#06PBF Step-Down Switching Regulator, 5-pin FM (T-5), -40 to 85 degC, Pb-Free LT1074HVIT#30PBF Step-Down Switching Regulator, 5-pin FM (T-5), -40 to 85 degC, Pb-Free LT1074HVIT#PBF Step-Down Switching Regulator, 5-pin FM (T-5), -40 to 85 degC, Pb-Free LT1074HVIT7 Step-Down Switching Regulator, 7-pin FM (T7-7), -40 to 85 degC LT1074HVIT7#35PBF Step-Down Switching Regulator, 7-pin FM (T7-7), -40 to 85 degC, Pb-Free LT1074HVIT7#PBF Step-Down Switching Regulat

Linear Regulator LTC1174~LTC3901 全系列原理图库+PCB封装库2647个（AD集成库）.IntLib后缀文件，拆分后文件为PcbLib+SchLib格式，Altium Designer原理图库+PCB封装库，集成库型号列表如下： Library Component Count : 2647 Name Description ---------------------------------------------------------------------------------------------------- LTC1174CN8 High Efficiency Step-Down and Inverting DC/DC Converter, 8-pin DIP (N8-8), 0 to 70 degC LTC1174CN8#PBF High Efficiency Step-Down and Inverting DC/DC Converter, 8-pin DIP (N8-8), 0 to 70 degC, Pb-Free LTC1174CN8-3.3 High Efficiency Step-Down and Inverting DC/DC Converter, 8-pin DIP (N8-8), 0 to 70 degC LTC1174CN8-3.3#PBF High Efficiency Step-Down and Inverting DC/DC Converter, 8-pin DIP (N8-8), 0 to 70 degC, Pb-Free LTC1174CN8-5 High Efficiency Step-Down and Inverting DC/DC Converter, 8-pin DIP (N8-8), 0 to 70 degC LTC1174CN8-5#PBF High Efficiency Step-Down and Inverting DC/DC Converter, 8-pin DIP (N8-8), 0 to 70 degC, Pb-Free LTC1174CS8 High Efficiency Step-Down and Inverting DC/DC Converter, 8-pin SOIC (S8-8), 0 to 70 degC LTC1174CS8#PBF High Efficiency Step-Down and Inverting DC/DC Converter, 8-pin SOIC (S8-8), 0 to 70 degC, Pb-Free LTC1174CS8#TR High Efficiency Step-Down and Inverting DC/DC Converter, 8-pin SOIC (S8-8), 0 to 70 degC, Tape and Reel LTC1174CS8#TRPBF High Efficiency Step-Down and Inverting DC/DC Converter, 8-pin SOIC (S8-8), 0 to 70 degC, Pb-Free, Tape and Reel LTC1174CS8-3.3 High Efficiency Step-Down and Inverting DC/DC Converter, 8-pin SOIC (S8-8), 0 to 70 degC LTC1174CS8-3.3#PBF High Efficiency Step-Down and Inverting DC/DC Converter, 8-pin SOIC (S8-8), 0 to 70 degC, Pb-Free LTC1174CS8-3.3#TR High Efficiency Step-Down and Inverting DC/DC Converter, 8-pin SOIC (S8-8), 0 to 70 degC, Tape and Reel LTC1174CS8-3.3#TRPBFHigh Efficiency Step-Down and Inverting DC/DC Converter, 8-pin SOIC (S8-8), 0 to 70 degC, Pb-Free, Tape and Reel LTC1174CS8-5 High Efficiency Step-Down and Inverting

