STMicroelectronics STIPNS2M50-H

Overview

STIPNS2M50-H from STMicroelectronics is a SLLIMM-nano intelligent power module (IPM) integrating six 500 V, 2 A MOSFETs and three half-bridge HVIC gate drivers in a single NSDIP-26L package. It delivers a complete 3-phase inverter bridge with embedded op-amp, comparator-based overcurrent protection, undervoltage lockout, interlocking logic, and internal bootstrap diodes - designed for compact, low-EMI motor drives in appliances like refrigerator fans and air-conditioning blowers.

For engineers reviewing the STIPNS2M50-H datasheet, STIPNS2M50-H pinout, STIPNS2M50-H application, or STIPNS2M50-H equivalent, this IPM offers verified 1.7 Ω max R_DS(on), 500 V blocking voltage, integrated current sensing via CIN/OP+–OP–/OPOUT, and dual-function SD/OD pin supporting both shutdown input and fault output - critical for fast-fault response in space-constrained BLDC inverter designs.

Technical Context

The STIPNS2M50-H implements a fully integrated 3-phase inverter architecture with independent U/V/W half-bridge gate drivers, each featuring high-side and low-side logic inputs (HIN/LIN), bootstrap voltage terminals (VBOOT), and dedicated VCC supplies. Its control section includes a rail-to-rail op-amp (±14.7 V output swing, 3.8 V/µs slew rate) and a comparator with 0.54 V internal reference, enabling precise shunt-based current monitoring without external references.

Protection is implemented at the silicon level: undervoltage lockout on both VCC (12 V turn-on threshold) and VBOOT (11.5 V turn-on), 180 ns hardware dead-time generation, interlocking logic to prevent shoot-through, and open-drain SD/OD pin that directly disables U-phase outputs upon fault detection while propagating shutdown to V/W phases via external RC timing - ensuring coordinated, fail-safe tri-state behavior.

Key Specifications

Pinout & Package

STIPNS2M50-H uses the NSDIP-26L surface-mount package (29.2 mm × 12.55 mm × 3.2 mm), moisture sensitivity level (MSL) 3, optimized for thermal dissipation and board layout simplicity in built-in motor modules. The package features 26 leads with one dummy pin (Pin #17 internally connected to P) and exposed thermal pad on underside.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3-phase inverter applications.

Compared with FSTB2050 and FSBB20CH60C, STIPNS2M50-H uniquely combines compact NSDIP-26L packaging, integrated analog sensing (op-amp + comparator), and dual-mode SD/OD for both control and diagnostics - making it optimal for consumer appliance inverters where size, reliability, and fast fault response are prioritized over raw power rating.

Availability

STIPNS2M50-H is available at Aetrix Electronics and suitable for refrigerator fan drives, air-conditioning blowers, dishwasher drain pumps, and roller shutter motor controllers requiring stable component supply across extended production lifecycles.

Supply support for STIPNS2M50-H 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 microcontrollers, power ICs, sensors, and analog devices for automotive, industrial, and consumer markets.

STIPNS2M50-H belongs to the SLLIMM-nano intelligent power module family, engineered specifically for compact, high-efficiency 3-phase BLDC motor drives in white goods and building automation - emphasizing integration, thermal robustness, and EMI compliance in space-constrained modules.

FAQ

What is the maximum recommended DC bus voltage for STIPNS2M50-H?

The datasheet specifies a recommended operating supply voltage (V_PN) of 300–400 V applied between P and N_U/N_V/N_W. While the absolute maximum V_DSS is 500 V, sustained operation above 400 V risks exceeding thermal limits under load and violates the manufacturer's validated operating conditions - thus 400 V is the practical upper limit for reliable 2 A continuous operation.

How does the SD/OD pin function in shutdown versus fault-reporting mode?

When driven low (≤0.8 V), SD/OD acts as an active-low shutdown input disabling all three half-bridges. When left floating or pulled high, it functions as an open-drain fault output: during overcurrent detection on the U-phase, it pulls low immediately; for V/W faults, it responds after external RC delay (per AN4966). Internal pull-down ensures safe default state.

Can the integrated op-amp be used for voltage sensing instead of current sensing?

Yes - the op-amp is uncommitted and rail-to-rail, with input common-mode range extending to V_CC − 0.3 V. It can configure as a unity-gain buffer for DC-link voltage monitoring or as an inverting amplifier for isolated feedback, provided input signals remain within −0.3 V to V_CC + 0.3 V and source impedance stays below 10 kΩ to avoid offset drift.

Is external bootstrap diode required for STIPNS2M50-H?

No - the device integrates internal bootstrap diodes for all three phases (U/V/W), confirmed in Section 1 Features and Figure 1 schematic. External diodes are unnecessary and would conflict with internal routing; only ceramic bootstrap capacitors (C_bootU/C_bootV/C_bootW) placed near respective VBOOT pins are required per datasheet guidelines.