產品詳情
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
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
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