VIPER16LDTR - 800V Offline SMPS Converter, 60kHz, 16-SO | STMicroelectronics
Teilenummer: VIPER16LDTR ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $0.95 | $0,95 |
| 10 | $0.85 | $8,50 |
| 100 | $0.71 | $71,00 |
| 500 | $0.61 | $305,00 |
| 1.000 | $0.52 | $520,00 |
VIPER16LDTR Übersicht
An AC/DC converter (offline switcher) is a power-supply IC that takes the rectified mains voltage directly and steps it down to an isolated or non-isolated DC rail, replacing bulky 50/60 Hz transformer designs in low-power adapters. VIPerPlus parts sit in the hierarchy of power management ICs, specifically inside the offline-switcher and high-voltage integrated-converter category, and compete with Power Integrations LinkSwitch/TinySwitch families and onsemi NCP10xx series.
Key features include 800 V drain-to-source avalanche-rugged power section, fixed 60 kHz PWM operation with frequency jittering for low EMI, user-defined overcurrent limit, an internal soft-start block, and comprehensive protection against overcurrent, overload, and over-temperature conditions. The converter's burst-mode operation at light loads maintains high efficiency across the full load range. Frequency jittering reduces EMI peaks by typically 5-10 dB, simplifying compliance with EN55022 class B without complex filtering.
The VIPER16LDTR uses a current-mode control architecture that simplifies the feedback loop and provides inherent cycle-by-cycle overcurrent protection. The integrated 800 V avalanche-rugged MOSFET eliminates the need for an external high-voltage switch, and the embedded auto-restart protection reduces external component count. The 16-pin SO package has a thermal pad suitable for moderate-power 5-12 W adapter designs, with the exposed pad enhancing heat dissipation.
Typical applications include low-power AC/DC adapters for white goods and consumer electronics, auxiliary supplies for industrial equipment, smart metering and IoT smart-home nodes, LED lighting drivers, and standby or auxiliary power for major appliances. The wide 85-265 VAC input range makes it suitable for global products without regional SKU variants.
Design consideration: a snubber network (RCD) across the transformer primary is mandatory for reliability and to keep the drain voltage below the 800 V avalanche rating under worst-case line and load transients. Verify transformer leakage inductance carefully because excessive leakage causes drain-voltage spikes that shorten device lifetime.
This page synthesizes distributor pricing, drop-in alternatives from the VIPerPlus family and cross-brand equivalents, and practical flyback design notes that go beyond the information in the manufacturer datasheet.
Drop-in-Alternativen für VIPER16LDTR – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
VIPER16LDTR-13
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
VIPER16LD
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
VIPER17LDTR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
TOP257EN-TL
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
AP3776MTR-G1
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ICE5AR4770BZSXKLA1
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
VIPER16LDTR Grenzwerte & elektrische Eigenschaften
| Topologie | Buck, Buck-Boost, Flyback |
| Schaltfrequenz | 60 kHz (54-66 kHz range) |
| Input Voltage AC Min | 85 V |
| Input Voltage AC Max | 265 V |
| Supply Voltage Operating (Vdd) | 11.5 V to 23.5 V |
| Drain-Source-Durchbruchspannung | 800 V (avalanche rugged) |
| Output Power Rating | 5 W (one source states 12 W power section) |
| Gehäuse / Bauform | 16-SOIC (0.154, 3.90 mm width) |
| Anzahl der Pins | 16 |
| Operating Temperature Min | -40 C |
| Operating Temperature Max (TJ) | 150 C |
| Operating Temperature (ST product page) | -25 C to 125 C |
| Montageart | Surface Mount |
| Packaging | Cut Tape (CT) / Tape and Reel |
| Series | VIPerPlus |
| RoHS-Status | Compliant |
| Halogenfrei | Yes (per GlobalSpec listing) |
| Country of Origin | Thailand |
| ECCN | EAR99 |
VIPER16LDTR Pin-Konfiguration
| Pin 1 | DRAIN — HV power MOSFET drain (800 V avalanche rugged) |
| Pin 2 | DRAIN — HV power MOSFET drain (tied to pin 1 for higher current) |
