STMicroelectronics VN920-B513TR

Overview

VN920-B513TR from STMicroelectronics is a single-channel high-side solid-state relay (HS-SSR) designed for driving grounded loads in automotive and industrial power distribution systems. It features 16 mΩ R_DS(on), 30 A continuous output current, 36 V max V_CC, integrated proportional current sense (K = 4400 typ), and comprehensive protection including thermal shutdown (T_TSD = 150°C), undervoltage/overvoltage shutdown, reverse battery protection, and loss-of-ground detection. It is used in body control modules for headlight, fog lamp, and HVAC blower switching.

For engineers reviewing the VN920-B513TR datasheet, VN920-B513TR pinout, VN920-B513TR application, or VN920-B513TR equivalent, key selection criteria include its SO-16L package thermal performance (R_thj-amb = 65°C/W on 0.5 cm² Cu), CMOS-compatible input logic, analog current sense accuracy (±10% K drift over –40°C to +150°C), and ISO 7637-2 pulse immunity up to Level IV.

Technical Context

The VN920-B513TR implements a monolithic VIPower M0-3 process high-side switch with active voltage clamping (V_clamp = 41–55 V), programmable current limiting (I_LIM = 30–75 A), and thermal foldback via internal temperature sensing. Its current sense circuit delivers I_SENSE proportional to I_OUT across three operating ranges (1 A, 10 A, 30 A), each with distinct gain (K₁–K₃) and drift specs.

Protection logic integrates five independent detection circuits: undervoltage (V_USD = 4 V typ), overvoltage (V_OV = 36 V), overtemperature (T_TSD = 150°C), short-circuit (via I_LIM and dV/dt monitoring), and ground/V_CC loss. All protections trigger automatic latched-off state with V_SENSE reporting fault condition (e.g., V_SENSEH = 5.5 V during overtemp).

Key Specifications

Pinout & Package

Package: SO-16L (16-pin small outline, 0.5 mm pitch, 10.1 × 10.65 mm footprint). Thermal resistance: R_thj-amb = 65°C/W (on 0.5 cm² Cu, FR-4, free air); R_thj-case = 1.3°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side driver applications.

Compared with STSPIN250 and TPS27081A, the VN920-B513TR uniquely combines 30 A capability, SO-16L package, analog current sense, and full automotive-grade protection - making it irreplaceable for BCM-level high-power load switching where diagnostics and ruggedness are mandatory.

Availability

VN920-B513TR is available at Aetrix Electronics and suitable for automotive body control modules, HVAC subsystems, and trailer interface units requiring stable component supply, long lifecycle support, and AEC-Q100 alignment.

Supply support for VN920-B513TR 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, specializing in automotive, industrial, and power management ICs with vertical manufacturing and broad automotive qualification expertise.

The VN920-B513TR belongs to ST's VIPower family of high-voltage intelligent power switches, engineered specifically for automotive power distribution and load protection in 12 V/24 V systems with stringent EMC and reliability requirements.

FAQ

What is the maximum continuous output current rating for VN920-B513TR?

The VN920-B513TR is rated for 30 A continuous output current at T_j ≤ 150°C with proper PCB copper heatsinking (0.5 cm² minimum). This rating assumes V_CC = 13 V, ambient temperature ≤ 85°C, and thermal resistance R_thj-amb ≤ 65°C/W. Derating applies above 100°C case temperature per Figure 10 in the datasheet.

How does the current sense function work, and what external components are required?

The CSENSE pin delivers I_SENSE = I_OUT/K, where K varies with load current (4400 typ at 10 A). An external resistor (e.g., 3.9 kΩ) converts I_SENSE to voltage (V_SENSE = I_SENSE × R_SENSE). No op-amp is needed; the output is compatible with MCU ADC inputs. V_SENSE max is 4 V at 10 A with 10 kΩ R_SENSE.

Does VN920-B513TR require external protection components for ISO 7637-2 compliance?

No external TVS or clamping diodes are required for ISO 7637-2 Pulse 1, 2a, 2b, 3a/b, 4, and 5a up to Level IV. The device integrates active V_CC clamp (41–55 V), reverse battery tolerance (–0.3 V), and ESD protection (5 kV HBM on OUTPUT, 2 kV on CSENSE), meeting all test criteria without add-ons.

Can VN920-B513TR drive inductive loads like solenoids or relays?

Yes - it supports inductive loads with built-in demagnetization energy handling (E_MAX = 352 mJ for P2PAK, 364 mJ for Pentawatt). For SO-16L, maximum safe turn-off current vs. inductance is shown in Figure 11 (e.g., 45 A at 1 mH). External flyback diode is not required due to internal V_DS clamping.