DRV592_12 Datasheet, PDF (4/16 Pages) Texas Instruments – +- 3-A HIGH EFFICIENCY H-BRIDGE

DRV592
SLOS390A – NOVEMBER 2001– REVISED MAY 2002
www.ti.com
Terminal Functions
TERMINAL
NAME
NO.
I/O DESCRIPTION
AGND
2
Analog ground
AVDD
1
I Analog power supply
FAULT0
5
O Fault flag 0, low when active open drain output (see application information)
FAULT1
4
O Fault flag 1, low when active open drain output (see application information)
HI-Z
3
I Places both outputs of the H-bridge into a high-impedance state (2 kΩ to ground) when a TTL logic low is
applied to this terminal; normal operation when a TTL logic high is applied.
IN–
7
I Negative H-bridge input
IN+
6
I Positive H-bridge input
OUT–
13–17 O Negative H-bridge output (5 terminals)
OUT+
24–28 O Positive H-bridge output (5 terminals)
PGND
18–23
High-current ground (6 terminals)
PVDD
9–12, I High-current power supply (8 terminals)
29–32
SHUTDOWN
8
I Places the amplifier in shutdown mode when a TTL logic low is applied to this terminal; places the amplifier in
normal operation when a TTL logic high is applied
FUNCTIONAL BLOCK DIAGRAM
AVDD AGND
IN+
IN–
SHUTDOWN
HI-Z
IN+
TTL
Input IN–
Buffer
SDZ
AVDD
Biases
and
References
Thermal
VDDok
Gate
Drive
Gate
Drive
Start-Up
Protection
Logic
PVDD
OUT+
PGND
PVDD
OUT–
PGND
OC
Detect
FAULT0
FAULT1
4