L6599D STMicroelectronics, L6599D Datasheet

IC RESONANT CONVRTR CTRLR 16SOIC

L6599D

Manufacturer Part Number
L6599D
Description
IC RESONANT CONVRTR CTRLR 16SOIC
Manufacturer
STMicroelectronics
Type
Phase Shift Resonant Controllersr
Datasheet

Specifications of L6599D

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 Current
800 mA (Max)
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
Supply Voltage Range
8.85V To 16V
Digital Ic Case Style
SOIC
No. Of Pins
16
Operating Temperature Range
-40°C To +150°C
Svhc
No SVHC (15-Dec-2010)
Base Number
6599
Device Type
Power
Rohs Compliant
Yes
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

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Features
Figure 1.
February 2009
This is information on a product still in production but not recommended for new designs.
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
DIP-16, SO-16N packages
RFmin
STBY
Block diagram
Css
DIS
CF
1.85V
1.25V
8
5
4
1
3
Ifmin
DISABLE
+
+
VCO
-
-
UVLO
+
-
S Q
R
2V
STANDBY
DIS
CONTROL
LOGIC
2
DELAY
Vcc
12
17V
DETECTION
DEAD
TIME
UV
UVLO
Rev 3
6.3V
ISEN_DIS
BOOTSTRAP DIODE
Table 1.
High-voltage resonant controller
SYNCHRONOUS
7
Applications
1.25V
µA
15
DRIVING
LINE
Order codes
LCD and PDP TV
Desktop PC, entry-level server
Telecom SMPS
AC-DC adapter, open frame SMPS
LOGIC
L6599DTR
L6599D
L6599N
Q S
R
+
-
DIP-16
UVLO
Order code
LINE_OK
STANDBY
ISEN_DIS
L VG DRIVER
SHIFTER
DRIVER
LEVEL
HVG
DIS
+
+
-
-
Package
SO-16N
SO-16N
DIP-16
1.5V
0.8V
Vs
16
15
14
11
10
9
6
SO-16N
Not for new design
V
HVG
OUT
L VG
GND
ISEN
PFC_STOP
BOOT
Tape and reel
Packaging
L6599
H.V.
Tube
Tube
www.st.com
C
LC TANK
CIRCUIT
BOOT
1/36
36

Related parts for L6599D

L6599D Summary of contents

Page 1

... SYNCHRONOUS BOOTSTRAP DIODE UVLO STANDBY DRIVING LOGIC DEAD TIME ISEN_DIS CONTROL LOGIC 1.25V 6.3V 15 µ DELAY LINE Rev 3 Not for new design DIP-16 SO-16N Order code Package L6599D SO-16N SO-16N L6599N DIP- BOOT 15 HVG HVG DRIVER 14 OUT LEVEL SHIFTER DRIVER 10 + GND ...

Page 2

Contents Contents 1 Device description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

L6599 1 Device description The L6599 is a double-ended controller specific for the resonant half-bridge topology. It provides 50 % complementary duty cycle: the high-side switch and the low-side switch are driven ON\OFF 180° out-of-phase for exactly the same time. ...

Page 4

Pin settings 2 Pin settings 2.1 Connection Figure 2. Pin connection (top view) 2.2 Functions Table 2. Pin functions N. Name Soft start. This pin connects an external capacitor to GND and a resistor to RFmin (pin 4) that set ...

Page 5

L6599 Table 2. Pin functions (continued) N. Name Minimum oscillator frequency setting. This pin provides a precise 2 V reference and a resistor connected from this pin to GND defines a current that is used to set the minimum oscillator ...

Page 6

Typical system block diagram Table 2. Pin functions (continued) N. Name Low-side gate-drive output. The driver is capable of 0.3 A min. source and 0.8 A min. sink 11 LVG peak current to drive the lower MOSFET of the half-bridge ...

Page 7

L6599 4 Electrical data 4.1 Maximum ratings Table 3. Absolute maximum ratings Symbol Pin V 16 BOOT V 14 OUT 14 dV /dt OUT PFC_STOP I 9 PFC_STOP V 7 LINEmax I 4 RFmin 1 ...

Page 8

Electrical characteristics 5 Electrical characteristics 105 ° kΩ; unless otherwise specified. RFmin Table 5. Electrical characteristics Symbol IC supply voltage V Operating range CC V Turn-ON threshold CC(ON) V Turn-OFF threshold ...

Page 9

L6599 Table 5. Electrical characteristics (continued) Symbol Line sensing V Threshold voltage th I Current hysteresis Hyst V Clamp level clamp DIS function I Input bias current DIS V Disable threshold th Oscillator D Output duty cycle f Oscillation frequency ...

Page 10

Electrical characteristics Table 5. Electrical characteristics (continued) Symbol Delayed shutdown function I Open-state current leak I Charge current CHARGE Threshold for forced Vth 1 operation at max. frequency Vth Shutdown threshold 2 Vth Restart threshold 3 Low - side gate ...

Page 11

L6599 6 Typical electrical performance Figure 4. Device consumption vs supply voltage Figure 6. V clamp voltage vs CC junction temperature Typical electrical performance Figure 5. IC consumption vs junction temperature Figure 7. UVLO thresholds vs junction temperature 11/36 ...

Page 12

Typical electrical performance Figure 8. Oscillator frequency vs junction temperature Figure 10. Oscillator frequency vs timing components 12/36 Figure 9. Dead-time vs junction temperature Figure 11. Oscillator ramp vs junction temperature L6599 ...

