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ZSPM1501ZA1W0 Datasheet(PDF) 36 Page - Integrated Device Technology

Part # ZSPM1501ZA1W0
Description  True-Digital PWM Controller
Download  101 Pages
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Manufacturer  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

ZSPM1501ZA1W0 Datasheet(HTML) 36 Page - Integrated Device Technology

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ZSPM15xx Datasheet
© 2016 Integrated Device Technology, Inc.
36
January 27, 2016
4.2.
Device-Specific Passive Components
Each product in the ZSPM15xx family requires external device-specific passive components. These are listed in
the following tables.
If specified in the following tables, the feedback divider (R4, R5) is mandatory to achieve the specified output
voltage. The control loop has been optimized for the inductance specified, but inductors from different venders
can be used.
Note: The ZSPM15xx has been optimized for the specific Würth inductors recommended in the following tables
depending on the ZSPM15xx product number. If a different inductor is used, its specifications should be
comparable to the recommended Würth inductor; otherwise the full optimization provided by the ZSPM15xx might
not be achieved. If a different inductor is used, the current sense components (R6, R7, C8) must be recalculated
according to section 4.4.
Components specified as DNP must not be placed.
Table 4.2
Passive Components for the ZSPM1501, ZSPM1502, and ZSPM1503
Reference Designator
Component Value
Description
Feedback divider
R4
DNP
Output voltage feedback divider bottom resistor.
Important: Do not place R4 for the ZSPM1501, ZSPM1502, and ZSPM1503.
R5
1.0k
Ω
Output voltage feedback divider top resistor.
Connect between the output terminal and the VFBP pin.
Inductor and current sensing
L1
L=330nH
Recommended inductor: Würth WE-HCM 744301033.
R6, R7
1050
Ω
DCR current-sense filter resistors.
C8, C9
1000nF
DCR current-sense filter capacitor.
Table 4.3
Passive Components for the ZSPM1504, ZSPM1505, and ZSPM1506
Reference Designator
Component Value
Description
Feedback divider
R4
1k
Ω
Output voltage feedback divider bottom resistor.
R5
750
Ω
Output voltage feedback divider top resistor.
Connect between the output terminal and the VFBP pin.
Inductor and current sensing
L1
L=470nH
Recommended inductor: Würth WE-HCM 744301047.
R6, R7
1000
Ω
DCR current-sense filter resistors.
C8, C9
1000nF
DCR current-sense filter capacitor.


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