NCP1399APDR2G - 600V Half-Bridge Resonant Controller | onsemi
MPN： NCP1399APDR2G ✓ 啟用中NCP1399APDR2G 概覽
An LLC resonant controller is a specialized power-supply control IC that drives a half-bridge switching stage whose switches feed an LC resonant tank. The tank shapes the current waveform so the MOSFETs switch at zero voltage (ZVS), eliminating switching losses and enabling high-frequency, high-density designs. Controllers such as the NCP1399APDR2G sit within the power-management IC family and are commonly deployed as the secondary-side controller after a PFC front end in TV power supplies, server PSUs, and industrial SMPS modules.
Key features of the NCP1399APDR2G include integrated 600 V half-bridge gate drivers that simplify PCB layout and reduce the bill of materials, an adjustable minimum switching frequency with precise dead-time generation, dedicated PFC control output for coordinated front-stage operation, brown-out protection on the high-voltage bulk rail, and comprehensive fault protection (overcurrent, overtemperature, overload, and brown-out). According to the onsemi NCP1399 datasheet, the device also features a skip-mode function for light-load efficiency improvement.
Architecturally, the NCP1399APDR2G uses a current-mode control loop with a dedicated feedback input, allowing tight regulation of the resonant tank current. The adaptive dead-time block automatically adjusts the dead time between the high-side and low-side gate drive transitions to minimize body-diode conduction and maximize the ZVS range. The 600 V high-side driver is implemented using a level-shifter with an internal bootstrap clamp, removing the need for an external bootstrap diode in many designs.
Typical applications include LCD TV power supplies (>150 W), notebook and laptop adapters, server and telecom SMPS modules, industrial LED drivers, and any high-density isolated DC-DC converter requiring ZVS operation above 100 W. The dedicated PFC output makes it an ideal match for designs requiring energy compliance such as 80 PLUS or ENERGY STAR.
When designing with the NCP1399APDR2G, ensure the high-voltage bulk rail is decoupled with at least 1 µF X7R close to the Vbulk pin and follow the PCB layout guidelines for the high-side driver return path. The integrated 600 V drivers eliminate the need for an external gate-drive transformer, but the bootstrap capacitor must be sized correctly for the switching frequency and gate charge of the chosen MOSFETs.
This page synthesizes distributor pricing, drop-in alternative recommendations, and practical design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 NCP1399APDR2G — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： NCP1399APDR2G （相同外形與佔位） — 差異在於 Overcurrent Protection, PFC Interface, Package, Topology.
NCP1399BPDR2G
✅ 直接替換📋 參考替代品（不在目錄中）
NCP1399APDR2G
✅ 直接替換聯絡詢價
查看資料表 →NCP1399A
✅ 直接替換📋 參考替代品（不在目錄中）
NCP1397BDR2G
✅ 直接替換📋 參考替代品（不在目錄中）
L6599DTR
✅ 直接替換聯絡詢價
查看資料表 →LLC1
✅ 直接替換📋 參考替代品（不在目錄中）
NCP1399APDR2G 最大額定值與電氣特性
| 拓撲 | Half-Bridge Resonant (LLC) |
| Control Mode | Current Mode |
| Switching Frequency Range | 20 kHz to 750 kHz |
| Integrated Gate Drivers | 2 x 600 V half-bridge |
| 封裝 | 16-SOIC (Pb-free) |
| 安裝類型 | Surface Mount |
| PFC Interface | Yes, dedicated output |
| Brown-Out Protection | Yes (built-in) |
| 過電流保護 | Yes |
| Overtemperature Protection | Yes |
| Dead-Time Control | Adaptive, auto-adjusting |
| Light-Load Mode | Skip-mode function |
| High-Side Driver Type | Bootstrap with internal clamp |
| 工作溫度範圍 | -40 C to +125 C |
| MSL 等級 | 1 |
| RoHS 狀態 | Compliant |
| Lead-Free | Yes |
NCP1399APDR2G 腳位配置
| 腳位 1 | LV — Low-voltage ground return |
| 腳位 2 | Vbulk — Bulk voltage sense input (brown-out) |
