HA16158P/FP

PFC & PWM Control IC

ADE-204-072 (Z)

Rev.0

Aug. 2002

Description

The HA16158 is a power supply controller IC combining an AC-DC converter switching controller for

power factor correction and an off-line power supply switching controller. The PFC (power factor

correction) section employs average current mode PWM and the off-line power supply control section

employs peak current mode PWM.

The HA16158 allows the operating frequency to be varied with a single timing resistance, enabling it to be

used for a variety of applications.

The PFC operation can be turned on and off by an external control signal. Use of this on/off function

makes it possible to disable PFC operation at a low line voltage, or to perform remote control operation

from the transformer secondary side.

The PWM controller includes a power-saving function that reduces the operating frequency to a maximum

of 1/64 in the standby state, greatly decreasing switching loss.

The PFC section and PWM section are each provided with a soft start control pin, enabling a soft start time

to be set easily.

Features

<Maximum Ratings>

• Supply voltage Vcc: 24 V

• Operating junction temperature Tjopr: –40°C to +125°C

<Electrical Characteristics>

• VREF output voltage VREF: 5.0 V ± 2%

• UVLO start threshold VH: 16.0 V ± 1.0 V

• UVLO shutdown threshold VL: 10.0 V ± 0.6 V

• PFC output maximum duty cycle Dmax-pfc: 95% typ.

• PWM output maximum duty cycle Dmax-pwm: 45% typ.

<Functions>

• Synchronized PFC and PWM timing

• PFC function on/off control

• PWM power-saving function (frequency reduced to maximum of 1/64)

• PWM overvoltage latch protection circuit

• Soft start control circuits for both PFC and PWM

• Package lineup: SOP-16/DILP-16