NCP1399APDR2G - 600V Half-Bridge Resonant Controller | onsemi
N.º da peça: NCP1399APDR2G ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.13 | $2,13 |
| 10 | $1.85 | $18,50 |
| 100 | $1.52 | $152,00 |
| 500 | $1.21 | $605,00 |
| 1.000 | $0.99 | $990,00 |
NCP1399APDR2G Visão geral
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.
Alternativas drop-in para NCP1399APDR2G — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com NCP1399APDR2G (mesmo formato e footprint) — diferindo em Overcurrent Protection, PFC Interface, Package, Topology.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
NCP1399BPDR2G
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
NCP1399APDR2G
✅ Drop-In✓ Em estoque
$0.99 / unidade
Ver ficha técnica →NCP1399A
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
NCP1397BDR2G
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
L6599DTR
✅ Drop-In✓ Em estoque
$1.55 / unidade
Ver ficha técnica →LLC1
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
NCP1399APDR2G Classificações máximas e características elétricas
| Topologia | 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 |
| Encapsulamento | 16-SOIC (Pb-free) |
| Tipo de montagem | Surface Mount |
| PFC Interface | Yes, dedicated output |
| Brown-Out Protection | Yes (built-in) |
| Proteção contra sobrecorrente | Yes |
| Overtemperature Protection | Yes |
| Dead-Time Control | Adaptive, auto-adjusting |
| Light-Load Mode | Skip-mode function |
| High-Side Driver Type | Bootstrap with internal clamp |
| Faixa de temperatura de operação | -40 C to +125 C |
| Nível MSL | 1 |
| Status RoHS | Compliant |
| Lead-Free | Yes |
Configuração de pinos do NCP1399APDR2G
| Pino 1 | LV — Low-voltage ground return |
| Pino 2 | Vbulk — Bulk voltage sense input (brown-out) |
| Pino 3 | PFC — PFC front-stage control output |
| Pino 4 | FMAX — Maximum frequency setting |
| Pino 5 | FB — Feedback input from optocoupler |
| Pino 6 | CT — Timing capacitor for oscillator |
| Pino 7 | RT — Timing resistor for oscillator |
| Pino 8 | DT — Dead-time programming |
| Pino 9 | VCC — Low-voltage supply (12V typical) |
| Pino 10 | GND — Power ground |
| Pino 11 | LDRV — Low-side gate driver output |
| Pino 12 | PGND — Power ground return for low-side driver |
| Pino 13 | HDRV — High-side gate driver output |
| Pino 14 | HB — High-side bootstrap supply |
| Pino 15 | HS — High-side driver return |
| Pino 16 | BO — Brown-out/protection input |
Aplicações típicas
NCP1399APDR2G é adequado para 6 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para NCP1399APDR2G — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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 |
Principais diferenciais
- Wider switching frequency range than predecessors (vs NCP1397BDR2G)
- Dedicated PFC interface output (vs L6599DTR)
- Integrated 600 V gate drivers eliminate external components (vs Discrete gate-drive transformer design)
Notas de projeto
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.
Informações de conformidade
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.
