STMicroelectronics VN770P13TR

Overview

VN770P13TR from STMicroelectronics is a quad-channel smart power solid-state relay in SO-28 package, integrating two VIPower high-side switches and two OMNIFET low-side switches for complete H-bridge motor control. It delivers R_DS(on) = 0.13 Ω (high-side) and 0.07 Ω (low-side), supports 9 A continuous output, operates up to 26 V V_CC, and features linear current limiting, thermal shutdown at 140 °C, and open-load diagnostics - enabling robust DC motor drive in automotive body electronics.

For engineers reviewing the VN770P13TR datasheet, VN770P13TR pinout, VN770P13TR application, or VN770P13TR equivalent, key selection criteria include verified dual high-side/low-side channel independence, diagnostic flag timing (t_pol = 50–2500 µs), demagnetization voltage (V_demag = −18 V), under-voltage lockout (V_USD = 3.5–6 V), and SO-28 thermal resistance (R_thj-case = 20 °C/W).

Technical Context

The device implements independent protection per channel: high-side switches use junction-temperature sensing with 140 °C trip and 125 °C reset, while low-side switches integrate overvoltage clamping at 42 V and linear current limiting (I_lim = 10–20 A). Fault detection is routed via open-drain DIAGNOSTIC (pins 8) and input-pin voltage monitoring (e.g., I_gf = 50 mA sink during thermal fault).

Its H-bridge capability relies on precise timing coordination: turn-on delay t_d(on) = 60–500 ns (low-side), status delay t_pol = 50–2500 µs (open-load discrimination), and fast demagnetization (−18 V) reducing inductive energy dissipation by >60% versus passive freewheeling per P_dem = 0.5·L·I²·[(V_CC+V_demag)/V_demag]·f.

Key Specifications

Pinout & Package

Package: SO-28 (17.7 × 10.0 mm, 1.27 mm pitch), surface-mount, thermally enhanced with exposed pad (not electrically connected per datasheet).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-channel H-bridge smart power applications.

Compared with STSPIN840 and TPS2H160-Q1, VN770P13TR uniquely integrates matched high/low-side channels with −18 V active demagnetization, t_pol/t_povl fault discrimination, and SO-28 thermal performance - making it the only solution for compact, self-diagnosing DC motor H-bridges requiring no external power FETs or controllers.

Availability

VN770P13TR is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, medical infusion devices, and robotics requiring stable component supply across extended temperature ranges (−40 °C to 150 °C).

Supply support for VN770P13TR 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 AEC-Q100 qualification expertise.

VN770P13TR belongs to ST's VIPower M0-7 family of smart power ICs, engineered specifically for automotive-grade H-bridge and multi-switch applications demanding integrated protection, diagnostics, and thermal resilience without external discrete components.

FAQ

What is the maximum continuous output current per channel?

VN770P13TR supports 9 A continuous for high-side channels and 14 A for low-side channels at T_c = 25 °C, derating to 7.5 A at T_c = 85 °C per ISO-defined nominal current. The 0.13 Ω (HS) and 0.07 Ω (LS) R_DS(on) values ensure <1.5 V drop at rated current, enabling operation without forced air cooling in SO-28 packages.

How does the open-drain DIAGNOSTIC pin indicate fault types?

The DIAGNOSTIC pin (pin 8) pulls low for overtemperature, open-load (on/off), or undervoltage conditions. Fault type is distinguished by timing: open-load in on-state triggers t_pol = 50–2500 µs delay before pull-down, while overtemperature causes t_povl = 5–10 µs response - allowing firmware to classify faults without additional sensors.

Can VN770P13TR drive inductive loads without external freewheeling diodes?

Yes. Its integrated −18 V demagnetization voltage and 42 V overvoltage clamp (low-side) eliminate need for external diodes. During turn-off, energy from motor inductance is recovered through internal clamping, reducing EMI and power loss by >60% versus passive diode solutions per documented P_dem formula.

Is GND pin disconnection a functional safety feature?

Yes. Disconnecting pin 6 (GND) disables both high-side channels when V_CC ≤ 16 V - a hardware-level fail-safe that prevents unintended motor activation during ground fault or wiring error. This behavior is specified in the datasheet and tested per automotive short-circuit immunity requirements.