` SM7330B芯片80V240mA LED驱动电源方案一、方案基本电气参数 输入电压
| 90Vac~264Vac
| 输出规格
| 80V/240mA
| 恒流精度
| ≤±1.89%
| 转换效率
| >87%
| 功率因数
| >0.90
| 启动时间
| <376mS
| 拓扑结构
| BUCK
| 认证类型
| 非认证
|
二、方案实物图:
三、方案原理图: 四、方案BOM清单: 型号:SM7330B(80V, 240mA) 版本:V-1.0
| 日期: 140324
| NO.
| 元件类型
| 型号描述
| 用量
| 单位
| 位号
| 备注
| 1
| 输入保险
| FUS-RET-1.0A
| 1
| Pcs
| F1
|
| 2
| 压敏电阻
| VAR-Φ7-470V-Φ07D471K
| 1
| Pcs
| RV1
|
| 3
| X电容
| Xcap-0.1uF-X2
| 1
| Pcs
| CX1
|
| 4
| MOS管
| MOS-TO252-4A-650V—4N65
| 1
| Pcs
| Q1
|
| 5
| 贴片二极管
| DIO-FAS-SMA-2.00A-600V-ES2J
| 1
| Pcs
| D1
|
| 6
| 贴片二极管
| DIO-FAS-SMA-1.00A-1000V-RS1M
| 1
| Pcs
| D2
|
| 7
| 贴片二极管
| DIO-FAS-SMA-1.00A-1000V-M7
| 4
| Pcs
| D4~D7
|
| 8
| 贴片电阻
| RES-SMD-1206-510K-5%-0.25W
| 2
| Pcs
| R1、R2
|
| 9
| 贴片电阻
| RES-SMD-1206-2.2R-1%-0.25W
| 2
| Pcs
| R3A、R3B
|
| 10
| 贴片电阻
| RES-SMD-1206-1M-1%-0.25W
| 1
| Pcs
| R4
|
| 11
| 贴片电阻
| RES-SMD-0805-14K-5%-0.125W
| 1
| Pcs
| R5
|
| 12
| 贴片电阻
| RES-SMD-1206-15K-5%-0.25W
| 1
| Pcs
| R6A
|
| 13
| 贴片电阻
| RES-SMD-1206-68K-5%-0.25W
| 1
| Pcs
| R7
|
| 14
| 贴片电阻
| RES-SMD-0805-51K-5%-0.125W
| 1
| Pcs
| R8
|
| 15
| 贴片电阻
| RES-SMD-1206-0R
| 1
| Pcs
| R9
|
| 16
| 贴片电阻
| RES-SMD-1206-2M-5%-0.25W
| 1
| Pcs
| R10
|
| 17
| 插件CBB电容
| CAP-0.1uF-400V
| 1
| Pcs
| C1
|
| 18
| 贴片电容
| CAP-SMD-0805-X7R-10uF-10%-50V
| 1
| Pcs
| C2
|
| 19
| 贴片电容
| CAP-SMD-0805-X7R-100nF-10%-16V
| 2
| Pcs
| C3、C4
|
| 20
| 电解电容
| CAP-ELE-100uF-100V-***10*16
| 1
| Pcs
| E1
|
| 21
| 电感
| TR-EPC13(5+5) /0.8mH(180T***0.23)
| 1
| Pcs
| L1
|
| 22
| 芯片
| IC-SM7330B-SOT23-6
| 1
| Pcs
| U1
|
| 23
| NC
|
|
|
| D3、R3C、R6B
|
|
|
|
|
|
|
|
| 24
| 芯片
| IC-SM208N-TO252
| 1
| Pcs
| U2
|
| 25
| 电解电容
| CAP-ELE-100uF-100V-***10*16
| 1
| Pcs
| E2
|
| 26
| 电解电容
| CAP-ELE-100uF-10V-***5*11
| 1
| Pcs
| E3
|
| 27
| 贴片三极管
| S8550-SOT23
| 1
| Pcs
| Q2
|
| 28
| 贴片电阻
| RES-SMD-0805-300R-5%-0.125W
| 1
| Pcs
| R11
|
| 29
| 贴片电阻
| RES-SMD-0805-5.1K-5%-0.125W
| 1
| Pcs
| R12
|
| 30
| 贴片电阻
| RES-SMD-0805-10K-5%-0.125W
| 2
| Pcs
| R13、R14
|
| 31
| 贴片电阻
| RES-SMD-1206-2.2R-1%-0.25W
| 1
| Pcs
| R15
|
|
五、方案变压器参数
`
1
|
|
|
|