IL700D
H
IGH
V
OLTAGE
H
IGH
-F
REQUENCY
S
TEP
-U
P
S
WITCHING
R
EGULATOR
-C
ONTROLLER
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
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Pin Name
NC
Vdd
HV
NC
Vdd
Vz
CVREF
GND
FB
CSS
SENSE
NC
NC
NC
NC
SOURCE
SOURCE
SOURCE
NC
NC
DRAIN
Function
Not used
IC high power supply
Not used
IC internal low power supply
Voltage on zener diode
Reference voltage source pass
capacitor connection pin
Gnd pin
FB for external setting type
Soft-start capacitor connection pin
Current limit detection pin
Not used
Not used
Not used
Not used
Power switch source
Power switch source
Power switch source
Not used
Not used
Power Switch Drain
Korzhenevskogo 12, Minsk, 220108, Republic of
Belarus
Fax:
+375 (17) 278 28 22,
1
Phone: +375 (17) 278 07 11, 212 24 70, 212 24 61,
212 69 16
E-mail: office@bms.by
URL: www.bms.by
INTEGRAL [ INTEGRAL CORP. ]