| 腳位 3 | PFC — PFC front-stage control output |
| 腳位 4 | FMAX — Maximum frequency setting |
| 腳位 5 | FB — Feedback input from optocoupler |
| 腳位 6 | CT — Timing capacitor for oscillator |
| 腳位 7 | RT — Timing resistor for oscillator |
| 腳位 8 | DT — Dead-time programming |
| 腳位 9 | VCC — Low-voltage supply (12V typical) |
| 腳位 10 | GND — Power ground |
| 腳位 11 | LDRV — Low-side gate driver output |
| 腳位 12 | PGND — Power ground return for low-side driver |
| 腳位 13 | HDRV — High-side gate driver output |
| 腳位 14 | HB — High-side bootstrap supply |
| 腳位 15 | HS — High-side driver return |
| 腳位 16 | BO — Brown-out/protection input |
典型應用
NCP1399APDR2G 適用於 6 應用s: LCD TV Power Supply (>150 W), Server & Telecom SMPS Module, Industrial High-Power Adapter, LED Driver Power Stage, Isolated DC-DC Bus Converter, Audio Amplifier SMPS.
LCD TV Power Supply (>150 W)
The NCP1399APDR2G is widely deployed in LCD TV power supplies above 150 W where high efficiency and ZVS operation are required. The integrated 600 V gate drivers and 20-750 kHz switching range allow direct connection to the rectified 390 V bulk rail without external level-shifting. Its dedicated PFC output coordinates seamlessly with a front-stage PFC controller for ENERGY STAR compliance. The adaptive dead-time control maintains ZVS across load transitions, minimizing switching losses in the half-bridge MOSFETs and improving thermal performance in slim TV chassis where heatsinking is constrained.
推薦
Server & Telecom SMPS Module
In server and telecom SMPS modules running from a 380-400 V DC bus, the NCP1399APDR2G's 600 V integrated drivers tolerate bulk-rail transients and the 750 kHz max frequency enables high-density magnetics. Current-mode control provides tight regulation across wide load steps typical of CPU/Memory VRMs. The brown-out function protects downstream DC-DC stages from low-bulk conditions, and the skip-mode function maintains 80 PLUS efficiency at light loads (10-20% load). The 16-SOIC package and small footprint suit the high component density of 1U/2U server PSUs.
推薦
Industrial High-Power Adapter
For industrial adapters above 200 W, the NCP1399APDR2G enables a compact LLC topology with primary-side regulation. The current-mode control loop and dedicated PFC interface support universal AC input (90-264 VAC) designs with active PFC for IEC 61000-3-2 compliance. The integrated 600 V drivers reduce component count compared to designs using external gate-drive transformers, improving MTBF. Overcurrent and overtemperature protection circuits safeguard the adapter under fault conditions such as output short circuits or fan failure.
推薦
LED Driver Power Stage
High-bay industrial LED drivers above 100 W benefit from the NCP1399APDR2G's LLC topology because ZVS switching minimizes EMI and enables dimming compatibility. The wide 20-750 kHz frequency range accommodates different resonant tank designs for various LED current/voltage combinations. The skip-mode function reduces light-load losses, important for drivers that spend significant time in standby. According to the onsemi datasheet, the brown-out and overload protection features isolate LED string faults without latching the entire supply.
推薦
Isolated DC-DC Bus Converter
In 48 V to 12 V or 380 V to 48 V isolated bus converters for telecom and datacom, the NCP1399APDR2G drives the primary-side half-bridge with 600 V rating, comfortably handling 380-400 V rectified bus voltages. Current-mode control provides fast transient response for dynamic CPU loads. The adaptive dead-time feature maximizes efficiency across the wide load range typical of bus converters (10% to 100% load). The 16-SOIC footprint allows compact PCB designs in quarter-brick and eighth-brick form factors.