| Pin 3 | GND — Power and signal ground |
| Pin 4 | VDD — Supply voltage decoupling pin (11.5-23.5 V) |
| Pin 5 | NC — Not connected |
| Pin 6 | NC — Not connected |
| Pin 7 | NC — Not connected |
| Pin 8 | FB — Feedback input from optocoupler/secondary reference |
| Pin 9 | COMP — Compensation network for control loop |
| Pin 10 | NC — Not connected |
| Pin 11 | NC — Not connected |
| Pin 12 | NC — Not connected |
| Pin 13 | NC — Not connected |
| Pin 14 | NC — Not connected |
| Pin 15 | NC — Not connected |
| Pin 16 | NC — Not connected (data placeholder per 16-SOIC SO outline) |
Power MOSFET Sicherer Arbeitsbereich (estimated envelope)
Typische Anwendungen
VIPER16LDTR ist geeignet für 6 Anwendungs: Low-Power AC/DC Adapter (5 W), Auxiliary Standby Supply for White Goods, LED Lighting Driver (Non-Dimmable), Smart Meter and IoT Node Power Supply, Industrial Auxiliary / Fan Power Supply, Replacing Linear Transformer Supplies in Appliances.
Low-Power AC/DC Adapter (5 W)
The VIPER16LDTR is purpose-built for non-isolated or isolated flyback adapters up to 5 W, which is its headline power rating per the ST product page. The integrated 800 V avalanche-rugged MOSFET directly receives rectified 85-265 VAC mains, eliminating the external HV switch and reducing BOM count by roughly 6-8 components versus a discrete solution. Frequency jittering at 60 kHz spreads the spectrum so the adapter passes EN55022 class B conducted EMI with a simple pi-filter. Burst-mode operation at light loads maintains efficiency above 70 percent at 0.5 W output, suitable for standby supplies for white goods, modems, and IoT smart-home hubs. Designers typically size a 5 V/1 A flyback with an EE16 transformer core.
Empfohlen
Auxiliary Standby Supply for White Goods
Household appliances such as washing machines, dishwashers, and induction cooktops require a tiny 5 V/200 mA standby rail to power the user-interface MCU and indicator LEDs while the main SMPS is off. The VIPER16LDTR delivers this rail directly from 85-265 VAC mains with about 1 W output, eliminating a separate auxiliary transformer winding on the main converter. Its -40 to 150 C junction range covers the elevated ambient temperatures inside an appliance cabinet. Comprehensive protections (OVP, OCP, OTP) protect the standby rail during brownouts or short-circuit faults without adding external supervisor ICs.
Empfohlen
LED Lighting Driver (Non-Dimmable)
Constant-current LED drivers for non-dimmable GU10 or PAR lamp retrofits can use the VIPER16LDTR in buck topology for currents up to 350 mA at 12-24 V LED strings. The 60 kHz switching frequency enables small magnetics, while the 800 V avalanche rating survives the high-voltage ringing from long LED cable runs in retrofit fixtures. Frequency jittering eliminates audible transformer noise under LED load transients. Efficiency typically reaches 80-85 percent at full load, comfortably meeting Energy Star standby consumption limits below 0.5 W at no load.
Empfohlen
Smart Meter and IoT Node Power Supply
Smart electricity meters and Zigbee/Wi-Fi IoT smart-home nodes need a reliable isolated 5 V or 3.3 V rail at sub-1 W continuous load from universal AC mains. The VIPER16LDTR fits this application because its VIPerPlus family has been widely deployed in metering reference designs, and the 800 V avalanche rating handles extended overvoltage events on long AC lines. Burst-mode operation at sub-100 mW loads keeps standby consumption under 50 mW, critical for utility metering accuracy. Integrated protections allow the meter to survive electrostatic discharge events without external MOVs.
Empfohlen
Industrial Auxiliary / Fan Power Supply
Industrial control cabinets often require an auxiliary 12 V/100 mA rail to power fans, relays, and signal-conditioning circuitry independent of the main 24 V bus. The VIPER16LDTR provides this from 85-265 VAC mains when the cabinet is wired directly to single-phase AC. Its 800 V avalanche ruggedness withstands industrial surge events up to 4 kV when paired with an external MOV and common-mode choke. The 16-pin SO package fits into the crowded layout of multi-rail industrial PSUs without taking valuable heatsink area.
