STMicroelectronics PM8804
The PM8804 is a PWM controller that integrates all the circuitry required to design a smart and efficient 48 V converter for PoE and telecom mid-power applications. It features a programmable oscillator for the switching frequency, adjustable slope compensation, dual complementary low-side drivers with programmable dead time, programmable soft-start, soft turn off and a programmable current sense blanking time. 21 6.2 How to layout the PM8804 ground pins .| Part No. | PM8804 |
|---|---|
| Datasheet | PM8804 Download |
| Manufacturer |  STMicroelectronics |
| Description | PWM peak current mode controller |
| Buy | Stock & Price |
FEATURES
● PWM peak current mode controller● Input operating voltage up to 75 V
● Internal high-voltage start up regulator with 20 mA current capability
● Current sense with programmable blanking time up to 200 ns
● Programmable fixed frequency up to 1 MHz
● Soft-start up with settable time
● Soft turn off (optionally disabled)
● Dual low-side complementary gate drivers
● Programmable dead time from 10 to 200 ns between GATE1 and GATE2
● Gate drivers have 1 A peak capability
● GATE2 optionally turned off for reduced consumption
● 80% maximum duty cycle with internal slope compensation
● Internal pull-up resistor on CTL pin enables the optocoupler connection
● Operating current consumption < 1.5 mA
● Embedded protections: – Severe overcurrent protection with latch after 4 events – Delayed overload protection with automatic restart – Feedback disconnection (OV) protection on VC – Thermal shutdown Datasheet - production data
● High efficiency topologies: – Flyback, forward – Flyback with...
