Product Details
starting voltage
10.5V
turn off voltage
7.9V
starting current
200uA
static current
2mA
switching frequency
frequency modulation
drive current
0.3A/0.8A
package
SOP16
- 50% duty cycle, frequency conversion controlled resonant half bridge
- High precision oscillator with a working frequency of up to 500kHz
- Two level OCP, frequency shift and latch off
- Interface with PFC controller
- Lock disable input
- Sudden mode protection under light load
- Equipped with soft start protection and power failure protection
- Equipped with high voltage protection
- High side 650V gate driver- 0.3A/0.8A high side and low side gate pole drive
- Lead free and halogen-free comply with ROHS standards
- Packaging form: SOP16L
- LCD & PDP TV
- AC-DC adapter
- Desktop PC, entry-level server
- Switching power supply for telecommunications equipment
It is a dual ended controller designed specifically for resonant half bridge topology structures. Provide a 50% complementary duty cycle, with the high side switch and low side switch having the same time and a phase difference of 180 °. Adjust the output voltage by modulating the operating frequency. A fixed dead time ensures soft switching and high-frequency operation, an external oscillator can set the operating frequency of the converter, and an internal bootstrap diode is included. At startup, the switching frequency gradually decreases from its maximum value and reaches a steady-state value determined by the control circuit. IC can be forced to enter controlled burst mode operation under light load to keep the input power consumption of the converter to a minimum. The functions include effective low level disable input without latch, current hysteresis and undervoltage protection, current detection input, frequency automatic restart, switching and delayed shutdown, etc. The two-stage OCP can provide a complete overload and short circuit protection circuit, and the additional latch disable input (DIS) is easy to implement OTP or OVP. It provides an interface with the PFC controller and can be turned off in case of fault or operated during burst mode