PFS7524LSLASHH中文资料POWERINT数据手册PDF规格书

Applications

• E-bike and EV 2-Wheeler • 80 Plus™ Platinum

chargers designs

• Power tool chargers • High-power adaptors

• PC • High-power LED lighting

• Printer • Industrial and appliance

• LCD TV • Generic PFC converter

• Video game consoles

描述 Description

The HiperPFS™-3 devices incorporate a continuous conduction mode

(CCM) boost PFC controller, gate driver, ultra-low reverse recovery

(Qspeed™) diode and high-voltage power MOSFET in a single,

low-profile (GROUND pin connected) power package. HiperPFS-3

devices eliminate the PFC converter’s need for external current sense

resistors and the associated power loss, and use an innovative control

technique that adjusts the switching frequency over output load,

input line voltage, and even input line cycle.

This control technique maximizes efficiency over the entire load range

of the converter, particularly at light loads. Additionally, it significantly

minimizes the EMI filtering requirements due to its wide bandwidth

spread spectrum effect. The HiperPFS-3 uses advanced digital

techniques for line monitoring functions, line feed-forward scaling, and

power factor enhancement, while using analog techniques for the

core controller in order to maintain extremely low no-load power

consumption. The HiperPFS-3 also features an integrated non-linear

error amplifier for enhanced load transient response, a user programmable

Power Good (PG) signal as well as user selectable power limit

functionality. HiperPFS-3 includes Power Integrations’ standard set of

comprehensive protection features, such as integrated UV, OV,

brown-in/out, and hysteretic thermal shutdown. HiperPFS-3 also

provides cycle-by-cycle current limit and Safe Operating Area (SOA)

protection of the power MOSFET, power limiting of the output for

overload protection, and pin-to-pin short-circuit protection.

HiperPFS-3’s innovative variable frequency continuous conduction

mode operation (VF-CCM) minimizes switching losses by maintaining

a low average switching frequency, while modulating the switching

frequency in order to suppress EMI, the traditional challenge with

continuous conduction mode solutions. Systems using HiperPFS-3

typically reduce the total X and Y capacitance requirements of the

converter, the inductance of both the boost choke and EMI noise

suppression chokes, thereby reducing overall system size and cost.

Additionally, HiperPFS-3 devices dramatically reduce component count

and board footprint while simplifying system design and enhancing

reliability, when compared with designs that use discrete MOSFETs

and controllers. The innovative variable frequency, continuous

conduction mode controller enables the HiperPFS-3 to realize all of

the benefits of continuous conduction mode operation while leveraging

low-cost, small, simple EMI filters.

Many regions mandate high power factor for many electronic

products with high power requirements. These rules are combined

with numerous application-specific standards that require high power

supply efficiency across the entire load range, from full load to as low

as 10% load. High efficiency at light load is a challenge for traditional

PFC solutions in which fixed MOSFET switching frequencies cause

fixed switching losses on each cycle, even at light loads. In addition

to featuring relatively flat efficiency across the load range, HiperPFS-3

also enables high power factor of >0.92 at 20% load. HiperPFS-3

simplifies compliance with new and emerging energy-efficiency

standards over a broad market space in applications such as PCs, LCD

TVs, notebooks, appliances, pumps, motors, fans, printers and LED

lighting.

HiperPFS-3’s advanced power packaging technology and high efficiency

simplify the complexity of mounting the IC and thermal management,

while providing very high power capabilities in a single compact

package; these devices are suitable for PFC applications from 75 W to

900 W.