Datasheet
VFP PACKAGE
(TOP VIEW)
31 30 29 28 27
9 10
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
PWM
PGND
PGND
PGND
PGND
PGND
PGND
H/C
AVDD
AGND
ROSC
COSC
AREF
IN+
IN−
SHUTDOWN
32 26
11 12 13
14 15
FAULT1
FAULT0
PVDD
PVDD
H/C
FREQ
INT/EXT
PVDD
PVDD
PWM
16
PWM
25
H/C
PVDD
H/C
PowerPAD
PVDD
PWM
DRV593
DRV594
SLOS401C –OCTOBER 2002–REVISED JULY 2010
www.ti.com
PIN ASSIGNMENTS
TERMINAL FUNCTIONS
TERMINAL
I/O DESCRIPTION
NAME NO.
AGND 2 Analog ground
AREF 5 O Connect 1 mF capacitor to ground for AREF voltage filtering
AVDD 1 I Analog power supply
COSC 4 I Connect capacitor to ground to set oscillation frequency (220 pF for 500 kHz, 1 nF for 100 kHz) when
the internal oscillator is selected; connect clock signal when an external oscillator is used
FAULT0 10 O Fault flag 0, low when active open drain output (see application information)
FAULT1 9 O Fault flag 1, high when active open drain output (see application information)
FREQ 32 I Selects 500 kHz switching frequency when a TTL logic low is applied to this terminal; selects 100 kHz
switching frequency when a TTL logic high is applied
IN– 7 I Negative differential input
IN+ 6 I Positive differential input
INT/EXT 31 I Selects the internal oscillator when a TTL logic high is applied to this terminal; selects the use of an
external oscillator when a TTL logic low is applied to this terminal
H/C 14, 15, O Direction control output for heat and cool modes (4 pins)
16, 17
PWM 24, 25, O PWM output for voltage magnitude (4 pins)
26, 27
PGND 18, 19, High-current ground (6 pins)
20, 21,
22, 23
PVDD 11, 12, I High-current power supply (6 pins)
13, 28,
29, 30
ROSC 3 I Connect 120-kΩ resistor to AGND to set oscillation frequency (either 500 kHz or 100 kHz). Not needed
if an external clock is used.
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
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Product Folder Link(s): DRV593 DRV594