STMicroelectronics EVLVIP37LE5V3A

Overview

EVLVIP37LE5V3A from STMicroelectronics is a fixed-frequency offline AC-DC converter IC integrating an 800 V avalanche-rugged N-channel power MOSFET, current-mode PWM controller, dual overcurrent protection (OCP), output overvoltage protection (OVP), brownout detection, hysteretic thermal shutdown, and onboard soft-start. It delivers up to 15 W in open-frame designs and 13 W in enclosed adapters at 85–265 V_AC, with 30 mW standby power at 265 V_AC, targeting auxiliary power supplies for consumer electronics.

For engineers reviewing the EVLVIP37LE5V3A datasheet, EVLVIP37LE5V3A pinout, EVLVIP37LE5V3A application, or EVLVIP37LE5V3A equivalent, this device is selected for ultra-wide-input AC-DC flyback converters requiring integrated high-voltage switching, low-noise burst-mode operation, and robust fault recovery - especially where board space, EMI filtering cost, and regulatory standby compliance are critical.

Technical Context

The VIPER37LE operates in current-mode PWM with adjustable cycle-by-cycle current limit via the CONT pin and includes a second-level OCP (hiccup mode) triggered at 1.7 A drain current. Its oscillator runs at 60 kHz (L-type) with ±4 kHz frequency jittering to reduce EMI peak emissions.

Brownout protection activates when BR pin voltage falls below 0.45 V (typ.), disabling switching until voltage rises above 0.50 V; thermal shutdown engages at 155 °C (typ.) with 30 °C hysteresis. The internal HV startup circuit draws current directly from the DRAIN pin, eliminating external startup resistors.

Key Specifications

Pinout & Package

Package: SDIP10 (10-pin shrink dual in-line package with exposed DRAIN pads for thermal dissipation).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar offline flyback controller applications.

Compared with ICE3B0565J and LNK364PG, EVLVIP37LE5V3A uniquely integrates brownout detection, dual OCP, and jittered 60 kHz operation in SDIP10 - enabling simpler, more robust, and EMI-optimized designs for universal-input auxiliary supplies under 15 W.

Availability

EVLVIP37LE5V3A is available at Aetrix Electronics and suitable for set-top box auxiliary supplies, DVD recorder primary SMPS, and ATX standby power supplies requiring stable component supply, long-term lifecycle support, and full production traceability.

Supply support for EVLVIP37LE5V3A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

EVLVIP37LE5V3A belongs to the VIPerPlus family of integrated offline converters - engineered specifically for cost-sensitive, space-constrained AC-DC applications demanding high integration, low standby power, and robust protection without external components.

FAQ

What is the maximum continuous output power achievable with EVLVIP37LE5V3A in an open-frame design?

EVLVIP37LE5V3A delivers up to 15 W continuous output power in open-frame configurations at 50 °C ambient temperature with adequate heatsinking, as confirmed in Table 2 of the official datasheet (DocID022218 Rev 3). This rating assumes proper PCB copper area under DRAIN pins and optimized transformer design per Figure 21.

How does the CONT pin function in current limit adjustment?

The CONT pin sets the cycle-by-cycle overcurrent threshold: connecting it to GND via a resistor lowers the default 1.0 A (typ.) limit proportionally - e.g., a 10 kΩ resistor reduces it to ~0.7 A. The pin also enables OVP shutdown when FB voltage exceeds 3.0 V, with digital strobing and noise filtering for immunity.

Can EVLVIP37LE5V3A operate without an auxiliary winding?

Yes - its integrated high-voltage startup circuit draws charging current directly from the DRAIN pin, allowing full operation without an auxiliary winding. The VDD capacitor is charged during startup, and once regulation begins, self-supply may be maintained solely via DRAIN-derived energy in minimal-feature designs.

What thermal derating applies above 60 °C ambient?

Per Table 5, the SDIP10 package has R_thJA = 85 °C/W on standard FR4. At T_A > 60 °C, power dissipation must be linearly reduced: P_D(T_A) = 1.5 W × (1 − (T_A − 60)/90). Junction temperature must remain ≤150 °C; thermal shutdown activates at 155 °C with 30 °C hysteresis.