STMicroelectronics PM6680A
PM6680A is a dual step-down controller specifically designed to provide extremely high efficiency conversion, with loss less current sensing technique. The constant on-time architecture assures fast load transient response and the embedded voltage feed-forward provides nearly constant switching frequency operation. The PM6680A provides a selectable switching frequency, allowing three different values of switching frequencies for the two switching sections.| Part No. | PM6680A |
|---|---|
| Datasheet | PM6680A Download |
| Manufacturer |  STMicroelectronics |
| Description | Dual synchronous step-down controller |
| Buy | Stock & Price |
FEATURES
● 6 V to 36 V input voltage range● Adjustable output voltages
● 5V LDO delivers 100 mA peak current
● 1.237 V ± 1 % reference voltage available externally
● Current sensing using low side MOSFETs RDS(on)
● Valley current sensing
● Soft-start internally fixed at 2ms
● Soft output discharge
● Latched OVP and UVP
● Selectable pulse skipping at light loads
● Selectable minimum frequency (33 kHz) in pulse skip mode
● 5mW maximum quiescent power
● Independent power good signals
● Output voltage ripple compensation
● Thermal shutdown
APPLICATIONS
● Embedded computer system● FPGA system power
● Industrial applications on 24 V
● High performance and high density DC/DC modules VFQFPN-32 5X5
DESCRIPTION
An embedded integrator control loop compensates the DC voltage error due to the output ripple. Pulse skipping technique increases efficiency at very light load. Moreover a minimum switching frequency of 33 kHz is selectable to avoid audio noise issues. The output voltages OUT1 and OUT2 can be adjusted from 0.9 V to 5 V and from 0.9 V to 3.3 V respectively.
