PFS7623L datasheet(3/38 Pages) POWERINT

3 / 38 page

Rev. F 08/20

PFS7x23-7x29/7633-7636

www.power.com

Description

The HiperPFS™-4 devices incorporate a continuous conduction mode

(CCM) boost PFC controller, gate driver and 600 V power MOSFET in a

single, low-profile (GROUND pin connected) power package. HiperPFS-4

devices eliminate need for external current sense resistors and their

associated power loss, and use an innovative control technique that

adjusts the switching frequency over output load, input line voltage,

and input line cycle.

This control technique maximizes efficiency over the entire load range,

particularly at light loads. Additionally, it minimizes the EMI filtering

requirements due to its wide bandwidth spread spectrum effect. The

HiperPFS-4 uses advanced digital techniques for line monitoring, 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-4 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-4 includes Power

Integrations’ standard set of comprehensive protection features, such

as UV, OV, brown-in/out, and hysteretic thermal shutdown. HiperPFS-4

also provides cycle-by-cycle current limit and Safe Operating Area

(SOA) protection of the power MOSFET, output power limiting for

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

HiperPFS-4’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-4

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-4 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-4 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 where fixed MOSFET switching frequencies cause fixed

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

featuring flat efficiency across the load range, HiperPFS-4 also enables

a high power factor of >0.95 at 20% load. HiperPFS-4 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-4’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 with

maximum continuous power from 75 W to 405 W universal (550 W

high-line only).

Product Highlights

Protected Power Factor Correction Solution

• Incorporates 600 V power MOSFET, controller and gate driver.

• EN61000-3-2 Class C and Class D compliance.

• Integrated protection features reduce external component count

• Accurate built-in brown-in/out protection.

• Accurate built-in undervoltage (UV) protection.

• Accurate built-in overvoltage (OV) protection.

• Hysteretic thermal shutdown (OTP).

• Internal power limiting function for overload protection.

• Cycle-by-cycle power-switch current limit.

• Internal non-linear error amplifier for enhanced load transient

response

• No external current sense resistor required.

• Provides ‘lossless’ internal sensing via sense-FET.

• Reduces component count and system losses.

• Minimizes high current gate drive loop area.

• Minimizes output overshoot and stresses during start-up

• Integrated power limit.

• Improved dynamic response.

• Digitally controlled input line feed-forward gain adjustment for

flattened loop gain across entire input voltage range.

• Eliminates up to 39 discrete components for higher reliability and

lower cost.

Solution for High Efficiency, Low EMI and High PF

• Continuous conduction mode PFC uses novel constant amp-second

[on-time] volt-second [off-time] control.

• High efficiency across load.

• High power factor across load.

• Frequency sliding technique for light load efficiency improvements.

• >95% efficiency from 10% load to full load achievable at

nominal input voltages.

• Variable switching frequency to simplify EMI filter design.

• Varies over line input voltage to maximize efficiency and

minimize EMI filter requirements.

• Varies with input line cycle voltage by >60 kHz to maximize

spread spectrum effect.

Advanced Package for High Power Applications

(H & L Packages)

• Up to 450 W [universal], 610 W [high-line only] peak output power

capability in a highly compact package.

• Simple adhesive or clip mounting to heat sink.

• No insulation pad required and can be directly connected to

heat sink.

• Staggered pin arrangement allows simple routing of board traces

and to meet high-voltage creepage requirements.

• Single package solution for PFC converter reduces assembly costs

and layout size.

SMD Package (C Package)

• Allows the elimination of metal heat sink.

• Use PCB copper foil for heat dissipation.

Pin Functional Description

BIAS POWER (VCC) Pin

This is a 10.2-15 VDC [12 V typical] bias supply used to power the IC.

The bias voltage must be externally clamped to prevent the BIAS

POWER pin from exceeding 15 VDC to ensure long-term reliability

REFERENCE (REF) Pin

This pin is connected to an external bypass capacitor and is used to

program the IC for either FULL or EFFICIENCY power mode. The

external capacitor is connected between the REFERENCE and SIGNAL

GROUND [G] pins. Note: the return trace to the ground pin must not

be shared with other return traces that may pass large return

currents during surge events. The REFERENCE pin has two valid

capacitor values to select ‘Full’ (1.0 mF ±20%) or ‘Efficiency’ (0.1 mF

±20%) power modes.

SIGNAL GROUND (G) Pin

Discrete components used in the feedback circuit, including loop

compensation, decoupling capacitors for the BIAS POWER (VCC),

REFERENCE (REF) and VOLTAGE MONITOR (V) must be referenced to

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