L6598_04 Datasheet, PDF (1/17 Pages) STMicroelectronics – HIGH VOLTAGE RESONANT CONTROLLER

L6598
HIGH VOLTAGE RESONANT CONTROLLER
1 FEATURES
■ HIGH VOLTAGE RAIL UP TO 600V
■ dV/dt IMMUNITY ±50V/ns IN FULL
TEMPERATURE RANGE
■ DRIVER CURRENT CAPABILITY:
250mA SOURCE
450mA SINK
■ SWITCHING TIMES 80/40ns RISE/FALL WITH
1nF LOAD
■ CMOS SHUT DOWN INPUT
■ UNDER VOLTAGE LOCK OUT
■ SOFT START FREQUENCY SHIFTING
TIMING
■ SENSE OP AMP FOR CLOSED LOOP
CONTROL OR PROTECTION FEATURES
■ HIGH ACCURACY CURRENT CONTROLLED
OSCILLATOR
■ INTEGRATED BOOTSTRAP DIODE
■ CLAMPING ON Vs
■ SO16, DIP16 PACKAGES
2 DESCRIPTION
The device is manufactured with the BCD OFF LINE
Figure 2. Block Diagram
Figure 1. Packages
DIP-16
Table 1. Order Codes
Part Number
L6598
L6598D
L6598D013TR
SO-16N
Package
DIP-16
SO-16N
Tape & Reel
technology, able to ensure voltage ratings up to
600V, making it perfectly suited for AC/DC Adapters
and wherever a Resonant Topology can be benefi-
cial. The device is intended to drive two Power MOS,
in the classical Half Bridge Topology. A dedicated
Timing Section allows the designer to set Soft Start
Time, Soft Start and Minimum Frequency. An Error
Amplifier, together with the two Enable inputs, are
made available. In addition, the integrated Bootstrap
Diode and the Zener Clamping on low voltage sup-
ply, reduces to a minimum the external parts needed
in the applications.
5
OPOUT
6
OPIN-
7
OPIN+
OP AMP
+
-
Rfmin
Rfstart
Ifmin
4
Ifstart
2
V_REF
V_REF
3
VCO
Cf
June 2004
V_S
12
UV
DETECTION
DEAD
TIME
CONTROL
LOGIC
Iss
H.V.
16 VBOOT
BOOTSTRAP
DRIVER
DRIVING
LOGIC
HVG
DRIVER
LEVEL
SHIFTER
LVG DRIVER
Vthe1
+
-
Vthe2
+
-
15 HVG
14
OUT
Vs
11 LVG
10
GND
8
EN1
9
EN2
C_BOOT
LOAD
1
Css
D98IN887A
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