Read UCD30xxDPWM text version

Application Report

ZHCA419 ­ March 2011

UCD30xx DPWM

Sundy Xu China Telecom Application Team

UCD30xx UCD3040UCD3020 UCD3028AC/DC DC/DC UCD30xx DPWM DPWM DPWM DPWM

1 2 3 4 5 6

................................................................................................................................................ 2 UCD30xx ................................................................................................................. 2 UCD30xx .............................................................................................................. 5 ......................................................................................................................................... 5 ................................................................................................................................................ 6 ......................................................................................................................................... 7

1DPWM ................................................................................................................ 2 2UCD30xx ............................................................................................................ 3 3 ............................................................................................................................ 4 4 ................................................................................................................. 4 5 DPWM .................................................................................................... 5 6.............................................................................................................. 6

1

ZHCA419

1

DPWM 1UCD30xx 2UCD30xx UCD30xx DPWM 100ns LDO UCD30xx UCD30xx 1 UCD30xx DPWM DPWM 166ns DPWM UCD30xx UCD30xx UCD30xx DPWM

1DPWM

2

UCD30xx

UCD30xx 2 2 2P2Z 3 3 3P3Z3 3 2 2 b01 b11 b21 a11 a21 1 1 b12 a12 2 2 2 UCD30xx 2 z1

G( z) =

b01 z 2 + b11 z + b21 z 2 + a11 z + a 21

1

2

UCD30xx DPWM

ZHCA419

b01 b11 b21 a11 a21

2UCD30xx

1 1

G ( s ) = K DC

s s 2F + 1 2F + 1 Z1 Z2 (s + 0) s + 1 2F P2

2

2 2 2 K DC 2 z 1

b01 b11 b21 a11 a21 5

2 K DC FZ 1 FZ 2 FP1 FP 2 3

UCD30xx DPWM 3

ZHCA419

3

R3 EAP R2 C1 R1

C2 VOUT

UCD3028

EAN

4

4

UCD30xx DPWM

ZHCA419

3

UCD30xx

4 R3 C 2 R1 R2 C1 C1 DPWM R3 C 2 3 R3 C 2 UCD30xx 3 R3 C 2 FZ 5 FZ 1 FP 5 UCD30xx

FZ 3 UCD30xx FZ 3

FZ 2 UCD30xx FP 3 0 FP 2

5 DPWM

4

FZ 1 = 1.5kHz FZ 2 = 10kHz FP1 = 0kHz FP 2 = 12kHz K DC = 85dB b01 b11 b21 a11 a21 2.261724.31252.05469-1.90625 0.90625 DPWM 1 6 DPWM 4

UCD30xx DPWM 5

ZHCA419 R1 R2 C1 33K1.5K 1nF R3 C 2 10K 2nF R3 C 2 FZ 5 =1.8kHz FP 5 =8kHz UCD30xx FZ 3 = 8kHz FZ 4 = 10kHz FP 3 = 0kHz FP 4 = 12kHz K DC = 85dB b01 b11 b21 a11

a21 0.43555-0.807620.37402-1.9043 0.9043

DPWM 5 83ns UCD30xx 6 6 DPWM

6

5

UCD3028 1 1 1 1 b01 b11 b21 a11 a21 b12 a12 DPWM b01 b11 b21 a11 a21 DPWM DPWM 100ns DPWM 100ns DPWM UCD30xx DPWM DPWM

6

UCD30xx DPWM

ZHCA419

6

1 UCD30xx datasheet (SLUS868B), Texas Instruments Inc., 2010 2 UCD9240 Compensation Cookbook (SLUA497), Texas Instruments Inc., 2009 3 UCD30xx Fusion Digital Power Peripherals Programmer's Manual, Texas Instruments Inc., 2010

UCD30xx DPWM 7

(TI) , , TI TI TI TI , TI , TI TI TI TI TI TI TI TI TI TI TI TI TI TI TI TI TI TI TI TI TI /TI """" TI TI TI TI ISO/TS 16949 TI URL TI DLP® DSP - (MCU) RFID OMAP www.ti.com.cn/audio www.ti.com.cn/amplifiers www.ti.com.cn/dataconverters www.dlp.com www.ti.com.cn/dsp www.ti.com.cn/clockandtimers www.ti.com.cn/interface www.ti.com.cn/logic www.ti.com.cn/power www.ti.com.cn/microcontrollers www.ti.com.cn/rfidsys www.ti.com/omap www.ti.com.cn/wirelessconnectivity www.deyisupport.com IMPORTANT NOTICE www.ti.com.cn/telecom www.ti.com.cn/computer www.ti.com/consumer-apps www.ti.com/energy www.ti.com.cn/industrial www.ti.com.cn/medical www.ti.com.cn/security www.ti.com.cn/automotive www.ti.com.cn/video

1568 32 200122 Copyright © 2012

Information

UCD30xxDPWM

8 pages

Report File (DMCA)

Our content is added by our users. We aim to remove reported files within 1 working day. Please use this link to notify us:

Report this file as copyright or inappropriate

751626


Notice: fwrite(): send of 197 bytes failed with errno=104 Connection reset by peer in /home/readbag.com/web/sphinxapi.php on line 531