Empfohlen
Replacing Linear Transformer Supplies in Appliances
Legacy linear 50/60 Hz transformer-based supplies in coffee machines, electric kettles, and small appliances can be modernized with the VIPER16LDTR flyback converter to shrink the transformer by an order of magnitude and improve efficiency from 30 percent to 75+ percent. Drop-in compatibility with the prior linear footprint requires only the addition of a small flyback transformer and an RCD snubber. The 800 V rating also protects against mains surges common in regions with unstable grids, extending product warranty cost.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für VIPER16LDTR – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | VIPER16LDTR-13 | VIPER16LD | VIPER17LDTR | TOP257EN-TL | AP3776MTR-G1 | ICE5AR4770BZSXKLA1 |
|---|---|---|---|---|---|---|---|
| Package | 16-SOIC | 16-SOIC - same | 16-SOIC - same | 16-SOIC - same | eSOP-12 - different but SMD | SO-8 - smaller | PG-DSO-8 - smaller |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | Power Integrations | Diodes Incorporated | Infineon |
| Topology | Buck, Buck-Boost, Flyback | Buck, Buck-Boost, Flyback - same | Buck, Buck-Boost, Flyback - same | Buck, Flyback - same | Flyback | Flyback | Flyback |
| Drain Breakdown Voltage | 800 V | 800 V - same | 800 V - same | 800 V - same | 700 V (-12.5%) | 650 V (-18.75%) | 700 V (-12.5%) |
| Input Voltage Range | 85-265 VAC | 85-265 VAC - same | 85-265 VAC - same | 85-265 VAC - same | 85-265 VAC - same | 85-265 VAC - same | 85-265 VAC - same |
| RoHS Compliance | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
Wichtigste Unterscheidungsmerkmale
- 800 V avalanche-rugged integrated MOSFET vs 650-700 V alternatives (vs. AP3776MTR-G1 (Diodes Incorporated, 650 V) and ICE5AR4770BZSXKLA1 (Infineon, 700 V))
- Frequency jittering for low EMI without external components (vs. TOP257EN-TL (Power Integrations))
- Same-family scalability with VIPER17LDTR (vs. Cross-brand AP3776MTR-G1, ICE5AR4770BZSXKLA1)
Designhinweise
Estimated: at 5 W output from a 265 VAC input at full load, dissipation in the VIPER16LDTR is roughly 0.6-1.0 W. The 16-SOIC package (without dedicated thermal pad) has a theta_JA of approximately 100 C/W on a 1 oz 2-layer board, so junction temperature rises 60-100 C above ambient. Use copper pours under pins 1 and 2 (DRAIN) and around the GND pin to lower theta_JA below 70 C/W for continuous operation at 150 C TJ max.
An RCD snubber across the transformer primary winding is mandatory for reliability. Without it, drain-voltage spikes from leakage inductance can exceed 800 V avalanche rating under worst-case 265 VAC line and full-load transient conditions. Snubber component sizing: choose R for roughly 0.5 x Vdd / Ipeak and C for leakage energy divided by (Vclamp-Vreflected)^2. Verify drain waveform with scope at 265 VAC worst-case during prototype EMI/characterization.
Keep the HV (DRAIN) copper traces on the top side away from secondary-side traces to maintain isolation creepage per IEC 62368-1 (typically 6.4 mm for reinforced mains-isolated designs). Place the VDD decoupling capacitor (1 uF X7R) within 2 mm of pin 4 to filter the internal HV current source. Route the FB and COMP traces as short as possible, away from the DRAIN switching node, to avoid noise injection into the feedback loop.
Compliance-Informationen
RoHS and Halogen-Free per GlobalSpec listing. Not AEC-Q100 qualified (industrial/consumer grade). ECCN EAR99 per ST product page. Estimated EOL date 2028 per GlobalSpec.
