IL700D Datasheet, PDF (1/4 Pages) Integral Corp. – HIGH VOLTAGE HIGH-FREQUENCY STEP-UP SWITCHING REGULATOR-CONTROLLER

IL700D
HIGH VOLTAGE HIGH-FREQUENCY STEP-UP SWITCHING REGULATOR-CONTROLLER
The IL700D is a monolithic high voltage switching regulator-controllers with
PWM/PFM control that is specifically designed to operate from a rectified 220 VAC
line source. This device contain a reference voltage source, oscillation circuit, error
amplifier, phase compensation circuit, PWM control circuit, power supply 450 V
MOS-transistor, 700 V DMOS power switch, and other components. Since the
oscillation frequency is a high 600 kHz, with the addition of a small external
component, the IC can function as switching regulator with high efficiency.
The IL700D provides low-ripple power, high-efficiency, and excellent transient
characteristics thanks to a PWM control circuit capable of varying the duty ratio linearly
from 0% to 82% and optimized error amplifier, and phase compensation circuit.
The IL700D contains a PWM/PFM switching control circuit so that it operates
using PWM control with a duty ratio of 27% or higher and using PFM control with a
duty ratio of lower than 27% to ensure high efficiency in all load ranges.
Pin Pin Name Function
No.
1
NC
Not used
2
Vdd_HV IC high power supply
3
NC
Not used
4
Vdd IC internal low power supply
5
Vz
Voltage on zener diode
6 CVREF Reference voltage source pass
capacitor connection pin
7
GND Gnd pin
8
FB
FB for external setting type
9
CSS Soft-start capacitor connection pin
10 SENSE Current limit detection pin
11
NC
Not used
12
NC
Not used
13
NC
Not used
14
NC
Not used
15 SOURCE Power switch source
16 SOURCE Power switch source
17 SOURCE Power switch source
18
NC
Not used
19
NC
Not used
20 DRAIN Power Switch Drain
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