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TPS7H410x-SP and TPS7H410x-SEP Radiation-Hardened, 3V to 7V Input, 3A per Channel, Multichannel, Synchronous Buck Converter
SLVSH61
March 2025
TPS7H4104-SEP
ADVANCE INFORMATION
CONTENTS
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TPS7H410x-SP and TPS7H410x-SEP Radiation-Hardened, 3V to 7V Input, 3A per Channel, Multichannel, Synchronous Buck Converter
1
1
Features
2
Applications
3
Description
4
Device Options
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Quality Conformance Inspection
6.7
Typical Characteristics
7
Parameter Measurement Information
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
VIN and Power VIN Pins (VIN and PVIN)
8.3.2
Voltage Reference
8.3.3
Setting VOUTx
8.3.3.1
VOUTx with Error
8.3.3.2
Minimum Output Voltage
8.3.3.3
Maximum Output Voltage
8.3.4
Enable and EN_SEQ
8.3.4.1
ENx and External UVLO
8.3.4.2
Sequence UP/DOWN (EN_SEQ)
8.3.5
Power Good (PWRGDx)
8.3.6
Adjustable Switching Frequency, Synchronization (SYNC) and Relative Phase Shift
8.3.6.1
Internal Clock Mode
8.3.6.2
External Clock Mode and Switch-Over
8.3.6.3
Relative Phase Shift
8.3.7
Turn-On Behavior
8.3.7.1
Pulse Skipping During Start-up
8.3.7.2
Soft-Start (SS_TRx)
8.3.7.3
Safe Start-Up Into Prebiased Outputs
8.3.7.4
Tracking and Sequencing (SS_TRx)
8.3.8
Protection Modes
8.3.8.1
Overcurrent Protection
8.3.8.1.1
High-Side Cycle by Cycle Overcurrent Protection (IOC_HSx)
8.3.8.1.2
Low-Side Sourcing Overcurrent Protection (IOC_LS_SOURCINGx)
8.3.8.1.3
COMPx Clamp Shutdown (COMPxCLAMP)
8.3.8.1.4
Low-Side Overcurrent Sourcing and Sinking Protection
8.3.8.2
Output Overvoltage Protection (OVP)
8.3.8.3
Thermal Shutdown
8.3.9
Error Amplifier and Loop Response
8.3.9.1
Error Amplifier
8.3.9.2
Power Stage Transconductance
8.3.9.3
Slope Compensation
8.3.9.4
Frequency Compensation
8.4
Device Functional Modes
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Operating Frequency
9.2.2.2
Output Inductor Selection
9.2.2.3
Output Capacitor Selection
9.2.2.4
Input Capacitor Selection
9.2.2.5
Soft-Start Capacitor Selection
9.2.2.6
Undervoltage Lockout (UVLO) Set Point
9.2.2.7
Output Voltage Feedback Resistor Selection
9.2.2.8
Slope Compesation Requirements
9.2.2.9
Compensation Component Selection
9.2.3
Application Curve
9.3
Power Supply Recommendations
9.3.1
Layout
9.3.1.1
Layout Guidelines
9.3.1.2
Layout Example
10
Device and Documentation Support
10.1
Documentation Support
10.1.1
Related Documentation
10.2
Receiving Notification of Documentation Updates
10.3
Support Resources
10.4
Trademarks
10.5
Electrostatic Discharge Caution
10.6
Glossary
11
Revision History
12
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
PAP|64
MPQF071C
Thermal pad, mechanical data (Package|Pins)
Orderable Information
slvsh61_oa
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Data Sheet
TPS7H410x-SP and TPS7H410x-SEP Radiation-Hardened, 3V to 7V Input, 3A per Channel, Multichannel, Synchronous Buck Converter
1
Features
Total ionizing dose (TID) characterized
Radiation hardness assurance (RHA) availability up to 100krad(Si)
Single-event effects (SEE) characterized
Single-event latchup (SEL), single-event burnout (SEB), and single-event gate rupture (SEGR) immune up to linear energy transfer (LET) = 75 MeV-cm
2
/mg
Single-event functional interrupt (SEFI) and single-event transient (SET) characterized up to LET = 75MeV-cm
2
/mg
Input voltage range from 3V to 7V
Up to 3A of maximum output current per channel or more when channels are paralleled
Typical efficiency of
91.1%
(typ.) at VIN = 5V, V
OUT
= 1.8V, I
OUT
= 1A at f
SW
= 500kHz
Integrated
62mΩ
(HS) and
55mΩ
(LS) MOSFETs (typ. at V
IN
= 5V)
Flexible switching frequency:
100kHz to 1MHz, internal oscillator
External synchronization capability
Accurate voltage reference of
599.48mV
± 1%
over line, temperature, and TID
Monotonic start-up into pre-biased outputs
Per channel (CHx)
Adjustable slope compensation (RSCx)
Adjustable soft-start (SS_TRx)
Power-good output monitor for undervoltage and overvoltage (PWRGDx)
Input enable (ENx)
Sequence up and reverse sequence down when using EN_SEQ (only valid for TPS7H4104)
Plastic packages outgas tested per ASTM E595
Available in military (–55°C to 125°C) temp range
2
Applications
Space satellite point of load supply
Satellite electrical power systems (EPS)
Radiation hardened power supplies
