SD6832 Datasheet – Current Mode PWM+PFM Controller
Current Mode PWM+PFM Controller With Built-in High-voltage MOSFET
SD6832 overview
The SD6832 is a Current Mode PWM+PFM Controller With Built-in High-voltage MOSFET made by Silan Microelectronics, supplied in a DIP 8 Pin Type package. The absolute maximum ratings table on this page lists the 11 limits from the manufacturer's datasheet that must not be exceeded. This page brings together the SD6832 pinout and maximum ratings, with the full datasheet PDF to preview below or download.
SD6832 is current mode PWM+PFM controller with built-in high- voltage MOSFET used for SMPS. It features low standby power and low start current. In standby mode, the circuit enters burst mode to reduce the standby power dissipation. The switch frequency is 25~67KHz decided by the load with jitter frequency for low EMI.
Built-in peak current compensation circuit makes the limit peak current stable even with different input AC voltage. Maximum peak current compensation during power-on reduces pressure on transformer to avoid saturation, the peak current compensation will decrease for balance after power-on. Limit output current can be adjusted through the resistor connected to CS. It integrates various protections such as undervoltage lockout, overvoltage protection, overload protection, leading edge blanking, primary winding overcurrent protection and thermal shutdown. The circuit will restart until normal if protection occurs.
Datasheet
SD6832 features
- Energy Star 2.0 standard
- Lower start-up current (3mA)
- Various switching frequency following load for the high efficiency
- Frequency jitter for low EMI
- Overvoltage, primary winding overcurrent, overload and over temperature protections.
- External peak current sense resistor
- Undervoltage lockout
- Built-in high voltage MOSFET
- Auto restart mode
- Peak current compensation
- Maximum peak current compensation for initialization to realize the soft start function.
- Burst mode
- Cycle by cycle current limit
SD6832 pinout
| Pin | Name | Description |
|---|---|---|
| 1 | GND | Ground |
| 2 | CS | Peak current sense pin |
| 3 | VCC | Power supply pin |
| 4 | FB | Feedback input pin |
| 5 | NC | NC |
| 6, 7, 8 | Drain | Drain pins. |
Absolute maximum ratings
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Drain-Gate Voltage (RGS=1MW) | VDGR | 650 | V |
| Gate-Source (GND) Voltage | VGS | ±30 | V |
| Drain Current Pulse note1 | IDM | 6 | A |
| Continuous Drain Current (Tamb=25°C) | ID | 1 | A |
| Signal Pulse Avalanche Energynote2 | EAS | 30 | mJ |
| Power Supply Voltage | VCC,MAX | 28 | V |
| Feedback input voltage | VFB | -0.3~7 | V |
| Peak current sense voltage | VCS | -0.3~2 | V |
| Allowable Power Dissipation | PD | 6.3 | W |
| Ambient thermal resistance | θja | 77 | C/W |
| Surface thermal resistance | θjc | 20 | C/W |
SD6832 applications
- LED Driver Circuits
- Lighting Systems
- Display Backlighting
- Automotive Lighting
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