DRV8802-Q1 Automotive DC Motor-Driver IC
1 Features
- Qualified for Automotive Applications
- AEC-Q100 Qualified With the Following Results
- Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C4B
- Dual H-Bridge Current-Control Motor Driver
- Drives Two DC Motors
- Brake Mode
- Two-Bit Winding Current Control Allows Up to 4 Current Levels
- Low MOSFET On-Resistance
- 1.6-A Maximum Drive Current at 24 V, 25°C
- Built-In 3.3-V Reference Output
- Industry Standard Parallel Digital Control
Interface - 8-V to 45-V Operating Supply Voltage Range
- Thermally Enhanced Surface Mount Package
2 Applications
- Automotive HVAC
- Automotive Valves
- Automotive Infotainment
3 Description
The DRV8802-Q1 device provides an integrated motor driver solution for automotive applications. The device has two H-bridge drivers, and is intended to drive DC motors. The output driver block for each consists of N-channel power MOSFET’s configured as H-bridges to drive the motor windings. The DRV8802-Q1 device can supply up to 1.6-A peak or 1.1-A RMS output current (with proper heatsinking at 24 V and 25°C) per H-bridge.
A simple parallel digital control interface is compatible with industry-standard devices. Decay mode is programmable to allow braking or coasting of the motor when disabled.
Internal shutdown functions are provided for over current protection, short circuit protection, under voltage lockout and overtemperature.
The DRV8802-Q1 device is available in a 28-pin HTSSOP package with PowerPAD™ (Eco-friendly: RoHS & no Sb/Br).
Device Information(1)
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| DRV8802-Q1 | HTSSOP (28) | 9.70 mm × 4.40 mm |
- For all available packages, see the orderable addendum at the end of the datasheet.
Simplified Application Diagram
4 Revision History
| DATE | REVISION | NOTES |
|---|---|---|
| June 2014 | A | Initial release. |
5 Pin Configuration and Functions
Pin Functions
| PIN | TYPE(1) | DESCRIPTION | EXTERNAL COMPONENTS OR CONNECTIONS |
|
|---|---|---|---|---|
| NAME | NO. | |||
| POWER AND GROUND | ||||
| CP1 | 1 | IO | Charge pump flying capacitor | Connect a 0.01-μF 50-V capacitor between CP1 and CP2. |
| CP2 | 2 | IO | Charge pump flying capacitor | |
| GND | 14 | — | Device ground | |
| 28 | ||||
| V3P3OUT | 15 | O | 3.3-V regulator output | Bypass to GND with a 0.47-μF 6.3-V ceramic capacitor. Can be used to supply VREF. |
| VMA | 4 | — | Bridge A power supply | Connect to motor supply (8 to 45 V). Both pins must be connected to same supply. |
| VMB | 11 | — | Bridge B power supply | |
| VCP | 3 | IO | High-side gate drive voltage | Connect a 0.1-μF 16-V ceramic capacitor and a 1-MΩ resistor to VMx. |
| CONTROL | ||||
| AI0 | 24 | I | Bridge A current set | Sets bridge A current: 00 = 100%, 01 = 71%, 10 = 38%, 11 = 0 |
| AI1 | 25 | I | ||
| AENBL | 21 | I | Bridge A enable | Logic high to enable bridge A |
| APHASE | 20 | I | Bridge A phase (direction) | Logic high sets AOUT1 high, AOUT2 low |
| AVREF | 12 | I | Bridge A current set reference input | Reference voltage for winding current set. Can be driven individually with an external DAC for microstepping, or tied to a reference (for example, V3P3OUT). |
| BVREF | 13 | I | Bridge B current set reference input | |
| BI0 | 26 | I | Bridge B current set | Sets bridge B current: 00 = 100%, 01 = 71%, 10 = 38%, 11 = 0 |
| BI1 | 27 | I | ||
| BENBL | 22 | I | Bridge B enable | Logic high to enable bridge B |
| BPHASE | 23 | I | Bridge B phase (direction) | Logic high sets BOUT1 high, BOUT2 low |
| DECAY | 19 | I | Decay (brake) mode | Low = brake (slow decay), high = coast (fast decay) |
| nRESET | 16 | I | Reset input | Active-low reset input initializes internal logic and disables the H-bridge outputs |
| nSLEEP | 17 | I | Sleep mode input | Logic high to enable device, logic low to enter low-power sleep mode |
| STATUS | ||||
| nFAULT | 18 | OD | Fault | Logic low when in fault condition (overtemperature, overcurrent) |
| OUTPUT | ||||
| AOUT1 | 5 | O | Bridge A output 1 | Connect to motor winding A |
| AOUT2 | 7 | O | Bridge A output 2 | |
| BOUT1 | 10 | O | Bridge B output 1 | Connect to motor winding B |
| BOUT2 | 8 | O | Bridge B output 2 | |
| ISENA | 6 | IO | Bridge A ground and current sense | Connect to current sense resistor for bridge A |
| ISENB | 9 | IO | Bridge B ground and current sense | Connect to current sense resistor for bridge B |
