TPS2834_15 Datasheet, PDF (7/25 Pages) Texas Instruments – SYNCHRONOUS-BUCK MOSFET DRIVERS WITH DEAD-TIME CONTROL

TPS2834, TPS2835
SYNCHRONOUSĆBUCK MOSFET DRIVERS
WITH DEADĆTIME CONTROL
SLVS223B − NOVEMBER 1999 − REVISED AUGUST 2002
electrical characteristics over recommended operating virtual junction temperature range,
V_CC = 6.5 V, ENABLE = High, C_L = 3.3 nF (unless otherwise noted) (continued)
dead-time control
PARAMETER
VIH High-level input voltage
VIL Low-level input voltage
LOWDR
VIH High-level input voltage
DT
VIL Low-level input voltage
NOTE 2: Ensured by design, not production tested.
TEST CONDITIONS
Over the VCC range (see Note 2)
Over the VCC range
digital control terminals (IN, CROWBAR, SYNC, ENABLE)
PARAMETER
VIH High-level input voltage
VIL Low-level input voltage
TEST CONDITIONS
Over the VCC range
MIN
0.7VCC
2
TYP MAX UNIT
V
1
V
1V
MIN TYP MAX UNIT
2
V
1V
switching characteristics over recommended operating virtual junction temperature range,
ENABLE = High, C_L = 3.3 nF (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
Rise time
Fall time
Propagation delay time
HIGHDR output (see Note 2)
LOWDR output (see Note 2)
HIGHDR output (see Note 2)
LOWDR output (see Note 2)
HIGHDR going low (excluding
dead time) (see Note 2)
LOWDR going high (excluding
dead time) (see Note 2)
V(BOOT) = 4.5 V,
V(BOOT) = 6.5 V,
V(BOOT) = 12 V,
VCC = 4.5 V
VCC = 6.5 V
VCC = 12 V
V(BOOT) = 4.5 V,
V(BOOT) = 6.5 V,
V(BOOT) = 12 V,
VCC = 4.5 V
VCC = 6.5 V
VCC = 12 V
V(BOOT) = 4.5 V,
V(BOOT) = 6.5 V,
V(BOOT) = 12 V,
V(BOOT) = 4.5 V,
V(BOOT) = 6.5 V,
V(BOOTLO) = 0 V
V(BOOTLO) = 0 V
V(BOOTLO) = 0 V
V(BOOTLO) = 0 V
V(BOOTLO) = 0 V
V(BOOTLO) = 0 V
V(BOOTLO) = 0 V
V(BOOTLO) = 0 V
V(BOOTLO) = 0 V
V(BOOTLO) = 0 V
V(BOOTLO) = 0 V
60
50 ns
50
40
30 ns
30
50
40 ns
40
40
30 ns
30
95
80 ns
70
80
70 ns
V(BOOT) = 12 V, V(BOOTLO) = 0 V
Propagation delay time
LOWDR going low (excluding
dead time) (see Note 2)
VCC = 4.5 V
VCC = 6.5 V
VCC = 12 V
VCC = 4.5 V
40
Driver nonoverlap time
DT to LOWDR and LOWDR to
HIGHDR (see Note 2)
VCC = 6.5 V
25
VCC = 12 V
15
NOTE 2: Ensured by design, not production tested.
60
80
70 ns
60
170
135 ns
85
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