L6599A IMPROVED HIGH-VOLTAGE RESONANT CONTROLLER
The L6599A is an improved revision of the previous L6599. It is a double-ended controller specific for the series-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. Output voltage regulation is obtained by modulating the operating frequency. A fixed dead-time inserted between the turn-off of one switch and the turn-on of the other one guarantees soft-switching and enables high-frequency operation.
To drive the high-side switch with the bootstrap approach, the IC incorporates a high-voltage floating structure able to withstand more than 600 V with a synchronous-driven high-voltage DMOS that replaces the external fast-recovery bootstrap diode.
The IC enables the designer to set the operating frequency range of the converter by means of an externally programmable oscillator.
At start-up, to prevent uncontrolled inrush current, the switching frequency starts from a programmable maximum value and progressively decays until it reaches the steady-state value determined by the control loop. This frequency shift is non linear to minimize output voltage overshoots; its duration is programmable as well.
At light load the IC may enter a controlled burst-mode operation that keeps the converter input consumption to a minimum.
IC’s functions include a not-latched active-low disable input with current hysteresis useful for power sequencing or for brownout protection, a current sense input for OCP with frequency shift and delayed shutdown with automatic restart. A higher level OCP latches off the IC if the first-level protection is not sufficient to control the primary current. Their combination offers complete protection against overload and short circuits. An additional latched disable input (DIS) allows easy implementation of OTP and/or OVP.
An interface with the PFC controller is provided that enables to switch off the pre-regulator during fault conditions, such as OCP shutdown and DIS high, or during burst-mode operation
技术特性
- 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
|
功能框图
 |
L6599A 订购信息
| 订购型号 |
产品状态 |
美金价格 |
数量 |
封装 |
包装形式 |
温度范围 |
材料声明 |
| L6599ADTR |
Active |
|
1000 |
SO-16 |
Tape And Reel |
|
|
| L6599AN |
Active |
|
1000 |
PDIP-16 |
Tube |
|
|
| L6599AD |
Active |
|
1000 |
SO-16 |
Tube |
|
|
DATASHEET
| 描述 |
版本 |
大小 |
| L6599A : Improved high-voltage resonant controller |
5 |
1596KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN4026: 19 V - 90 W adapter with PFC for laptop computers using the L6563H and L6699 |
1 |
989KB |
| AN3172: 19 V - 90 W adapter with PFC for Laptop computers using the L6563H and L6599A |
1 |
1846KB |
| AN3014: 19 V, 90 W resonant converter with synchronous rectification using the L6563H, L6599A and SRK2000 |
2 |
941KB |
| AN3339: 185 W power supply with PFC and standby supply for LED TV using the L6564, L6599A, and Viper27LN |
1 |
1578KB |
| AN3329: 170 W power supply with PFC and standby supply for flat TV using the L6564, L6599A, and Viper27LN |
1 |
1991KB |
| AN3233: 12 V - 150 W resonant converter with synchronous rectification using the L6563H, L6599A, and SRK2000 |
1 |
2155KB |
USER MANUALS
| 描述 |
版本 |
大小 |
| UM0727: STEVAL-ISA018V1 demonstration board based on resonant half-bridge SMPS for industrial applications |
1 |
1038KB |
PRODUCT PRESENTATIONS
BOARDS AND TOOLS
| 型号 |
描述 |
| EVL185W-LEDTV |
185 W power supply with PFC and standby supply for LED TV using the L6564, L6599A, and VIPER27L |
| EVL130W-STRLIG |
48 V - 130 W high efficiency converter with PFC for LED street lighting applications |
| EVL130W-SL-EU |
48 V - 130 W high efficiency converter with PFC for LED street lighting applications - European version |
| EVL150W-ADP-SR |
12 V - 150 W resonant converter with synchronous rectification using the L6563H, L6599A, and SRK2000 |
FLYERS
| 描述 |
版本 |
大小 |
| FLATX0511 : High-efficiency ATX design using asymmetrical half-bridge topology |
1.0.0 |
1148KB |
