Non-isolated Type PWM DC/DC Converter IC with Built-in Switching MOSFET
The PWM type DC/DC converter for AC/DC provides an optimum system for all products that include an electrical outlet. It enables simpler design of a high effective converter specializing in non-isolation. By a built-in startup circuit that tolerates 650V, this IC contributes to low power consumption. A current detection resistor as internal device realizes the small power supply designs. Since a current mode control is utilized, the current can be restricted in each cycle and an excellent performance is demonstrated in the bandwidth and transient response. The switching frequency is fixed to 65kHz. A frequency hopping function is also on chip, and it contributes to low EMI. In addition, a built-in super junction MOSFET which tolerates 650V makes the design easy.
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- PWM Current Mode Method
- Frequency Hopping Function
- Burst Operation at Light Load
- Built-in 650V Startup Circuit
- Built-in 650V Super Junction MOSFET
- VCC UVLO (Under Voltage Lockout)
- VCC OVP (Over Voltage Protection)
- Over Current Detection Function per Cycle
- Soft Start Function
- Evaluation Board
Non-Isolation Buck Converter, PWM method, 9 W 12 V
Schematic Design & Verification
- Calculation-sheet for the circuit theoretical formula (PWM Buck)
- DIP7K Footprint / Symbol
- DIP7K 3D STEP Data