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