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PDF L6599A Data sheet ( Hoja de datos )
| Número de pieza | L6599A | |
| Descripción | Improved high-voltage resonant controller | |
| Fabricantes | STMicroelectronics | |
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L6599A
Improved high-voltage resonant controller
Features
■ 50% duty cycle, variable frequency control of
resonant half bridge
■ High-accuracy oscillator
■ Up to 500 kHz operating frequency
■ Two-level OCP: frequency-shift and latched
shutdown
■ Interface with PFC controller
■ Latched disable input
■ Burst mode operation at light load
■ Input for power-ON/OFF sequencing or
brownout protection
■ Non-linear soft-start for monotonic output
voltage rise
■ 600 V-rail compatible high-side gate driver with
integrated bootstrap diode and high dv/dt
immunity
■ -300/800 mA high-side and low-side gate
drivers with UVLO pull-down
■ DIP16, SO16N package
Applications
■ LCD and PDP TV
■ Desktop PC, entry-level server
■ Telecom SMPS
■ High efficiency industrial SMPS
■ AC-DC adapter, open frame SMPS
Table 1.
Device summary
Order code
L6599AN
L6599AD
L6599ADTR
Package
DIP16
SO16N
SO16N
Datasheet − production data
DIP16
SO16N
Packaging
Tube
Tube
Tape and reel
January 2013
This is information on a product in full production.
Doc ID 15308 Rev 7
1/35
www.st.com
35
1 page  
L6599A
3 Pin connection
Pin connection
Figure 2.
Pin connection (top view)
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Table 2.
Pin N#
1
2
3
Pin description
Type
Function
Soft-start. This pin connects an external capacitor to GND and a resistor to
RFmin (pin 4) that set both the maximum oscillator frequency and the time
constant for the frequency shift that occurs as the chip starts up (soft-
Css
start). An internal switch discharges this capacitor every time the chip turns
off (Vcc < UVLO, LINE < 1.24 V or > 6 V, DIS > 1.85 V, ISEN > 1.5 V,
DELAY > 2 V) to make sure it is soft-started next, and when the voltage on
the current sense pin (ISEN) exceeds 0.8 V, as long as it stays above 0.75
V.
DELAY
CF
Delayed shutdown upon overcurrent. A capacitor and a resistor are
connected from this pin to GND to set the maximum duration of an
overcurrent condition before the IC stops switching and the delay after
which the IC restarts switching. Every time the voltage on the ISEN pin
exceeds 0.8 V, the capacitor is charged by an internal 150 µA current
generator and is slowly discharged by the external resistor. If the voltage
on the pin reaches 2 V, the soft-start capacitor is completely discharged so
that the switching frequency is pushed to its maximum value and the 150
µA is kept always on. As the voltage on the pin exceeds 3.5 V the IC stops
switching and the internal generator is turned off, so that the voltage on the
pin decays because of the external resistor. The IC is soft-restarted as the
voltage drops below 0.3 V. In this way, under short-circuit conditions, the
converter works intermittently with very low input average power.
Timing capacitor. A capacitor connected from this pin to GND is charged
and discharged by internal current generators programmed by the external
network connected to pin 4 (RFmin) and determines the switching
frequency of the converter.
Doc ID 15308 Rev 7
5/35
5 Page 
L6599A
Table 5.
Symbol
Electrical characteristics (continued)
Parameter
Test condition
Low-side gate driver (voltages referred to GND)
VLVGL
VLVGH
Isourcepk
Isinkpk
tf
tr
Output low voltage
Output high voltage
Peak source current
Peak sink current
Fall time
Rise time
UVLO saturation
Isink = 200 mA
Isource = 5 mA
Vcc = 0 to VccOn,
Isink = 2 mA
High-side gate driver (voltages referred to OUT)
VLVGL
VLVGH
Isourcepk
Isinkpk
tf
tr
Output low voltage
Output high voltage
Peak source current
Peak sink current
Fall time
Rise time
HVG-OUT pull-down
Isink = 200 mA
Isource = 5 mA
1. Values tracking each other.
Electrical characteristics
Min. Typ. Max. Unit
12.8 13.3
-0.3
0.8
30
60
1.5
1.1
V
V
A
A
ns
ns
V
12.8 13.3
-0.3
0.8
30
60
25
1.5
V
V
A
A
ns
ns
kΩ
Doc ID 15308 Rev 7
11/35
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet L6599A.PDF ] | |
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