L6599DTR STMicroelectronics, L6599DTR Datasheet - Page 4

• Manufacturer Part Number: L6599DTR
• Description: IC RESONANT CONVRTR CTRLR 16SOIC
• Manufacturer: STMicroelectronics
• Type: Phase Shift Resonant Controllerr

Specifications of L6599DTR

• Applications: Resonant Converter Controller
• Voltage - Supply: 8.85 V ~ 16 V
• Current - Supply: 3.5mA
• Operating Temperature: 0°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Number Of Outputs: Single Output
• Output Current: 800 mA
• Switching Frequency: 500 KHz
• Operating Supply Voltage: 8.85 V to 16 V
• Maximum Operating Temperature: + 150 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• For Use With: 497-10542 - BOARD EVAL BASED ON L6599497-8429 - BOARD ADAPTER L6599/STP12NM50N497-8265 - BOARD EVAL BASED ON L6599497-5857 - DEMO BOARD FOR L6599497-5856 - DEMO BOARD FOR L6599497-5497 - EVAL BOARD FOR L6599497-5496 - EVAL BOARD FOR L6599
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Input: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-6156-2

Pin settings
2
2.1
2.2
Table 2.
4/36
N.
1
2
3
DELAY
Name
Pin functions
C
Pin settings
Connection
Figure 2.
Functions
CF
SS
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-start). An internal switch discharges this capacitor
every time the chip turns OFF (V
1.5 V, DELAY > 3.5 V) to make sure it will be soft-started next, and when the voltage on the
current sense pin (ISEN) exceeds 0.8V, as long as it stays above 0.75 V.
Delayed shutdown upon overcurrent. A capacitor and a resistor are connected from this pin
to GND to set both 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 150µA 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 will decay because of the external resistor. The IC will be soft-restarted as the voltage
drops below 0.3V. In this way, under short circuit conditions, the converter will work
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.
Pin connection (top view)
DELAY
RFmin
STBY
ISEN
LINE
Css
DIS
CF
1
2
3
4
5
6
7
8
CC
< UVLO, LINE < 1.25 V or > 6 V, DIS > 1.85 V, ISEN >
Function
16
15
14
13
12
11
10
9
VBOOT
HVG
OUT
N.C.
Vcc
LVG
GND
PFC_STOP
L6599