TPS7H5005-SEP, TPS7H5006-SEP, TPS7H5007-SEP, TPS7H5008-SEP
SLVSGG1 – FEBRUARY 2022
www.ti.com
9 Application and Implementation
Note
Information in the following applications sections is not part of the TI component specification,
and TI does not warrant its accuracy or completeness. TI’s customers are responsible for
determining suitability of components for their purposes, as well as validating and testing their design
implementation to confirm system functionality.
9.1 Application Information
The TPS7H500x-SEP series is a family of radiation-hardened current mode PWM controllers that can be utilized
for designing space-grade DC-DC converters. Each device should be paired with external gate drivers in order to
provide control of the power semiconductor device(s) of the converter power stage. By allowing for switching
frequencies up to 2 MHz, the controllers provide many advantages for GaN power semiconductor based
designs. The TPS7H500x-SEP family can be used for the design of a number of common DC-DC converter
topologies, including but not limited to: buck, flyback, forward, active-clamp forward, push-pull, and full-bridge.
9.2 Typical Application
102
CS_ILIM
10 pF
10 k
7.5
RCD
Clamp
1:100
HOUSEKEEPING
VIN
100 µF
4×
Output Filter
10 k
2.5:1
40 µH
2 k
SYNC
OUTB
OUTA
EN
0.47 µH
22 V to 36 V
GaN Driver
LP1
LP2
LS1
LS2
VLDO
HICC
TPS7H5005-SEP
DCL
RT
IN1
OUT1
5 V
1 µF
IN2
OUT2
10 k
330 µF
7×
10 k
47 pF
15 nF
3.3 nF
RSC
SS
FAULT
COMP
1.4 k
40.2 k
205 k
102 k
VSENSE REFCAP
SP
CS_ILIM
SRA
470 nF
33 nF
PS
20.5 k
20.5 k
49.9 k
CS_ILIM
LEB
SRB
AVSS
Isolator
OUT
IN
IN
GaN Driver
IN1
OUT1
IN2
OUT2
Isolator
OUT
Figure 9-1. Typical Application Schematic
9.2.1 Design Requirements
The example provided here is to demonstrate how to design a synchronous push-pull converter using GaN
power semiconductor devices. This design example is to show how to determine the component selection for the
TPS7H5005-SEP as well as key components of the converter power stage.
Copyright © 2022 Texas Instruments Incorporated
48
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