SD6953B datasheet by Silan Microelectronics.
This datasheet includes multiple variants, all published together in a single manufacturer document.
| Part number | SD6953B |
|---|---|
| Datasheet | SD6953B SD6953 Datasheet (PDF) |
| File Size | 298.40 KB |
| Manufacturer | Silan Microelectronics |
| Description | Driving high voltage primary side control transistor switching power supply controller |
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电路启动和欠压锁定 系统上电，电路由高压直流母线通过启动电阻对 VCC 管脚外置的电容充电。当 VCC 上升到 14.5V，电 路开始工作；在电路正常工作过程中，由启动电阻和辅助线圈共同供电来维持 VCC 电压；当 VCC 下降到 6.0V 进入欠压锁定状态，启动电阻对 VCC 电容供电，VCC 上升到 14.5V，电路启动重新工作。 2. 峰值电流检测 当驱动高电平提供基极驱动电流，三极管导通，通过采样电阻检测呈线性增大的原级线圈的电流，当达 到设定的电流限制值即峰值电流，三极管关断。 在三极管导通时会产生一个瞬间的毛刺，如果该毛刺的幅度超过峰值电流阈值 VPK，即会导致驱动关 断。因此设置前沿消隐时间 TLEB＝0.6µs，消除由该毛刺带来的可能的误触发。 根据.
View all Silan Microelectronics datasheets
| Part Number | Description |
|---|---|
| SD6953 | Driving high voltage primary side control transistor switching power supply controller |
| SD6953A | Driving high voltage primary side control transistor switching power supply controller |
| SD6953C | Driving high voltage primary side control transistor switching power supply controller |
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| SD6900TR | NON-ISOLATED LED LIGHTING DRIVE IC |
| SD6901S | NON-ISOLATED LED LIGHTING DRIVE IC |
| SD6901STR | NON-ISOLATED LED LIGHTING DRIVE IC |
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