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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.
Output voltage regulation is obtained by modulating the operating frequency. A fixed deadtime 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.
The IC can be forced to enter a controlled burst-mode operation at light load, so as to keep converter's 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.主要特性
- 600 V-rail compatible high-side gate driver with integrated bootstrap diode and high dV/dt immunity
- Non-linear soft-start for monotonic output voltage rise
- DIP-16, SO-16N packages
- -300/800 mA high-side and low-side gate drivers with UVLO pull-down
- Burst-mode operation at light load
- Latched disable input
- 50 % duty cycle, variable frequency control of resonant half-bridge
- Up to 500 kHz operating frequency
- High-accuracy oscillator
- Interface with PFC controller
- Input for power-ON/OFF sequencing or brownout protection
- Two-level OCP: frequency-shift and latched shutdown
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图片 产品型号 制造商 描述 
STEVAL-ISC002V1 -- 基于L6599和STP9NK50ZF的谐振LCC 90 W笔记本电脑电源适配器 产品型号基于L6599和STP9NK50ZF的谐振LCC 90 W笔记本电脑电源适配器
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质量与可靠性
| 产品型号 | Marketing Status | 封装 | 等级规格 | 符合RoHS级别 | 材料声明** |
|---|---|---|---|---|---|
| L6599D |
NRND
|
SO-16 | 工业 | Ecopack2 |
|
| L6599DTR |
NRND
|
SO-16 | 工业 | Ecopack2 |
|
L6599D
Package:
SO-16Material Declaration**:
L6599DTR
Package:
SO-16Material Declaration**:
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持 。
样片和购买
| 产品型号 | 从分销商订购 | 从ST订购 | 供货状态 | ECCN (US) | ECCN (EU) | 包装类型 | 封装 | 温度（ºC） | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||
| L6599DTR | 6 distributors | 立即购买 |
NRND
|
EAR99 | NEC | Tape And Reel | SO-16 | - | - | CHINA | 0.836 / 1k | |
| L6599D | 7 distributors | 立即购买 |
NRND
|
EAR99 | NEC | Tube | SO-16 | - | - | CHINA | 0.836 / 1k | |