Linear LDO Linear Regulators 芯片 全系列原理图库+PCB封装库 2252个（AD集成库）.IntLib后缀文件，拆分后文件为PcbLib+SchLib格式，Altium Designer原理图库+PCB封装库，集成库型号列表如下： Library Component Count : 2339 Name Description ---------------------------------------------------------------------------------------------------- LT1083CP#PBF 7.5 A Low Dropout Positive Regulator, 2.55 to 30 V Vin, Adjustable Vout, 3-pin FM (P-3), 0 to 150 degC, Pb-Free LT1083CP-12#PBF 7.5 A Low Dropout Positive Regulator, 6 to 25 V Vin, 12 V Vout, 3-pin FM (P-3), 0 to 150 degC, Pb-Free LT1083CP-5#PBF 7.5 A Low Dropout Positive Regulator, 6 to 25 V Vin, 5 V Vout, 3-pin FM (P-3), 0 to 150 degC, Pb-Free LT1084CP#PBF 5 A Low Dropout Positive Regulator, 2.55 to 30 V Vin, Adjustable Vout, 3-pin FM (P-3), 0 to 150 degC, Pb-Free LT1084CP-12#PBF 5 A Low Dropout Positive Regulator, 2.55 to 30 V Vin, 12 V Vout, 3-pin FM (P-3), 0 to 150 degC, Pb-Free LT1084CP-5#PBF 5 A Low Dropout Positive Regulator, 2.55 to 30 V Vin, 5 V Vout, 3-pin FM (P-3), 0 to 125 degC, Pb-Free LT1084CT 5 A Low Dropout Positive Regulator, 2.55 to 30 V Vin, Adjustable Vout, 3-pin FM (T-3), 0 to 150 degC LT1084CT#PBF 5 A Low Dropout Positive Regulator, 2.55 to 30 V Vin, Adjustable Vout, 3-pin FM (T-3), 0 to 150 degC, Pb-Free LT1084CT-12 5 A Low Dropout Positive Regulator, 2.55 to 30 V Vin, 12 V Vout, 3-pin FM (T-3), 0 to 150 degC LT1084CT-12#PBF 5 A Low Dropout Positive Regulator, 2.55 to 30 V Vin, 12 V Vout, 3-pin FM (T-3), 0 to 150 degC, Pb-Free LT1084CT-3.3 5 A Low Dropout Positive Regulator, 2.55 to 30 V Vin, 3.3 V Vout, 3-pin FM (T-3), 0 to 150 degC LT1084CT-3.3#PBF 5 A Low Dropout Positive Regulator, 2.55 to 30 V Vin, 3.3 V Vout, 3-pin FM (T-3), 0 to 150 degC, Pb-Free LT1084CT-5 5 A Low Dropout Positive Regulator, 2.55 to 30 V Vin, 5 V Vout, 3-pin FM (T-3), 0 to 150 degC LT1084CT-5#PBF 5 A Low Dropout Positive Regulator, 2.55 to 30 V Vin, 5 V Vout, 3-pin FM (T-3), 0 to

Linear LED Driver ICs 全系列原理图库+PCB封装库 490个（AD集成库）.IntLib后缀文件，拆分后文件为PcbLib+SchLib格式，Altium Designer原理图库+PCB封装库，集成库型号列表如下： Name Description ---------------------------------------------------------------------------------------------------- LT1618EDD Constant Current / Voltage 1.4 MHz Step-Up DC/DC Converter, 1.6 to 18 V Vin, 35 V Vout MAX, 10-pin SON (DD-10), -40 to 85 degC LT1618EDD#PBF Constant Current / Voltage 1.4 MHz Step-Up DC/DC Converter, 1.6 to 18 V Vin, 35 V Vout MAX, 10-pin SON (DD-10), -40 to 85 degC, Pb-Free LT1618EDD#TR Constant Current / Voltage 1.4 MHz Step-Up DC/DC Converter, 1.6 to 18 V Vin, 35 V Vout MAX, 10-pin SON (DD-10), -40 to 85 degC, Tape and Reel LT1618EDD#TRPBF Constant Current / Voltage 1.4 MHz Step-Up DC/DC Converter, 1.6 to 18 V Vin, 35 V Vout MAX, 10-pin SON (DD-10), -40 to 85 degC, Pb-Free, Tape and Reel LT1618EMS Constant Current / Voltage 1.4 MHz Step-Up DC/DC Converter, 1.6 to 18 V Vin, 35 V Vout MAX, 10-pin SOP (MS-10), -40 to 85 degC LT1618EMS#PBF Constant Current / Voltage 1.4 MHz Step-Up DC/DC Converter, 1.6 to 18 V Vin, 35 V Vout MAX, 10-pin SOP (MS-10), -40 to 85 degC, Pb-Free LT1618EMS#TR Constant Current / Voltage 1.4 MHz Step-Up DC/DC Converter, 1.6 to 18 V Vin, 35 V Vout MAX, 10-pin SOP (MS-10), -40 to 85 degC, Tape and Reel LT1618EMS#TRPBF Constant Current / Voltage 1.4 MHz Step-Up DC/DC Converter, 1.6 to 18 V Vin, 35 V Vout MAX, 10-pin SOP (MS-10), -40 to 85 degC, Pb-Free, Tape and Reel LT1937ES5 84%, Constant-Current / Voltage Ideal for Driving 4 White LEDs, 2.5 to 10 V Vin, 36 V Vout MAX, 5-pin SOT23 (S5-5), -40 to 85 degC LT1937ES5#PBF 84%, Constant-Current / Voltage Ideal for Driving 4 White LEDs, 2.5 to 10 V Vin, 36 V Vout MAX, 5-pin SOT23 (S5-5), -40 to 85 degC, Pb-Free LT1937ES5#TR 84%, Constant-Current / Voltage Ideal for Driving 4 White LEDs, 2.5 to 10 V Vin, 36 V Vout MAX, 5-pin SOT23 (S5-5), -40 to 85 degC, Tape and R

