ZSPM1025A
True Digital PWM Controller (Single-Phase, Single-Rail)
A high-reliability, high-temperature one-time programmable memory (OTP) is used to store configuration param-
eters. All required bias and reference voltages are internally derived from the external supply voltage.
Figure 2.2
Block Diagram
Current Sensing
ISNSP
ISNSN
Current
Limiting
Average Current
Sensing
Digital Control Loop
VFBP
VFBN
VFB
DAC
PWM
LSE
FLASH
ADC
Adaptive Digital
Controller
PWM
OC Detection
OV Detection
OT Detection
Sequencer
Configurable
Error Handler
DAC
Vin OV/UV
Detection
Bias
Current
Source
Int. Temp
Sense
VREFP
VREF
Vout UV Detection
1.8V Reg
Analog
AVDD18
TEMP
ADDR0
ADDR1
VIN
NVM
(OTP)
HKADC
CPU Core
1.8V Reg
Digital
VDD18
VDD33
GPIO
SMBus
Clock
Generation
3.3V
Reg
© 2013 Zentrum Mikroelektronik Dresden AG — Rev. 1.00
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the
prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.
Data Sheet
October 24, 2013
13 of 46
ETC [ ETC ]