Page 13

L6599 Figure 12. Reference voltage vs junction temperature Figure 14. OCP delay source current vs junction temperature Typical electrical performance Figure 13. Current mirroring ratio vs junction temperature Figure 15. OCP delay thresholds vs junction temperature 13/36 ...

Page 14

Typical electrical performance Figure 16. Standby thresholds vs junction temperature Figure 18. Line thresholds vs junction temperature Figure 20. Latched disable threshold vs junction temperature 14/36 Figure 17. Current sense thresholds vs junction temperature Figure 19. Line source current vs ...

Page 15

L6599 7 Application information The L6599 is an advanced double-ended controller specific for resonant half-bridge topology. In these converters the switches (MOSFETs) of the half-bridge leg are alternately switched on and OFF (180° out-of-phase) for exactly the same time. This ...

Page 16

Application information 7.1 Oscillator The oscillator is programmed externally by means of a capacitor (CF), connected from pin 3 (CF) to ground, that will be alternately charged and discharged by the current defined with the network connected to pin 4 ...

Page 17

L6599 After fixing CF in the hundred the nF (consistently with the maximum source capability of the RF the value of RF min cover the entire range needed for regulation, from the minimum value f voltage and ...

Page 18

Application information 7.2 Operation at no load or very light load When the resonant half-bridge is lightly loaded or unloaded at all, its switching frequency will be at its maximum value. To keep the output voltage under control in these ...

Page 19

L6599 Essentially, RF max burst-mode operation. Once fixed f Note that, unlike the associated to some load Pout max the transformer's peak currents are low enough not to cause audible noise. Resonant converter's switching frequency, however, depends ...

Page 20

Application information Figure 26. Load-dependent operating modes: timing diagram STBY 1.25V f osc LVG HVG PFC_STOP PFC GATE-DRIVE Figure 27. How the L6599 can switch OFF a PFC controller at light load Vcc 12 L6599 9 20/36 Resonant Mode Burst-mode ...

Page 21

L6599 7.3 Soft-start Generally speaking, purpose of soft-start is to progressively increase converter's power capability when it is started up avoid excessive inrush current. In resonant converters the deliverable power depends inversely on frequency, then soft- start ...

Page 22

Application information Figure 29. Power vs frequency curve in an resonant half-bridge As a result, the average input current will smoothly increase, without the peaking that occurs with linear frequency sweep, and the output voltage will reach the regulated value ...

Page 23

L6599 7.4 Current sense, OCP and OLP The resonant half-bridge is essentially voltage-mode controlled; hence a current sense input will only serve as an overcurrent protection (OCP). Unlike PWM-controlled converters, where energy flow is controlled by the duty cycle of ...

Page 24

Application information Figure 31. Lossless current sensing technique, with capacitive shunt pk The device is equipped with a current sensing input (pin 6, ISEN) and a sophisticated overcurrent management system. The ISEN pin is internally connected to the input of ...

Page 25

L6599 The circuit shown in is small (not above some hundred Ω, just to limit current spiking) the circuit series operates like a capacitive current divider; C less and will be a low-loss type, the sense resistor ...

Page 26

Application information Figure 32. Soft-start and delayed shutdown upon overcurrent timing diagram Vcc T Css 2V Primary Current 0A ISEN 0.8V 3.5V DELAY 2V 0.3V Vout PFC_STOP START-UP SOFT-START This function is realized with pin 2 (DELAY), by means of ...

Page 27

L6599 The timing diagram of Note that if during T threshold the IC keeps memory of the event and will not restart immediately after V exceeds the start-up threshold if V(DELAY) is still higher than 0.3 V. Also the PFC_STOP ...

Page 28

Application information Figure 33. Line sensing function: internal block diagram and timing diagram With reference to (Vin ) and OFF (Vin ON which, solved for R While the line undervoltage is active there is no PWM activity, thus the V ...

Page 29

L6599 voltage on the pin exceeds 7 V the device is shutdown. If its supply voltage is always above the UVLO threshold, the IC will restart as the voltage falls below 7 V. The LINE pin, while the device is ...

Page 30

Application information This concern applies to converters designed with a high resonance frequency (indicatively, > 150 kHz), so that they run at high frequency also at full load. Otherwise, the converter will run at high frequency only at light load, ...

Page 31

L6599 7.8 Application example Figure 35. EVAL6599-90W demo board, 90W adapter with L6563 and L6599: electrical schematic Application information 31/36 ...

Page 32

Application information Table 6. EVAL6599-90W demo board, 90W adapter with L6563 & L6599: evaluation data Vin = 115 Vac Vout Iout [V] [A] 18.95 4.71 18.95 3.72 18.97 2.7 18.98 1.71 18.99 1.0 18.99 0.5 19.00 0.25 19.01 0.080 19.01 ...

Page 33

L6599 8 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ...

Page 34

Package mechanical data Table 8. SO16N mechanical data Dim ( ( Figure 37. Package dimensions 34/36 mm. Min Typ Max 1.75 0.1 0.25 1.6 ...

Page 35

L6599 9 Revision history Table 9. Document revision history Date 15-May-2006 18-Jul-2006 11-Feb-2009 Revision 1 Initial release 2 Typo in cover page Not recommended for new designs, the device has been 3 replaced by L6599A Revision history Changes 35/36 ...

Page 36

... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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