Linear PMIC Multifunction 芯片 全系列原理图库+PCB封装库 360个（AD集成库），.IntLib后缀文件，拆分后文件为PcbLib+SchLib格式，Altium Designer原理图库+PCB封装库，集成库型号列表如下： Library Component Count : 360 Name Description ---------------------------------------------------------------------------------------------------- LT1939EDD#PBF Monolithic 2 A Step-Down Regulator Plus Linear Regulator / Controller, 3 to 25 V Vin, 12-pin SON (DD-12), -40 to 125 degC, Pb-Free LT1939EDD#TRPBF Monolithic 2 A Step-Down Regulator Plus Linear Regulator / Controller, 3 to 25 V Vin, 12-pin SON (DD-12), -40 to 125 degC, Pb-Free, Tape and Reel LT1939IDD#PBF Monolithic 2 A Step-Down Regulator Plus Linear Regulator / Controller, 3 to 25 V Vin, 12-pin SON (DD-12), -40 to 125 degC, Pb-Free LT1939IDD#TRPBF Monolithic 2 A Step-Down Regulator Plus Linear Regulator / Controller, 3 to 25 V Vin, 12-pin SON (DD-12), -40 to 125 degC, Pb-Free, Tape and Reel LT1941EFE Triple Monolithic Switching Regulator: 3 A Step Down, 2 A Step Down, 1.5 A Inverting / Boost, 3.5 to 25 V Vin, 28-pin SOP (FE-28-EPV-EB), -40 to 85 degC LT1941EFE#PBF Triple Monolithic Switching Regulator: 3 A Step Down, 2 A Step Down, 1.5 A Inverting / Boost, 3.5 to 25 V Vin, 28-pin SOP (FE-28-EPV-EB), -40 to 85 degC, Pb-Free LT1941EFE#TR Triple Monolithic Switching Regulator: 3 A Step Down, 2 A Step Down, 1.5 A Inverting / Boost, 3.5 to 25 V Vin, 28-pin SOP (FE-28-EPV-EB), -40 to 85 degC, Tape and Reel LT1941EFE#TRPBF Triple Monolithic Switching Regulator: 3 A Step Down, 2 A Step Down, 1.5 A Inverting / Boost, 3.5 to 25 V Vin, 28-pin SOP (FE-28-EPV-EB), -40 to 85 degC, Pb-Free, Tape and Reel LT1943EFE High Current Quad Output Regulator for TFT LCD Display, 4.5 to 22 V Vin, 28-pin SOP (FE-28-EPV-EB), -40 to 85 degC LT1943EFE#PBF High Current Quad Output Regulator for TFT LCD Display, 4.5 to 22 V Vin, 28-pin SOP (FE-28-EPV-EB), -40 to 85 degC, Pb-Free LT1943EFE#TR High Current Quad Output Regulato

STM DC-DC Conversion 芯片全系列原理图库+PCB封装库（AD集成库）.IntLib后缀文件，拆分后文件为PcbLib+SchLib格式，Altium Designer原理图库+PCB封装库，集成库型号列表如下： Library Component Count : 186 Name Description ---------------------------------------------------------------------------------------------------- L296 High-Current Switching Regulator, 15-Pin Multiwatt Vertical L296HT High-Current Switching Regulator, 15-Pin Multiwatt Horizontal L296P High-Current Switching Regulator, 15-Pin Multiwatt Vertical L4960 2.5A Power Switching Regulator, 7-Pin Heptawatt Vertical L4960H 2.5A Power Switching Regulator, 7-Pin Heptawatt Horizontal L4962/A 1.5A Power Switching Regulator, 16-Pin powerdip L4962E/A 1.5A Power Switching Regulator, 7-Pin Heptawatt Vertical L4962EH/A 1.5A Power Switching Regulator, 7-Pin Heptawatt Horizontal L4963D 1.5A Switching Regulator, 20-Pin SO L4963D013TR 1.5A Switching Regulator, 20-Pin SO, Tape and Reel L4963W 1.5A Switching Regulator, 18-Pin Power DIP L4964 High-Current Switching Regulator, 15-Pin Multiwatt Vertical L4964HT High-Current Switching Regulator, 15-Pin Multiwatt Horizontal (Short leads) L4970A 10A Switching Regulator, 15-Pin Multiwatt Vertical L4971 1.5A, Step-down switching regulator, 8-Pin DIP L4971D 1.5A, Step-down switching regulator, 16-Pin SO L4971D013TR 1.5A, Step-down switching regulator, 16-Pin SO, Tape and Reel L4972A 2A Switching Regulator, 20-Pin Power DIP L4972AD 2A Switching Regulator, 20-Pin SO L4972AD013TR 2A Switching Regulator, 20-Pin SO, Tape and Reel L4973D3.3 3.5A Step Down Switching Regulator, 20-Pin SO L4973D3.3-013TR 3.5A Step Down Switching Regulator, 20-Pin SO, Tape and Reel L4973D5.1 3.5A Step Down Switching Regulator, 20-Pin SO L4973D5.1-013TR 3.5A Step Down Switching Re