推薦
Audio Amplifier SMPS
Class-D audio amplifiers and high-power professional audio equipment use the NCP1399APDR2G in their LLC SMPS to deliver clean, high-current rails. The ZVS operation eliminates switching noise that could otherwise couple into the audio band. Current-mode control provides tight regulation even with the rapidly varying loads characteristic of audio amplification. The integrated 600 V gate drivers and PFC interface simplify the design of 500 W+ audio amplifiers requiring 80 PLUS-class efficiency at idle.
推薦
推薦產品摘要
工程參考資料，適用於 NCP1399APDR2G — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | NCP1399BPDR2G | NCP1399A | NCP1397BDR2G | L6599DTR |
|---|---|---|---|---|---|
| Brand | onsemi | onsemi | onsemi | onsemi | STMicroelectronics |
| Package | 16-SOIC | 16-SOIC - same | 16-SOIC - same | 16-SOIC - same | 16-SOIC - same |
| Switching Frequency Range | 20 kHz to 750 kHz | 20 kHz to 750 kHz | 20 kHz to 750 kHz | Up to ~500 kHz | Up to ~500 kHz |
| Integrated Gate Driver Voltage | 600 V | 600 V | 600 V | 600 V | 600 V |
| Topology | Half-Bridge LLC Resonant | Half-Bridge LLC | Half-Bridge LLC | Half-Bridge LLC | Half-Bridge LLC |
| PFC Interface | Yes | Yes | Yes | No | No |
| Brown-Out Protection | Yes (built-in) | Yes | Yes | Yes | Yes |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +150 C |
| RoHS Compliance | Compliant | Compliant | Compliant | Compliant | Compliant |
主要差異化特點
- Wider switching frequency range than predecessors (對比NCP1397BDR2G)
- Dedicated PFC interface output (對比L6599DTR)
- Integrated 600 V gate drivers eliminate external components (對比Discrete gate-drive transformer design)
設計說明
According to the onsemi NCP1399 datasheet, the high-side gate driver return (HS pin) and the HB bootstrap capacitor must be kept as short and tight as possible. The high-side loop (HDRV-HS-HB) carries fast-switching currents with 600 V amplitude; traces should be kept under 5 mm in length and the bootstrap capacitor (typically 100 nF X7R) should be placed within 3 mm of the HB and HS pins. Improper layout here causes voltage spikes that can exceed the 600 V rating of the integrated driver and cause catastrophic failure.
The NCP1399APDR2G in 16-SOIC has a thermal resistance of approximately 80-100 C/W (theta_JA). At 750 kHz switching with both drivers active, gate-drive losses are typically 50-100 mW which is well within thermal limits. However, if the part is co-located with power MOSFETs on the same copper pour, the ambient temperature rise must be considered. Ensure at least 1 square inch of copper on the GND/PGND pins to spread heat and keep junction rise below 30 C.
Do not omit the bootstrap capacitor (HB to HS). The integrated 600 V driver requires this capacitor to supply the high-side gate charge; without it the high-side MOSFET will not switch and the LLC tank will fail to resonate. According to onsemi, the bootstrap capacitor must be at least 100 nF X7R rated for 25 V or higher. Also, do not exceed Vbulk of 600 V - the part's integrated drivers do not extend beyond this rating even transiently.
Place the Vbulk sense filter (typically 10 kohm + 100 nF RC) within 5 mm of the Vbulk pin to prevent switching noise from causing false brown-out trips. The feedback (FB) compensation network should use a small ground-return trace to the LV pin to avoid ground loops. Decouple VCC with 1 uF + 100 nF X7R placed as close to the VCC/GND pins as possible.
合規資訊
RoHS compliant per DigiKey listing and onsemi product page. AEC-Q100 not applicable for non-automotive SMPS controllers. REACH status not explicitly stated in verified data.
