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HA16148PS

AC/DC Switching Converter Controller IC

With High-Voltage Power MOS FET

ADE-204-034A (Z)

Preliminary

2nd Edition

Oct. 2000

Description

The HA16148PS is an IC with a high-voltage power MOS FET and current-mode type PWM controller

mounted in a DILP-8 (DP-8) standard package, suitable for low-power power supplies in the

10 W class and below.

The HA16148PS includes an energy-saving mode for holding down power consumption when on standby

(no load). When the energy-saving mode is entered, the operating frequency is reduced to 1/4 the normal

frequency, reducing power consumption. A starter circuit is also provided on-chip, eliminating the need for

the external start-up resistance needed with previous controller ICs. The starter circuit in this IC is turned

off automatically after the IC starts up, enabling the start-up resistance power consumption to be decreased.

The HA16148PS includes a soft start circuit, OVP circuit, and remote on/off circuit, making it possible to

configure a simple protection circuit with fewer external parts than previously. Also provided are a current

sense resistance and a leading edge blanking circuit that masks spike noise on current sense input, making

noise reduction in a power supply set comparatively easy.

The HA16148PS is equipped with an error amp circuit inverting input (FB) pin and output (COMP) pin,

enabling special-purpose design for both flyback system secondary-side output voltage detection and

primary-side back-up transformer output voltage detection types.

Features

鈥?/div>

Built-in high-voltage power MOS FET

鈥?/div>

Energy-saving mode (power saving through reduction of operating frequency to 1/4 normal frequency

when on standby)

鈥?/div>

Built-in starter circuit, reducing power loss of start-up resistance when on standby (external start-up

resistance not necessary)

鈥?/div>

Built-in soft start circuit, eliminating need for external connection

鈥?/div>

Remote on/off function, enabling power saving by halting PWM output without turning off power

supply

鈥?/div>

Built-in current sense resistance and leading edge blanking circuit, for sense-resistance-less and noise-

cancellation-filter-less implementation

鈥?/div>

Built-in over voltage protection circuit

鈥?/div>

Built-in over temperature protection circuit

型號(hào)

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描述

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HA16148PS Datasheet

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