MC33774ATP1AE 18-Cell Battery-Cell Controller IC Information Summary

General Description

The MC33774ATP1AE is a premium version of the MC33774A series, specifically designed for automotive applications such as electric vehicles (EV) and hybrid electric vehicles (HEV), as well as industrial applications like energy storage systems (ESS) and uninterruptible power supply (UPS) systems. This device offers enhanced battery voltage measurement and improved accuracy, supporting ISO 26262 ASIL D compliant high-precision cell voltage and temperature measurements.

Features and Benefits

• AEC-Q100 Grade 1 Qualified: Operates in an ambient temperature range of -40°C to 125°C.
• ISO 26262 ASIL D Support: Ensures high reliability for cell voltage and temperature measurements.
• Cell Voltage Measurement:Supports 4 to 18 cells per device.16-bit resolution with up to ±0.8 mV typical measurement accuracy.Integrated configurable digital filter.
• External Temperature and Auxiliary Voltage Measurements:One analog input for absolute measurement, 5 V input range.Eight analog inputs configurable as absolute or ratiometric, 5 V input range.16-bit resolution with ±5 mV typical measurement accuracy.
• Internal Measurement:Two redundant internal temperature sensors.Supply voltages and external transistor current.
• Cell Voltage Balancing:18 internal balancing field effect transistors (FET), up to 360 mA peak with 0.5 Ω RDSon per channel (typ.).Support for simultaneous passive balancing of all channels with automatic odd/even sequence.Global balancing timeout timer.Voltage and temperature controlled balancing.
• I2C-Bus Master Interface: Controls external devices such as EEPROMs and security ICs.
• Configurable Alarm Output and Cyclic Wake-Up: Monitors the pack and balancing function during sleep.
• Host Interface: Supports SPI or isolated daisy chain communication (TPL3).2 Mbit/s data rate for TPL interface.4 Mbit/s data rate for SPI interface.
• TPL3 Daisy Chain Communication: Supports up to six daisy chains and 62 nodes per chain with capacitive or inductive isolation.
• Unique Device ID with Dynamic Addressing.
• Operation Modes:Active mode FP (12 mA typ.).Sleep mode LP (60 µA typ.).Deep Sleep mode ULP (15 µA typ.).

Ordering Information

• Package Type: LQFP64
• Description: Plastic, thermal enhanced low profile quad flat package; 64 terminals; 0.50 mm pitch; 10 x 10 x 1.4 mm body.
• Part Number: MC33774ATP1AE

Applications

• Automotive:(Plug-in) hybrid electric vehicle battery management system.Electric vehicle battery management system.
• Industrial:Stationary energy storage systems (ESS).Uninterruptible power supply (UPS) systems.

Block Diagram

The MC33774ATP1AE features a comprehensive internal architecture, including primary and secondary signal processing, gate drive control, diagnostics, monitoring, and communication interfaces for SPI and TPL3.

Pinning Information

The device has a 64-pin LQFP64 package with various pins for cell terminals, balancing, analog inputs, digital I/O, and communication interfaces. For detailed pin descriptions, refer to the product brief.

Limiting Values

• VBAT Voltage: -0.3 V to 94 V.
• Cell Terminal Input Differential Voltage: -5 V to 10 V.
• Balancing Input Differential Voltage: -4.5 V to 12.5 V.
• VDDC and VDDIO Voltage: -0.3 V to 5.5 V.
• VAUX Voltage: -0.3 V to 4 V.
• GPIOx Voltage: -0.3 V to VDDC + 0.5 V.
• Junction Temperature: -40°C to 165°C.
• Storage Temperature: -55°C to 150°C.

Electrical Characteristics

• VBAT Operating Range: 9 V to 90 V.
• Cell Voltage Measurement Accuracy: ±0.8 mV typical at the beginning of life.
• TPL Current:Wait State: 1.4 mA.Forward State: 9.2 mA.Respond State: 17 mA.
• Balancing Current: Up to 360 mA peak.

Package Information

• Package Drawing Number: 98ASA10763D.

Revision History

• v.3 (25 January 2024): Updated Figure 1.
• v.2 (11 December 2023): Added MC33774AxP product description and characteristics.
• v.1 (03 March 2023): Initial version.