TPS56100
HIGH-EFFICIENCY DSP POWER SUPPLY CONTROLLER
FOR 5-V INPUT SYSTEMS
SLVS201A 鈥?JUNE 1999 鈥?REVISED JULY 1999
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Single-Channel, 5-V Controller
Synchronous-Rectifier Drivers for Greater
Than 90% Efficiency
Useable for All Common DSP Supply
Voltages 鈥?Popular Output Voltage Options
Set With Program Pins
EVM Available
Ideal for Applications With Current Ranges
From 3 A to 30 A.
Hysteretic Control Technique Enables Fast
Transient Response 鈥?Ideal for 鈥機(jī)6000 or
Multiple 鈥機(jī)5000 Applications
Low Supply Current
鈥?3 mA in Operation
鈥?90
碌A(chǔ)
in Standby
Power Good Output
28-Pin TSSOP PowerPAD鈩?Package
PWP PACKAGE
(TOP VIEW)
IOUT
NC
OCP
VHYST
VREFB
VSENSE
ANAGND
SLOWST
BIAS
LODRV
LOHIB
DRVGND
LOWDR
DRV
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
PWRGD
VP0
VP1
VP2
VP3
VP4
INHIBIT
IOUTLO
LOSENSE
HISENSE
BOOTLO
HIGHDR
BOOT
V
CC
NC 鈥?Not Connected
description
The TPS56100 is a high-efficiency synchronous-buck regulator controller which provides an accurate
programmable supply voltage to low-voltage digital signal processors, such as the 鈥楥6x and 鈥楥54x DSPs. An
internal 5-bit DAC is used to program the reference voltage from 1.3 V to 2.6 V. Higher output voltages can be
implemented using an external input resistive divider. The TPS56100 uses a fast hysteretic control method that
provides a quick transient response. The propagation delay from the comparator input to the output driver is
application example
5V
GND
28 27 26 25 24 23 22 21 20 19 18 17 16 15
PWRGD
IOUTLO
LOSENSE
BOOTLO
HIGHDR
VP4
INHIBIT
BOOT
VP0
VP1
VP2
VP3
HISENSE
VCC
TPS56100
VSENSE
ANAGND
VREFB
VHYST
1.5 V
DRVGND
LOWDR
LOHIB
SLOWST
BIAS
CVDD
LODRV
IOUT
OCP
DRV
NC
+
DSP
1
2
3
4
5
6
7
8
9 10 11 12 13 14
GND
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments Incorporated.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
漏
1999, Texas Instruments Incorporated
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
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